Built 2026-10-15 (15 October 2026)

Kennebec Weather Records (USC00394516)

Record envelope, standing records and threshold days for Kennebec (USC00394516), South Dakota, United States, with 134 years of record.

Key Facts for Kennebec

  • Kennebec (USC00394516) is a weather station in South Dakota, United States at 43.90 latitude and -99.86 longitude, 512 m (1,681 ft) above sea level.
  • The station reports from 1893 to 2026, 134 years of record.
  • 1,464 records set at Kennebec still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Kennebec tied a daily record high minimum temperature of 15.0 C (59.0 F) on 10 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: South Dakota, United States, 43.90 latitude, -99.86 longitude.
  • Elevation: 512 m (1,681 ft).
  • Period of record: 1893 to 2026, 134 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

7 days at or beyond a record
Daily record high and record low at Kennebec, with 2026 drawn through them The band shows the record high and record low for each calendar day at Kennebec. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Kennebec. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Kennebec, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.1 C (70.0 F)-41.1 C (-42.0 F)15.6 C (60.1 F)-26.7 C (-16.1 F)
Feb24.4 C (75.9 F)-42.8 C (-45.0 F)21.1 C (70.0 F)-20.0 C (-4.0 F)
Mar32.8 C (91.0 F)-33.3 C (-27.9 F)29.4 C (84.9 F)-20.0 C (-4.0 F)
Apr37.2 C (99.0 F)-21.7 C (-7.1 F)36.1 C (97.0 F)-8.9 C (16.0 F)
May42.2 C (108.0 F)-11.7 C (10.9 F)36.7 C (98.1 F)-4.4 C (24.1 F)
Jun44.4 C (111.9 F)-2.2 C (28.0 F)34.4 C (93.9 F)6.1 C (43.0 F)
Jul48.3 C (118.9 F)1.7 C (35.1 F)42.2 C (108.0 F)15.0 C (59.0 F)
Aug45.6 C (114.1 F)0.0 C (32.0 F)36.7 C (98.1 F)7.2 C (45.0 F)
Sep43.3 C (109.9 F)-11.7 C (10.9 F)39.4 C (102.9 F)7.8 C (46.0 F)
Oct38.3 C (100.9 F)-28.3 C (-18.9 F)35.0 C (95.0 F)2.2 C (36.0 F)
Nov31.7 C (89.1 F)-30.6 C (-23.1 F)n/an/a
Dec23.3 C (73.9 F)-37.2 C (-35.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Kennebec by the year they were set 1,464 records at Kennebec still stand. 1936 holds the most, with 46. 02040601893: 131894: 201895: 131896: 181897: 261898: 81899: 221900: 101901: 101902: 151903: 131904: 71905: 141906: 91907: 41908: 51909: 141910: 191911: 151912: 81913: 111914: 141915: 111916: 171917: 181918: 191919: 221920: 21921: 71922: 151923: 91924: 151925: 121926: 121927: 101928: 131929: 81930: 101931: 231932: 121933: 241934: 231935: 151936: 461937: 181938: 111939: 201940: 131941: 51942: 111943: 121944: 51945: 51946: 101947: 101948: 101949: 51950: 111951: 131952: 21953: 31954: 121955: 81956: 101957: 21958: 121959: 191960: 51961: 51962: 181963: 61964: 61965: 181966: 181967: 101968: 51969: 81970: 31971: 101972: 71973: 71974: 131975: 71976: 151977: 51978: 91979: 71980: 91981: 81982: 41983: 141984: 81985: 201986: 51987: 101988: 161989: 171990: 141991: 161992: 121993: 51994: 71995: 101996: 101997: 121998: 101999: 62000: 172001: 92002: 82003: 92004: 62005: 72006: 132007: 142008: 12009: 92010: 42011: 52012: 222013: 62014: 72015: 82016: 52017: 72018: 62019: 82020: 82021: 72022: 42023: 82024: 52026: 81893190719211935194919631977199120052019
1,464 records at Kennebec still stand. 1936 holds the most, with 46.
Standing records at Kennebec by the year they were set
Year setStanding records
189313
189420
189513
189618
189726
18988
189922
190010
190110
190215
190313
19047
190514
19069
19074
19085
190914
191019
191115
19128
191311
191414
191511
191617
191718
191819
191922
19202
19217
192215
19239
192415
192512
192612
192710
192813
19298
193010
193123
193212
193324
193423
193515
193646
193718
193811
193920
194013
19415
194211
194312
19445
19455
194610
194710
194810
19495
195011
195113
19522
19533
195412
19558
195610
19572
195812
195919
19605
19615
196218
19636
19646
196518
196618
196710
19685
19698
19703
197110
19727
19737
197413
19757
197615
19775
19789
19797
19809
19818
19824
198314
19848
198520
19865
198710
198816
198917
199014
199116
199212
19935
19947
199510
199610
199712
199810
19996
200017
20019
20028
20039
20046
20057
200613
200714
20081
20099
20104
20115
201222
20136
20147
20158
20165
20177
20186
20198
20208
20217
20224
20238
20245
20268

All-Time Record Progression

3 new records
When Kennebec set new all-time records 3 all-time records were set at Kennebec between 28 July 1933 and 18 April 1995. Each dot is a new record. Record high maximum temperatureRecord daily snowfall28 July 1933: Record high maximum temperature 47.2 C (117.0 F)5 July 1936: Record high maximum temperature 48.3 C (118.9 F)18 April 1995: Record daily snowfall 58.4 cm (23.0 in)194019501960197019801990
3 all-time records were set at Kennebec between 28 July 1933 and 18 April 1995. Each dot is a new record.
When Kennebec set new all-time records
DateKindDetail
1933-07-28Record high maximum temperatureRecord high maximum temperature 47.2 C (117.0 F)
1936-07-05Record high maximum temperatureRecord high maximum temperature 48.3 C (118.9 F)
1995-04-18Record daily snowfallRecord daily snowfall 58.4 cm (23.0 in)

Wettest Day of Each Month

May: 113.0 mm (4.4 in)
Record daily precipitation for each month at Kennebec The wettest day on record for each calendar month at Kennebec. The most was 113.0 mm (4.4 in) on 17 May 1898. 050100150 Jan: 61.0 mm (2.4 in), 9 January 1939 Jan Feb: 26.4 mm (1.0 in), 23 February 1977 Feb Mar: 45.7 mm (1.8 in), 31 March 1897 Mar Apr: 59.2 mm (2.3 in), 26 April 1964 Apr May: 113.0 mm (4.4 in), 17 May 1898 May Jun: 81.8 mm (3.2 in), 3 June 1997 Jun Jul: 81.3 mm (3.2 in), 18 July 2018 Jul Aug: 94.7 mm (3.7 in), 30 August 1999 Aug Sep: 89.2 mm (3.5 in), 2 September 2021 Sep Oct: 82.0 mm (3.2 in), 19 October 1908 Oct Nov: 46.5 mm (1.8 in), 17 November 1952 Nov Dec: 33.3 mm (1.3 in), 13 December 2022 Dec
The wettest day on record for each calendar month at Kennebec. The most was 113.0 mm (4.4 in) on 17 May 1898.
Record daily precipitation for each month at Kennebec
MonthRecord daily precipitation (mm)Date
Jan61.0 mm (2.4 in)9 January 1939
Feb26.4 mm (1.0 in)23 February 1977
Mar45.7 mm (1.8 in)31 March 1897
Apr59.2 mm (2.3 in)26 April 1964
May113.0 mm (4.4 in)17 May 1898
Jun81.8 mm (3.2 in)3 June 1997
Jul81.3 mm (3.2 in)18 July 2018
Aug94.7 mm (3.7 in)30 August 1999
Sep89.2 mm (3.5 in)2 September 2021
Oct82.0 mm (3.2 in)19 October 1908
Nov46.5 mm (1.8 in)17 November 1952
Dec33.3 mm (1.3 in)13 December 2022

Period of Record Coverage

1893 to 2026
Days with data per year at Kennebec 134 years of record at Kennebec, 1893 to 2026. 16 years have data for under 90 percent of days and are left out of rankings: 1894, 1899, 1901, 1907, 1908, 1909, 1910, 1916 and others. 1893: 357 of 365 days1894: 318 of 365 days1895: 360 of 365 days1896: 360 of 366 days1897: 360 of 365 days1898: 361 of 365 days1899: 176 of 365 days1900: 362 of 365 days1901: 314 of 365 days1902: 348 of 365 days1903: 356 of 365 days1904: 352 of 366 days1905: 358 of 365 days1906: 357 of 365 days1907: 256 of 365 days1908: 259 of 366 days1909: 313 of 365 days1910: 320 of 365 days1911: 350 of 365 days1912: 349 of 366 days1913: 344 of 365 days1914: 354 of 365 days1915: 354 of 365 days1916: 322 of 366 days1917: 360 of 365 days1918: 337 of 365 days1919: 356 of 365 days1920: 90 of 366 days1921: 267 of 365 days1922: 355 of 365 days1923: 356 of 365 days1924: 322 of 366 days1925: 352 of 365 days1926: 349 of 365 days1927: 270 of 365 days1928: 315 of 366 days1929: 337 of 365 days1930: 347 of 365 days1931: 351 of 365 days1932: 351 of 366 days1933: 344 of 365 days1934: 357 of 365 days1935: 358 of 365 days1936: 365 of 366 days1937: 359 of 365 days1938: 363 of 365 days1939: 363 of 365 days1940: 361 of 366 days1941: 363 of 365 days1942: 362 of 365 days1943: 307 of 365 days1944: 354 of 366 days1945: 364 of 365 days1946: 365 of 365 days1947: 365 of 365 days1948: 364 of 366 days1949: 364 of 365 days1950: 364 of 365 days1951: 357 of 365 days1952: 365 of 366 days1953: 364 of 365 days1954: 362 of 365 days1955: 363 of 365 days1956: 362 of 366 days1957: 356 of 365 days1958: 351 of 365 days1959: 364 of 365 days1960: 365 of 366 days1961: 362 of 365 days1962: 364 of 365 days1963: 363 of 365 days1964: 273 of 366 days1965: 364 of 365 days1966: 364 of 365 days1967: 362 of 365 days1968: 358 of 366 days1969: 361 of 365 days1970: 361 of 365 days1971: 364 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 362 of 365 days1984: 365 of 366 days1985: 361 of 365 days1986: 361 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 364 of 365 days1990: 363 of 365 days1991: 363 of 365 days1992: 364 of 366 days1993: 362 of 365 days1994: 364 of 365 days1995: 362 of 365 days1996: 366 of 366 days1997: 364 of 365 days1998: 335 of 365 days1999: 362 of 365 days2000: 366 of 366 days2001: 364 of 365 days2002: 364 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 334 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 365 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 283 of 365 days1900192019401960198020002020
134 years of record at Kennebec, 1893 to 2026. 16 years have data for under 90 percent of days and are left out of rankings: 1894, 1899, 1901, 1907, 1908, 1909, 1910, 1916 and others.
Days with data per year at Kennebec
YearDays with dataShare of yearComplete
189335798%Yes
189431887%No
189536099%Yes
189636098%Yes
189736099%Yes
189836199%Yes
189917648%No
190036299%Yes
190131486%No
190234895%Yes
190335698%Yes
190435296%Yes
190535898%Yes
190635798%Yes
190725670%No
190825971%No
190931386%No
191032088%No
191135096%Yes
191234995%Yes
191334494%Yes
191435497%Yes
191535497%Yes
191632288%No
191736099%Yes
191833792%Yes
191935698%Yes
19209025%No
192126773%No
192235597%Yes
192335698%Yes
192432288%No
192535296%Yes
192634996%Yes
192727074%No
192831586%No
192933792%Yes
193034795%Yes
193135196%Yes
193235196%Yes
193334494%Yes
193435798%Yes
193535898%Yes
1936365100%Yes
193735998%Yes
193836399%Yes
193936399%Yes
194036199%Yes
194136399%Yes
194236299%Yes
194330784%No
194435497%Yes
1945364100%Yes
1946365100%Yes
1947365100%Yes
194836499%Yes
1949364100%Yes
1950364100%Yes
195135798%Yes
1952365100%Yes
1953364100%Yes
195436299%Yes
195536399%Yes
195636299%Yes
195735698%Yes
195835196%Yes
1959364100%Yes
1960365100%Yes
196136299%Yes
1962364100%Yes
196336399%Yes
196427375%No
1965364100%Yes
1966364100%Yes
196736299%Yes
196835898%Yes
196936199%Yes
197036199%Yes
1971364100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981364100%Yes
1982365100%Yes
198336299%Yes
1984365100%Yes
198536199%Yes
198636199%Yes
1987364100%Yes
1988366100%Yes
1989364100%Yes
199036399%Yes
199136399%Yes
199236499%Yes
199336299%Yes
1994364100%Yes
199536299%Yes
1996366100%Yes
1997364100%Yes
199833592%Yes
199936299%Yes
2000366100%Yes
2001364100%Yes
2002364100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
200933492%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016365100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020365100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628378%No

Latest Records

20
Latest records at Kennebec
DateStationRecordValueBeat old record byOld record stoodSignificance
10 October 2026Kennebec, USdaily high min (Tie, Provisional)15.0 C (59.0 F)tie88 years9 of 100 (Routine)
3 August 2026Kennebec, USdaily high min (Tie)21.7 C (71.1 F)tie24 years4 of 100 (Routine)
26 May 2026Kennebec, USdaily high max36.7 C (98.1 F)0.6 C (1.1 F)112 years40 of 100 (Notable)
25 May 2026Kennebec, USdaily high max35.6 C (96.1 F)0.6 C (1.1 F)40 years22 of 100 (Routine)
22 April 2026Kennebec, USdaily high max36.1 C (97.0 F)1.7 C (3.1 F)45 years25 of 100 (Routine)
25 March 2026Kennebec, USdaily high max29.4 C (84.9 F)1.1 C (2.0 F)119 years41 of 100 (Notable)
20 March 2026Kennebec, USdaily high max28.9 C (84.0 F)0.6 C (1.1 F)119 years40 of 100 (Notable)
8 March 2026Kennebec, USdaily high max23.9 C (75.0 F)1.1 C (2.0 F)125 years41 of 100 (Notable)
15 February 2026Kennebec, USdaily high max21.1 C (70.0 F)1.1 C (2.0 F)104 years41 of 100 (Notable)
13 January 2026Kennebec, USmonthly high min5.0 C (41.0 F)1.1 C (2.0 F)45 years34 of 100 (Routine)
3 October 2025Kennebec, USdaily high max (Tie)35.6 C (96.1 F)tie103 years10 of 100 (Routine)
17 September 2025Kennebec, USdaily rain25.9 mm (1.0 in)5.3 mm (0.21 in)75 years37 of 100 (Notable)
23 July 2025Kennebec, USdaily rain26.2 mm (1.0 in)3.1 mm (0.12 in)55 years28 of 100 (Routine)
15 May 2025Kennebec, USdaily rain38.9 mm (1.5 in)13.5 mm (0.5 in)82 years46 of 100 (Notable)
2 April 2025Kennebec, USdaily snowfall7.6 cm (3.0 in)2.5 cm (1.0 in)107 years43 of 100 (Notable)
19 February 2025Kennebec, USdaily low max (Tie)-15.6 C (3.9 F)tie130 years10 of 100 (Routine)
18 February 2025Kennebec, USdaily low max (Tie)-17.8 C (0.0 F)tie89 years9 of 100 (Routine)
30 December 2024Kennebec, USdaily rain15.7 mm (0.6 in)3.5 mm (0.14 in)93 years20 of 100 (Routine)
3 November 2024Kennebec, USmonthly high min (Tie)10.6 C (51.1 F)tie37 years7 of 100 (Routine)
30 September 2024Kennebec, USdaily high min18.9 C (66.0 F)2.2 C (4.0 F)35 years23 of 100 (Routine)

Climate Trend

111 complete years, 1893 to 2025
Annual mean temperature at Kennebec as warming stripes, 1893 to 2025 One stripe for each of 111 complete years at Kennebec, 1893 to 2025. Blue stripes are years cooler than the station's own mean of 8.7 C (47.7 F); red stripes are warmer. The coolest year was 1950, at 6.3 C (43.3 F), and the warmest was 1931, at 11.1 C (52.0 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1893: 6.8 C, -2.0 C from the station mean1895: 7.6 C, -1.1 C from the station mean1896: 7.1 C, -1.7 C from the station mean1897: 6.9 C, -1.8 C from the station mean1898: 8.0 C, -0.7 C from the station mean1902: 7.8 C, -0.9 C from the station mean1903: 7.1 C, -1.6 C from the station mean1904: 7.7 C, -1.0 C from the station mean1905: 7.1 C, -1.6 C from the station mean1906: 8.1 C, -0.6 C from the station mean1911: 8.5 C, -0.2 C from the station mean1913: 8.3 C, -0.4 C from the station mean1914: 8.7 C, 0.0 C from the station mean1915: 6.9 C, -1.8 C from the station mean1917: 6.3 C, -2.4 C from the station mean1919: 7.4 C, -1.3 C from the station mean1922: 7.3 C, -1.5 C from the station mean1923: 8.6 C, -0.1 C from the station mean1925: 8.6 C, -0.2 C from the station mean1926: 8.8 C, +0.1 C from the station mean1929: 7.4 C, -1.3 C from the station mean1930: 9.4 C, +0.7 C from the station mean1931: 11.1 C, +2.4 C from the station mean1932: 8.6 C, -0.2 C from the station mean1933: 10.4 C, +1.7 C from the station mean1934: 11.0 C, +2.2 C from the station mean1935: 9.4 C, +0.7 C from the station mean1936: 8.4 C, -0.4 C from the station mean1937: 8.2 C, -0.5 C from the station mean1938: 10.0 C, +1.2 C from the station mean1939: 10.4 C, +1.7 C from the station mean1940: 9.0 C, +0.2 C from the station mean1941: 9.8 C, +1.1 C from the station mean1945: 8.4 C, -0.3 C from the station mean1946: 9.3 C, +0.6 C from the station mean1947: 8.3 C, -0.4 C from the station mean1948: 8.1 C, -0.6 C from the station mean1949: 8.1 C, -0.6 C from the station mean1950: 6.3 C, -2.4 C from the station mean1951: 6.5 C, -2.2 C from the station mean1952: 8.1 C, -0.6 C from the station mean1953: 9.3 C, +0.6 C from the station mean1954: 9.7 C, +1.0 C from the station mean1955: 8.4 C, -0.3 C from the station mean1956: 8.2 C, -0.5 C from the station mean1957: 8.6 C, -0.1 C from the station mean1958: 8.5 C, -0.2 C from the station mean1959: 8.3 C, -0.5 C from the station mean1960: 7.3 C, -1.4 C from the station mean1961: 8.5 C, -0.2 C from the station mean1962: 7.8 C, -0.9 C from the station mean1963: 9.4 C, +0.7 C from the station mean1965: 7.2 C, -1.5 C from the station mean1966: 7.6 C, -1.1 C from the station mean1967: 8.2 C, -0.6 C from the station mean1968: 8.0 C, -0.7 C from the station mean1969: 8.3 C, -0.5 C from the station mean1970: 8.1 C, -0.6 C from the station mean1971: 8.3 C, -0.4 C from the station mean1972: 7.5 C, -1.2 C from the station mean1973: 9.5 C, +0.8 C from the station mean1974: 9.7 C, +1.0 C from the station mean1975: 8.8 C, 0.0 C from the station mean1976: 10.2 C, +1.5 C from the station mean1977: 9.3 C, +0.6 C from the station mean1978: 7.8 C, -0.9 C from the station mean1979: 7.9 C, -0.9 C from the station mean1980: 9.9 C, +1.2 C from the station mean1981: 10.2 C, +1.5 C from the station mean1982: 7.9 C, -0.8 C from the station mean1983: 8.9 C, +0.2 C from the station mean1984: 9.0 C, +0.3 C from the station mean1985: 7.7 C, -1.0 C from the station mean1986: 9.3 C, +0.6 C from the station mean1987: 10.6 C, +1.9 C from the station mean1988: 9.5 C, +0.8 C from the station mean1989: 8.6 C, -0.2 C from the station mean1990: 9.9 C, +1.2 C from the station mean1991: 9.8 C, +1.1 C from the station mean1992: 9.1 C, +0.4 C from the station mean1993: 7.6 C, -1.1 C from the station mean1994: 8.7 C, -0.1 C from the station mean1995: 8.7 C, 0.0 C from the station mean1996: 6.7 C, -2.0 C from the station mean1997: 8.7 C, 0.0 C from the station mean1999: 10.5 C, +1.7 C from the station mean2000: 9.5 C, +0.7 C from the station mean2001: 9.6 C, +0.9 C from the station mean2002: 9.8 C, +1.1 C from the station mean2003: 9.6 C, +0.9 C from the station mean2004: 10.0 C, +1.3 C from the station mean2005: 10.3 C, +1.6 C from the station mean2006: 10.6 C, +1.9 C from the station mean2007: 10.4 C, +1.7 C from the station mean2008: 8.2 C, -0.5 C from the station mean2010: 8.6 C, -0.1 C from the station mean2011: 8.3 C, -0.4 C from the station mean2012: 11.1 C, +2.3 C from the station mean2013: 8.0 C, -0.7 C from the station mean2014: 8.1 C, -0.6 C from the station mean2015: 10.3 C, +1.5 C from the station mean2016: 10.5 C, +1.8 C from the station mean2017: 9.8 C, +1.1 C from the station mean2018: 8.3 C, -0.4 C from the station mean2019: 7.0 C, -1.7 C from the station mean2020: 9.7 C, +1.0 C from the station mean2021: 10.3 C, +1.5 C from the station mean2022: 8.9 C, +0.2 C from the station mean2023: 9.3 C, +0.6 C from the station mean2024: 10.2 C, +1.5 C from the station mean2025: 10.2 C, +1.4 C from the station mean18931900191019201930194019501960197019801990200020102020
One stripe for each of 111 complete years at Kennebec, 1893 to 2025. Blue stripes are years cooler than the station's own mean of 8.7 C (47.7 F); red stripes are warmer. The coolest year was 1950, at 6.3 C (43.3 F), and the warmest was 1931, at 11.1 C (52.0 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Kennebec as warming stripes, 1893 to 2025
YearAnnual mean temperatureDifference from the station mean
18936.8 C-1.97 C
18957.6 C-1.13 C
18967.1 C-1.66 C
18976.9 C-1.83 C
18988.0 C-0.68 C
19027.8 C-0.95 C
19037.1 C-1.59 C
19047.7 C-1.05 C
19057.1 C-1.61 C
19068.1 C-0.65 C
19118.5 C-0.22 C
19138.3 C-0.38 C
19148.7 C+0.00 C
19156.9 C-1.80 C
19176.3 C-2.42 C
19197.4 C-1.35 C
19227.3 C-1.47 C
19238.6 C-0.14 C
19258.6 C-0.17 C
19268.8 C+0.08 C
19297.4 C-1.30 C
19309.4 C+0.69 C
193111.1 C+2.39 C
19328.6 C-0.17 C
193310.4 C+1.72 C
193411.0 C+2.24 C
19359.4 C+0.65 C
19368.4 C-0.36 C
19378.2 C-0.52 C
193810.0 C+1.23 C
193910.4 C+1.66 C
19409.0 C+0.23 C
19419.8 C+1.10 C
19458.4 C-0.35 C
19469.3 C+0.56 C
19478.3 C-0.43 C
19488.1 C-0.61 C
19498.1 C-0.59 C
19506.3 C-2.44 C
19516.5 C-2.19 C
19528.1 C-0.59 C
19539.3 C+0.61 C
19549.7 C+0.95 C
19558.4 C-0.33 C
19568.2 C-0.49 C
19578.6 C-0.13 C
19588.5 C-0.25 C
19598.3 C-0.46 C
19607.3 C-1.39 C
19618.5 C-0.18 C
19627.8 C-0.92 C
19639.4 C+0.70 C
19657.2 C-1.48 C
19667.6 C-1.09 C
19678.2 C-0.56 C
19688.0 C-0.68 C
19698.3 C-0.47 C
19708.1 C-0.65 C
19718.3 C-0.44 C
19727.5 C-1.20 C
19739.5 C+0.78 C
19749.7 C+0.99 C
19758.8 C+0.04 C
197610.2 C+1.49 C
19779.3 C+0.61 C
19787.8 C-0.89 C
19797.9 C-0.86 C
19809.9 C+1.21 C
198110.2 C+1.46 C
19827.9 C-0.84 C
19838.9 C+0.17 C
19849.0 C+0.27 C
19857.7 C-1.05 C
19869.3 C+0.59 C
198710.6 C+1.92 C
19889.5 C+0.81 C
19898.6 C-0.16 C
19909.9 C+1.19 C
19919.8 C+1.10 C
19929.1 C+0.35 C
19937.6 C-1.09 C
19948.7 C-0.07 C
19958.7 C+0.00 C
19966.7 C-1.99 C
19978.7 C-0.03 C
199910.5 C+1.73 C
20009.5 C+0.73 C
20019.6 C+0.92 C
20029.8 C+1.05 C
20039.6 C+0.85 C
200410.0 C+1.32 C
200510.3 C+1.57 C
200610.6 C+1.89 C
200710.4 C+1.65 C
20088.2 C-0.53 C
20108.6 C-0.13 C
20118.3 C-0.43 C
201211.1 C+2.33 C
20138.0 C-0.72 C
20148.1 C-0.64 C
201510.3 C+1.54 C
201610.5 C+1.79 C
20179.8 C+1.11 C
20188.3 C-0.45 C
20197.0 C-1.74 C
20209.7 C+1.00 C
202110.3 C+1.53 C
20228.9 C+0.22 C
20239.3 C+0.59 C
202410.2 C+1.46 C
202510.2 C+1.44 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1893 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 111 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kennebec
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1893 to 2025111Rise
Mean daily maximum0.09 C (0.02 to 0.16) per decade0.16 F (0.04 to 0.28) per decade1893 to 2025111Rise
Mean daily minimum0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1893 to 2025111Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1893 to 2026
Yearly extremes at Kennebec: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)48.3 C (118.9 F)193641.1 C (106.0 F)134
Coldest night (TNn)-42.8 C (-45.0 F)1899-31.7 C (-25.1 F)134
Wettest day (Rx1day)113.0 mm (4.4 in)189844.1 mm (1.7 in)134
Wettest five days (Rx5day)190.5 mm (7.5 in)199965.6 mm (2.6 in)134
Longest dry spell (CDD)86 days198137 days134

Hottest day (TXx)

Hottest day (TXx) at Kennebec by year The hottest day of the year at Kennebec, 1893 to 2026. The record is 48.3 C (118.9 F) in 1936, marked on the chart; the median year is 41.1 C (106.0 F). 10203040501900192019401960198020002020Record: 48.3 C (118.9 F) in 1936
The hottest day of the year at Kennebec, 1893 to 2026. The record is 48.3 C (118.9 F) in 1936, marked on the chart; the median year is 41.1 C (106.0 F).
Hottest day (TXx) at Kennebec by year
YearHottest day (TXx)
189341.7 C (107.1 F)
189445.0 C (113.0 F)
189540.6 C (105.1 F)
189640.0 C (104.0 F)
189740.0 C (104.0 F)
189840.0 C (104.0 F)
189929.4 C (84.9 F)
190042.2 C (108.0 F)
190142.8 C (109.0 F)
190242.2 C (108.0 F)
190340.0 C (104.0 F)
190443.3 C (109.9 F)
190538.9 C (102.0 F)
190639.4 C (102.9 F)
190741.1 C (106.0 F)
190840.6 C (105.1 F)
190940.0 C (104.0 F)
191040.0 C (104.0 F)
191141.7 C (107.1 F)
191240.6 C (105.1 F)
191340.6 C (105.1 F)
191441.7 C (107.1 F)
191534.4 C (93.9 F)
191638.9 C (102.0 F)
191742.8 C (109.0 F)
191840.0 C (104.0 F)
191939.4 C (102.9 F)
192015.6 C (60.1 F)
192140.6 C (105.1 F)
192238.9 C (102.0 F)
192338.3 C (100.9 F)
192439.4 C (102.9 F)
192541.1 C (106.0 F)
192643.3 C (109.9 F)
192740.0 C (104.0 F)
192841.1 C (106.0 F)
192941.7 C (107.1 F)
193042.2 C (108.0 F)
193144.4 C (111.9 F)
193241.7 C (107.1 F)
193347.2 C (117.0 F)
193445.6 C (114.1 F)
193543.9 C (111.0 F)
193648.3 C (118.9 F)
193745.6 C (114.1 F)
193844.4 C (111.9 F)
193944.4 C (111.9 F)
194045.0 C (113.0 F)
194142.8 C (109.0 F)
194240.0 C (104.0 F)
194341.7 C (107.1 F)
194440.0 C (104.0 F)
194540.6 C (105.1 F)
194640.6 C (105.1 F)
194745.0 C (113.0 F)
194840.6 C (105.1 F)
194942.2 C (108.0 F)
195037.8 C (100.0 F)
195138.3 C (100.9 F)
195243.3 C (109.9 F)
195340.0 C (104.0 F)
195442.8 C (109.0 F)
195543.3 C (109.9 F)
195641.1 C (106.0 F)
195740.0 C (104.0 F)
195839.4 C (102.9 F)
195943.3 C (109.9 F)
196040.6 C (105.1 F)
196139.4 C (102.9 F)
196241.1 C (106.0 F)
196342.2 C (108.0 F)
196438.9 C (102.0 F)
196545.6 C (114.1 F)
196645.0 C (113.0 F)
196739.4 C (102.9 F)
196839.4 C (102.9 F)
196941.1 C (106.0 F)
197040.6 C (105.1 F)
197142.2 C (108.0 F)
197241.1 C (106.0 F)
197343.3 C (109.9 F)
197441.7 C (107.1 F)
197542.2 C (108.0 F)
197644.4 C (111.9 F)
197740.6 C (105.1 F)
197840.6 C (105.1 F)
197941.7 C (107.1 F)
198044.4 C (111.9 F)
198140.6 C (105.1 F)
198240.6 C (105.1 F)
198342.2 C (108.0 F)
198440.0 C (104.0 F)
198541.7 C (107.1 F)
198639.4 C (102.9 F)
198742.2 C (108.0 F)
198843.9 C (111.0 F)
198942.8 C (109.0 F)
199038.9 C (102.0 F)
199141.7 C (107.1 F)
199237.2 C (99.0 F)
199336.1 C (97.0 F)
199437.8 C (100.0 F)
199539.4 C (102.9 F)
199638.3 C (100.9 F)
199737.8 C (100.0 F)
199841.7 C (107.1 F)
199941.1 C (106.0 F)
200041.1 C (106.0 F)
200141.1 C (106.0 F)
200242.8 C (109.0 F)
200343.9 C (111.0 F)
200438.9 C (102.0 F)
200543.3 C (109.9 F)
200644.4 C (111.9 F)
200741.7 C (107.1 F)
200836.7 C (98.1 F)
200936.7 C (98.1 F)
201040.6 C (105.1 F)
201140.6 C (105.1 F)
201243.9 C (111.0 F)
201337.2 C (99.0 F)
201441.1 C (106.0 F)
201538.3 C (100.9 F)
201640.6 C (105.1 F)
201741.7 C (107.1 F)
201838.3 C (100.9 F)
201938.3 C (100.9 F)
202040.0 C (104.0 F)
202141.7 C (107.1 F)
202241.7 C (107.1 F)
202341.1 C (106.0 F)
202440.0 C (104.0 F)
202540.6 C (105.1 F)
202642.2 C (108.0 F)

Coldest night (TNn)

Coldest night (TNn) at Kennebec by year The coldest night of the year at Kennebec, 1893 to 2026. The record is -42.8 C (-45.0 F) in 1899, marked on the chart; the median year is -31.7 C (-25.1 F). -45-40-35-30-25-201900192019401960198020002020Record: -42.8 C (-45.0 F) in 1899
The coldest night of the year at Kennebec, 1893 to 2026. The record is -42.8 C (-45.0 F) in 1899, marked on the chart; the median year is -31.7 C (-25.1 F).
Coldest night (TNn) at Kennebec by year
YearColdest night (TNn)
1893-33.9 C (-29.0 F)
1894-38.9 C (-38.0 F)
1895-35.6 C (-32.1 F)
1896-29.4 C (-20.9 F)
1897-31.7 C (-25.1 F)
1898-27.8 C (-18.0 F)
1899-42.8 C (-45.0 F)
1900-28.9 C (-20.0 F)
1901-30.6 C (-23.1 F)
1902-33.9 C (-29.0 F)
1903-32.8 C (-27.0 F)
1904-33.3 C (-27.9 F)
1905-42.2 C (-44.0 F)
1906-31.7 C (-25.1 F)
1907-30.6 C (-23.1 F)
1908-25.6 C (-14.1 F)
1909-30.6 C (-23.1 F)
1910-30.6 C (-23.1 F)
1911-30.6 C (-23.1 F)
1912-41.1 C (-42.0 F)
1913-30.0 C (-22.0 F)
1914-34.4 C (-29.9 F)
1915-30.0 C (-22.0 F)
1916-39.4 C (-38.9 F)
1917-38.9 C (-38.0 F)
1918-35.0 C (-31.0 F)
1919-34.4 C (-29.9 F)
1920-30.6 C (-23.1 F)
1921-27.8 C (-18.0 F)
1922-36.7 C (-34.1 F)
1923-31.7 C (-25.1 F)
1924-37.2 C (-35.0 F)
1925-32.8 C (-27.0 F)
1926-32.2 C (-26.0 F)
1927-36.1 C (-33.0 F)
1928-22.8 C (-9.0 F)
1929-32.8 C (-27.0 F)
1930-32.2 C (-26.0 F)
1931-24.4 C (-11.9 F)
1932-31.7 C (-25.1 F)
1933-33.3 C (-27.9 F)
1934-30.0 C (-22.0 F)
1935-28.9 C (-20.0 F)
1936-40.0 C (-40.0 F)
1937-32.2 C (-26.0 F)
1938-33.3 C (-27.9 F)
1939-31.1 C (-24.0 F)
1940-34.4 C (-29.9 F)
1941-26.1 C (-15.0 F)
1942-31.7 C (-25.1 F)
1943-32.8 C (-27.0 F)
1944-36.1 C (-33.0 F)
1945-27.8 C (-18.0 F)
1946-26.7 C (-16.1 F)
1947-31.7 C (-25.1 F)
1948-33.9 C (-29.0 F)
1949-35.6 C (-32.1 F)
1950-33.9 C (-29.0 F)
1951-33.3 C (-27.9 F)
1952-27.8 C (-18.0 F)
1953-27.8 C (-18.0 F)
1954-36.1 C (-33.0 F)
1955-33.9 C (-29.0 F)
1956-33.3 C (-27.9 F)
1957-30.0 C (-22.0 F)
1958-32.2 C (-26.0 F)
1959-35.0 C (-31.0 F)
1960-33.3 C (-27.9 F)
1961-30.6 C (-23.1 F)
1962-37.2 C (-35.0 F)
1963-33.3 C (-27.9 F)
1964-30.0 C (-22.0 F)
1965-30.0 C (-22.0 F)
1966-35.0 C (-31.0 F)
1967-32.8 C (-27.0 F)
1968-32.8 C (-27.0 F)
1969-28.9 C (-20.0 F)
1970-36.7 C (-34.1 F)
1971-35.0 C (-31.0 F)
1972-31.1 C (-24.0 F)
1973-30.0 C (-22.0 F)
1974-28.9 C (-20.0 F)
1975-30.6 C (-23.1 F)
1976-28.9 C (-20.0 F)
1977-32.2 C (-26.0 F)
1978-30.6 C (-23.1 F)
1979-31.1 C (-24.0 F)
1980-29.4 C (-20.9 F)
1981-30.0 C (-22.0 F)
1982-32.2 C (-26.0 F)
1983-35.0 C (-31.0 F)
1984-30.6 C (-23.1 F)
1985-31.7 C (-25.1 F)
1986-26.1 C (-15.0 F)
1987-24.4 C (-11.9 F)
1988-38.3 C (-36.9 F)
1989-33.9 C (-29.0 F)
1990-34.4 C (-29.9 F)
1991-28.3 C (-18.9 F)
1992-23.3 C (-9.9 F)
1993-30.0 C (-22.0 F)
1994-38.9 C (-38.0 F)
1995-26.1 C (-15.0 F)
1996-36.1 C (-33.0 F)
1997-27.2 C (-17.0 F)
1998-31.7 C (-25.1 F)
1999-28.3 C (-18.9 F)
2000-30.0 C (-22.0 F)
2001-26.7 C (-16.1 F)
2002-26.7 C (-16.1 F)
2003-28.9 C (-20.0 F)
2004-26.7 C (-16.1 F)
2005-28.9 C (-20.0 F)
2006-27.8 C (-18.0 F)
2007-32.8 C (-27.0 F)
2008-26.7 C (-16.1 F)
2009-34.4 C (-29.9 F)
2010-31.1 C (-24.0 F)
2011-28.9 C (-20.0 F)
2012-25.0 C (-13.0 F)
2013-31.1 C (-24.0 F)
2014-30.0 C (-22.0 F)
2015-28.3 C (-18.9 F)
2016-33.3 C (-27.9 F)
2017-33.9 C (-29.0 F)
2018-37.2 C (-35.0 F)
2019-28.3 C (-18.9 F)
2020-25.6 C (-14.1 F)
2021-32.2 C (-26.0 F)
2022-28.9 C (-20.0 F)
2023-28.9 C (-20.0 F)
2024-30.0 C (-22.0 F)
2025-32.2 C (-26.0 F)
2026-26.7 C (-16.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Kennebec by year The wettest day of the year at Kennebec, 1893 to 2026. The record is 113.0 mm (4.4 in) in 1898, marked on the chart; the median year is 44.1 mm (1.7 in). 02550751001251900192019401960198020002020Record: 113.0 mm (4.4 in) in 1898
The wettest day of the year at Kennebec, 1893 to 2026. The record is 113.0 mm (4.4 in) in 1898, marked on the chart; the median year is 44.1 mm (1.7 in).
Wettest day (Rx1day) at Kennebec by year
YearWettest day (Rx1day)
189331.8 mm (1.3 in)
189418.0 mm (0.7 in)
189544.5 mm (1.8 in)
189630.5 mm (1.2 in)
189745.7 mm (1.8 in)
1898113.0 mm (4.4 in)
189950.8 mm (2.0 in)
190060.2 mm (2.4 in)
190170.4 mm (2.8 in)
190228.2 mm (1.1 in)
190322.9 mm (0.9 in)
190422.9 mm (0.9 in)
190527.4 mm (1.1 in)
190654.6 mm (2.1 in)
190736.6 mm (1.4 in)
190882.0 mm (3.2 in)
190971.1 mm (2.8 in)
191034.0 mm (1.3 in)
191153.8 mm (2.1 in)
191236.8 mm (1.4 in)
191326.7 mm (1.1 in)
191451.3 mm (2.0 in)
191554.6 mm (2.1 in)
191640.6 mm (1.6 in)
191739.4 mm (1.6 in)
191868.6 mm (2.7 in)
191973.2 mm (2.9 in)
192015.2 mm (0.6 in)
192144.7 mm (1.8 in)
192238.1 mm (1.5 in)
192352.1 mm (2.1 in)
192432.3 mm (1.3 in)
192534.3 mm (1.4 in)
192639.4 mm (1.6 in)
192727.9 mm (1.1 in)
192821.8 mm (0.9 in)
192938.1 mm (1.5 in)
193033.8 mm (1.3 in)
193122.9 mm (0.9 in)
193236.8 mm (1.4 in)
193329.0 mm (1.1 in)
193436.1 mm (1.4 in)
193529.7 mm (1.2 in)
193629.2 mm (1.1 in)
193765.5 mm (2.6 in)
193855.4 mm (2.2 in)
193961.0 mm (2.4 in)
194026.7 mm (1.1 in)
194147.2 mm (1.9 in)
194278.7 mm (3.1 in)
194325.4 mm (1.0 in)
194454.1 mm (2.1 in)
194542.9 mm (1.7 in)
194644.7 mm (1.8 in)
194714.0 mm (0.6 in)
194843.7 mm (1.7 in)
194940.1 mm (1.6 in)
195056.1 mm (2.2 in)
195152.8 mm (2.1 in)
195246.5 mm (1.8 in)
195329.2 mm (1.1 in)
195456.6 mm (2.2 in)
195532.0 mm (1.3 in)
195648.3 mm (1.9 in)
195733.0 mm (1.3 in)
195833.0 mm (1.3 in)
195925.4 mm (1.0 in)
196034.8 mm (1.4 in)
196141.9 mm (1.6 in)
196238.9 mm (1.5 in)
196333.0 mm (1.3 in)
196459.2 mm (2.3 in)
196547.2 mm (1.9 in)
196636.1 mm (1.4 in)
196754.6 mm (2.1 in)
196841.4 mm (1.6 in)
196942.9 mm (1.7 in)
197058.4 mm (2.3 in)
197176.2 mm (3.0 in)
197227.9 mm (1.1 in)
197358.9 mm (2.3 in)
197461.0 mm (2.4 in)
197548.3 mm (1.9 in)
197668.6 mm (2.7 in)
197754.6 mm (2.1 in)
197843.2 mm (1.7 in)
197935.6 mm (1.4 in)
198059.7 mm (2.4 in)
198126.7 mm (1.1 in)
198245.7 mm (1.8 in)
198331.8 mm (1.3 in)
198434.3 mm (1.4 in)
198535.6 mm (1.4 in)
1986101.6 mm (4.0 in)
198731.8 mm (1.3 in)
198830.5 mm (1.2 in)
198950.8 mm (2.0 in)
199058.4 mm (2.3 in)
199146.2 mm (1.8 in)
199231.2 mm (1.2 in)
199346.2 mm (1.8 in)
199439.9 mm (1.6 in)
199558.4 mm (2.3 in)
199651.6 mm (2.0 in)
199781.8 mm (3.2 in)
199865.5 mm (2.6 in)
199994.7 mm (3.7 in)
200034.0 mm (1.3 in)
200134.3 mm (1.4 in)
200248.3 mm (1.9 in)
200336.6 mm (1.4 in)
200454.9 mm (2.2 in)
200542.2 mm (1.7 in)
200630.5 mm (1.2 in)
200757.2 mm (2.3 in)
200856.4 mm (2.2 in)
200945.2 mm (1.8 in)
201063.8 mm (2.5 in)
201148.3 mm (1.9 in)
201234.3 mm (1.4 in)
201352.1 mm (2.1 in)
201456.4 mm (2.2 in)
201533.8 mm (1.3 in)
201648.3 mm (1.9 in)
201738.1 mm (1.5 in)
201881.3 mm (3.2 in)
2019102.4 mm (4.0 in)
202043.2 mm (1.7 in)
202189.2 mm (3.5 in)
202251.6 mm (2.0 in)
202364.8 mm (2.6 in)
202467.8 mm (2.7 in)
202541.9 mm (1.6 in)
202658.7 mm (2.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Kennebec by year The wettest five days of the year at Kennebec, 1893 to 2026. The record is 190.5 mm (7.5 in) in 1999, marked on the chart; the median year is 65.6 mm (2.6 in). 0501001502001900192019401960198020002020Record: 190.5 mm (7.5 in) in 1999
The wettest five days of the year at Kennebec, 1893 to 2026. The record is 190.5 mm (7.5 in) in 1999, marked on the chart; the median year is 65.6 mm (2.6 in).
Wettest five days (Rx5day) at Kennebec by year
YearWettest five days (Rx5day)
189344.0 mm (1.7 in)
189433.3 mm (1.3 in)
189589.8 mm (3.5 in)
189643.6 mm (1.7 in)
189796.5 mm (3.8 in)
1898121.7 mm (4.8 in)
189994.7 mm (3.7 in)
190073.7 mm (2.9 in)
190141.7 mm (1.6 in)
190232.8 mm (1.3 in)
190353.3 mm (2.1 in)
190433.2 mm (1.3 in)
190559.7 mm (2.4 in)
1906111.5 mm (4.4 in)
190754.1 mm (2.1 in)
190882.0 mm (3.2 in)
1909128.7 mm (5.1 in)
191052.3 mm (2.1 in)
1911115.3 mm (4.5 in)
191259.6 mm (2.3 in)
191343.9 mm (1.7 in)
191489.6 mm (3.5 in)
1915113.2 mm (4.5 in)
191658.4 mm (2.3 in)
191744.5 mm (1.8 in)
191878.3 mm (3.1 in)
191988.9 mm (3.5 in)
192017.7 mm (0.7 in)
192172.4 mm (2.9 in)
192278.7 mm (3.1 in)
192365.5 mm (2.6 in)
192449.7 mm (2.0 in)
192580.0 mm (3.1 in)
192665.6 mm (2.6 in)
192768.6 mm (2.7 in)
192845.4 mm (1.8 in)
192948.8 mm (1.9 in)
193053.6 mm (2.1 in)
193136.9 mm (1.5 in)
193255.2 mm (2.2 in)
193338.9 mm (1.5 in)
193449.8 mm (2.0 in)
193556.9 mm (2.2 in)
193638.6 mm (1.5 in)
193771.6 mm (2.8 in)
193869.6 mm (2.7 in)
193979.5 mm (3.1 in)
194047.5 mm (1.9 in)
194151.3 mm (2.0 in)
194280.2 mm (3.2 in)
194345.5 mm (1.8 in)
194463.0 mm (2.5 in)
194562.8 mm (2.5 in)
194680.2 mm (3.2 in)
194724.1 mm (0.9 in)
194858.0 mm (2.3 in)
194954.1 mm (2.1 in)
1950100.6 mm (4.0 in)
195155.3 mm (2.2 in)
195255.1 mm (2.2 in)
195372.2 mm (2.8 in)
1954100.3 mm (3.9 in)
195553.5 mm (2.1 in)
195658.3 mm (2.3 in)
195759.7 mm (2.4 in)
195849.8 mm (2.0 in)
195961.5 mm (2.4 in)
196036.8 mm (1.4 in)
196156.4 mm (2.2 in)
196273.2 mm (2.9 in)
196362.0 mm (2.4 in)
1964117.8 mm (4.6 in)
196582.8 mm (3.3 in)
196650.8 mm (2.0 in)
196772.4 mm (2.9 in)
196895.5 mm (3.8 in)
196969.6 mm (2.7 in)
197088.3 mm (3.5 in)
197184.6 mm (3.3 in)
197246.1 mm (1.8 in)
197374.2 mm (2.9 in)
197461.0 mm (2.4 in)
197550.3 mm (2.0 in)
197668.6 mm (2.7 in)
197771.1 mm (2.8 in)
197858.4 mm (2.3 in)
197956.0 mm (2.2 in)
198072.6 mm (2.9 in)
198158.5 mm (2.3 in)
198272.7 mm (2.9 in)
198340.9 mm (1.6 in)
198456.7 mm (2.2 in)
198560.4 mm (2.4 in)
1986121.0 mm (4.8 in)
198759.3 mm (2.3 in)
198872.4 mm (2.9 in)
198960.2 mm (2.4 in)
199064.0 mm (2.5 in)
199185.9 mm (3.4 in)
199280.9 mm (3.2 in)
199357.2 mm (2.3 in)
199458.7 mm (2.3 in)
199566.0 mm (2.6 in)
199685.3 mm (3.4 in)
199783.6 mm (3.3 in)
199890.4 mm (3.6 in)
1999190.5 mm (7.5 in)
200038.4 mm (1.5 in)
200174.9 mm (2.9 in)
200262.5 mm (2.5 in)
200387.2 mm (3.4 in)
200484.2 mm (3.3 in)
200583.1 mm (3.3 in)
200637.4 mm (1.5 in)
200798.2 mm (3.9 in)
200884.1 mm (3.3 in)
200960.5 mm (2.4 in)
201088.7 mm (3.5 in)
201183.9 mm (3.3 in)
201244.7 mm (1.8 in)
201379.5 mm (3.1 in)
201467.8 mm (2.7 in)
201566.5 mm (2.6 in)
201654.1 mm (2.1 in)
201751.1 mm (2.0 in)
2018119.9 mm (4.7 in)
2019116.1 mm (4.6 in)
202057.2 mm (2.3 in)
2021107.2 mm (4.2 in)
202267.6 mm (2.7 in)
2023108.8 mm (4.3 in)
202468.3 mm (2.7 in)
202570.9 mm (2.8 in)
202677.5 mm (3.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Kennebec by year The longest dry spell of the year at Kennebec, 1893 to 2026. The record is 86 days in 1981, marked on the chart; the median year is 37 days. 0204060801001900192019401960198020002020Record: 86 days in 1981
The longest dry spell of the year at Kennebec, 1893 to 2026. The record is 86 days in 1981, marked on the chart; the median year is 37 days.
Longest dry spell (CDD) at Kennebec by year
YearLongest dry spell (CDD)
189337 days
189436 days
189543 days
189633 days
189726 days
189840 days
189927 days
190055 days
190127 days
190231 days
190333 days
190441 days
190533 days
190632 days
190758 days
190837 days
190936 days
191037 days
191137 days
191254 days
191345 days
191443 days
191528 days
191617 days
191737 days
191818 days
191931 days
192025 days
192160 days
192279 days
192346 days
192433 days
192544 days
192663 days
192728 days
192833 days
192917 days
193031 days
193133 days
193229 days
193355 days
193429 days
193553 days
193641 days
193735 days
193833 days
193954 days
194022 days
194129 days
194237 days
194337 days
194432 days
194530 days
194635 days
194737 days
194827 days
194951 days
195026 days
195130 days
195277 days
195335 days
195455 days
195538 days
195626 days
195745 days
195854 days
195933 days
196029 days
196143 days
196233 days
196333 days
196469 days
196546 days
196639 days
196749 days
196837 days
196923 days
197042 days
197129 days
197242 days
197335 days
197469 days
197538 days
197634 days
197726 days
197847 days
197949 days
198037 days
198186 days
198242 days
198363 days
198434 days
198544 days
198642 days
198734 days
198840 days
198931 days
199067 days
199138 days
199239 days
199328 days
199433 days
199537 days
199631 days
199747 days
199839 days
199938 days
200027 days
200132 days
200226 days
200338 days
200460 days
200533 days
200635 days
200740 days
200820 days
200922 days
201029 days
201126 days
201228 days
201327 days
201441 days
201529 days
201644 days
201750 days
201823 days
201926 days
202043 days
202129 days
202252 days
202333 days
202439 days
202535 days
202638 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

111 years with a frost

Across 111 years with a frost, the median last spring frost at Kennebec falls on 13 May and the median first autumn frost on 24 September, which leaves a median of 136 days between them.

In 1994 to 2025 the median growing season was 143 days. That is 7 days more than in 1893 to 1938.

Fitted over all years, the growing season changes by +1.3 days per decade at this station.

Frost dates and growing season at Kennebec
MeasureMedian, all yearsEarliest period (1893 to 1938)Recent period (1994 to 2025)Recent against earliestFitted trend
Last spring frost13 May14 May12 May2 days earlier-0.7 days per decade
First autumn frost24 September21 September2 October11 days later+0.6 days per decade
Growing days136 days136 days143 days7 days more+1.3 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

120 years, 1894 to 2025

A day with at least 43.5 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 106.5 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Kennebec: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years43.5 mm (1.7 in)
5 years59.5 mm (2.3 in)
10 years70.5 mm (2.8 in)
25 years84.7 mm (3.3 in)
50 years95.5 mm (3.8 in)
100 years106.5 mm (4.2 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 120 years of values from 1894 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 113.0 mm (4.4 in) in 1898; 102.4 mm (4.0 in) in 2019; 101.6 mm (4.0 in) in 1986.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Kennebec had a mean temperature of 9.3 C (48.8 F) and 532.5 mm (21.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Butte (United States, 137 km away), Pickstown (United States, 142 km away) and Niobrara (United States, 195 km away).

Climate twins of Kennebec: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
ButteUnited States137 km (85 mi)9.4 C (48.8 F)576.2 mm (22.7 in)0.89
PickstownUnited States142 km (88 mi)9.2 C (48.6 F)558.0 mm (22.0 in)0.96
NiobraraUnited States195 km (121 mi)9.5 C (49.2 F)558.0 mm (22.0 in)0.99

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Kennebec standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Kennebec threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).