Built 2026-10-14 (14 October 2026)

Tanana AP Weather Records (USW00026529)

Record envelope, standing records and threshold days for Tanana AP (USW00026529), Alaska, United States, with 126 years of record.

Key Facts for Tanana AP

  • Tanana AP (USW00026529) is a weather station in Alaska, United States at 65.17 latitude and -152.11 longitude, 69 m (225 ft) above sea level.
  • The station reports from 1901 to 2026, 126 years of record.
  • 1,464 records set at Tanana AP still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Tanana AP tied a daily record high minimum temperature of 8.9 C (48.0 F) on 11 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Alaska, United States, 65.17 latitude, -152.11 longitude.
  • Elevation: 69 m (225 ft).
  • Period of record: 1901 to 2026, 126 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Tanana AP, with 2026 drawn through them The band shows the record high and record low for each calendar day at Tanana AP. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Tanana AP. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Tanana AP, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan6.1 C (43.0 F)-60.0 C (-76.0 F)n/an/a
Feb7.2 C (45.0 F)-55.6 C (-68.1 F)n/an/a
Mar15.6 C (60.1 F)-49.4 C (-56.9 F)n/an/a
Apr21.1 C (70.0 F)-40.0 C (-40.0 F)n/an/a
May31.7 C (89.1 F)-25.6 C (-14.1 F)n/an/a
Jun34.4 C (93.9 F)-5.0 C (23.0 F)n/an/a
Jul33.3 C (91.9 F)-1.7 C (28.9 F)n/an/a
Aug32.2 C (90.0 F)-6.7 C (19.9 F)n/an/a
Sep25.6 C (78.1 F)-15.6 C (3.9 F)16.7 C (62.1 F)-6.1 C (21.0 F)
Oct18.9 C (66.0 F)-32.8 C (-27.0 F)2.8 C (37.0 F)-11.7 C (10.9 F)
Nov7.2 C (45.0 F)-47.2 C (-53.0 F)n/an/a
Dec7.8 C (46.0 F)-53.3 C (-63.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Tanana AP by the year they were set 1,464 records at Tanana AP still stand. 1920 holds the most, with 32. 0102030401901: 11902: 51903: 281904: 181905: 241906: 211907: 221917: 131918: 291919: 241920: 321921: 141922: 111923: 201924: 231925: 61926: 141927: 141928: 91929: 231930: 101931: 211932: 151933: 211934: 261935: 251936: 111937: 231938: 201939: 161940: 181941: 81942: 31943: 121944: 111945: 131946: 151947: 141948: 211949: 131950: 41951: 51952: 251953: 121954: 61955: 71956: 191957: 221958: 151959: 81960: 151961: 161962: 21963: 91964: 231965: 201966: 91967: 61968: 71969: 251970: 171971: 191972: 21973: 41974: 161975: 21976: 41977: 61978: 51979: 111980: 71981: 111982: 81983: 91984: 41985: 121986: 81987: 51988: 81989: 211990: 101991: 161992: 211993: 171994: 201995: 251996: 101997: 121998: 141999: 112000: 52002: 142003: 172004: 82005: 52006: 62007: 112008: 92009: 112010: 132011: 32012: 22013: 222014: 72015: 42016: 122017: 82018: 52019: 142020: 42021: 102022: 22023: 22024: 12025: 121901192219341946195819701982199420072019
1,464 records at Tanana AP still stand. 1920 holds the most, with 32.
Standing records at Tanana AP by the year they were set
Year setStanding records
19011
19025
190328
190418
190524
190621
190722
191713
191829
191924
192032
192114
192211
192320
192423
19256
192614
192714
19289
192923
193010
193121
193215
193321
193426
193525
193611
193723
193820
193916
194018
19418
19423
194312
194411
194513
194615
194714
194821
194913
19504
19515
195225
195312
19546
19557
195619
195722
195815
19598
196015
196116
19622
19639
196423
196520
19669
19676
19687
196925
197017
197119
19722
19734
197416
19752
19764
19776
19785
197911
19807
198111
19828
19839
19844
198512
19868
19875
19888
198921
199010
199116
199221
199317
199420
199525
199610
199712
199814
199911
20005
200214
200317
20048
20055
20066
200711
20089
200911
201013
20113
20122
201322
20147
20154
201612
20178
20185
201914
20204
202110
20222
20232
20241
202512

All-Time Record Progression

6 new records
When Tanana AP set new all-time records 6 all-time records were set at Tanana AP between 12 July 1946 and 27 January 1989. Each dot is a new record. Record high maximum temperatureRecord daily snowfallRecord high minimum temperatureRecord low minimum temperature12 July 1946: Record high maximum temperature 33.3 C (91.9 F)6 March 1955: Record daily snowfall 63.5 cm (25.0 in)20 June 1958: Record high minimum temperature 18.9 C (66.0 F)15 June 1969: Record high maximum temperature 34.4 C (93.9 F)22 June 1987: Record high minimum temperature 21.7 C (71.1 F)27 January 1989: Record low minimum temperature -60.0 C (-76.0 F)19501960197019801990
6 all-time records were set at Tanana AP between 12 July 1946 and 27 January 1989. Each dot is a new record.
When Tanana AP set new all-time records
DateKindDetail
1946-07-12Record high maximum temperatureRecord high maximum temperature 33.3 C (91.9 F)
1955-03-06Record daily snowfallRecord daily snowfall 63.5 cm (25.0 in)
1958-06-20Record high minimum temperatureRecord high minimum temperature 18.9 C (66.0 F)
1969-06-15Record high maximum temperatureRecord high maximum temperature 34.4 C (93.9 F)
1987-06-22Record high minimum temperatureRecord high minimum temperature 21.7 C (71.1 F)
1989-01-27Record low minimum temperatureRecord low minimum temperature -60.0 C (-76.0 F)

Wettest Day of Each Month

Jun: 73.7 mm (2.9 in)
Record daily precipitation for each month at Tanana AP The wettest day on record for each calendar month at Tanana AP. The most was 73.7 mm (2.9 in) on 13 June 1932. 020406080 Jan: 59.7 mm (2.4 in), 31 January 1937 Jan Feb: 21.6 mm (0.9 in), 13 February 1932 Feb Mar: 23.4 mm (0.9 in), 6 March 1921 Mar Apr: 26.9 mm (1.1 in), 20 April 1950 Apr May: 27.4 mm (1.1 in), 18 May 1955 May Jun: 73.7 mm (2.9 in), 13 June 1932 Jun Jul: 42.2 mm (1.7 in), 7 July 1998 Jul Aug: 49.8 mm (2.0 in), 12 August 1967 Aug Sep: 41.9 mm (1.6 in), 21 September 1942 Sep Oct: 24.6 mm (1.0 in), 6 October 1963 Oct Nov: 28.4 mm (1.1 in), 4 November 1935 Nov Dec: 25.4 mm (1.0 in), 11 December 1940 Dec
The wettest day on record for each calendar month at Tanana AP. The most was 73.7 mm (2.9 in) on 13 June 1932.
Record daily precipitation for each month at Tanana AP
MonthRecord daily precipitation (mm)Date
Jan59.7 mm (2.4 in)31 January 1937
Feb21.6 mm (0.9 in)13 February 1932
Mar23.4 mm (0.9 in)6 March 1921
Apr26.9 mm (1.1 in)20 April 1950
May27.4 mm (1.1 in)18 May 1955
Jun73.7 mm (2.9 in)13 June 1932
Jul42.2 mm (1.7 in)7 July 1998
Aug49.8 mm (2.0 in)12 August 1967
Sep41.9 mm (1.6 in)21 September 1942
Oct24.6 mm (1.0 in)6 October 1963
Nov28.4 mm (1.1 in)4 November 1935
Dec25.4 mm (1.0 in)11 December 1940

Period of Record Coverage

1902 to 2026
Days with data per year at Tanana AP 116 years of record at Tanana AP, 1902 to 2026. 19 years have data for under 90 percent of days and are left out of rankings: 1902, 1903, 1904, 1905, 1906, 1907, 1917, 1937 and others. 1902: 79 of 365 days1903: 308 of 365 days1904: 214 of 366 days1905: 302 of 365 days1906: 227 of 365 days1907: 218 of 365 days1917: 241 of 365 days1918: 361 of 365 days1919: 361 of 365 days1920: 366 of 366 days1921: 362 of 365 days1922: 363 of 365 days1923: 364 of 365 days1924: 330 of 366 days1925: 365 of 365 days1926: 365 of 365 days1927: 364 of 365 days1928: 363 of 366 days1929: 362 of 365 days1930: 364 of 365 days1931: 364 of 365 days1932: 364 of 366 days1933: 337 of 365 days1934: 354 of 365 days1935: 363 of 365 days1936: 364 of 366 days1937: 324 of 365 days1938: 350 of 365 days1939: 364 of 365 days1940: 362 of 366 days1941: 362 of 365 days1942: 348 of 365 days1943: 223 of 365 days1944: 245 of 366 days1945: 365 of 365 days1946: 365 of 365 days1947: 364 of 365 days1948: 364 of 366 days1949: 263 of 365 days1950: 306 of 365 days1951: 364 of 365 days1952: 365 of 366 days1953: 364 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 364 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 365 of 366 days1969: 365 of 365 days1970: 363 of 365 days1971: 364 of 365 days1972: 91 of 366 days1973: 211 of 365 days1974: 273 of 365 days1975: 241 of 365 days1976: 366 of 366 days1977: 334 of 365 days1978: 365 of 365 days1979: 334 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 364 of 365 days1984: 365 of 366 days1985: 362 of 365 days1986: 354 of 365 days1987: 365 of 365 days1988: 364 of 366 days1989: 364 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 345 of 365 days1996: 365 of 366 days1997: 363 of 365 days1998: 365 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 364 of 365 days2002: 360 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 364 of 365 days2006: 364 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 364 of 365 days2010: 362 of 365 days2011: 365 of 365 days2012: 364 of 366 days2013: 361 of 365 days2014: 365 of 365 days2015: 362 of 365 days2016: 365 of 366 days2017: 359 of 365 days2018: 365 of 365 days2019: 363 of 365 days2020: 363 of 366 days2021: 355 of 365 days2022: 350 of 365 days2023: 339 of 365 days2024: 317 of 366 days2025: 280 of 365 days2026: 35 of 365 days190519201935195019651980199520102025
116 years of record at Tanana AP, 1902 to 2026. 19 years have data for under 90 percent of days and are left out of rankings: 1902, 1903, 1904, 1905, 1906, 1907, 1917, 1937 and others.
Days with data per year at Tanana AP
YearDays with dataShare of yearComplete
19027922%No
190330884%No
190421458%No
190530283%No
190622762%No
190721860%No
191724166%No
191836199%Yes
191936199%Yes
1920366100%Yes
192136299%Yes
192236399%Yes
1923364100%Yes
192433090%Yes
1925365100%Yes
1926365100%Yes
1927364100%Yes
192836399%Yes
192936299%Yes
1930364100%Yes
1931364100%Yes
193236499%Yes
193333792%Yes
193435497%Yes
193536399%Yes
193636499%Yes
193732489%No
193835096%Yes
1939364100%Yes
194036299%Yes
194136299%Yes
194234895%Yes
194322361%No
194424567%No
1945365100%Yes
1946365100%Yes
1947364100%Yes
194836499%Yes
194926372%No
195030684%No
1951364100%Yes
1952365100%Yes
1953364100%Yes
1954365100%Yes
1955365100%Yes
1956365100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962364100%Yes
1963365100%Yes
196436499%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968365100%Yes
1969365100%Yes
197036399%Yes
1971364100%Yes
19729125%No
197321158%No
197427375%No
197524166%No
1976366100%Yes
197733492%Yes
1978365100%Yes
197933492%Yes
1980366100%Yes
1981365100%Yes
1982364100%Yes
1983364100%Yes
1984365100%Yes
198536299%Yes
198635497%Yes
1987365100%Yes
198836499%Yes
1989364100%Yes
1990364100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
199534595%Yes
1996365100%Yes
199736399%Yes
1998365100%Yes
1999364100%Yes
2000366100%Yes
2001364100%Yes
200236099%Yes
2003365100%Yes
2004366100%Yes
2005364100%Yes
2006364100%Yes
2007365100%Yes
2008366100%Yes
2009364100%Yes
201036299%Yes
2011365100%Yes
201236499%Yes
201336199%Yes
2014365100%Yes
201536299%Yes
2016365100%Yes
201735998%Yes
2018365100%Yes
201936399%Yes
202036399%Yes
202135597%Yes
202235096%Yes
202333993%Yes
202431787%No
202528077%No
20263510%No

Latest Records

20
Latest records at Tanana AP
DateStationRecordValueBeat old record byOld record stoodSignificance
11 September 2026Tanana AP, USdaily high min (Tie, Provisional)8.9 C (48.0 F)tie88 years9 of 100 (Routine)
23 April 2026Tanana AP, USdaily snowfall5.1 cm (2.0 in)3.1 cm (1.2 in)68 years43 of 100 (Notable)
21 April 2026Tanana AP, USdaily snowfall7.6 cm (3.0 in)3.8 cm (1.5 in)88 years52 of 100 (Notable)
20 April 2026Tanana AP, USdaily snowfall10.2 cm (4.0 in)7.9 cm (3.1 in)101 years75 of 100 (Major)
24 February 2026Tanana AP, USdaily snowfall12.7 cm (5.0 in)1.5 cm (0.6 in)28 years21 of 100 (Routine)
8 November 2025Tanana AP, USdaily snowfall8.9 cm (3.5 in)2.5 cm (1.0 in)88 years44 of 100 (Notable)
1 November 2025Tanana AP, USdaily snowfall9.1 cm (3.6 in)2.5 cm (1.0 in)30 years27 of 100 (Routine)
16 October 2025Tanana AP, USdaily high max (Tie)9.4 C (48.9 F)tie12 years3 of 100 (Routine)
14 October 2025Tanana AP, USdaily high min (Tie)2.8 C (37.0 F)tie103 years10 of 100 (Routine)
13 October 2025Tanana AP, USdaily high max11.7 C (53.1 F)1.1 C (2.0 F)56 years27 of 100 (Routine)
10 October 2025Tanana AP, USdaily high min3.9 C (39.0 F)1.1 C (2.0 F)123 years41 of 100 (Notable)
9 October 2025Tanana AP, USdaily high min5.6 C (42.1 F)1.7 C (3.1 F)100 years42 of 100 (Notable)
2 October 2025Tanana AP, USdaily snow depth12.7 cm (5.0 in)5.1 cm (2.0 in)94 years45 of 100 (Notable)
17 September 2025Tanana AP, USdaily high max18.9 C (66.0 F)0.6 C (1.1 F)52 years26 of 100 (Routine)
9 September 2025Tanana AP, USdaily high min (Tie)11.7 C (53.1 F)tie36 years5 of 100 (Routine)
8 September 2025Tanana AP, USdaily high min (Tie)11.1 C (52.0 F)tie36 years5 of 100 (Routine)
5 September 2025Tanana AP, USdaily high min11.7 C (53.1 F)1.1 C (2.0 F)23 years18 of 100 (Routine)
6 March 2025Tanana AP, USdaily high min-4.9 C (23.2 F)0.1 C (0.2 F)104 years40 of 100 (Notable)
5 March 2025Tanana AP, USdaily high min-5.5 C (22.1 F)0.1 C (0.2 F)76 years32 of 100 (Routine)
27 January 2025Tanana AP, USdaily snowfall17.0 cm (6.7 in)10.6 cm (4.2 in)45 years55 of 100 (Notable)

Climate Trend

89 complete years, 1918 to 2022
Annual mean temperature at Tanana AP as warming stripes, 1918 to 2022 One stripe for each of 89 complete years at Tanana AP, 1918 to 2022. Blue stripes are years cooler than the station's own mean of -4.1 C (24.7 F); red stripes are warmer. The coolest year was 1956, at -7.7 C (18.2 F), and the warmest was 2019, at -1.1 C (30.1 F). The strongest colour marks a difference of 3.6 C (6.5 F). 1918: -6.7 C, -2.6 C from the station mean1919: -4.7 C, -0.6 C from the station mean1920: -5.6 C, -1.5 C from the station mean1921: -5.0 C, -0.9 C from the station mean1922: -4.6 C, -0.5 C from the station mean1923: -3.4 C, +0.6 C from the station mean1925: -5.1 C, -1.0 C from the station mean1926: -1.4 C, +2.6 C from the station mean1927: -5.5 C, -1.4 C from the station mean1928: -3.3 C, +0.7 C from the station mean1929: -3.1 C, +0.9 C from the station mean1930: -5.1 C, -1.0 C from the station mean1931: -3.8 C, +0.3 C from the station mean1932: -6.4 C, -2.3 C from the station mean1934: -3.8 C, +0.3 C from the station mean1935: -5.2 C, -1.2 C from the station mean1936: -4.6 C, -0.5 C from the station mean1939: -3.9 C, +0.1 C from the station mean1940: -1.4 C, +2.7 C from the station mean1941: -3.5 C, +0.6 C from the station mean1942: -2.8 C, +1.2 C from the station mean1945: -4.9 C, -0.8 C from the station mean1946: -5.6 C, -1.6 C from the station mean1947: -5.1 C, -1.0 C from the station mean1948: -6.6 C, -2.5 C from the station mean1951: -4.8 C, -0.8 C from the station mean1952: -5.8 C, -1.8 C from the station mean1953: -4.0 C, +0.1 C from the station mean1954: -5.4 C, -1.3 C from the station mean1955: -6.2 C, -2.1 C from the station mean1956: -7.7 C, -3.6 C from the station mean1957: -2.7 C, +1.4 C from the station mean1958: -3.7 C, +0.4 C from the station mean1959: -5.2 C, -1.2 C from the station mean1960: -3.9 C, +0.2 C from the station mean1961: -6.3 C, -2.2 C from the station mean1962: -3.9 C, +0.2 C from the station mean1963: -4.4 C, -0.4 C from the station mean1964: -6.3 C, -2.2 C from the station mean1965: -4.7 C, -0.6 C from the station mean1966: -5.5 C, -1.4 C from the station mean1967: -3.8 C, +0.2 C from the station mean1968: -5.4 C, -1.3 C from the station mean1969: -4.0 C, 0.0 C from the station mean1970: -4.2 C, -0.1 C from the station mean1971: -6.8 C, -2.7 C from the station mean1976: -4.1 C, 0.0 C from the station mean1978: -2.3 C, +1.8 C from the station mean1980: -4.2 C, -0.1 C from the station mean1981: -2.0 C, +2.0 C from the station mean1982: -4.8 C, -0.7 C from the station mean1983: -4.2 C, -0.1 C from the station mean1984: -5.3 C, -1.2 C from the station mean1985: -4.0 C, +0.1 C from the station mean1986: -4.0 C, +0.1 C from the station mean1987: -2.9 C, +1.2 C from the station mean1988: -2.5 C, +1.6 C from the station mean1989: -4.1 C, -0.1 C from the station mean1990: -4.3 C, -0.2 C from the station mean1991: -3.2 C, +0.8 C from the station mean1992: -4.7 C, -0.6 C from the station mean1993: -1.4 C, +2.7 C from the station mean1994: -3.4 C, +0.7 C from the station mean1996: -4.8 C, -0.7 C from the station mean1997: -2.5 C, +1.6 C from the station mean1998: -1.5 C, +2.6 C from the station mean1999: -4.9 C, -0.8 C from the station mean2000: -3.7 C, +0.4 C from the station mean2001: -3.7 C, +0.3 C from the station mean2003: -3.3 C, +0.8 C from the station mean2004: -3.2 C, +0.9 C from the station mean2005: -2.8 C, +1.2 C from the station mean2006: -4.2 C, -0.2 C from the station mean2007: -2.8 C, +1.2 C from the station mean2008: -4.9 C, -0.8 C from the station mean2009: -4.2 C, -0.2 C from the station mean2010: -3.6 C, +0.4 C from the station mean2011: -3.8 C, +0.2 C from the station mean2012: -5.5 C, -1.5 C from the station mean2013: -3.8 C, +0.3 C from the station mean2014: -1.8 C, +2.3 C from the station mean2015: -2.1 C, +2.0 C from the station mean2016: -1.1 C, +3.0 C from the station mean2017: -2.2 C, +1.9 C from the station mean2018: -1.9 C, +2.2 C from the station mean2019: -1.1 C, +3.0 C from the station mean2020: -3.9 C, +0.2 C from the station mean2021: -4.1 C, 0.0 C from the station mean2022: -3.3 C, +0.8 C from the station mean19181930194019501960197019801990200020102020
One stripe for each of 89 complete years at Tanana AP, 1918 to 2022. Blue stripes are years cooler than the station's own mean of -4.1 C (24.7 F); red stripes are warmer. The coolest year was 1956, at -7.7 C (18.2 F), and the warmest was 2019, at -1.1 C (30.1 F). The strongest colour marks a difference of 3.6 C (6.5 F).
Annual mean temperature at Tanana AP as warming stripes, 1918 to 2022
YearAnnual mean temperatureDifference from the station mean
1918-6.7 C-2.65 C
1919-4.7 C-0.64 C
1920-5.6 C-1.52 C
1921-5.0 C-0.94 C
1922-4.6 C-0.51 C
1923-3.4 C+0.63 C
1925-5.1 C-1.05 C
1926-1.4 C+2.64 C
1927-5.5 C-1.44 C
1928-3.3 C+0.72 C
1929-3.1 C+0.92 C
1930-5.1 C-1.05 C
1931-3.8 C+0.31 C
1932-6.4 C-2.34 C
1934-3.8 C+0.31 C
1935-5.2 C-1.17 C
1936-4.6 C-0.51 C
1939-3.9 C+0.14 C
1940-1.4 C+2.71 C
1941-3.5 C+0.56 C
1942-2.8 C+1.23 C
1945-4.9 C-0.81 C
1946-5.6 C-1.56 C
1947-5.1 C-1.00 C
1948-6.6 C-2.51 C
1951-4.8 C-0.78 C
1952-5.8 C-1.78 C
1953-4.0 C+0.06 C
1954-5.4 C-1.31 C
1955-6.2 C-2.12 C
1956-7.7 C-3.59 C
1957-2.7 C+1.35 C
1958-3.7 C+0.40 C
1959-5.2 C-1.17 C
1960-3.9 C+0.18 C
1961-6.3 C-2.22 C
1962-3.9 C+0.21 C
1963-4.4 C-0.37 C
1964-6.3 C-2.23 C
1965-4.7 C-0.64 C
1966-5.5 C-1.45 C
1967-3.8 C+0.23 C
1968-5.4 C-1.35 C
1969-4.0 C+0.04 C
1970-4.2 C-0.15 C
1971-6.8 C-2.69 C
1976-4.1 C+0.00 C
1978-2.3 C+1.75 C
1980-4.2 C-0.10 C
1981-2.0 C+2.04 C
1982-4.8 C-0.73 C
1983-4.2 C-0.09 C
1984-5.3 C-1.23 C
1985-4.0 C+0.07 C
1986-4.0 C+0.11 C
1987-2.9 C+1.18 C
1988-2.5 C+1.58 C
1989-4.1 C-0.08 C
1990-4.3 C-0.24 C
1991-3.2 C+0.82 C
1992-4.7 C-0.59 C
1993-1.4 C+2.67 C
1994-3.4 C+0.69 C
1996-4.8 C-0.71 C
1997-2.5 C+1.60 C
1998-1.5 C+2.55 C
1999-4.9 C-0.84 C
2000-3.7 C+0.38 C
2001-3.7 C+0.34 C
2003-3.3 C+0.79 C
2004-3.2 C+0.88 C
2005-2.8 C+1.23 C
2006-4.2 C-0.18 C
2007-2.8 C+1.24 C
2008-4.9 C-0.81 C
2009-4.2 C-0.17 C
2010-3.6 C+0.44 C
2011-3.8 C+0.22 C
2012-5.5 C-1.48 C
2013-3.8 C+0.27 C
2014-1.8 C+2.25 C
2015-2.1 C+1.95 C
2016-1.1 C+2.98 C
2017-2.2 C+1.88 C
2018-1.9 C+2.21 C
2019-1.1 C+2.99 C
2020-3.9 C+0.20 C
2021-4.1 C-0.03 C
2022-3.3 C+0.81 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1918 to 2022. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 89 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tanana AP
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.3) per decade0.3 F (0.2 to 0.5) per decade1918 to 202289Rise
Mean daily maximum0.2 C (0.1 to 0.3) per decade0.3 F (0.2 to 0.5) per decade1918 to 202289Rise
Mean daily minimum0.2 C (0.1 to 0.3) per decade0.3 F (0.1 to 0.5) per decade1918 to 202289Rise

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

1901 to 2026
Yearly extremes at Tanana AP: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.4 C (93.9 F)196929.4 C (84.9 F)116
Coldest night (TNn)-60.0 C (-76.0 F)1989-47.2 C (-53.0 F)117
Wettest day (Rx1day)73.7 mm (2.9 in)193221.6 mm (0.8 in)116
Wettest five days (Rx5day)83.0 mm (3.3 in)196238.1 mm (1.5 in)116
Longest dry spell (CDD)157 days200737 days116

Hottest day (TXx)

Hottest day (TXx) at Tanana AP by year The hottest day of the year at Tanana AP, 1901 to 2026. The record is 34.4 C (93.9 F) in 1969, marked on the chart; the median year is 29.4 C (84.9 F). 10203040192019401960198020002020Record: 34.4 C (93.9 F) in 1969
The hottest day of the year at Tanana AP, 1901 to 2026. The record is 34.4 C (93.9 F) in 1969, marked on the chart; the median year is 29.4 C (84.9 F).
Hottest day (TXx) at Tanana AP by year
YearHottest day (TXx)
1901n/a
190211.7 C (53.1 F)
190331.1 C (88.0 F)
190429.4 C (84.9 F)
190532.2 C (90.0 F)
190622.8 C (73.0 F)
190732.2 C (90.0 F)
191729.4 C (84.9 F)
191831.1 C (88.0 F)
191931.7 C (89.1 F)
192027.2 C (81.0 F)
192130.0 C (86.0 F)
192225.0 C (77.0 F)
192330.6 C (87.1 F)
192428.9 C (84.0 F)
192527.8 C (82.0 F)
192630.0 C (86.0 F)
192728.9 C (84.0 F)
192828.3 C (82.9 F)
192927.2 C (81.0 F)
193028.3 C (82.9 F)
193127.2 C (81.0 F)
193227.8 C (82.0 F)
193330.6 C (87.1 F)
193430.6 C (87.1 F)
193528.9 C (84.0 F)
193630.6 C (87.1 F)
193731.7 C (89.1 F)
193829.4 C (84.9 F)
193930.6 C (87.1 F)
194030.0 C (86.0 F)
194128.3 C (82.9 F)
194230.0 C (86.0 F)
194328.3 C (82.9 F)
194430.0 C (86.0 F)
194527.2 C (81.0 F)
194633.3 C (91.9 F)
194728.9 C (84.0 F)
194830.0 C (86.0 F)
194928.9 C (84.0 F)
195030.0 C (86.0 F)
195128.3 C (82.9 F)
195227.2 C (81.0 F)
195332.8 C (91.0 F)
195427.2 C (81.0 F)
195531.1 C (88.0 F)
195628.3 C (82.9 F)
195731.7 C (89.1 F)
195832.2 C (90.0 F)
195928.9 C (84.0 F)
196032.2 C (90.0 F)
196128.3 C (82.9 F)
196229.4 C (84.9 F)
196330.0 C (86.0 F)
196427.8 C (82.0 F)
196526.7 C (80.1 F)
196626.7 C (80.1 F)
196731.1 C (88.0 F)
196831.7 C (89.1 F)
196934.4 C (93.9 F)
197026.7 C (80.1 F)
197132.2 C (90.0 F)
197226.1 C (79.0 F)
197322.2 C (72.0 F)
197427.8 C (82.0 F)
197530.6 C (87.1 F)
197631.1 C (88.0 F)
197732.2 C (90.0 F)
197828.9 C (84.0 F)
197927.8 C (82.0 F)
198027.8 C (82.0 F)
198127.2 C (81.0 F)
198230.0 C (86.0 F)
198331.1 C (88.0 F)
198428.3 C (82.9 F)
198528.9 C (84.0 F)
198629.4 C (84.9 F)
198731.7 C (89.1 F)
198828.9 C (84.0 F)
198928.3 C (82.9 F)
199030.6 C (87.1 F)
199132.8 C (91.0 F)
199229.4 C (84.9 F)
199330.6 C (87.1 F)
199430.6 C (87.1 F)
199528.9 C (84.0 F)
199627.8 C (82.0 F)
199728.9 C (84.0 F)
199830.0 C (86.0 F)
199932.8 C (91.0 F)
200027.8 C (82.0 F)
200128.3 C (82.9 F)
200229.4 C (84.9 F)
200327.8 C (82.0 F)
200429.4 C (84.9 F)
200528.3 C (82.9 F)
200628.3 C (82.9 F)
200729.4 C (84.9 F)
200829.4 C (84.9 F)
200931.7 C (89.1 F)
201029.4 C (84.9 F)
201131.7 C (89.1 F)
201228.9 C (84.0 F)
201331.7 C (89.1 F)
201430.6 C (87.1 F)
201531.1 C (88.0 F)
201631.7 C (89.1 F)
201729.4 C (84.9 F)
201830.6 C (87.1 F)
201931.1 C (88.0 F)
202026.7 C (80.1 F)
202128.9 C (84.0 F)
202230.0 C (86.0 F)
202330.0 C (86.0 F)
202430.0 C (86.0 F)
202529.4 C (84.9 F)
202616.7 C (62.1 F)

Coldest night (TNn)

Coldest night (TNn) at Tanana AP by year The coldest night of the year at Tanana AP, 1901 to 2026. The record is -60.0 C (-76.0 F) in 1989, marked on the chart; the median year is -47.2 C (-53.0 F). -60-40-200192019401960198020002020Record: -60.0 C (-76.0 F) in 1989
The coldest night of the year at Tanana AP, 1901 to 2026. The record is -60.0 C (-76.0 F) in 1989, marked on the chart; the median year is -47.2 C (-53.0 F).
Coldest night (TNn) at Tanana AP by year
YearColdest night (TNn)
1901-45.0 C (-49.0 F)
1902-53.3 C (-63.9 F)
1903-55.6 C (-68.1 F)
1904-49.4 C (-56.9 F)
1905-52.8 C (-63.0 F)
1906-57.2 C (-71.0 F)
1907-50.0 C (-58.0 F)
1917-46.7 C (-52.1 F)
1918-48.9 C (-56.0 F)
1919-54.4 C (-65.9 F)
1920-48.9 C (-56.0 F)
1921-46.7 C (-52.1 F)
1922-42.8 C (-45.0 F)
1923-48.9 C (-56.0 F)
1924-47.8 C (-54.0 F)
1925-50.0 C (-58.0 F)
1926-44.4 C (-47.9 F)
1927-45.0 C (-49.0 F)
1928-42.8 C (-45.0 F)
1929-49.4 C (-56.9 F)
1930-48.3 C (-54.9 F)
1931-44.4 C (-47.9 F)
1932-52.8 C (-63.0 F)
1933-55.6 C (-68.1 F)
1934-55.6 C (-68.1 F)
1935-50.0 C (-58.0 F)
1936-50.0 C (-58.0 F)
1937-51.1 C (-60.0 F)
1938-44.4 C (-47.9 F)
1939-48.9 C (-56.0 F)
1940-48.9 C (-56.0 F)
1941-44.4 C (-47.9 F)
1942-46.7 C (-52.1 F)
1943-48.3 C (-54.9 F)
1944-45.0 C (-49.0 F)
1945-46.7 C (-52.1 F)
1946-50.6 C (-59.1 F)
1947-57.2 C (-71.0 F)
1948-46.7 C (-52.1 F)
1949-43.3 C (-45.9 F)
1950-39.4 C (-38.9 F)
1951-48.9 C (-56.0 F)
1952-47.8 C (-54.0 F)
1953-52.2 C (-62.0 F)
1954-47.2 C (-53.0 F)
1955-47.2 C (-53.0 F)
1956-49.4 C (-56.9 F)
1957-48.9 C (-56.0 F)
1958-45.0 C (-49.0 F)
1959-45.0 C (-49.0 F)
1960-50.0 C (-58.0 F)
1961-53.3 C (-63.9 F)
1962-48.3 C (-54.9 F)
1963-50.0 C (-58.0 F)
1964-48.9 C (-56.0 F)
1965-46.7 C (-52.1 F)
1966-48.3 C (-54.9 F)
1967-45.6 C (-50.1 F)
1968-52.8 C (-63.0 F)
1969-52.8 C (-63.0 F)
1970-45.6 C (-50.1 F)
1971-56.1 C (-69.0 F)
1972-55.0 C (-67.0 F)
1973-43.3 C (-45.9 F)
1974-50.0 C (-58.0 F)
1975-48.9 C (-56.0 F)
1976-49.4 C (-56.9 F)
1977-40.0 C (-40.0 F)
1978-44.4 C (-47.9 F)
1979-46.7 C (-52.1 F)
1980-46.7 C (-52.1 F)
1981-43.9 C (-47.0 F)
1982-45.6 C (-50.1 F)
1983-47.2 C (-53.0 F)
1984-48.9 C (-56.0 F)
1985-48.9 C (-56.0 F)
1986-43.9 C (-47.0 F)
1987-46.7 C (-52.1 F)
1988-44.4 C (-47.9 F)
1989-60.0 C (-76.0 F)
1990-49.4 C (-56.9 F)
1991-54.4 C (-65.9 F)
1992-42.8 C (-45.0 F)
1993-53.3 C (-63.9 F)
1994-46.1 C (-51.0 F)
1995-45.6 C (-50.1 F)
1996-46.7 C (-52.1 F)
1997-49.4 C (-56.9 F)
1998-43.3 C (-45.9 F)
1999-50.6 C (-59.1 F)
2000-50.0 C (-58.0 F)
2001-42.2 C (-44.0 F)
2002-42.2 C (-44.0 F)
2003-45.0 C (-49.0 F)
2004-44.4 C (-47.9 F)
2005-49.4 C (-56.9 F)
2006-46.7 C (-52.1 F)
2007-45.0 C (-49.0 F)
2008-45.6 C (-50.1 F)
2009-47.2 C (-53.0 F)
2010-44.4 C (-47.9 F)
2011-46.7 C (-52.1 F)
2012-51.6 C (-60.9 F)
2013-47.1 C (-52.8 F)
2014-41.0 C (-41.8 F)
2015-42.7 C (-44.9 F)
2016-38.2 C (-36.8 F)
2017-50.5 C (-58.9 F)
2018-46.6 C (-51.9 F)
2019-48.2 C (-54.8 F)
2020-45.5 C (-49.9 F)
2021-41.0 C (-41.8 F)
2022-44.3 C (-47.7 F)
2023-42.1 C (-43.8 F)
2024-49.9 C (-57.8 F)
2025-45.5 C (-49.9 F)
2026-11.7 C (10.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Tanana AP by year The wettest day of the year at Tanana AP, 1901 to 2026. The record is 73.7 mm (2.9 in) in 1932, marked on the chart; the median year is 21.6 mm (0.8 in). 020406080192019401960198020002020Record: 73.7 mm (2.9 in) in 1932
The wettest day of the year at Tanana AP, 1901 to 2026. The record is 73.7 mm (2.9 in) in 1932, marked on the chart; the median year is 21.6 mm (0.8 in).
Wettest day (Rx1day) at Tanana AP by year
YearWettest day (Rx1day)
1901n/a
19027.6 mm (0.30 in)
190311.2 mm (0.4 in)
190420.3 mm (0.8 in)
190520.3 mm (0.8 in)
190625.4 mm (1.0 in)
190719.8 mm (0.8 in)
191719.8 mm (0.8 in)
191818.3 mm (0.7 in)
191924.1 mm (0.9 in)
192018.8 mm (0.7 in)
192124.1 mm (0.9 in)
192221.8 mm (0.9 in)
192321.3 mm (0.8 in)
192418.5 mm (0.7 in)
192519.8 mm (0.8 in)
192622.9 mm (0.9 in)
192712.7 mm (0.5 in)
192827.2 mm (1.1 in)
192919.3 mm (0.8 in)
193035.6 mm (1.4 in)
193125.4 mm (1.0 in)
193273.7 mm (2.9 in)
193313.0 mm (0.5 in)
193416.8 mm (0.7 in)
193528.4 mm (1.1 in)
193621.8 mm (0.9 in)
193759.7 mm (2.4 in)
193837.1 mm (1.5 in)
193915.5 mm (0.6 in)
194025.4 mm (1.0 in)
194124.6 mm (1.0 in)
194241.9 mm (1.6 in)
194311.4 mm (0.4 in)
194439.4 mm (1.6 in)
194522.4 mm (0.9 in)
194617.5 mm (0.7 in)
194727.4 mm (1.1 in)
194841.9 mm (1.6 in)
194931.2 mm (1.2 in)
195029.7 mm (1.2 in)
195118.0 mm (0.7 in)
195215.5 mm (0.6 in)
195340.1 mm (1.6 in)
195418.0 mm (0.7 in)
195527.4 mm (1.1 in)
195619.3 mm (0.8 in)
195723.9 mm (0.9 in)
195818.3 mm (0.7 in)
195928.7 mm (1.1 in)
196026.9 mm (1.1 in)
196115.7 mm (0.6 in)
196235.1 mm (1.4 in)
196332.5 mm (1.3 in)
196427.2 mm (1.1 in)
196525.7 mm (1.0 in)
196614.5 mm (0.6 in)
196749.8 mm (2.0 in)
196815.2 mm (0.6 in)
196912.4 mm (0.5 in)
197018.3 mm (0.7 in)
197114.7 mm (0.6 in)
197211.9 mm (0.5 in)
197320.6 mm (0.8 in)
19749.7 mm (0.38 in)
197526.2 mm (1.0 in)
197619.1 mm (0.8 in)
197726.4 mm (1.0 in)
197819.3 mm (0.8 in)
197919.3 mm (0.8 in)
198024.6 mm (1.0 in)
198148.3 mm (1.9 in)
198233.0 mm (1.3 in)
198316.5 mm (0.6 in)
198419.6 mm (0.8 in)
198524.1 mm (0.9 in)
198619.8 mm (0.8 in)
198715.5 mm (0.6 in)
198813.7 mm (0.5 in)
198914.0 mm (0.6 in)
199028.2 mm (1.1 in)
199137.8 mm (1.5 in)
199232.0 mm (1.3 in)
199333.0 mm (1.3 in)
199430.5 mm (1.2 in)
199512.4 mm (0.5 in)
199627.9 mm (1.1 in)
199720.1 mm (0.8 in)
199842.2 mm (1.7 in)
199925.4 mm (1.0 in)
200021.1 mm (0.8 in)
200129.2 mm (1.1 in)
200225.9 mm (1.0 in)
200334.5 mm (1.4 in)
200411.9 mm (0.5 in)
200524.9 mm (1.0 in)
200621.1 mm (0.8 in)
20077.9 mm (0.31 in)
200826.9 mm (1.1 in)
200917.3 mm (0.7 in)
201016.3 mm (0.6 in)
201120.3 mm (0.8 in)
201212.7 mm (0.5 in)
201322.4 mm (0.9 in)
201432.0 mm (1.3 in)
201533.0 mm (1.3 in)
201619.6 mm (0.8 in)
201723.1 mm (0.9 in)
201815.5 mm (0.6 in)
201920.1 mm (0.8 in)
202014.7 mm (0.6 in)
202122.9 mm (0.9 in)
202229.2 mm (1.1 in)
202317.5 mm (0.7 in)
202423.6 mm (0.9 in)
20259.7 mm (0.38 in)
20260.0 mm (0.00 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Tanana AP by year The wettest five days of the year at Tanana AP, 1901 to 2026. The record is 83.0 mm (3.3 in) in 1962, marked on the chart; the median year is 38.1 mm (1.5 in). 0255075100192019401960198020002020Record: 83.0 mm (3.3 in) in 1962
The wettest five days of the year at Tanana AP, 1901 to 2026. The record is 83.0 mm (3.3 in) in 1962, marked on the chart; the median year is 38.1 mm (1.5 in).
Wettest five days (Rx5day) at Tanana AP by year
YearWettest five days (Rx5day)
1901n/a
190216.5 mm (0.6 in)
190322.4 mm (0.9 in)
190433.0 mm (1.3 in)
190538.8 mm (1.5 in)
190625.4 mm (1.0 in)
190732.7 mm (1.3 in)
191754.3 mm (2.1 in)
191836.9 mm (1.5 in)
191949.2 mm (1.9 in)
192038.6 mm (1.5 in)
192141.4 mm (1.6 in)
192247.0 mm (1.9 in)
192346.7 mm (1.8 in)
192462.4 mm (2.5 in)
192551.5 mm (2.0 in)
192634.8 mm (1.4 in)
192723.3 mm (0.9 in)
192835.3 mm (1.4 in)
192935.1 mm (1.4 in)
193063.3 mm (2.5 in)
193144.2 mm (1.7 in)
193281.3 mm (3.2 in)
193321.8 mm (0.9 in)
193423.1 mm (0.9 in)
193562.7 mm (2.5 in)
193647.2 mm (1.9 in)
193759.7 mm (2.4 in)
193863.6 mm (2.5 in)
193922.3 mm (0.9 in)
194027.9 mm (1.1 in)
194136.8 mm (1.4 in)
194250.6 mm (2.0 in)
194327.7 mm (1.1 in)
194445.2 mm (1.8 in)
194561.2 mm (2.4 in)
194638.9 mm (1.5 in)
194731.5 mm (1.2 in)
194866.3 mm (2.6 in)
194945.2 mm (1.8 in)
195040.4 mm (1.6 in)
195175.4 mm (3.0 in)
195240.7 mm (1.6 in)
195342.4 mm (1.7 in)
195435.0 mm (1.4 in)
195552.1 mm (2.1 in)
195636.6 mm (1.4 in)
195731.0 mm (1.2 in)
195824.2 mm (1.0 in)
195960.0 mm (2.4 in)
196059.8 mm (2.4 in)
196139.9 mm (1.6 in)
196283.0 mm (3.3 in)
196346.2 mm (1.8 in)
196443.2 mm (1.7 in)
196554.9 mm (2.2 in)
196634.0 mm (1.3 in)
196781.5 mm (3.2 in)
196824.5 mm (1.0 in)
196921.0 mm (0.8 in)
197041.7 mm (1.6 in)
197135.6 mm (1.4 in)
197222.3 mm (0.9 in)
197329.0 mm (1.1 in)
197423.7 mm (0.9 in)
197555.2 mm (2.2 in)
197622.4 mm (0.9 in)
197737.4 mm (1.5 in)
197834.6 mm (1.4 in)
197934.3 mm (1.4 in)
198040.1 mm (1.6 in)
198160.0 mm (2.4 in)
198256.9 mm (2.2 in)
198335.1 mm (1.4 in)
198435.1 mm (1.4 in)
198547.4 mm (1.9 in)
198620.1 mm (0.8 in)
198748.0 mm (1.9 in)
198823.6 mm (0.9 in)
198936.3 mm (1.4 in)
199037.6 mm (1.5 in)
199144.7 mm (1.8 in)
199235.3 mm (1.4 in)
199361.8 mm (2.4 in)
199450.0 mm (2.0 in)
199524.5 mm (1.0 in)
199639.4 mm (1.6 in)
199734.6 mm (1.4 in)
199863.4 mm (2.5 in)
199952.1 mm (2.1 in)
200029.9 mm (1.2 in)
200152.8 mm (2.1 in)
200246.5 mm (1.8 in)
200348.2 mm (1.9 in)
200417.5 mm (0.7 in)
200544.0 mm (1.7 in)
200630.0 mm (1.2 in)
200712.0 mm (0.5 in)
200844.8 mm (1.8 in)
200928.5 mm (1.1 in)
201032.3 mm (1.3 in)
201134.5 mm (1.4 in)
201227.7 mm (1.1 in)
201338.6 mm (1.5 in)
201440.1 mm (1.6 in)
201558.4 mm (2.3 in)
201637.8 mm (1.5 in)
201738.1 mm (1.5 in)
201828.7 mm (1.1 in)
201938.1 mm (1.5 in)
202036.0 mm (1.4 in)
202136.9 mm (1.5 in)
202237.8 mm (1.5 in)
202323.9 mm (0.9 in)
202474.7 mm (2.9 in)
202519.6 mm (0.8 in)
20260.0 mm (0.00 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Tanana AP by year The longest dry spell of the year at Tanana AP, 1901 to 2026. The record is 157 days in 2007, marked on the chart; the median year is 37 days. 050100150200192019401960198020002020Record: 157 days in 2007
The longest dry spell of the year at Tanana AP, 1901 to 2026. The record is 157 days in 2007, marked on the chart; the median year is 37 days.
Longest dry spell (CDD) at Tanana AP by year
YearLongest dry spell (CDD)
1901n/a
190217 days
190319 days
190436 days
190572 days
190631 days
190731 days
191740 days
191849 days
191977 days
192036 days
192131 days
192232 days
192354 days
192433 days
192525 days
192623 days
192724 days
192828 days
192920 days
193024 days
193129 days
193232 days
193338 days
193496 days
193541 days
193653 days
193754 days
193842 days
193986 days
194071 days
194135 days
194230 days
194330 days
194436 days
194531 days
194623 days
194737 days
194830 days
194941 days
195063 days
195148 days
195241 days
195346 days
195468 days
195537 days
195630 days
195747 days
195835 days
195963 days
196045 days
196137 days
196224 days
196341 days
196425 days
196528 days
196630 days
196745 days
196857 days
196942 days
197046 days
197130 days
197229 days
197328 days
197450 days
197518 days
197625 days
197726 days
197835 days
197937 days
198052 days
198131 days
198234 days
198354 days
198434 days
198529 days
198645 days
198747 days
198868 days
198932 days
199045 days
199138 days
199232 days
199351 days
199424 days
199543 days
199652 days
199772 days
199863 days
199943 days
200081 days
200170 days
200251 days
200339 days
2004142 days
2005129 days
200699 days
2007157 days
200842 days
200928 days
201067 days
201140 days
201287 days
2013141 days
201494 days
201529 days
201621 days
201714 days
201822 days
201935 days
202031 days
202114 days
202226 days
202332 days
202434 days
202511 days
20265 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

89 years with a frost

Across 89 years with a frost, the median last spring frost at Tanana AP falls on 28 May and the median first autumn frost on 21 August, which leaves a median of 83 days between them.

In 1991 to 2022 the median growing season was 89 days. That is 18 days more than in 1918 to 1955.

Fitted over all years, the growing season changes by +2.4 days per decade at this station.

Frost dates and growing season at Tanana AP
MeasureMedian, all yearsEarliest period (1918 to 1955)Recent period (1991 to 2022)Recent against earliestFitted trend
Last spring frost28 May31 May26 May5 days earlier-0.9 days per decade
First autumn frost21 August15 August24 August9 days later+1.5 days per decade
Growing days83 days71 days89 days18 days more+2.4 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

87 years, 1905 to 2014

A day with at least 22.3 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 58.6 mm (2.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Tanana AP: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years22.3 mm (0.9 in)
5 years30.7 mm (1.2 in)
10 years36.7 mm (1.4 in)
25 years45.0 mm (1.8 in)
50 years51.6 mm (2.0 in)
100 years58.6 mm (2.3 in)Longer than the 87 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 87 years of values from 1905 to 2014.

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: 73.7 mm (2.9 in) in 1932; 49.8 mm (2.0 in) in 1967; 48.3 mm (1.9 in) in 1981.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Tanana AP, at 1988 and 2000. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1988 ran 0.5 C (1.0 F) higher than in the years before (possible change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 2000 ran 0.4 C (0.6 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Tanana AP, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1988+0.5+1.0possible5
2000-0.4-0.6possible5

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.

Download the Data

  • Data for Tanana AP standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Tanana AP 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

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