Sejmchan Weather Records (RSM00025703)
Record envelope, standing records and threshold days for Sejmchan (RSM00025703), Russia, with 90 years of record.
Key Facts for Sejmchan
- Sejmchan (RSM00025703) is a weather station in Russia at 62.92 latitude and 152.42 longitude, 206 m (676 ft) above sea level.
- The station reports from 1936 to 2025, 90 years of record.
- 1,464 records set at Sejmchan still stand.
- Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
- Sejmchan set a daily record low maximum temperature of 10.5 C (50.9 F) on 1 July 2025.
About the Station
- Location: Russia, 62.92 latitude, 152.42 longitude.
- Elevation: 206 m (676 ft).
- Period of record: 1936 to 2025, 90 years.
- Eligible elements: tmax, tmin, prcp, snwd.
Daily Record Envelope and 2026
11 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | -5.9 C (21.4 F) | -59.1 C (-74.4 F) | -25.5 C (-13.9 F) | -51.7 C (-61.1 F) |
| Feb | -7.0 C (19.4 F) | -58.2 C (-72.8 F) | -17.7 C (0.1 F) | -53.4 C (-64.1 F) |
| Mar | 8.7 C (47.7 F) | -53.4 C (-64.1 F) | -4.8 C (23.4 F) | -41.3 C (-42.3 F) |
| Apr | 12.7 C (54.9 F) | -44.7 C (-48.5 F) | 10.7 C (51.3 F) | -28.6 C (-19.5 F) |
| May | 30.7 C (87.3 F) | -27.9 C (-18.2 F) | 30.7 C (87.3 F) | -7.8 C (18.0 F) |
| Jun | 35.2 C (95.4 F) | -6.4 C (20.5 F) | 28.5 C (83.3 F) | -3.1 C (26.4 F) |
| Jul | 36.1 C (97.0 F) | -4.2 C (24.4 F) | 31.3 C (88.3 F) | 2.7 C (36.9 F) |
| Aug | 35.9 C (96.6 F) | -9.0 C (15.8 F) | 29.2 C (84.6 F) | -3.0 C (26.6 F) |
| Sep | 27.8 C (82.0 F) | -19.6 C (-3.3 F) | n/a | n/a |
| Oct | 16.7 C (62.1 F) | -40.1 C (-40.2 F) | n/a | n/a |
| Nov | 6.7 C (44.1 F) | -53.6 C (-64.5 F) | n/a | n/a |
| Dec | 0.9 C (33.6 F) | -56.6 C (-69.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1936 | 23 |
| 1937 | 21 |
| 1938 | 17 |
| 1942 | 36 |
| 1943 | 16 |
| 1944 | 20 |
| 1945 | 12 |
| 1946 | 31 |
| 1947 | 5 |
| 1948 | 22 |
| 1949 | 23 |
| 1950 | 41 |
| 1951 | 20 |
| 1952 | 35 |
| 1953 | 6 |
| 1954 | 22 |
| 1955 | 22 |
| 1956 | 16 |
| 1957 | 22 |
| 1958 | 7 |
| 1959 | 18 |
| 1960 | 10 |
| 1961 | 5 |
| 1962 | 21 |
| 1963 | 19 |
| 1964 | 23 |
| 1965 | 17 |
| 1966 | 26 |
| 1967 | 32 |
| 1968 | 10 |
| 1969 | 20 |
| 1970 | 21 |
| 1971 | 12 |
| 1972 | 14 |
| 1973 | 16 |
| 1974 | 7 |
| 1975 | 8 |
| 1976 | 9 |
| 1977 | 14 |
| 1978 | 18 |
| 1979 | 10 |
| 1980 | 18 |
| 1981 | 19 |
| 1982 | 19 |
| 1983 | 11 |
| 1984 | 22 |
| 1985 | 19 |
| 1986 | 19 |
| 1987 | 6 |
| 1988 | 11 |
| 1989 | 11 |
| 1990 | 16 |
| 1991 | 10 |
| 1992 | 12 |
| 1993 | 12 |
| 1994 | 14 |
| 1995 | 15 |
| 1996 | 28 |
| 1997 | 15 |
| 1998 | 18 |
| 1999 | 8 |
| 2000 | 23 |
| 2001 | 12 |
| 2002 | 14 |
| 2003 | 23 |
| 2004 | 4 |
| 2005 | 8 |
| 2006 | 21 |
| 2007 | 22 |
| 2008 | 16 |
| 2009 | 12 |
| 2010 | 37 |
| 2011 | 21 |
| 2012 | 26 |
| 2013 | 11 |
| 2014 | 8 |
| 2015 | 11 |
| 2016 | 15 |
| 2017 | 17 |
| 2018 | 9 |
| 2019 | 13 |
| 2020 | 13 |
| 2021 | 17 |
| 2022 | 12 |
| 2023 | 19 |
| 2024 | 16 |
| 2025 | 14 |
All-Time Record Progression
7 new records| Date | Kind | Detail |
|---|---|---|
| 1972-01-21 | Record low minimum temperature | Record low minimum temperature -58.7 C (-73.7 F) |
| 1972-01-22 | Record low minimum temperature | Record low minimum temperature -59.1 C (-74.4 F) |
| 1988-07-30 | Record high minimum temperature | Record high minimum temperature 20.3 C (68.5 F) |
| 2000-07-21 | Record high maximum temperature | Record high maximum temperature 35.3 C (95.5 F) |
| 2001-07-26 | Record high maximum temperature | Record high maximum temperature 35.9 C (96.6 F) |
| 2010-07-30 | Record high minimum temperature | Record high minimum temperature 21.8 C (71.2 F) |
| 2011-07-29 | Record high maximum temperature | Record high maximum temperature 36.1 C (97.0 F) |
Wettest Day of Each Month
Jul: 36.7 mm (1.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 15.9 mm (0.6 in) | 29 January 2018 |
| Feb | 14.9 mm (0.6 in) | 8 February 1969 |
| Mar | 11.3 mm (0.4 in) | 29 March 2002 |
| Apr | 17.8 mm (0.7 in) | 25 April 1990 |
| May | 22.9 mm (0.9 in) | 20 May 2000 |
| Jun | 28.7 mm (1.1 in) | 26 June 1968 |
| Jul | 36.7 mm (1.4 in) | 26 July 1951 |
| Aug | 35.8 mm (1.4 in) | 5 August 2006 |
| Sep | 30.0 mm (1.2 in) | 20 September 2022 |
| Oct | 20.1 mm (0.8 in) | 16 October 2024 |
| Nov | 21.7 mm (0.9 in) | 4 November 2014 |
| Dec | 14.9 mm (0.6 in) | 12 December 2010 |
Period of Record Coverage
1936 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1936 | 356 | 97% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 140 | 38% | No |
| 1942 | 364 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 361 | 99% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 363 | 99% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 356 | 98% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 334 | 92% | Yes |
| 2020 | 324 | 89% | No |
| 2021 | 323 | 88% | No |
| 2022 | 323 | 88% | No |
| 2023 | 326 | 89% | No |
| 2024 | 314 | 86% | No |
| 2025 | 221 | 61% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 1 July 2025 | Sejmchan, RU | daily low max | 10.5 C (50.9 F) | 2.4 C (4.3 F) | 0 years | 13 of 100 (Routine) |
| 24 June 2025 | Sejmchan, RU | daily low min (Tie) | -0.7 C (30.7 F) | tie | 28 years | 4 of 100 (Routine) |
| 10 June 2025 | Sejmchan, RU | daily low min | -3.1 C (26.4 F) | 0.3 C (0.5 F) | 0 years | 9 of 100 (Routine) |
| 4 June 2025 | Sejmchan, RU | daily high min (Tie) | 11.4 C (52.5 F) | tie | 15 years | 3 of 100 (Routine) |
| 31 May 2025 | Sejmchan, RU | daily high max | 28.9 C (84.0 F) | 1.8 C (3.2 F) | 52 years | 26 of 100 (Routine) |
| 30 May 2025 | Sejmchan, RU | monthly high max | 30.7 C (87.3 F) | 2.7 C (4.9 F) | 54 years | 39 of 100 (Notable) |
| 8 May 2025 | Sejmchan, RU | daily rain | 6.1 mm (0.24 in) | 0.4 mm (0.02 in) | 52 years | 20 of 100 (Routine) |
| 23 April 2025 | Sejmchan, RU | daily high max | 10.7 C (51.3 F) | 2.1 C (3.8 F) | 8 years | 14 of 100 (Routine) |
| 13 April 2025 | Sejmchan, RU | daily high min | -1.4 C (29.5 F) | 1.6 C (2.9 F) | 12 years | 13 of 100 (Routine) |
| 12 April 2025 | Sejmchan, RU | daily high max | 7.1 C (44.8 F) | 0.2 C (0.4 F) | 24 years | 16 of 100 (Routine) |
| 11 April 2025 | Sejmchan, RU | daily high max | 9.6 C (49.3 F) | 4.1 C (7.4 F) | 35 years | 25 of 100 (Routine) |
| 9 April 2025 | Sejmchan, RU | daily high max | 6.8 C (44.2 F) | 4.7 C (8.5 F) | 6 years | 17 of 100 (Routine) |
| 8 April 2025 | Sejmchan, RU | daily high min | -2.0 C (28.4 F) | 0.1 C (0.2 F) | 71 years | 30 of 100 (Routine) |
| 8 April 2025 | Sejmchan, RU | daily high max | 7.9 C (46.2 F) | 3.3 C (5.9 F) | 34 years | 24 of 100 (Routine) |
| 7 April 2025 | Sejmchan, RU | daily high max | 6.1 C (43.0 F) | 0.5 C (0.9 F) | 71 years | 30 of 100 (Routine) |
| 4 April 2025 | Sejmchan, RU | daily high max | 6.3 C (43.3 F) | 1.0 C (1.8 F) | 7 years | 12 of 100 (Routine) |
| 3 April 2025 | Sejmchan, RU | daily high min | -4.1 C (24.6 F) | 5.5 C (9.9 F) | 18 years | 19 of 100 (Routine) |
| 4 March 2025 | Sejmchan, RU | daily rain | 5.1 mm (0.20 in) | 0.8 mm (0.03 in) | 14 years | 17 of 100 (Routine) |
| 12 February 2025 | Sejmchan, RU | daily rain | 5.1 mm (0.20 in) | 0.6 mm (0.02 in) | 55 years | 20 of 100 (Routine) |
| 13 January 2025 | Sejmchan, RU | daily snow depth (Tie) | 63.0 cm (24.8 in) | tie | 8 years | 1 of 100 (Routine) |
Climate Trend
81 complete years, 1936 to 2023| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1936 | -11.9 C | -1.14 C |
| 1937 | -11.1 C | -0.30 C |
| 1942 | -10.6 C | +0.17 C |
| 1943 | -10.7 C | +0.12 C |
| 1944 | -11.2 C | -0.44 C |
| 1945 | -10.2 C | +0.57 C |
| 1946 | -13.0 C | -2.19 C |
| 1947 | -10.4 C | +0.42 C |
| 1948 | -10.5 C | +0.25 C |
| 1949 | -11.8 C | -1.00 C |
| 1950 | -12.7 C | -1.91 C |
| 1951 | -11.5 C | -0.70 C |
| 1952 | -12.3 C | -1.46 C |
| 1953 | -10.9 C | -0.06 C |
| 1954 | -12.0 C | -1.17 C |
| 1955 | -12.1 C | -1.29 C |
| 1956 | -12.1 C | -1.28 C |
| 1957 | -12.2 C | -1.36 C |
| 1958 | -12.6 C | -1.79 C |
| 1959 | -11.3 C | -0.55 C |
| 1960 | -10.5 C | +0.32 C |
| 1961 | -11.2 C | -0.41 C |
| 1962 | -11.1 C | -0.34 C |
| 1963 | -11.1 C | -0.32 C |
| 1964 | -12.7 C | -1.89 C |
| 1965 | -12.8 C | -2.00 C |
| 1966 | -11.7 C | -0.91 C |
| 1967 | -13.2 C | -2.42 C |
| 1968 | -11.2 C | -0.36 C |
| 1969 | -11.1 C | -0.26 C |
| 1970 | -11.3 C | -0.55 C |
| 1971 | -11.1 C | -0.35 C |
| 1972 | -10.9 C | -0.08 C |
| 1973 | -11.1 C | -0.34 C |
| 1974 | -10.6 C | +0.16 C |
| 1975 | -10.1 C | +0.68 C |
| 1976 | -11.9 C | -1.08 C |
| 1977 | -10.8 C | +0.04 C |
| 1978 | -12.1 C | -1.35 C |
| 1979 | -11.7 C | -0.87 C |
| 1980 | -10.5 C | +0.33 C |
| 1981 | -9.9 C | +0.85 C |
| 1982 | -12.0 C | -1.17 C |
| 1983 | -10.7 C | +0.06 C |
| 1984 | -11.5 C | -0.75 C |
| 1985 | -10.0 C | +0.82 C |
| 1986 | -10.4 C | +0.40 C |
| 1987 | -13.0 C | -2.24 C |
| 1988 | -10.1 C | +0.72 C |
| 1989 | -11.2 C | -0.41 C |
| 1990 | -11.2 C | -0.42 C |
| 1991 | -10.4 C | +0.44 C |
| 1992 | -12.1 C | -1.30 C |
| 1993 | -12.4 C | -1.65 C |
| 1994 | -10.3 C | +0.46 C |
| 1995 | -9.4 C | +1.43 C |
| 1996 | -10.9 C | -0.06 C |
| 1997 | -10.5 C | +0.30 C |
| 1998 | -11.8 C | -0.98 C |
| 1999 | -11.8 C | -1.03 C |
| 2000 | -8.7 C | +2.07 C |
| 2001 | -10.0 C | +0.82 C |
| 2002 | -9.4 C | +1.44 C |
| 2003 | -9.0 C | +1.78 C |
| 2004 | -11.7 C | -0.91 C |
| 2005 | -9.4 C | +1.35 C |
| 2006 | -9.4 C | +1.42 C |
| 2007 | -8.2 C | +2.58 C |
| 2008 | -9.2 C | +1.58 C |
| 2009 | -9.9 C | +0.94 C |
| 2010 | -8.9 C | +1.92 C |
| 2011 | -9.7 C | +1.07 C |
| 2012 | -8.9 C | +1.86 C |
| 2013 | -10.2 C | +0.58 C |
| 2014 | -8.7 C | +2.10 C |
| 2015 | -9.7 C | +1.08 C |
| 2016 | -7.6 C | +3.23 C |
| 2017 | -9.2 C | +1.55 C |
| 2018 | -9.0 C | +1.82 C |
| 2019 | -8.4 C | +2.43 C |
| 2023 | -9.9 C | +0.90 C |
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1936 to 2023. In Fahrenheit: 0.6 F (0.4 to 0.8) per decade. The slope is a straight line fitted to 81 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.2 to 0.4) per decade | 0.6 F (0.4 to 0.8) per decade | 1936 to 2023 | 81 | Rise |
| Mean daily maximum | 0.3 C (0.2 to 0.4) per decade | 0.5 F (0.4 to 0.7) per decade | 1936 to 2023 | 81 | Rise |
| Mean daily minimum | 0.4 C (0.3 to 0.5) per decade | 0.6 F (0.5 to 0.8) per decade | 1936 to 2023 | 81 | Rise |
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
1936 to 2025| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 36.1 C (97.0 F) | 2011 | 32.6 C (90.7 F) | 87 |
| Coldest night (TNn) | -59.1 C (-74.4 F) | 1972 | -53.3 C (-63.9 F) | 87 |
| Wettest day (Rx1day) | 36.7 mm (1.4 in) | 1951 | 20.2 mm (0.8 in) | 87 |
| Wettest five days (Rx5day) | 81.0 mm (3.2 in) | 2009 | 33.4 mm (1.3 in) | 87 |
| Longest dry spell (CDD) | 69 days | 1943 | 33 days | 87 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1936 | 33.1 C (91.6 F) |
| 1937 | 29.7 C (85.5 F) |
| 1938 | 8.5 C (47.3 F) |
| 1942 | 33.4 C (92.1 F) |
| 1943 | 32.8 C (91.0 F) |
| 1944 | 29.6 C (85.3 F) |
| 1945 | 33.7 C (92.7 F) |
| 1946 | 34.6 C (94.3 F) |
| 1947 | 26.3 C (79.3 F) |
| 1948 | 32.0 C (89.6 F) |
| 1949 | 35.2 C (95.4 F) |
| 1950 | 29.8 C (85.6 F) |
| 1951 | 35.1 C (95.2 F) |
| 1952 | 33.5 C (92.3 F) |
| 1953 | 32.8 C (91.0 F) |
| 1954 | 32.6 C (90.7 F) |
| 1955 | 29.9 C (85.8 F) |
| 1956 | 34.4 C (93.9 F) |
| 1957 | 35.0 C (95.0 F) |
| 1958 | 30.0 C (86.0 F) |
| 1959 | 31.2 C (88.2 F) |
| 1960 | 31.1 C (88.0 F) |
| 1961 | 31.7 C (89.1 F) |
| 1962 | 30.5 C (86.9 F) |
| 1963 | 30.5 C (86.9 F) |
| 1964 | 30.6 C (87.1 F) |
| 1965 | 30.4 C (86.7 F) |
| 1966 | 33.0 C (91.4 F) |
| 1967 | 31.8 C (89.2 F) |
| 1968 | 28.2 C (82.8 F) |
| 1969 | 30.9 C (87.6 F) |
| 1970 | 32.5 C (90.5 F) |
| 1971 | 32.3 C (90.1 F) |
| 1972 | 32.3 C (90.1 F) |
| 1973 | 33.9 C (93.0 F) |
| 1974 | 32.2 C (90.0 F) |
| 1975 | 33.3 C (91.9 F) |
| 1976 | 34.0 C (93.2 F) |
| 1977 | 31.7 C (89.1 F) |
| 1978 | 28.4 C (83.1 F) |
| 1979 | 26.4 C (79.5 F) |
| 1980 | 32.9 C (91.2 F) |
| 1981 | 33.5 C (92.3 F) |
| 1982 | 31.4 C (88.5 F) |
| 1983 | 31.4 C (88.5 F) |
| 1984 | 31.8 C (89.2 F) |
| 1985 | 29.3 C (84.7 F) |
| 1986 | 32.5 C (90.5 F) |
| 1987 | 30.8 C (87.4 F) |
| 1988 | 35.2 C (95.4 F) |
| 1989 | 32.9 C (91.2 F) |
| 1990 | 35.1 C (95.2 F) |
| 1991 | 35.0 C (95.0 F) |
| 1992 | 30.0 C (86.0 F) |
| 1993 | 34.3 C (93.7 F) |
| 1994 | 31.1 C (88.0 F) |
| 1995 | 31.1 C (88.0 F) |
| 1996 | 33.4 C (92.1 F) |
| 1997 | 29.6 C (85.3 F) |
| 1998 | 33.9 C (93.0 F) |
| 1999 | 33.6 C (92.5 F) |
| 2000 | 35.3 C (95.5 F) |
| 2001 | 35.9 C (96.6 F) |
| 2002 | 34.2 C (93.6 F) |
| 2003 | 35.8 C (96.4 F) |
| 2004 | 31.4 C (88.5 F) |
| 2005 | 33.2 C (91.8 F) |
| 2006 | 35.0 C (95.0 F) |
| 2007 | 32.3 C (90.1 F) |
| 2008 | 35.6 C (96.1 F) |
| 2009 | 34.7 C (94.5 F) |
| 2010 | 35.9 C (96.6 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 35.0 C (95.0 F) |
| 2013 | 32.0 C (89.6 F) |
| 2014 | 31.8 C (89.2 F) |
| 2015 | 33.6 C (92.5 F) |
| 2016 | 34.6 C (94.3 F) |
| 2017 | 31.8 C (89.2 F) |
| 2018 | 34.2 C (93.6 F) |
| 2019 | 33.3 C (91.9 F) |
| 2020 | 31.5 C (88.7 F) |
| 2021 | 33.2 C (91.8 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 35.0 C (95.0 F) |
| 2024 | 30.6 C (87.1 F) |
| 2025 | 31.3 C (88.3 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1936 | -55.2 C (-67.4 F) |
| 1937 | -54.8 C (-66.6 F) |
| 1938 | -54.0 C (-65.2 F) |
| 1942 | -54.3 C (-65.7 F) |
| 1943 | -52.5 C (-62.5 F) |
| 1944 | -56.9 C (-70.4 F) |
| 1945 | -58.1 C (-72.6 F) |
| 1946 | -58.2 C (-72.8 F) |
| 1947 | -54.8 C (-66.6 F) |
| 1948 | -56.2 C (-69.2 F) |
| 1949 | -54.8 C (-66.6 F) |
| 1950 | -56.3 C (-69.3 F) |
| 1951 | -55.4 C (-67.7 F) |
| 1952 | -55.9 C (-68.6 F) |
| 1953 | -53.3 C (-63.9 F) |
| 1954 | -57.6 C (-71.7 F) |
| 1955 | -52.7 C (-62.9 F) |
| 1956 | -52.7 C (-62.9 F) |
| 1957 | -54.8 C (-66.6 F) |
| 1958 | -55.0 C (-67.0 F) |
| 1959 | -53.4 C (-64.1 F) |
| 1960 | -53.3 C (-63.9 F) |
| 1961 | -52.4 C (-62.3 F) |
| 1962 | -52.3 C (-62.1 F) |
| 1963 | -52.0 C (-61.6 F) |
| 1964 | -56.6 C (-69.9 F) |
| 1965 | -57.4 C (-71.3 F) |
| 1966 | -56.6 C (-69.9 F) |
| 1967 | -55.9 C (-68.6 F) |
| 1968 | -54.4 C (-65.9 F) |
| 1969 | -58.2 C (-72.8 F) |
| 1970 | -53.2 C (-63.8 F) |
| 1971 | -57.2 C (-71.0 F) |
| 1972 | -59.1 C (-74.4 F) |
| 1973 | -56.4 C (-69.5 F) |
| 1974 | -52.7 C (-62.9 F) |
| 1975 | -52.6 C (-62.7 F) |
| 1976 | -51.6 C (-60.9 F) |
| 1977 | -54.8 C (-66.6 F) |
| 1978 | -55.7 C (-68.3 F) |
| 1979 | -53.5 C (-64.3 F) |
| 1980 | -50.3 C (-58.5 F) |
| 1981 | -52.4 C (-62.3 F) |
| 1982 | -57.9 C (-72.2 F) |
| 1983 | -52.1 C (-61.8 F) |
| 1984 | -55.2 C (-67.4 F) |
| 1985 | -49.6 C (-57.3 F) |
| 1986 | -52.8 C (-63.0 F) |
| 1987 | -52.7 C (-62.9 F) |
| 1988 | -51.8 C (-61.2 F) |
| 1989 | -52.4 C (-62.3 F) |
| 1990 | -55.3 C (-67.5 F) |
| 1991 | -52.0 C (-61.6 F) |
| 1992 | -51.5 C (-60.7 F) |
| 1993 | -53.5 C (-64.3 F) |
| 1994 | -54.1 C (-65.4 F) |
| 1995 | -52.8 C (-63.0 F) |
| 1996 | -54.3 C (-65.7 F) |
| 1997 | -53.2 C (-63.8 F) |
| 1998 | -51.7 C (-61.1 F) |
| 1999 | -53.2 C (-63.8 F) |
| 2000 | -54.6 C (-66.3 F) |
| 2001 | -52.2 C (-62.0 F) |
| 2002 | -55.4 C (-67.7 F) |
| 2003 | -53.6 C (-64.5 F) |
| 2004 | -51.6 C (-60.9 F) |
| 2005 | -50.5 C (-58.9 F) |
| 2006 | -50.6 C (-59.1 F) |
| 2007 | -49.5 C (-57.1 F) |
| 2008 | -54.7 C (-66.5 F) |
| 2009 | -53.6 C (-64.5 F) |
| 2010 | -51.6 C (-60.9 F) |
| 2011 | -52.0 C (-61.6 F) |
| 2012 | -53.1 C (-63.6 F) |
| 2013 | -51.1 C (-60.0 F) |
| 2014 | -51.7 C (-61.1 F) |
| 2015 | -50.6 C (-59.1 F) |
| 2016 | -50.4 C (-58.7 F) |
| 2017 | -52.6 C (-62.7 F) |
| 2018 | -52.5 C (-62.5 F) |
| 2019 | -50.9 C (-59.6 F) |
| 2020 | -51.4 C (-60.5 F) |
| 2021 | -52.8 C (-63.0 F) |
| 2022 | -54.2 C (-65.6 F) |
| 2023 | -53.5 C (-64.3 F) |
| 2024 | -53.2 C (-63.8 F) |
| 2025 | -53.4 C (-64.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1936 | 13.0 mm (0.5 in) |
| 1937 | 18.5 mm (0.7 in) |
| 1938 | 7.8 mm (0.31 in) |
| 1942 | 24.8 mm (1.0 in) |
| 1943 | 23.3 mm (0.9 in) |
| 1944 | 21.1 mm (0.8 in) |
| 1945 | 12.9 mm (0.5 in) |
| 1946 | 24.8 mm (1.0 in) |
| 1947 | 23.1 mm (0.9 in) |
| 1948 | 12.1 mm (0.5 in) |
| 1949 | 14.3 mm (0.6 in) |
| 1950 | 16.0 mm (0.6 in) |
| 1951 | 36.7 mm (1.4 in) |
| 1952 | 18.6 mm (0.7 in) |
| 1953 | 21.0 mm (0.8 in) |
| 1954 | 12.9 mm (0.5 in) |
| 1955 | 29.9 mm (1.2 in) |
| 1956 | 12.8 mm (0.5 in) |
| 1957 | 23.3 mm (0.9 in) |
| 1958 | 16.3 mm (0.6 in) |
| 1959 | 10.2 mm (0.4 in) |
| 1960 | 30.3 mm (1.2 in) |
| 1961 | 11.5 mm (0.5 in) |
| 1962 | 24.2 mm (1.0 in) |
| 1963 | 14.3 mm (0.6 in) |
| 1964 | 13.1 mm (0.5 in) |
| 1965 | 10.7 mm (0.4 in) |
| 1966 | 23.1 mm (0.9 in) |
| 1967 | 16.1 mm (0.6 in) |
| 1968 | 28.7 mm (1.1 in) |
| 1969 | 16.9 mm (0.7 in) |
| 1970 | 16.2 mm (0.6 in) |
| 1971 | 11.4 mm (0.4 in) |
| 1972 | 24.5 mm (1.0 in) |
| 1973 | 14.1 mm (0.6 in) |
| 1974 | 12.1 mm (0.5 in) |
| 1975 | 27.1 mm (1.1 in) |
| 1976 | 19.8 mm (0.8 in) |
| 1977 | 20.2 mm (0.8 in) |
| 1978 | 13.5 mm (0.5 in) |
| 1979 | 20.3 mm (0.8 in) |
| 1980 | 16.2 mm (0.6 in) |
| 1981 | 11.2 mm (0.4 in) |
| 1982 | 22.4 mm (0.9 in) |
| 1983 | 13.8 mm (0.5 in) |
| 1984 | 26.1 mm (1.0 in) |
| 1985 | 23.7 mm (0.9 in) |
| 1986 | 13.7 mm (0.5 in) |
| 1987 | 22.0 mm (0.9 in) |
| 1988 | 29.2 mm (1.1 in) |
| 1989 | 21.4 mm (0.8 in) |
| 1990 | 17.8 mm (0.7 in) |
| 1991 | 10.1 mm (0.4 in) |
| 1992 | 26.1 mm (1.0 in) |
| 1993 | 16.6 mm (0.7 in) |
| 1994 | 27.2 mm (1.1 in) |
| 1995 | 12.9 mm (0.5 in) |
| 1996 | 16.0 mm (0.6 in) |
| 1997 | 17.1 mm (0.7 in) |
| 1998 | 28.6 mm (1.1 in) |
| 1999 | 15.6 mm (0.6 in) |
| 2000 | 22.9 mm (0.9 in) |
| 2001 | 22.7 mm (0.9 in) |
| 2002 | 21.3 mm (0.8 in) |
| 2003 | 18.2 mm (0.7 in) |
| 2004 | 20.6 mm (0.8 in) |
| 2005 | 17.4 mm (0.7 in) |
| 2006 | 35.8 mm (1.4 in) |
| 2007 | 20.5 mm (0.8 in) |
| 2008 | 23.1 mm (0.9 in) |
| 2009 | 33.5 mm (1.3 in) |
| 2010 | 16.8 mm (0.7 in) |
| 2011 | 25.0 mm (1.0 in) |
| 2012 | 26.0 mm (1.0 in) |
| 2013 | 29.1 mm (1.1 in) |
| 2014 | 25.8 mm (1.0 in) |
| 2015 | 20.0 mm (0.8 in) |
| 2016 | 17.9 mm (0.7 in) |
| 2017 | 20.8 mm (0.8 in) |
| 2018 | 30.1 mm (1.2 in) |
| 2019 | 19.1 mm (0.8 in) |
| 2020 | 19.1 mm (0.8 in) |
| 2021 | 23.9 mm (0.9 in) |
| 2022 | 30.0 mm (1.2 in) |
| 2023 | 30.0 mm (1.2 in) |
| 2024 | 23.9 mm (0.9 in) |
| 2025 | 18.0 mm (0.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1936 | 15.8 mm (0.6 in) |
| 1937 | 27.6 mm (1.1 in) |
| 1938 | 13.8 mm (0.5 in) |
| 1942 | 37.1 mm (1.5 in) |
| 1943 | 60.9 mm (2.4 in) |
| 1944 | 36.9 mm (1.5 in) |
| 1945 | 24.6 mm (1.0 in) |
| 1946 | 46.4 mm (1.8 in) |
| 1947 | 48.7 mm (1.9 in) |
| 1948 | 21.1 mm (0.8 in) |
| 1949 | 19.5 mm (0.8 in) |
| 1950 | 38.8 mm (1.5 in) |
| 1951 | 41.7 mm (1.6 in) |
| 1952 | 22.6 mm (0.9 in) |
| 1953 | 32.4 mm (1.3 in) |
| 1954 | 25.1 mm (1.0 in) |
| 1955 | 60.5 mm (2.4 in) |
| 1956 | 24.5 mm (1.0 in) |
| 1957 | 24.5 mm (1.0 in) |
| 1958 | 26.1 mm (1.0 in) |
| 1959 | 26.0 mm (1.0 in) |
| 1960 | 34.0 mm (1.3 in) |
| 1961 | 19.6 mm (0.8 in) |
| 1962 | 33.0 mm (1.3 in) |
| 1963 | 23.7 mm (0.9 in) |
| 1964 | 21.7 mm (0.9 in) |
| 1965 | 20.1 mm (0.8 in) |
| 1966 | 43.7 mm (1.7 in) |
| 1967 | 32.2 mm (1.3 in) |
| 1968 | 48.2 mm (1.9 in) |
| 1969 | 31.7 mm (1.2 in) |
| 1970 | 29.2 mm (1.1 in) |
| 1971 | 21.5 mm (0.8 in) |
| 1972 | 42.3 mm (1.7 in) |
| 1973 | 27.1 mm (1.1 in) |
| 1974 | 22.8 mm (0.9 in) |
| 1975 | 65.6 mm (2.6 in) |
| 1976 | 28.5 mm (1.1 in) |
| 1977 | 35.3 mm (1.4 in) |
| 1978 | 35.0 mm (1.4 in) |
| 1979 | 38.3 mm (1.5 in) |
| 1980 | 27.0 mm (1.1 in) |
| 1981 | 19.8 mm (0.8 in) |
| 1982 | 31.8 mm (1.3 in) |
| 1983 | 23.4 mm (0.9 in) |
| 1984 | 38.2 mm (1.5 in) |
| 1985 | 45.7 mm (1.8 in) |
| 1986 | 20.4 mm (0.8 in) |
| 1987 | 37.7 mm (1.5 in) |
| 1988 | 32.9 mm (1.3 in) |
| 1989 | 36.7 mm (1.4 in) |
| 1990 | 23.0 mm (0.9 in) |
| 1991 | 38.4 mm (1.5 in) |
| 1992 | 30.8 mm (1.2 in) |
| 1993 | 24.5 mm (1.0 in) |
| 1994 | 38.5 mm (1.5 in) |
| 1995 | 31.0 mm (1.2 in) |
| 1996 | 27.8 mm (1.1 in) |
| 1997 | 32.4 mm (1.3 in) |
| 1998 | 65.9 mm (2.6 in) |
| 1999 | 27.5 mm (1.1 in) |
| 2000 | 31.4 mm (1.2 in) |
| 2001 | 44.2 mm (1.7 in) |
| 2002 | 34.3 mm (1.4 in) |
| 2003 | 33.7 mm (1.3 in) |
| 2004 | 48.2 mm (1.9 in) |
| 2005 | 31.4 mm (1.2 in) |
| 2006 | 46.8 mm (1.8 in) |
| 2007 | 44.7 mm (1.8 in) |
| 2008 | 28.9 mm (1.1 in) |
| 2009 | 81.0 mm (3.2 in) |
| 2010 | 43.0 mm (1.7 in) |
| 2011 | 42.7 mm (1.7 in) |
| 2012 | 44.7 mm (1.8 in) |
| 2013 | 70.9 mm (2.8 in) |
| 2014 | 65.1 mm (2.6 in) |
| 2015 | 21.9 mm (0.9 in) |
| 2016 | 33.4 mm (1.3 in) |
| 2017 | 43.5 mm (1.7 in) |
| 2018 | 54.8 mm (2.2 in) |
| 2019 | 43.2 mm (1.7 in) |
| 2020 | 23.1 mm (0.9 in) |
| 2021 | 43.7 mm (1.7 in) |
| 2022 | 37.1 mm (1.5 in) |
| 2023 | 47.5 mm (1.9 in) |
| 2024 | 42.4 mm (1.7 in) |
| 2025 | 33.5 mm (1.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1936 | 45 days |
| 1937 | 54 days |
| 1938 | 40 days |
| 1942 | 43 days |
| 1943 | 69 days |
| 1944 | 28 days |
| 1945 | 39 days |
| 1946 | 52 days |
| 1947 | 31 days |
| 1948 | 30 days |
| 1949 | 40 days |
| 1950 | 66 days |
| 1951 | 43 days |
| 1952 | 33 days |
| 1953 | 43 days |
| 1954 | 41 days |
| 1955 | 33 days |
| 1956 | 38 days |
| 1957 | 30 days |
| 1958 | 46 days |
| 1959 | 37 days |
| 1960 | 25 days |
| 1961 | 24 days |
| 1962 | 23 days |
| 1963 | 47 days |
| 1964 | 55 days |
| 1965 | 29 days |
| 1966 | 26 days |
| 1967 | 13 days |
| 1968 | 32 days |
| 1969 | 62 days |
| 1970 | 25 days |
| 1971 | 30 days |
| 1972 | 35 days |
| 1973 | 44 days |
| 1974 | 55 days |
| 1975 | 32 days |
| 1976 | 54 days |
| 1977 | 46 days |
| 1978 | 38 days |
| 1979 | 45 days |
| 1980 | 36 days |
| 1981 | 33 days |
| 1982 | 28 days |
| 1983 | 67 days |
| 1984 | 63 days |
| 1985 | 31 days |
| 1986 | 27 days |
| 1987 | 22 days |
| 1988 | 45 days |
| 1989 | 50 days |
| 1990 | 23 days |
| 1991 | 62 days |
| 1992 | 19 days |
| 1993 | 52 days |
| 1994 | 53 days |
| 1995 | 25 days |
| 1996 | 29 days |
| 1997 | 44 days |
| 1998 | 48 days |
| 1999 | 40 days |
| 2000 | 28 days |
| 2001 | 27 days |
| 2002 | 32 days |
| 2003 | 28 days |
| 2004 | 35 days |
| 2005 | 39 days |
| 2006 | 27 days |
| 2007 | 27 days |
| 2008 | 19 days |
| 2009 | 42 days |
| 2010 | 26 days |
| 2011 | 25 days |
| 2012 | 20 days |
| 2013 | 24 days |
| 2014 | 28 days |
| 2015 | 57 days |
| 2016 | 37 days |
| 2017 | 58 days |
| 2018 | 23 days |
| 2019 | 45 days |
| 2020 | 29 days |
| 2021 | 23 days |
| 2022 | 26 days |
| 2023 | 19 days |
| 2024 | 20 days |
| 2025 | 18 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
81 years with a frostAcross 81 years with a frost, the median last spring frost at Sejmchan falls on 9 June and the median first autumn frost on 5 August, which leaves a median of 56 days between them.
In 1991 to 2023 the median growing season was 59 days. That is 9 days more than in 1936 to 1969.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1936 to 1969) | Recent period (1991 to 2023) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 9 June | 11 June | 8 June | 3 days earlier | -0.4 days per decade |
| First autumn frost | 5 August | 1 August | 13 August | 12 days later | +0.7 days per decade |
| Growing days | 56 days | 50 days | 59 days | 9 days more | +1.1 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
80 years, 1936 to 2019A day with at least 19.5 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 37.4 mm (1.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 19.5 mm (0.8 in) | |
| 5 years | 25.3 mm (1.0 in) | |
| 10 years | 28.7 mm (1.1 in) | |
| 25 years | 32.5 mm (1.3 in) | |
| 50 years | 35.1 mm (1.4 in) | |
| 100 years | 37.4 mm (1.5 in) | Longer than the 80 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, 80 years of values from 1936 to 2019.
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: 36.7 mm (1.4 in) in 1951; 35.8 mm (1.4 in) in 2006; 33.5 mm (1.3 in) in 2009.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2006 to 2023 against 1961 to 1990Over 2006 to 2023, Sejmchan had a mean temperature of -9.1 C (15.6 F) and 347.5 mm (13.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Isit (Russia, 1,429 km away), Viljujsk (Russia, 1,524 km away) and Yugarenok (Russia, 858 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Isit | Russia | 1,429 km (888 mi) | -8.0 C (17.6 F) | 291.1 mm (11.5 in) | 1.52 |
| Viljujsk | Russia | 1,524 km (947 mi) | -9.1 C (15.7 F) | 255.1 mm (10.0 in) | 1.52 |
| Yugarenok | Russia | 858 km (533 mi) | -9.8 C (14.4 F) | 360.7 mm (14.2 in) | 1.65 |
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
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).