Built 2026-10-15 (15 October 2026)

Dannemora Weather Records (USC00301966)

Record envelope, standing records and threshold days for Dannemora (USC00301966), New York, United States, with 121 years of record.

Key Facts for Dannemora

  • Dannemora (USC00301966) is a weather station in New York, United States at 44.72 latitude and -73.72 longitude, 408 m (1,340 ft) above sea level.
  • The station reports from 1906 to 2026, 121 years of record.
  • 1,464 records set at Dannemora still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Dannemora set a daily record precipitation of 32.3 mm (1.3 in) on 3 April 2026.

About the Station

  • Location: New York, United States, 44.72 latitude, -73.72 longitude.
  • Elevation: 408 m (1,340 ft).
  • Period of record: 1906 to 2026, 121 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

3 days at or beyond a record
Daily record high and record low at Dannemora, with 2026 drawn through them The band shows the record high and record low for each calendar day at Dannemora. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Dannemora. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Dannemora, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.8 C (64.0 F)-36.7 C (-34.1 F)8.3 C (46.9 F)-33.9 C (-29.0 F)
Feb19.4 C (66.9 F)-39.4 C (-38.9 F)9.4 C (48.9 F)-28.9 C (-20.0 F)
Mar26.1 C (79.0 F)-30.0 C (-22.0 F)18.3 C (64.9 F)-24.4 C (-11.9 F)
Apr31.1 C (88.0 F)-18.3 C (-0.9 F)22.8 C (73.0 F)-10.0 C (14.0 F)
May34.4 C (93.9 F)-7.8 C (18.0 F)n/an/a
Jun36.1 C (97.0 F)-1.1 C (30.0 F)31.7 C (89.1 F)7.2 C (45.0 F)
Jul36.7 C (98.1 F)4.4 C (39.9 F)32.8 C (91.0 F)8.9 C (48.0 F)
Aug36.7 C (98.1 F)0.6 C (33.1 F)n/an/a
Sep35.0 C (95.0 F)-3.9 C (25.0 F)n/an/a
Oct31.1 C (88.0 F)-10.6 C (12.9 F)n/an/a
Nov23.9 C (75.0 F)-22.2 C (-8.0 F)n/an/a
Dec18.3 C (64.9 F)-37.8 C (-36.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Dannemora by the year they were set 1,464 records at Dannemora still stand. 1914 holds the most, with 34. 0102030401906: 171907: 171908: 171909: 91910: 101911: 311912: 231913: 221914: 341915: 131916: 191917: 221918: 261919: 201920: 161921: 121922: 141923: 191924: 111925: 311926: 311927: 31928: 151929: 201930: 201931: 121932: 141933: 151934: 91935: 21936: 181937: 31938: 131939: 131940: 151941: 171942: 121943: 111944: 181945: 191947: 251948: 131949: 241950: 131951: 111952: 71953: 191954: 81955: 101956: 121957: 91958: 81959: 141960: 51961: 71962: 101963: 101964: 81965: 161966: 161967: 71968: 141969: 41970: 101971: 81972: 51973: 81974: 121975: 121976: 181977: 151978: 131979: 151980: 61981: 121982: 171983: 71984: 161985: 41986: 81987: 91988: 131989: 61990: 151991: 121992: 61993: 51994: 91995: 121996: 71997: 21998: 51999: 102000: 52001: 92002: 192003: 82004: 82005: 102006: 82007: 142008: 42009: 32010: 82011: 32012: 142013: 42014: 82015: 72016: 62017: 132018: 112019: 62020: 42021: 112022: 152023: 152024: 122025: 42026: 51906191819301942195519671979199120032015
1,464 records at Dannemora still stand. 1914 holds the most, with 34.
Standing records at Dannemora by the year they were set
Year setStanding records
190617
190717
190817
19099
191010
191131
191223
191322
191434
191513
191619
191722
191826
191920
192016
192112
192214
192319
192411
192531
192631
19273
192815
192920
193020
193112
193214
193315
19349
19352
193618
19373
193813
193913
194015
194117
194212
194311
194418
194519
194725
194813
194924
195013
195111
19527
195319
19548
195510
195612
19579
19588
195914
19605
19617
196210
196310
19648
196516
196616
19677
196814
19694
197010
19718
19725
19738
197412
197512
197618
197715
197813
197915
19806
198112
198217
19837
198416
19854
19868
19879
198813
19896
199015
199112
19926
19935
19949
199512
19967
19972
19985
199910
20005
20019
200219
20038
20048
200510
20068
200714
20084
20093
20108
20113
201214
20134
20148
20157
20166
201713
201811
20196
20204
202111
202215
202315
202412
20254
20265

All-Time Record Progression

4 new records
When Dannemora set new all-time records 4 all-time records were set at Dannemora between 11 August 1944 and 4 February 2023. Each dot is a new record. Record high maximum temperatureRecord low maximum temperatureRecord daily precipitationRecord low minimum temperature11 August 1944: Record high maximum temperature 36.7 C (98.1 F)4 January 1981: Record low maximum temperature -26.7 C (-16.1 F)17 September 1999: Record daily precipitation 115.6 mm (4.6 in)4 February 2023: Record low minimum temperature -39.4 C (-38.9 F)19501960197019801990200020102020
4 all-time records were set at Dannemora between 11 August 1944 and 4 February 2023. Each dot is a new record.
When Dannemora set new all-time records
DateKindDetail
1944-08-11Record high maximum temperatureRecord high maximum temperature 36.7 C (98.1 F)
1981-01-04Record low maximum temperatureRecord low maximum temperature -26.7 C (-16.1 F)
1999-09-17Record daily precipitationRecord daily precipitation 115.6 mm (4.6 in)
2023-02-04Record low minimum temperatureRecord low minimum temperature -39.4 C (-38.9 F)

Wettest Day of Each Month

Sep: 115.6 mm (4.6 in)
Record daily precipitation for each month at Dannemora The wettest day on record for each calendar month at Dannemora. The most was 115.6 mm (4.6 in) on 17 September 1999. 050100150 Jan: 70.9 mm (2.8 in), 9 January 1998 Jan Feb: 58.9 mm (2.3 in), 17 February 1954 Feb Mar: 100.3 mm (3.9 in), 6 March 1920 Mar Apr: 58.4 mm (2.3 in), 9 April 2000 Apr May: 68.6 mm (2.7 in), 26 May 2013 May Jun: 77.5 mm (3.1 in), 25 June 2013 Jun Jul: 86.4 mm (3.4 in), 11 July 1970 Jul Aug: 83.8 mm (3.3 in), 28 August 2011 Aug Sep: 115.6 mm (4.6 in), 17 September 1999 Sep Oct: 78.5 mm (3.1 in), 22 October 1995 Oct Nov: 92.5 mm (3.6 in), 9 November 1996 Nov Dec: 61.2 mm (2.4 in), 13 December 1983 Dec
The wettest day on record for each calendar month at Dannemora. The most was 115.6 mm (4.6 in) on 17 September 1999.
Record daily precipitation for each month at Dannemora
MonthRecord daily precipitation (mm)Date
Jan70.9 mm (2.8 in)9 January 1998
Feb58.9 mm (2.3 in)17 February 1954
Mar100.3 mm (3.9 in)6 March 1920
Apr58.4 mm (2.3 in)9 April 2000
May68.6 mm (2.7 in)26 May 2013
Jun77.5 mm (3.1 in)25 June 2013
Jul86.4 mm (3.4 in)11 July 1970
Aug83.8 mm (3.3 in)28 August 2011
Sep115.6 mm (4.6 in)17 September 1999
Oct78.5 mm (3.1 in)22 October 1995
Nov92.5 mm (3.6 in)9 November 1996
Dec61.2 mm (2.4 in)13 December 1983

Period of Record Coverage

1906 to 2026
Days with data per year at Dannemora 121 years of record at Dannemora, 1906 to 2026. 16 years have data for under 90 percent of days and are left out of rankings: 1916, 1917, 1918, 1919, 1921, 1945, 1946, 1982 and others. 1906: 360 of 365 days1907: 355 of 365 days1908: 362 of 366 days1909: 363 of 365 days1910: 362 of 365 days1911: 363 of 365 days1912: 365 of 366 days1913: 361 of 365 days1914: 363 of 365 days1915: 359 of 365 days1916: 329 of 366 days1917: 321 of 365 days1918: 312 of 365 days1919: 309 of 365 days1920: 330 of 366 days1921: 316 of 365 days1922: 363 of 365 days1923: 365 of 365 days1924: 366 of 366 days1925: 352 of 365 days1926: 362 of 365 days1927: 333 of 365 days1928: 366 of 366 days1929: 365 of 365 days1930: 363 of 365 days1931: 365 of 365 days1932: 365 of 366 days1933: 364 of 365 days1934: 365 of 365 days1935: 364 of 365 days1936: 365 of 366 days1937: 364 of 365 days1938: 364 of 365 days1939: 365 of 365 days1940: 365 of 366 days1941: 363 of 365 days1942: 365 of 365 days1943: 365 of 365 days1944: 366 of 366 days1945: 186 of 365 days1946: 42 of 365 days1947: 365 of 365 days1948: 366 of 366 days1949: 360 of 365 days1950: 354 of 365 days1951: 363 of 365 days1952: 360 of 366 days1953: 360 of 365 days1954: 363 of 365 days1955: 361 of 365 days1956: 361 of 366 days1957: 363 of 365 days1958: 357 of 365 days1959: 363 of 365 days1960: 363 of 366 days1961: 363 of 365 days1962: 362 of 365 days1963: 363 of 365 days1964: 364 of 366 days1965: 362 of 365 days1966: 363 of 365 days1967: 364 of 365 days1968: 362 of 366 days1969: 364 of 365 days1970: 364 of 365 days1971: 365 of 365 days1972: 363 of 366 days1973: 364 of 365 days1974: 364 of 365 days1975: 362 of 365 days1976: 364 of 366 days1977: 356 of 365 days1978: 360 of 365 days1979: 363 of 365 days1980: 362 of 366 days1981: 361 of 365 days1982: 296 of 365 days1983: 308 of 365 days1984: 324 of 366 days1985: 321 of 365 days1986: 313 of 365 days1987: 349 of 365 days1988: 361 of 366 days1989: 351 of 365 days1990: 348 of 365 days1991: 350 of 365 days1992: 353 of 366 days1993: 360 of 365 days1994: 357 of 365 days1995: 355 of 365 days1996: 361 of 366 days1997: 354 of 365 days1998: 354 of 365 days1999: 356 of 365 days2000: 323 of 366 days2001: 350 of 365 days2002: 361 of 365 days2003: 363 of 365 days2004: 359 of 366 days2005: 361 of 365 days2006: 362 of 365 days2007: 357 of 365 days2008: 358 of 366 days2009: 356 of 365 days2010: 359 of 365 days2011: 360 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 361 of 365 days2016: 335 of 366 days2017: 304 of 365 days2018: 363 of 365 days2019: 332 of 365 days2020: 331 of 366 days2021: 359 of 365 days2022: 362 of 365 days2023: 362 of 365 days2024: 303 of 366 days2025: 332 of 365 days2026: 179 of 365 days192019401960198020002020
121 years of record at Dannemora, 1906 to 2026. 16 years have data for under 90 percent of days and are left out of rankings: 1916, 1917, 1918, 1919, 1921, 1945, 1946, 1982 and others.
Days with data per year at Dannemora
YearDays with dataShare of yearComplete
190636099%Yes
190735597%Yes
190836299%Yes
190936399%Yes
191036299%Yes
191136399%Yes
1912365100%Yes
191336199%Yes
191436399%Yes
191535998%Yes
191632990%No
191732188%No
191831285%No
191930985%No
192033090%Yes
192131687%No
192236399%Yes
1923365100%Yes
1924366100%Yes
192535296%Yes
192636299%Yes
192733391%Yes
1928366100%Yes
1929365100%Yes
193036399%Yes
1931365100%Yes
1932365100%Yes
1933364100%Yes
1934365100%Yes
1935364100%Yes
1936365100%Yes
1937364100%Yes
1938364100%Yes
1939365100%Yes
1940365100%Yes
194136399%Yes
1942365100%Yes
1943365100%Yes
1944366100%Yes
194518651%No
19464212%No
1947365100%Yes
1948366100%Yes
194936099%Yes
195035497%Yes
195136399%Yes
195236098%Yes
195336099%Yes
195436399%Yes
195536199%Yes
195636199%Yes
195736399%Yes
195835798%Yes
195936399%Yes
196036399%Yes
196136399%Yes
196236299%Yes
196336399%Yes
196436499%Yes
196536299%Yes
196636399%Yes
1967364100%Yes
196836299%Yes
1969364100%Yes
1970364100%Yes
1971365100%Yes
197236399%Yes
1973364100%Yes
1974364100%Yes
197536299%Yes
197636499%Yes
197735698%Yes
197836099%Yes
197936399%Yes
198036299%Yes
198136199%Yes
198229681%No
198330884%No
198432489%No
198532188%No
198631386%No
198734996%Yes
198836199%Yes
198935196%Yes
199034895%Yes
199135096%Yes
199235396%Yes
199336099%Yes
199435798%Yes
199535597%Yes
199636199%Yes
199735497%Yes
199835497%Yes
199935698%Yes
200032388%No
200135096%Yes
200236199%Yes
200336399%Yes
200435998%Yes
200536199%Yes
200636299%Yes
200735798%Yes
200835898%Yes
200935698%Yes
201035998%Yes
201136099%Yes
2012366100%Yes
2013364100%Yes
2014365100%Yes
201536199%Yes
201633592%Yes
201730483%No
201836399%Yes
201933291%Yes
202033190%Yes
202135998%Yes
202236299%Yes
202336299%Yes
202430383%No
202533291%Yes
202617949%No

Latest Records

20
Latest records at Dannemora
DateStationRecordValueBeat old record byOld record stoodSignificance
3 April 2026Dannemora, USdaily rain32.3 mm (1.3 in)5.4 mm (0.21 in)5 years18 of 100 (Routine)
10 March 2026Dannemora, USdaily high max18.3 C (64.9 F)1.1 C (2.0 F)9 years13 of 100 (Routine)
8 February 2026Dannemora, USdaily low max-15.6 C (3.9 F)0.6 C (1.1 F)32 years19 of 100 (Routine)
26 January 2026Dannemora, USdaily rain20.3 mm (0.8 in)1.5 mm (0.06 in)48 years20 of 100 (Routine)
25 January 2026Dannemora, USdaily low max-20.0 C (-4.0 F)0.6 C (1.1 F)119 years40 of 100 (Notable)
25 January 2026Dannemora, USdaily low min-30.0 C (-22.0 F)0.6 C (1.1 F)80 years34 of 100 (Routine)
24 January 2026Dannemora, USdaily low min-33.9 C (-29.0 F)5.0 C (9.0 F)119 years46 of 100 (Notable)
19 December 2025Dannemora, USdaily high max12.8 C (55.0 F)3.4 C (6.1 F)59 years32 of 100 (Routine)
23 October 2025Dannemora, USdaily rain31.8 mm (1.3 in)6.4 mm (0.25 in)26 years23 of 100 (Routine)
20 October 2025Dannemora, USdaily high min (Tie)13.3 C (55.9 F)tie72 years7 of 100 (Routine)
7 October 2025Dannemora, USdaily high max (Tie)27.8 C (82.0 F)tie62 years7 of 100 (Routine)
6 October 2025Dannemora, USdaily high max27.8 C (82.0 F)1.1 C (2.0 F)112 years41 of 100 (Notable)
5 October 2025Dannemora, USdaily high max28.9 C (84.0 F)1.1 C (2.0 F)2 years11 of 100 (Routine)
25 September 2025Dannemora, USdaily rain24.6 mm (1.0 in)0.7 mm (0.03 in)34 years20 of 100 (Routine)
16 May 2025Dannemora, USdaily high min19.4 C (66.9 F)3.3 C (5.9 F)92 years43 of 100 (Notable)
29 March 2025Dannemora, USdaily rain20.3 mm (0.8 in)0.7 mm (0.03 in)106 years20 of 100 (Routine)
17 December 2024Dannemora, USdaily high min2.2 C (36.0 F)0.5 C (0.9 F)96 years38 of 100 (Notable)
1 November 2024Dannemora, USmonthly high max23.9 C (75.0 F)0.6 C (1.1 F)85 years45 of 100 (Notable)
31 October 2024Dannemora, USdaily high min15.0 C (59.0 F)4.4 C (7.9 F)50 years33 of 100 (Routine)
31 October 2024Dannemora, USdaily high max23.9 C (75.0 F)1.1 C (2.0 F)68 years31 of 100 (Routine)

Climate Trend

103 complete years, 1906 to 2023
Annual mean temperature at Dannemora as warming stripes, 1906 to 2023 One stripe for each of 103 complete years at Dannemora, 1906 to 2023. Blue stripes are years cooler than the station's own mean of 6.4 C (43.6 F); red stripes are warmer. The coolest year was 1926, at 3.4 C (38.1 F), and the warmest was 2023, at 8.3 C (46.9 F). The strongest colour marks a difference of 3.1 C (5.6 F). 1906: 6.0 C, -0.4 C from the station mean1907: 4.9 C, -1.6 C from the station mean1908: 6.4 C, -0.1 C from the station mean1909: 5.6 C, -0.8 C from the station mean1910: 5.9 C, -0.5 C from the station mean1911: 6.6 C, +0.1 C from the station mean1912: 5.5 C, -0.9 C from the station mean1913: 7.5 C, +1.1 C from the station mean1914: 4.9 C, -1.5 C from the station mean1915: 6.2 C, -0.2 C from the station mean1916: 5.5 C, -0.9 C from the station mean1917: 3.5 C, -2.9 C from the station mean1919: 5.7 C, -0.7 C from the station mean1920: 5.4 C, -1.0 C from the station mean1922: 6.5 C, +0.1 C from the station mean1923: 5.3 C, -1.2 C from the station mean1924: 4.9 C, -1.5 C from the station mean1925: 5.3 C, -1.1 C from the station mean1926: 3.4 C, -3.0 C from the station mean1928: 5.5 C, -0.9 C from the station mean1929: 5.6 C, -0.8 C from the station mean1930: 6.5 C, 0.0 C from the station mean1931: 7.2 C, +0.8 C from the station mean1932: 6.4 C, 0.0 C from the station mean1933: 6.2 C, -0.2 C from the station mean1935: 5.6 C, -0.8 C from the station mean1936: 5.8 C, -0.6 C from the station mean1937: 6.9 C, +0.5 C from the station mean1938: 6.9 C, +0.5 C from the station mean1939: 5.8 C, -0.6 C from the station mean1940: 5.2 C, -1.2 C from the station mean1941: 6.8 C, +0.4 C from the station mean1942: 6.5 C, +0.1 C from the station mean1943: 5.4 C, -1.0 C from the station mean1944: 6.5 C, +0.1 C from the station mean1947: 6.7 C, +0.3 C from the station mean1948: 7.0 C, +0.6 C from the station mean1949: 8.1 C, +1.7 C from the station mean1950: 6.8 C, +0.3 C from the station mean1951: 7.0 C, +0.6 C from the station mean1954: 6.5 C, +0.1 C from the station mean1955: 7.2 C, +0.8 C from the station mean1956: 6.3 C, -0.1 C from the station mean1957: 7.3 C, +0.9 C from the station mean1958: 5.9 C, -0.5 C from the station mean1959: 7.0 C, +0.6 C from the station mean1960: 7.0 C, +0.6 C from the station mean1961: 7.1 C, +0.7 C from the station mean1962: 6.5 C, +0.1 C from the station mean1963: 6.4 C, 0.0 C from the station mean1964: 7.1 C, +0.7 C from the station mean1965: 6.0 C, -0.4 C from the station mean1966: 6.7 C, +0.3 C from the station mean1967: 6.3 C, -0.1 C from the station mean1968: 6.3 C, -0.1 C from the station mean1969: 6.6 C, +0.1 C from the station mean1970: 6.3 C, -0.1 C from the station mean1971: 6.4 C, 0.0 C from the station mean1972: 5.5 C, -1.0 C from the station mean1973: 7.5 C, +1.1 C from the station mean1974: 6.1 C, -0.4 C from the station mean1975: 7.0 C, +0.6 C from the station mean1976: 5.8 C, -0.7 C from the station mean1978: 6.0 C, -0.4 C from the station mean1979: 6.7 C, +0.3 C from the station mean1980: 5.8 C, -0.6 C from the station mean1981: 6.8 C, +0.3 C from the station mean1984: 6.8 C, +0.4 C from the station mean1985: 6.3 C, -0.1 C from the station mean1986: 6.4 C, 0.0 C from the station mean1987: 6.6 C, +0.2 C from the station mean1988: 6.3 C, -0.1 C from the station mean1989: 5.7 C, -0.8 C from the station mean1990: 7.5 C, +1.1 C from the station mean1991: 7.3 C, +0.8 C from the station mean1992: 5.8 C, -0.6 C from the station mean1993: 5.8 C, -0.6 C from the station mean1994: 6.2 C, -0.2 C from the station mean1995: 6.6 C, +0.2 C from the station mean1996: 6.2 C, -0.2 C from the station mean1997: 5.8 C, -0.6 C from the station mean1998: 8.0 C, +1.6 C from the station mean1999: 7.7 C, +1.3 C from the station mean2000: 6.2 C, -0.2 C from the station mean2001: 7.4 C, +1.0 C from the station mean2002: 7.2 C, +0.8 C from the station mean2003: 6.1 C, -0.3 C from the station mean2004: 5.9 C, -0.5 C from the station mean2005: 7.0 C, +0.6 C from the station mean2006: 7.7 C, +1.3 C from the station mean2007: 6.5 C, +0.1 C from the station mean2008: 6.7 C, +0.3 C from the station mean2009: 6.5 C, +0.1 C from the station mean2010: 7.9 C, +1.5 C from the station mean2011: 7.5 C, +1.1 C from the station mean2012: 8.2 C, +1.8 C from the station mean2013: 6.3 C, -0.1 C from the station mean2014: 5.8 C, -0.6 C from the station mean2015: 6.6 C, +0.2 C from the station mean2018: 7.0 C, +0.5 C from the station mean2021: 8.1 C, +1.6 C from the station mean2022: 7.7 C, +1.2 C from the station mean2023: 8.3 C, +1.9 C from the station mean190619201930194019501960197019801990200020102020
One stripe for each of 103 complete years at Dannemora, 1906 to 2023. Blue stripes are years cooler than the station's own mean of 6.4 C (43.6 F); red stripes are warmer. The coolest year was 1926, at 3.4 C (38.1 F), and the warmest was 2023, at 8.3 C (46.9 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Dannemora as warming stripes, 1906 to 2023
YearAnnual mean temperatureDifference from the station mean
19066.0 C-0.38 C
19074.9 C-1.56 C
19086.4 C-0.07 C
19095.6 C-0.83 C
19105.9 C-0.50 C
19116.6 C+0.13 C
19125.5 C-0.88 C
19137.5 C+1.10 C
19144.9 C-1.52 C
19156.2 C-0.18 C
19165.5 C-0.94 C
19173.5 C-2.94 C
19195.7 C-0.75 C
19205.4 C-1.00 C
19226.5 C+0.06 C
19235.3 C-1.17 C
19244.9 C-1.51 C
19255.3 C-1.15 C
19263.4 C-3.04 C
19285.5 C-0.90 C
19295.6 C-0.80 C
19306.5 C+0.03 C
19317.2 C+0.82 C
19326.4 C-0.02 C
19336.2 C-0.25 C
19355.6 C-0.80 C
19365.8 C-0.59 C
19376.9 C+0.48 C
19386.9 C+0.46 C
19395.8 C-0.58 C
19405.2 C-1.18 C
19416.8 C+0.41 C
19426.5 C+0.09 C
19435.4 C-0.99 C
19446.5 C+0.10 C
19476.7 C+0.27 C
19487.0 C+0.55 C
19498.1 C+1.70 C
19506.8 C+0.34 C
19517.0 C+0.55 C
19546.5 C+0.10 C
19557.2 C+0.77 C
19566.3 C-0.09 C
19577.3 C+0.89 C
19585.9 C-0.49 C
19597.0 C+0.55 C
19607.0 C+0.60 C
19617.1 C+0.70 C
19626.5 C+0.05 C
19636.4 C-0.02 C
19647.1 C+0.65 C
19656.0 C-0.43 C
19666.7 C+0.26 C
19676.3 C-0.13 C
19686.3 C-0.13 C
19696.6 C+0.13 C
19706.3 C-0.13 C
19716.4 C-0.03 C
19725.5 C-0.97 C
19737.5 C+1.09 C
19746.1 C-0.36 C
19757.0 C+0.61 C
19765.8 C-0.67 C
19786.0 C-0.43 C
19796.7 C+0.28 C
19805.8 C-0.58 C
19816.8 C+0.34 C
19846.8 C+0.40 C
19856.3 C-0.11 C
19866.4 C+0.01 C
19876.6 C+0.20 C
19886.3 C-0.08 C
19895.7 C-0.77 C
19907.5 C+1.07 C
19917.3 C+0.83 C
19925.8 C-0.58 C
19935.8 C-0.58 C
19946.2 C-0.20 C
19956.6 C+0.21 C
19966.2 C-0.23 C
19975.8 C-0.61 C
19988.0 C+1.58 C
19997.7 C+1.26 C
20006.2 C-0.19 C
20017.4 C+0.97 C
20027.2 C+0.77 C
20036.1 C-0.31 C
20045.9 C-0.49 C
20057.0 C+0.61 C
20067.7 C+1.31 C
20076.5 C+0.07 C
20086.7 C+0.29 C
20096.5 C+0.06 C
20107.9 C+1.52 C
20117.5 C+1.10 C
20128.2 C+1.80 C
20136.3 C-0.11 C
20145.8 C-0.59 C
20156.6 C+0.16 C
20187.0 C+0.54 C
20218.1 C+1.63 C
20227.7 C+1.23 C
20238.3 C+1.85 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1906 to 2023. In Fahrenheit: 0.2 F (0.2 to 0.3) per decade. The slope is a straight line fitted to 103 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Dannemora
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.2 F (0.2 to 0.3) per decade1906 to 2023103Rise
Mean daily maximum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1906 to 2023103Rise
Mean daily minimum0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1906 to 2023103Rise

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

1906 to 2026
Yearly extremes at Dannemora: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)36.7 C (98.1 F)194432.8 C (91.0 F)121
Coldest night (TNn)-39.4 C (-38.9 F)2023-28.3 C (-18.9 F)121
Wettest day (Rx1day)115.6 mm (4.6 in)199945.7 mm (1.8 in)121
Wettest five days (Rx5day)179.0 mm (7.0 in)201371.0 mm (2.8 in)121
Longest dry spell (CDD)33 days191315 days121

Hottest day (TXx)

Hottest day (TXx) at Dannemora by year The hottest day of the year at Dannemora, 1906 to 2026. The record is 36.7 C (98.1 F) in 1944, marked on the chart; the median year is 32.8 C (91.0 F). 10203040192019401960198020002020Record: 36.7 C (98.1 F) in 1944
The hottest day of the year at Dannemora, 1906 to 2026. The record is 36.7 C (98.1 F) in 1944, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Dannemora by year
YearHottest day (TXx)
190631.1 C (88.0 F)
190733.3 C (91.9 F)
190832.2 C (90.0 F)
190932.2 C (90.0 F)
191032.2 C (90.0 F)
191135.6 C (96.1 F)
191235.0 C (95.0 F)
191334.4 C (93.9 F)
191433.9 C (93.0 F)
191532.2 C (90.0 F)
191634.4 C (93.9 F)
191733.3 C (91.9 F)
191833.9 C (93.0 F)
191933.3 C (91.9 F)
192034.4 C (93.9 F)
192135.0 C (95.0 F)
192232.2 C (90.0 F)
192332.2 C (90.0 F)
192431.7 C (89.1 F)
192532.8 C (91.0 F)
192628.9 C (84.0 F)
192727.8 C (82.0 F)
192831.1 C (88.0 F)
192931.7 C (89.1 F)
193030.6 C (87.1 F)
193135.6 C (96.1 F)
193232.2 C (90.0 F)
193333.9 C (93.0 F)
193431.1 C (88.0 F)
193531.1 C (88.0 F)
193630.0 C (86.0 F)
193731.7 C (89.1 F)
193832.8 C (91.0 F)
193933.9 C (93.0 F)
194030.6 C (87.1 F)
194133.9 C (93.0 F)
194233.3 C (91.9 F)
194332.2 C (90.0 F)
194436.7 C (98.1 F)
194532.2 C (90.0 F)
194615.6 C (60.1 F)
194736.1 C (97.0 F)
194835.6 C (96.1 F)
194935.6 C (96.1 F)
195032.8 C (91.0 F)
195131.1 C (88.0 F)
195235.0 C (95.0 F)
195335.0 C (95.0 F)
195431.7 C (89.1 F)
195535.6 C (96.1 F)
195633.9 C (93.0 F)
195733.3 C (91.9 F)
195831.1 C (88.0 F)
195933.3 C (91.9 F)
196033.3 C (91.9 F)
196135.0 C (95.0 F)
196232.2 C (90.0 F)
196333.3 C (91.9 F)
196432.8 C (91.0 F)
196532.8 C (91.0 F)
196635.6 C (96.1 F)
196731.1 C (88.0 F)
196832.2 C (90.0 F)
196932.2 C (90.0 F)
197031.1 C (88.0 F)
197132.2 C (90.0 F)
197231.1 C (88.0 F)
197332.8 C (91.0 F)
197431.7 C (89.1 F)
197536.1 C (97.0 F)
197633.3 C (91.9 F)
197735.0 C (95.0 F)
197836.7 C (98.1 F)
197934.4 C (93.9 F)
198032.2 C (90.0 F)
198135.0 C (95.0 F)
198235.6 C (96.1 F)
198334.4 C (93.9 F)
198431.7 C (89.1 F)
198530.6 C (87.1 F)
198631.1 C (88.0 F)
198732.2 C (90.0 F)
198833.3 C (91.9 F)
198931.7 C (89.1 F)
199030.0 C (86.0 F)
199132.8 C (91.0 F)
199230.6 C (87.1 F)
199331.7 C (89.1 F)
199433.3 C (91.9 F)
199533.9 C (93.0 F)
199629.4 C (84.9 F)
199729.4 C (84.9 F)
199831.1 C (88.0 F)
199932.8 C (91.0 F)
200028.9 C (84.0 F)
200133.9 C (93.0 F)
200233.9 C (93.0 F)
200332.8 C (91.0 F)
200430.0 C (86.0 F)
200531.7 C (89.1 F)
200633.3 C (91.9 F)
200732.2 C (90.0 F)
200831.7 C (89.1 F)
200930.6 C (87.1 F)
201032.8 C (91.0 F)
201133.9 C (93.0 F)
201231.7 C (89.1 F)
201331.1 C (88.0 F)
201430.6 C (87.1 F)
201530.6 C (87.1 F)
201632.8 C (91.0 F)
201731.1 C (88.0 F)
201833.9 C (93.0 F)
201932.8 C (91.0 F)
202033.3 C (91.9 F)
202131.1 C (88.0 F)
202231.7 C (89.1 F)
202332.2 C (90.0 F)
202432.8 C (91.0 F)
202532.2 C (90.0 F)
202632.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Dannemora by year The coldest night of the year at Dannemora, 1906 to 2026. The record is -39.4 C (-38.9 F) in 2023, marked on the chart; the median year is -28.3 C (-18.9 F). -40-35-30-25-20-15192019401960198020002020Record: -39.4 C (-38.9 F) in 2023
The coldest night of the year at Dannemora, 1906 to 2026. The record is -39.4 C (-38.9 F) in 2023, marked on the chart; the median year is -28.3 C (-18.9 F).
Coldest night (TNn) at Dannemora by year
YearColdest night (TNn)
1906-30.6 C (-23.1 F)
1907-30.6 C (-23.1 F)
1908-30.0 C (-22.0 F)
1909-26.7 C (-16.1 F)
1910-28.9 C (-20.0 F)
1911-26.1 C (-15.0 F)
1912-30.6 C (-23.1 F)
1913-25.6 C (-14.1 F)
1914-38.3 C (-36.9 F)
1915-27.8 C (-18.0 F)
1916-29.4 C (-20.9 F)
1917-33.3 C (-27.9 F)
1918-34.4 C (-29.9 F)
1919-30.6 C (-23.1 F)
1920-34.4 C (-29.9 F)
1921-28.3 C (-18.9 F)
1922-32.2 C (-26.0 F)
1923-31.7 C (-25.1 F)
1924-32.8 C (-27.0 F)
1925-28.9 C (-20.0 F)
1926-30.6 C (-23.1 F)
1927-28.9 C (-20.0 F)
1928-27.2 C (-17.0 F)
1929-28.3 C (-18.9 F)
1930-28.9 C (-20.0 F)
1931-25.6 C (-14.1 F)
1932-26.1 C (-15.0 F)
1933-37.8 C (-36.0 F)
1934-34.4 C (-29.9 F)
1935-28.9 C (-20.0 F)
1936-26.1 C (-15.0 F)
1937-21.7 C (-7.1 F)
1938-27.8 C (-18.0 F)
1939-27.8 C (-18.0 F)
1940-28.9 C (-20.0 F)
1941-26.7 C (-16.1 F)
1942-34.4 C (-29.9 F)
1943-37.2 C (-35.0 F)
1944-25.6 C (-14.1 F)
1945-30.0 C (-22.0 F)
1946-23.9 C (-11.0 F)
1947-25.6 C (-14.1 F)
1948-28.3 C (-18.9 F)
1949-19.4 C (-2.9 F)
1950-29.4 C (-20.9 F)
1951-28.9 C (-20.0 F)
1952-26.1 C (-15.0 F)
1953-25.0 C (-13.0 F)
1954-28.9 C (-20.0 F)
1955-30.6 C (-23.1 F)
1956-25.0 C (-13.0 F)
1957-35.0 C (-31.0 F)
1958-26.7 C (-16.1 F)
1959-27.8 C (-18.0 F)
1960-27.2 C (-17.0 F)
1961-26.7 C (-16.1 F)
1962-29.4 C (-20.9 F)
1963-30.0 C (-22.0 F)
1964-25.6 C (-14.1 F)
1965-31.7 C (-25.1 F)
1966-27.8 C (-18.0 F)
1967-30.6 C (-23.1 F)
1968-32.2 C (-26.0 F)
1969-22.2 C (-8.0 F)
1970-26.1 C (-15.0 F)
1971-27.2 C (-17.0 F)
1972-28.9 C (-20.0 F)
1973-27.8 C (-18.0 F)
1974-27.2 C (-17.0 F)
1975-27.8 C (-18.0 F)
1976-30.0 C (-22.0 F)
1977-27.8 C (-18.0 F)
1978-25.0 C (-13.0 F)
1979-31.7 C (-25.1 F)
1980-33.3 C (-27.9 F)
1981-36.7 C (-34.1 F)
1982-28.9 C (-20.0 F)
1983-26.7 C (-16.1 F)
1984-27.2 C (-17.0 F)
1985-26.7 C (-16.1 F)
1986-25.6 C (-14.1 F)
1987-29.4 C (-20.9 F)
1988-31.1 C (-24.0 F)
1989-30.0 C (-22.0 F)
1990-25.0 C (-13.0 F)
1991-25.6 C (-14.1 F)
1992-26.7 C (-16.1 F)
1993-31.7 C (-25.1 F)
1994-32.8 C (-27.0 F)
1995-29.4 C (-20.9 F)
1996-25.6 C (-14.1 F)
1997-28.3 C (-18.9 F)
1998-26.7 C (-16.1 F)
1999-31.1 C (-24.0 F)
2000-26.7 C (-16.1 F)
2001-22.2 C (-8.0 F)
2002-24.4 C (-11.9 F)
2003-28.9 C (-20.0 F)
2004-30.6 C (-23.1 F)
2005-28.9 C (-20.0 F)
2006-20.6 C (-5.1 F)
2007-27.2 C (-17.0 F)
2008-23.9 C (-11.0 F)
2009-26.7 C (-16.1 F)
2010-26.1 C (-15.0 F)
2011-28.3 C (-18.9 F)
2012-23.3 C (-9.9 F)
2013-27.2 C (-17.0 F)
2014-27.2 C (-17.0 F)
2015-30.6 C (-23.1 F)
2016-31.1 C (-24.0 F)
2017-26.1 C (-15.0 F)
2018-27.8 C (-18.0 F)
2019-31.1 C (-24.0 F)
2020-26.7 C (-16.1 F)
2021-26.1 C (-15.0 F)
2022-32.2 C (-26.0 F)
2023-39.4 C (-38.9 F)
2024-23.9 C (-11.0 F)
2025-25.6 C (-14.1 F)
2026-33.9 C (-29.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Dannemora by year The wettest day of the year at Dannemora, 1906 to 2026. The record is 115.6 mm (4.6 in) in 1999, marked on the chart; the median year is 45.7 mm (1.8 in). 255075100125192019401960198020002020Record: 115.6 mm (4.6 in) in 1999
The wettest day of the year at Dannemora, 1906 to 2026. The record is 115.6 mm (4.6 in) in 1999, marked on the chart; the median year is 45.7 mm (1.8 in).
Wettest day (Rx1day) at Dannemora by year
YearWettest day (Rx1day)
190639.4 mm (1.6 in)
190757.2 mm (2.3 in)
190827.9 mm (1.1 in)
190931.8 mm (1.3 in)
191036.8 mm (1.4 in)
191144.7 mm (1.8 in)
191243.7 mm (1.7 in)
191352.1 mm (2.1 in)
191462.7 mm (2.5 in)
191536.6 mm (1.4 in)
191643.2 mm (1.7 in)
191761.7 mm (2.4 in)
191843.2 mm (1.7 in)
191939.4 mm (1.6 in)
1920100.3 mm (3.9 in)
192147.0 mm (1.9 in)
192245.7 mm (1.8 in)
192350.8 mm (2.0 in)
192472.1 mm (2.8 in)
192538.4 mm (1.5 in)
192664.0 mm (2.5 in)
192731.8 mm (1.3 in)
192828.4 mm (1.1 in)
192927.9 mm (1.1 in)
193040.1 mm (1.6 in)
193153.3 mm (2.1 in)
193271.1 mm (2.8 in)
193349.5 mm (1.9 in)
193445.7 mm (1.8 in)
193550.8 mm (2.0 in)
193631.8 mm (1.3 in)
193747.0 mm (1.9 in)
193848.3 mm (1.9 in)
193925.4 mm (1.0 in)
194052.1 mm (2.1 in)
194130.5 mm (1.2 in)
194238.1 mm (1.5 in)
194347.2 mm (1.9 in)
194466.8 mm (2.6 in)
194534.0 mm (1.3 in)
194634.3 mm (1.4 in)
194746.2 mm (1.8 in)
194845.7 mm (1.8 in)
194952.1 mm (2.1 in)
195054.6 mm (2.1 in)
195141.9 mm (1.6 in)
195241.9 mm (1.6 in)
195348.0 mm (1.9 in)
195458.9 mm (2.3 in)
195529.2 mm (1.1 in)
195656.4 mm (2.2 in)
195751.6 mm (2.0 in)
195855.6 mm (2.2 in)
195930.7 mm (1.2 in)
196050.8 mm (2.0 in)
196134.0 mm (1.3 in)
196253.3 mm (2.1 in)
196325.9 mm (1.0 in)
196431.8 mm (1.3 in)
196542.2 mm (1.7 in)
196626.2 mm (1.0 in)
196731.0 mm (1.2 in)
196840.6 mm (1.6 in)
196940.1 mm (1.6 in)
197086.4 mm (3.4 in)
197139.6 mm (1.6 in)
197243.7 mm (1.7 in)
197341.1 mm (1.6 in)
197430.2 mm (1.2 in)
197535.1 mm (1.4 in)
197638.1 mm (1.5 in)
197771.1 mm (2.8 in)
197837.1 mm (1.5 in)
197952.3 mm (2.1 in)
198039.6 mm (1.6 in)
198137.6 mm (1.5 in)
198238.1 mm (1.5 in)
198361.2 mm (2.4 in)
198441.1 mm (1.6 in)
198525.9 mm (1.0 in)
198633.0 mm (1.3 in)
198745.2 mm (1.8 in)
198876.2 mm (3.0 in)
198955.9 mm (2.2 in)
199035.1 mm (1.4 in)
199130.7 mm (1.2 in)
199249.3 mm (1.9 in)
199345.7 mm (1.8 in)
199449.3 mm (1.9 in)
199578.5 mm (3.1 in)
199692.5 mm (3.6 in)
199753.3 mm (2.1 in)
199870.9 mm (2.8 in)
1999115.6 mm (4.6 in)
200058.4 mm (2.3 in)
200137.6 mm (1.5 in)
200249.5 mm (1.9 in)
200350.8 mm (2.0 in)
200445.7 mm (1.8 in)
200571.1 mm (2.8 in)
200632.5 mm (1.3 in)
200776.5 mm (3.0 in)
200833.0 mm (1.3 in)
200927.7 mm (1.1 in)
201070.4 mm (2.8 in)
201183.8 mm (3.3 in)
201261.0 mm (2.4 in)
201377.5 mm (3.1 in)
201440.6 mm (1.6 in)
201547.2 mm (1.9 in)
201663.5 mm (2.5 in)
201754.6 mm (2.1 in)
201853.3 mm (2.1 in)
201950.8 mm (2.0 in)
202039.9 mm (1.6 in)
202152.1 mm (2.1 in)
202241.9 mm (1.6 in)
202351.3 mm (2.0 in)
202445.7 mm (1.8 in)
202536.3 mm (1.4 in)
202639.9 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Dannemora by year The wettest five days of the year at Dannemora, 1906 to 2026. The record is 179.0 mm (7.0 in) in 2013, marked on the chart; the median year is 71.0 mm (2.8 in). 050100150200192019401960198020002020Record: 179.0 mm (7.0 in) in 2013
The wettest five days of the year at Dannemora, 1906 to 2026. The record is 179.0 mm (7.0 in) in 2013, marked on the chart; the median year is 71.0 mm (2.8 in).
Wettest five days (Rx5day) at Dannemora by year
YearWettest five days (Rx5day)
190654.6 mm (2.1 in)
1907129.1 mm (5.1 in)
190860.7 mm (2.4 in)
190968.8 mm (2.7 in)
191067.8 mm (2.7 in)
191146.2 mm (1.8 in)
191267.3 mm (2.6 in)
191356.4 mm (2.2 in)
191474.4 mm (2.9 in)
191562.8 mm (2.5 in)
191671.0 mm (2.8 in)
191769.8 mm (2.7 in)
191874.2 mm (2.9 in)
191965.4 mm (2.6 in)
192092.8 mm (3.7 in)
192165.6 mm (2.6 in)
192272.9 mm (2.9 in)
192382.8 mm (3.3 in)
1924130.8 mm (5.1 in)
192585.9 mm (3.4 in)
192670.1 mm (2.8 in)
192768.6 mm (2.7 in)
192862.7 mm (2.5 in)
192951.3 mm (2.0 in)
193061.0 mm (2.4 in)
193181.8 mm (3.2 in)
193299.1 mm (3.9 in)
193372.4 mm (2.9 in)
193461.0 mm (2.4 in)
193580.0 mm (3.1 in)
193646.5 mm (1.8 in)
193764.8 mm (2.6 in)
1938102.6 mm (4.0 in)
193958.2 mm (2.3 in)
194065.5 mm (2.6 in)
194141.9 mm (1.6 in)
194261.4 mm (2.4 in)
194364.5 mm (2.5 in)
1944103.7 mm (4.1 in)
194586.1 mm (3.4 in)
194638.1 mm (1.5 in)
194781.5 mm (3.2 in)
194865.3 mm (2.6 in)
194965.3 mm (2.6 in)
1950108.7 mm (4.3 in)
195150.3 mm (2.0 in)
195250.5 mm (2.0 in)
195353.1 mm (2.1 in)
195487.1 mm (3.4 in)
195545.7 mm (1.8 in)
195668.0 mm (2.7 in)
195775.5 mm (3.0 in)
195888.0 mm (3.5 in)
195960.0 mm (2.4 in)
196068.3 mm (2.7 in)
196152.3 mm (2.1 in)
196272.1 mm (2.8 in)
196356.1 mm (2.2 in)
196460.0 mm (2.4 in)
196575.8 mm (3.0 in)
196639.9 mm (1.6 in)
196761.1 mm (2.4 in)
196850.6 mm (2.0 in)
196967.8 mm (2.7 in)
197098.1 mm (3.9 in)
197155.3 mm (2.2 in)
197267.8 mm (2.7 in)
197382.8 mm (3.3 in)
197454.6 mm (2.1 in)
197570.4 mm (2.8 in)
197663.8 mm (2.5 in)
197797.5 mm (3.8 in)
197850.8 mm (2.0 in)
197968.1 mm (2.7 in)
198091.2 mm (3.6 in)
198180.2 mm (3.2 in)
198261.9 mm (2.4 in)
1983110.0 mm (4.3 in)
198449.0 mm (1.9 in)
198563.2 mm (2.5 in)
198663.5 mm (2.5 in)
1987107.4 mm (4.2 in)
1988101.6 mm (4.0 in)
198965.0 mm (2.6 in)
199076.3 mm (3.0 in)
199152.8 mm (2.1 in)
199259.2 mm (2.3 in)
199376.2 mm (3.0 in)
199474.7 mm (2.9 in)
1995104.6 mm (4.1 in)
1996117.4 mm (4.6 in)
199779.0 mm (3.1 in)
1998113.1 mm (4.5 in)
1999130.8 mm (5.1 in)
200094.5 mm (3.7 in)
200165.5 mm (2.6 in)
2002136.1 mm (5.4 in)
2003104.6 mm (4.1 in)
200478.7 mm (3.1 in)
2005127.0 mm (5.0 in)
200678.5 mm (3.1 in)
200795.1 mm (3.7 in)
200872.9 mm (2.9 in)
200951.2 mm (2.0 in)
201094.2 mm (3.7 in)
201161.4 mm (2.4 in)
201292.5 mm (3.6 in)
2013179.0 mm (7.0 in)
201469.8 mm (2.7 in)
201595.8 mm (3.8 in)
201684.8 mm (3.3 in)
201773.1 mm (2.9 in)
201866.8 mm (2.6 in)
201976.1 mm (3.0 in)
202076.5 mm (3.0 in)
202178.2 mm (3.1 in)
202282.3 mm (3.2 in)
2023148.6 mm (5.9 in)
202472.3 mm (2.8 in)
202579.0 mm (3.1 in)
202675.2 mm (3.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Dannemora by year The longest dry spell of the year at Dannemora, 1906 to 2026. The record is 33 days in 1913, marked on the chart; the median year is 15 days. 010203040192019401960198020002020Record: 33 days in 1913
The longest dry spell of the year at Dannemora, 1906 to 2026. The record is 33 days in 1913, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Dannemora by year
YearLongest dry spell (CDD)
190615 days
190723 days
190821 days
190921 days
191017 days
191113 days
191214 days
191333 days
191416 days
191512 days
191611 days
191715 days
191816 days
191912 days
192012 days
192114 days
192220 days
192314 days
192425 days
192517 days
192610 days
192714 days
192811 days
192913 days
193019 days
193115 days
193214 days
193314 days
193414 days
193519 days
193614 days
193712 days
193813 days
193918 days
194012 days
194124 days
194215 days
194315 days
194416 days
194516 days
19466 days
194726 days
194820 days
194920 days
195015 days
195114 days
195221 days
195319 days
195410 days
195517 days
195618 days
195722 days
195812 days
195919 days
196012 days
196131 days
196212 days
196320 days
196417 days
196527 days
196613 days
196721 days
196819 days
196918 days
197017 days
197112 days
197212 days
197317 days
197412 days
197516 days
197620 days
197712 days
197817 days
197918 days
198030 days
198130 days
198220 days
198314 days
198416 days
198514 days
198611 days
198718 days
198819 days
198922 days
199017 days
199117 days
199213 days
199311 days
199414 days
199516 days
199612 days
199716 days
199814 days
199918 days
200012 days
200119 days
200213 days
200316 days
200411 days
200515 days
200613 days
200712 days
200812 days
200914 days
201015 days
201115 days
201223 days
201327 days
201418 days
201512 days
20169 days
201710 days
201815 days
201910 days
202014 days
202113 days
202211 days
202317 days
202415 days
202513 days
202611 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

103 years with a frost

Across 103 years with a frost, the median last spring frost at Dannemora falls on 11 May and the median first autumn frost on 4 October, which leaves a median of 147 days between them.

In 1990 to 2023 the median growing season was 160 days. That is 21 days more than in 1906 to 1939.

Fitted over all years, the growing season changes by +2.2 days per decade at this station.

Frost dates and growing season at Dannemora
MeasureMedian, all yearsEarliest period (1906 to 1939)Recent period (1990 to 2023)Recent against earliestFitted trend
Last spring frost11 May17 May7 May10 days earlier-0.9 days per decade
First autumn frost4 October29 September12 October13 days later+1.4 days per decade
Growing days147 days139 days160 days21 days more+2.2 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

109 years, 1906 to 2025

A day with at least 45.1 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 102.4 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Dannemora: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years45.1 mm (1.8 in)
5 years59.0 mm (2.3 in)
10 years68.8 mm (2.7 in)
25 years81.8 mm (3.2 in)
50 years91.9 mm (3.6 in)
100 years102.4 mm (4.0 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 109 years of values from 1906 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: 115.6 mm (4.6 in) in 1999; 100.3 mm (3.9 in) in 1920; 92.5 mm (3.6 in) in 1996.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Dannemora, at 2010. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2010 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Dannemora, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
2010-0.2-0.4likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2005 to 2023 against 1961 to 1990

Over 2005 to 2023, Dannemora had a mean temperature of 7.2 C (44.9 F) and 1,169.4 mm (46.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Gloversville (United States, 193 km away), Grafton (United States, 216 km away) and Glens Falls Farm (United States, 155 km away).

Climate twins of Dannemora: stations whose 1961 to 1990 climate is closest to its 2005 to 2023 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
GloversvilleUnited States193 km (120 mi)7.5 C (45.5 F)1,060.0 mm (41.7 in)0.76
GraftonUnited States216 km (134 mi)7.1 C (44.8 F)1,145.1 mm (45.1 in)0.76
Glens Falls FarmUnited States155 km (96 mi)7.6 C (45.7 F)1,119.9 mm (44.1 in)0.78

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 Dannemora standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Dannemora 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 (2026-10-12).