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Built 2026-10-19 (19 October 2026)

Tommot Weather Records (RSM00031005)

Record envelope, standing records and threshold days for Tommot (RSM00031005), Russia, with 90 years of record.

Key Facts for Tommot

  • Tommot (RSM00031005) is a weather station in Russia at 58.95 latitude and 126.30 longitude, 283 m (928 ft) above sea level.
  • The station reports from 1936 to 2025, 90 years of record.
  • 1,464 records set at Tommot still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Tommot set a daily record precipitation of 24.9 mm (1.0 in) on 8 August 2025.

About the Station

  • Location: Russia, 58.95 latitude, 126.30 longitude.
  • Elevation: 283 m (928 ft).
  • Period of record: 1936 to 2025, 90 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

18 days at or beyond a record
Daily record high and record low at Tommot, with 2026 drawn through them The band shows the record high and record low for each calendar day at Tommot. The lines show the 2026 daily maximum and minimum. 18 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 Tommot. The lines show the 2026 daily maximum and minimum. 18 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Tommot, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan-6.9 C (19.6 F)-57.2 C (-71.0 F)-6.9 C (19.6 F)-52.0 C (-61.6 F)
Feb-2.5 C (27.5 F)-53.0 C (-63.4 F)-4.5 C (23.9 F)-44.8 C (-48.6 F)
Mar13.1 C (55.6 F)-48.7 C (-55.7 F)3.5 C (38.3 F)-45.8 C (-50.4 F)
Apr19.0 C (66.2 F)-37.2 C (-35.0 F)12.4 C (54.3 F)-13.8 C (7.2 F)
May30.1 C (86.2 F)-15.0 C (5.0 F)29.1 C (84.4 F)-8.4 C (16.9 F)
Jun36.1 C (97.0 F)-4.6 C (23.7 F)32.1 C (89.8 F)-3.0 C (26.6 F)
Jul37.1 C (98.8 F)-2.4 C (27.7 F)30.5 C (86.9 F)4.8 C (40.6 F)
Aug34.6 C (94.3 F)-8.4 C (16.9 F)26.3 C (79.3 F)1.6 C (34.9 F)
Sep28.6 C (83.5 F)-19.0 C (-2.2 F)n/an/a
Oct19.1 C (66.4 F)-37.3 C (-35.1 F)n/an/a
Nov8.5 C (47.3 F)-47.0 C (-52.6 F)n/an/a
Dec-0.7 C (30.7 F)-54.0 C (-65.2 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Tommot by the year they were set 1,464 records at Tommot still stand. 2020 holds the most, with 80. 0204060801936: 31959: 51960: 11962: 11969: 391970: 341971: 101975: 181976: 171977: 211978: 351979: 621980: 431981: 571982: 81983: 281984: 461985: 461986: 481987: 651988: 441989: 381990: 471991: 392012: 152013: 582014: 792015: 522016: 432017: 612018: 462019: 432020: 802021: 582022: 432023: 672024: 352025: 291936196919761980198419882012201620202024
1,464 records at Tommot still stand. 2020 holds the most, with 80.
Standing records at Tommot by the year they were set
Year setStanding records
19363
19595
19601
19621
196939
197034
197110
197518
197617
197721
197835
197962
198043
198157
19828
198328
198446
198546
198648
198765
198844
198938
199047
199139
201215
201358
201479
201552
201643
201761
201846
201943
202080
202158
202243
202367
202435
202529

All-Time Record Progression

1 new records
When Tommot set new all-time records 1 all-time records were set at Tommot between 25 July 2022 and 25 July 2022. Each dot is a new record. Record daily precipitation25 July 2022: Record daily precipitation 99.1 mm (3.9 in)
1 all-time records were set at Tommot between 25 July 2022 and 25 July 2022. Each dot is a new record.
When Tommot set new all-time records
DateKindDetail
2022-07-25Record daily precipitationRecord daily precipitation 99.1 mm (3.9 in)

Wettest Day of Each Month

Jul: 99.1 mm (3.9 in)
Record daily precipitation for each month at Tommot The wettest day on record for each calendar month at Tommot. The most was 99.1 mm (3.9 in) on 25 July 2022. 0255075100 Jan: 6.1 mm (0.24 in), 10 January 1988 Jan Feb: 6.3 mm (0.25 in), 13 February 1976 Feb Mar: 13.0 mm (0.5 in), 26 March 2020 Mar Apr: 14.7 mm (0.6 in), 20 April 1962 Apr May: 29.5 mm (1.2 in), 31 May 1949 May Jun: 41.8 mm (1.6 in), 27 June 1949 Jun Jul: 99.1 mm (3.9 in), 25 July 2022 Jul Aug: 61.4 mm (2.4 in), 12 August 1988 Aug Sep: 52.7 mm (2.1 in), 3 September 1959 Sep Oct: 16.3 mm (0.6 in), 11 October 1978 Oct Nov: 10.5 mm (0.4 in), 20 November 1950 Nov Dec: 7.0 mm (0.28 in), 1 December 1958 Dec
The wettest day on record for each calendar month at Tommot. The most was 99.1 mm (3.9 in) on 25 July 2022.
Record daily precipitation for each month at Tommot
MonthRecord daily precipitation (mm)Date
Jan6.1 mm (0.24 in)10 January 1988
Feb6.3 mm (0.25 in)13 February 1976
Mar13.0 mm (0.5 in)26 March 2020
Apr14.7 mm (0.6 in)20 April 1962
May29.5 mm (1.2 in)31 May 1949
Jun41.8 mm (1.6 in)27 June 1949
Jul99.1 mm (3.9 in)25 July 2022
Aug61.4 mm (2.4 in)12 August 1988
Sep52.7 mm (2.1 in)3 September 1959
Oct16.3 mm (0.6 in)11 October 1978
Nov10.5 mm (0.4 in)20 November 1950
Dec7.0 mm (0.28 in)1 December 1958

Period of Record Coverage

1936 to 2025
Days with data per year at Tommot 39 years of record at Tommot, 1936 to 2025. 37 years have data for under 90 percent of days and are left out of rankings: 1936, 1959, 1962, 1969, 1970, 1971, 1973, 1974 and others. 1936: 10 of 366 days1959: 16 of 365 days1962: 11 of 365 days1969: 166 of 365 days1970: 202 of 365 days1971: 52 of 365 days1973: 2 of 365 days1974: 4 of 365 days1975: 82 of 365 days1976: 106 of 366 days1977: 90 of 365 days1978: 185 of 365 days1979: 224 of 365 days1980: 291 of 366 days1981: 268 of 365 days1982: 28 of 365 days1983: 132 of 365 days1984: 263 of 366 days1985: 276 of 365 days1986: 287 of 365 days1987: 267 of 365 days1988: 261 of 366 days1989: 283 of 365 days1990: 277 of 365 days1991: 189 of 365 days2012: 115 of 366 days2013: 347 of 365 days2014: 334 of 365 days2015: 317 of 365 days2016: 297 of 366 days2017: 318 of 365 days2018: 304 of 365 days2019: 280 of 365 days2020: 303 of 366 days2021: 300 of 365 days2022: 308 of 365 days2023: 295 of 365 days2024: 298 of 366 days2025: 200 of 365 days19701975198019851990201520202025
39 years of record at Tommot, 1936 to 2025. 37 years have data for under 90 percent of days and are left out of rankings: 1936, 1959, 1962, 1969, 1970, 1971, 1973, 1974 and others.
Days with data per year at Tommot
YearDays with dataShare of yearComplete
1936103%No
1959164%No
1962113%No
196916645%No
197020255%No
19715214%No
197321%No
197441%No
19758222%No
197610629%No
19779025%No
197818551%No
197922461%No
198029180%No
198126873%No
1982288%No
198313236%No
198426372%No
198527676%No
198628779%No
198726773%No
198826171%No
198928378%No
199027776%No
199118952%No
201211531%No
201334795%Yes
201433492%Yes
201531787%No
201629781%No
201731887%No
201830483%No
201928077%No
202030383%No
202130082%No
202230884%No
202329581%No
202429881%No
202520055%No

Latest Records

20
Latest records at Tommot
DateStationRecordValueBeat old record byOld record stoodSignificance
8 August 2025Tommot, RUdaily rain24.9 mm (1.0 in)13.8 mm (0.5 in)63 years20 of 100 (Routine)
14 May 2025Tommot, RUdaily rain13.0 mm (0.5 in)4.1 mm (0.16 in)7 years20 of 100 (Routine)
20 March 2025Tommot, RUdaily rain7.1 mm (0.28 in)2.0 mm (0.08 in)2 years18 of 100 (Routine)
25 January 2025Tommot, RUdaily rain2.0 mm (0.08 in)0.2 mm (0.01 in)10 years12 of 100 (Routine)
18 October 2024Tommot, RUdaily rain8.9 mm (0.35 in)0.8 mm (0.03 in)12 years14 of 100 (Routine)
10 September 2024Tommot, RUdaily rain31.0 mm (1.2 in)11.2 mm (0.4 in)47 years40 of 100 (Notable)
5 August 2024Tommot, RUdaily rain15.0 mm (0.6 in)1.8 mm (0.07 in)73 years20 of 100 (Routine)
2 May 2024Tommot, RUdaily rain25.9 mm (1.0 in)8.8 mm (0.35 in)54 years47 of 100 (Notable)
30 November 2023Tommot, RUdaily rain3.0 mm (0.12 in)0.4 mm (0.02 in)56 years20 of 100 (Routine)
1 July 2023Tommot, RUdaily rain27.9 mm (1.1 in)1.6 mm (0.06 in)52 years25 of 100 (Routine)
13 June 2023Tommot, RUdaily rain27.9 mm (1.1 in)5.8 mm (0.23 in)4 years19 of 100 (Routine)
17 May 2023Tommot, RUdaily rain15.7 mm (0.6 in)6.9 mm (0.27 in)48 years20 of 100 (Routine)
12 May 2023Tommot, RUdaily rain19.1 mm (0.8 in)4.0 mm (0.16 in)40 years20 of 100 (Routine)
3 April 2023Tommot, RUdaily rain9.9 mm (0.39 in)4.5 mm (0.18 in)74 years20 of 100 (Routine)
20 March 2023Tommot, RUdaily rain5.1 mm (0.20 in)1.6 mm (0.06 in)70 years20 of 100 (Routine)
19 March 2023Tommot, RUdaily rain7.1 mm (0.28 in)5.9 mm (0.23 in)49 years20 of 100 (Routine)
11 March 2023Tommot, RUdaily rain5.1 mm (0.20 in)3.6 mm (0.14 in)40 years20 of 100 (Routine)
6 August 2022Tommot, RUdaily rain39.9 mm (1.6 in)12.4 mm (0.5 in)44 years38 of 100 (Notable)
25 July 2022Tommot, RUall-time rain99.1 mm (3.9 in)35.4 mm (1.4 in)63 years87 of 100 (Exceptional)
5 May 2022Tommot, RUdaily rain6.1 mm (0.24 in)1.4 mm (0.06 in)79 years20 of 100 (Routine)

Extremes by Year

1936 to 2025
Yearly extremes at Tommot: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.1 C (98.8 F)202033.0 C (91.4 F)39
Coldest night (TNn)-57.2 C (-71.0 F)2023-50.0 C (-58.0 F)39
Wettest day (Rx1day)99.1 mm (3.9 in)202227.6 mm (1.1 in)70
Wettest five days (Rx5day)108.2 mm (4.3 in)198848.1 mm (1.9 in)70
Longest dry spell (CDD)69 days194525 days70

Hottest day (TXx)

Hottest day (TXx) at Tommot by year The hottest day of the year at Tommot, 1936 to 2025. The record is 37.1 C (98.8 F) in 2020, marked on the chart; the median year is 33.0 C (91.4 F). -200204019401960198020002020Record: 37.1 C (98.8 F) in 2020
The hottest day of the year at Tommot, 1936 to 2025. The record is 37.1 C (98.8 F) in 2020, marked on the chart; the median year is 33.0 C (91.4 F).
Hottest day (TXx) at Tommot by year
YearHottest day (TXx)
1936-6.1 C (21.0 F)
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
195933.9 C (93.0 F)
1960n/a
1961n/a
196222.8 C (73.0 F)
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
196932.8 C (91.0 F)
197036.1 C (97.0 F)
197113.9 C (57.0 F)
1972n/a
1973-9.0 C (15.8 F)
197428.0 C (82.4 F)
197534.0 C (93.2 F)
197632.0 C (89.6 F)
197731.0 C (87.8 F)
197831.0 C (87.8 F)
197933.0 C (91.4 F)
198034.0 C (93.2 F)
198131.0 C (87.8 F)
198211.8 C (53.2 F)
198329.8 C (85.6 F)
198432.2 C (90.0 F)
198534.1 C (93.4 F)
198634.6 C (94.3 F)
198732.2 C (90.0 F)
198834.9 C (94.8 F)
198930.6 C (87.1 F)
199032.6 C (90.7 F)
199134.1 C (93.4 F)
1992n/a
201224.1 C (75.4 F)
201334.2 C (93.6 F)
201434.0 C (93.2 F)
201534.5 C (94.1 F)
201630.1 C (86.2 F)
201736.1 C (97.0 F)
201833.7 C (92.7 F)
201933.1 C (91.6 F)
202037.1 C (98.8 F)
202136.0 C (96.8 F)
202235.0 C (95.0 F)
202334.1 C (93.4 F)
202436.9 C (98.4 F)
202532.1 C (89.8 F)

Coldest night (TNn)

Coldest night (TNn) at Tommot by year The coldest night of the year at Tommot, 1936 to 2025. The record is -57.2 C (-71.0 F) in 2023, marked on the chart; the median year is -50.0 C (-58.0 F). -60-40-2002019401960198020002020Record: -57.2 C (-71.0 F) in 2023
The coldest night of the year at Tommot, 1936 to 2025. The record is -57.2 C (-71.0 F) in 2023, marked on the chart; the median year is -50.0 C (-58.0 F).
Coldest night (TNn) at Tommot by year
YearColdest night (TNn)
1936-40.0 C (-40.0 F)
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959-50.0 C (-58.0 F)
1960-27.8 C (-18.0 F)
1961n/a
1962-6.1 C (21.0 F)
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969-52.8 C (-63.0 F)
1970-52.8 C (-63.0 F)
1971-50.0 C (-58.0 F)
1972n/a
1973n/a
19749.0 C (48.2 F)
1975-42.0 C (-43.6 F)
1976-49.0 C (-56.2 F)
1977-48.0 C (-54.4 F)
1978-47.0 C (-52.6 F)
1979-54.0 C (-65.2 F)
1980-50.0 C (-58.0 F)
1981-50.0 C (-58.0 F)
1982-54.2 C (-65.6 F)
1983-53.9 C (-65.0 F)
1984-52.2 C (-62.0 F)
1985-53.2 C (-63.8 F)
1986-52.3 C (-62.1 F)
1987-55.2 C (-67.4 F)
1988-49.5 C (-57.1 F)
1989-49.2 C (-56.6 F)
1990-52.6 C (-62.7 F)
1991-48.6 C (-55.5 F)
1992n/a
2012-51.6 C (-60.9 F)
2013-49.4 C (-56.9 F)
2014-52.3 C (-62.1 F)
2015-46.1 C (-51.0 F)
2016-49.7 C (-57.5 F)
2017-48.0 C (-54.4 F)
2018-51.8 C (-61.2 F)
2019-50.8 C (-59.4 F)
2020-51.2 C (-60.2 F)
2021-55.7 C (-68.3 F)
2022-50.9 C (-59.6 F)
2023-57.2 C (-71.0 F)
2024-48.5 C (-55.3 F)
2025-52.0 C (-61.6 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Tommot by year The wettest day of the year at Tommot, 1936 to 2025. The record is 99.1 mm (3.9 in) in 2022, marked on the chart; the median year is 27.6 mm (1.1 in). 025507510019401960198020002020Record: 99.1 mm (3.9 in) in 2022
The wettest day of the year at Tommot, 1936 to 2025. The record is 99.1 mm (3.9 in) in 2022, marked on the chart; the median year is 27.6 mm (1.1 in).
Wettest day (Rx1day) at Tommot by year
YearWettest day (Rx1day)
1936n/a
193724.3 mm (1.0 in)
193828.3 mm (1.1 in)
193923.0 mm (0.9 in)
194021.7 mm (0.9 in)
194114.7 mm (0.6 in)
194226.2 mm (1.0 in)
194352.8 mm (2.1 in)
194424.8 mm (1.0 in)
194520.4 mm (0.8 in)
194619.0 mm (0.7 in)
194722.0 mm (0.9 in)
194837.8 mm (1.5 in)
194941.8 mm (1.6 in)
195025.2 mm (1.0 in)
195136.9 mm (1.5 in)
195228.0 mm (1.1 in)
195328.5 mm (1.1 in)
195437.8 mm (1.5 in)
195529.3 mm (1.2 in)
195623.1 mm (0.9 in)
195743.4 mm (1.7 in)
195863.7 mm (2.5 in)
195952.7 mm (2.1 in)
196015.1 mm (0.6 in)
196125.0 mm (1.0 in)
196220.5 mm (0.8 in)
196335.8 mm (1.4 in)
196440.6 mm (1.6 in)
196532.3 mm (1.3 in)
196625.5 mm (1.0 in)
196716.0 mm (0.6 in)
196818.0 mm (0.7 in)
196920.0 mm (0.8 in)
197032.8 mm (1.3 in)
197126.3 mm (1.0 in)
197226.4 mm (1.0 in)
197329.6 mm (1.2 in)
197443.6 mm (1.7 in)
197542.3 mm (1.7 in)
197645.5 mm (1.8 in)
197727.5 mm (1.1 in)
197830.8 mm (1.2 in)
197925.5 mm (1.0 in)
198024.2 mm (1.0 in)
198124.8 mm (1.0 in)
198217.8 mm (0.7 in)
198333.7 mm (1.3 in)
198416.7 mm (0.7 in)
198518.4 mm (0.7 in)
198625.3 mm (1.0 in)
198720.4 mm (0.8 in)
198861.4 mm (2.4 in)
198939.9 mm (1.6 in)
199020.4 mm (0.8 in)
199127.7 mm (1.1 in)
199229.4 mm (1.2 in)
20129.9 mm (0.39 in)
201332.0 mm (1.3 in)
201439.9 mm (1.6 in)
201529.0 mm (1.1 in)
201625.9 mm (1.0 in)
201738.1 mm (1.5 in)
201822.1 mm (0.9 in)
201927.7 mm (1.1 in)
202018.0 mm (0.7 in)
202137.1 mm (1.5 in)
202299.1 mm (3.9 in)
202327.9 mm (1.1 in)
202431.0 mm (1.2 in)
202524.9 mm (1.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Tommot by year The wettest five days of the year at Tommot, 1936 to 2025. The record is 108.2 mm (4.3 in) in 1988, marked on the chart; the median year is 48.1 mm (1.9 in). 025507510012519401960198020002020Record: 108.2 mm (4.3 in) in 1988
The wettest five days of the year at Tommot, 1936 to 2025. The record is 108.2 mm (4.3 in) in 1988, marked on the chart; the median year is 48.1 mm (1.9 in).
Wettest five days (Rx5day) at Tommot by year
YearWettest five days (Rx5day)
1936n/a
193748.0 mm (1.9 in)
193831.9 mm (1.3 in)
193936.7 mm (1.4 in)
194031.4 mm (1.2 in)
194122.1 mm (0.9 in)
194267.7 mm (2.7 in)
194375.8 mm (3.0 in)
194445.6 mm (1.8 in)
194551.8 mm (2.0 in)
194637.2 mm (1.5 in)
194737.0 mm (1.5 in)
1948101.8 mm (4.0 in)
194969.5 mm (2.7 in)
195035.8 mm (1.4 in)
195161.4 mm (2.4 in)
195244.5 mm (1.8 in)
195350.3 mm (2.0 in)
1954101.5 mm (4.0 in)
195568.9 mm (2.7 in)
195649.1 mm (1.9 in)
195768.3 mm (2.7 in)
195863.7 mm (2.5 in)
195980.7 mm (3.2 in)
196026.2 mm (1.0 in)
196166.8 mm (2.6 in)
196227.4 mm (1.1 in)
196364.5 mm (2.5 in)
196460.6 mm (2.4 in)
196539.3 mm (1.5 in)
196635.9 mm (1.4 in)
196739.4 mm (1.6 in)
196847.1 mm (1.9 in)
196925.9 mm (1.0 in)
197057.4 mm (2.3 in)
197142.3 mm (1.7 in)
197245.9 mm (1.8 in)
197354.5 mm (2.1 in)
197466.8 mm (2.6 in)
197564.6 mm (2.5 in)
197684.8 mm (3.3 in)
197736.4 mm (1.4 in)
197841.3 mm (1.6 in)
197953.3 mm (2.1 in)
198040.9 mm (1.6 in)
198141.9 mm (1.6 in)
198253.9 mm (2.1 in)
198381.0 mm (3.2 in)
198440.8 mm (1.6 in)
198534.9 mm (1.4 in)
198633.9 mm (1.3 in)
198742.9 mm (1.7 in)
1988108.2 mm (4.3 in)
198951.8 mm (2.0 in)
199037.4 mm (1.5 in)
199153.1 mm (2.1 in)
199269.4 mm (2.7 in)
201226.2 mm (1.0 in)
201354.0 mm (2.1 in)
2014105.2 mm (4.1 in)
201536.1 mm (1.4 in)
201655.9 mm (2.2 in)
201783.8 mm (3.3 in)
201837.1 mm (1.5 in)
201932.8 mm (1.3 in)
202029.1 mm (1.1 in)
202155.9 mm (2.2 in)
2022102.1 mm (4.0 in)
202327.9 mm (1.1 in)
202448.1 mm (1.9 in)
202548.0 mm (1.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Tommot by year The longest dry spell of the year at Tommot, 1936 to 2025. The record is 69 days in 1945, marked on the chart; the median year is 25 days. 02040608019401960198020002020Record: 69 days in 1945
The longest dry spell of the year at Tommot, 1936 to 2025. The record is 69 days in 1945, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Tommot by year
YearLongest dry spell (CDD)
1936n/a
193742 days
193818 days
193954 days
194035 days
194168 days
194266 days
194327 days
194450 days
194569 days
194641 days
194750 days
194837 days
194929 days
195054 days
195131 days
195227 days
195322 days
195422 days
195525 days
195635 days
195727 days
195825 days
195924 days
196028 days
196130 days
196223 days
196332 days
196423 days
196527 days
196612 days
196728 days
196834 days
196926 days
197024 days
197120 days
197225 days
197324 days
197441 days
197516 days
197624 days
197719 days
197815 days
197938 days
198026 days
198133 days
198251 days
198318 days
198433 days
198529 days
198627 days
198724 days
198824 days
198917 days
199027 days
199123 days
199221 days
20127 days
201325 days
201421 days
201527 days
20167 days
201712 days
201813 days
201910 days
202010 days
20219 days
202213 days
202310 days
202421 days
202514 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.

Rainfall Return Levels

56 years, 1937 to 2014

A day with at least 27.7 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 70.4 mm (2.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Tommot: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years27.7 mm (1.1 in)
5 years37.5 mm (1.5 in)
10 years44.6 mm (1.8 in)
25 years54.4 mm (2.1 in)
50 years62.1 mm (2.4 in)
100 years70.4 mm (2.8 in)Longer than the 56 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, 56 years of values from 1937 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: 63.7 mm (2.5 in) in 1958; 61.4 mm (2.4 in) in 1988; 52.8 mm (2.1 in) in 1943.

Download the Data

  • Data for Tommot standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Tommot 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).