Aldan Weather Records (RSM00031004)
Record envelope, standing records and threshold days for Aldan (RSM00031004), Russia, with 89 years of record.
Key Facts for Aldan
- Aldan (RSM00031004) is a weather station in Russia at 58.62 latitude and 125.03 longitude, 678 m (2,224 ft) above sea level.
- The station reports from 1937 to 2025, 89 years of record.
- 1,464 records set at Aldan still stand.
- Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
- Aldan set a daily record low maximum temperature of 10.9 C (51.6 F) on 9 August 2025.
About the Station
- Location: Russia, 58.62 latitude, 125.03 longitude.
- Elevation: 678 m (2,224 ft).
- Period of record: 1937 to 2025, 89 years.
- Eligible elements: tmax, tmin, prcp, snwd.
Daily Record Envelope and 2026
2 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | -2.5 C (27.5 F) | -50.0 C (-58.0 F) | -7.5 C (18.5 F) | -43.7 C (-46.7 F) |
| Feb | -1.0 C (30.2 F) | -46.6 C (-51.9 F) | -9.3 C (15.3 F) | -38.2 C (-36.8 F) |
| Mar | 9.1 C (48.4 F) | -42.0 C (-43.6 F) | 0.2 C (32.4 F) | -35.6 C (-32.1 F) |
| Apr | 18.8 C (65.8 F) | -31.7 C (-25.1 F) | 8.2 C (46.8 F) | -18.0 C (-0.4 F) |
| May | 27.8 C (82.0 F) | -16.0 C (3.2 F) | 27.2 C (81.0 F) | -5.1 C (22.8 F) |
| Jun | 34.3 C (93.7 F) | -5.9 C (21.4 F) | 31.2 C (88.2 F) | -2.3 C (27.9 F) |
| Jul | 36.5 C (97.7 F) | -0.8 C (30.6 F) | 27.9 C (82.2 F) | 7.1 C (44.8 F) |
| Aug | 35.2 C (95.4 F) | -4.4 C (24.1 F) | 24.0 C (75.2 F) | 3.9 C (39.0 F) |
| Sep | 25.8 C (78.4 F) | -16.1 C (3.0 F) | n/a | n/a |
| Oct | 16.7 C (62.1 F) | -30.3 C (-22.5 F) | n/a | n/a |
| Nov | 6.1 C (43.0 F) | -44.9 C (-48.8 F) | n/a | n/a |
| Dec | -0.6 C (30.9 F) | -48.3 C (-54.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1937 | 12 |
| 1938 | 8 |
| 1939 | 24 |
| 1940 | 12 |
| 1941 | 14 |
| 1942 | 11 |
| 1943 | 9 |
| 1944 | 14 |
| 1945 | 10 |
| 1946 | 14 |
| 1947 | 12 |
| 1948 | 10 |
| 1949 | 22 |
| 1950 | 19 |
| 1951 | 18 |
| 1952 | 36 |
| 1953 | 14 |
| 1954 | 20 |
| 1955 | 18 |
| 1956 | 14 |
| 1957 | 13 |
| 1958 | 20 |
| 1959 | 11 |
| 1960 | 10 |
| 1961 | 10 |
| 1962 | 13 |
| 1963 | 12 |
| 1964 | 17 |
| 1965 | 23 |
| 1966 | 21 |
| 1967 | 28 |
| 1968 | 39 |
| 1969 | 34 |
| 1970 | 20 |
| 1971 | 22 |
| 1972 | 19 |
| 1973 | 7 |
| 1974 | 17 |
| 1975 | 13 |
| 1976 | 5 |
| 1977 | 14 |
| 1978 | 22 |
| 1979 | 28 |
| 1980 | 14 |
| 1981 | 15 |
| 1982 | 16 |
| 1983 | 25 |
| 1984 | 8 |
| 1985 | 17 |
| 1986 | 21 |
| 1987 | 29 |
| 1988 | 25 |
| 1989 | 22 |
| 1990 | 31 |
| 1991 | 10 |
| 1992 | 20 |
| 1993 | 16 |
| 1994 | 19 |
| 1995 | 8 |
| 1996 | 14 |
| 1997 | 19 |
| 1998 | 12 |
| 1999 | 19 |
| 2000 | 11 |
| 2001 | 22 |
| 2002 | 33 |
| 2003 | 17 |
| 2004 | 23 |
| 2005 | 11 |
| 2006 | 4 |
| 2007 | 14 |
| 2008 | 24 |
| 2009 | 2 |
| 2010 | 3 |
| 2011 | 15 |
| 2012 | 21 |
| 2013 | 9 |
| 2014 | 32 |
| 2015 | 21 |
| 2016 | 11 |
| 2017 | 11 |
| 2018 | 11 |
| 2019 | 9 |
| 2020 | 18 |
| 2021 | 18 |
| 2022 | 2 |
| 2023 | 18 |
| 2024 | 6 |
| 2025 | 9 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1969-08-03 | Record high maximum temperature | Record high maximum temperature 35.2 C (95.4 F) |
| 2017-07-04 | Record high minimum temperature | Record high minimum temperature 22.7 C (72.9 F) |
| 2017-09-07 | Record daily precipitation | Record daily precipitation 80.8 mm (3.2 in) |
| 2019-06-12 | Record daily precipitation | Record daily precipitation 87.9 mm (3.5 in) |
| 2020-05-03 | Record daily precipitation | Record daily precipitation 99.3 mm (3.9 in) |
| 2021-07-03 | Record high maximum temperature | Record high maximum temperature 36.5 C (97.7 F) |
| 2023-01-19 | Record low minimum temperature | Record low minimum temperature -49.6 C (-57.3 F) |
| 2023-01-20 | Record low minimum temperature | Record low minimum temperature -50.0 C (-58.0 F) |
| 2025-03-21 | Record snow depth | Record snow depth 129.0 cm (50.8 in) |
Wettest Day of Each Month
May: 99.3 mm (3.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 10.7 mm (0.4 in) | 10 January 1988 |
| Feb | 12.5 mm (0.5 in) | 20 February 1999 |
| Mar | 23.1 mm (0.9 in) | 20 March 2025 |
| Apr | 25.6 mm (1.0 in) | 18 April 1957 |
| May | 99.3 mm (3.9 in) | 3 May 2020 |
| Jun | 87.9 mm (3.5 in) | 12 June 2019 |
| Jul | 64.1 mm (2.5 in) | 26 July 2010 |
| Aug | 68.4 mm (2.7 in) | 11 August 1988 |
| Sep | 80.8 mm (3.2 in) | 7 September 2017 |
| Oct | 38.4 mm (1.5 in) | 1 October 2009 |
| Nov | 18.4 mm (0.7 in) | 10 November 2006 |
| Dec | 11.5 mm (0.5 in) | 22 December 1999 |
Period of Record Coverage
1937 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 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 | 274 | 75% | No |
| 1951 | 337 | 92% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 364 | 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 | 365 | 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 | 345 | 94% | 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 | 365 | 100% | 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 | 300 | 82% | No |
| 2020 | 298 | 81% | No |
| 2021 | 283 | 78% | No |
| 2022 | 320 | 88% | No |
| 2023 | 286 | 78% | No |
| 2024 | 295 | 81% | No |
| 2025 | 211 | 58% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 9 August 2025 | Aldan, RU | daily low max | 10.9 C (51.6 F) | 0.1 C (0.2 F) | 26 years | 15 of 100 (Routine) |
| 8 August 2025 | Aldan, RU | daily low max | 7.6 C (45.7 F) | 2.6 C (4.7 F) | 40 years | 24 of 100 (Routine) |
| 17 June 2025 | Aldan, RU | daily low min | -2.3 C (27.9 F) | 1.8 C (3.2 F) | 51 years | 27 of 100 (Routine) |
| 17 May 2025 | Aldan, RU | daily low max | 1.6 C (34.9 F) | 0.2 C (0.4 F) | 71 years | 29 of 100 (Routine) |
| 20 April 2025 | Aldan, RU | daily high min | 1.7 C (35.1 F) | 0.1 C (0.2 F) | 36 years | 19 of 100 (Routine) |
| 18 April 2025 | Aldan, RU | daily snow depth (Tie) | 104.9 cm (41.3 in) | tie | 4 years | 1 of 100 (Routine) |
| 17 April 2025 | Aldan, RU | daily snow depth | 108.0 cm (42.5 in) | 2.1 cm (0.8 in) | 7 years | 7 of 100 (Routine) |
| 16 April 2025 | Aldan, RU | daily snow depth | 109.0 cm (42.9 in) | 7.9 cm (3.1 in) | 4 years | 8 of 100 (Routine) |
| 15 April 2025 | Aldan, RU | daily snow depth | 112.0 cm (44.1 in) | 8.9 cm (3.5 in) | 7 years | 9 of 100 (Routine) |
| 13 April 2025 | Aldan, RU | daily snow depth | 118.1 cm (46.5 in) | 8.1 cm (3.2 in) | 8 years | 9 of 100 (Routine) |
| 12 April 2025 | Aldan, RU | daily snow depth | 125.0 cm (49.2 in) | 11.0 cm (4.3 in) | 8 years | 10 of 100 (Routine) |
| 10 April 2025 | Aldan, RU | daily rain | 21.1 mm (0.8 in) | 5.1 mm (0.20 in) | 4 years | 20 of 100 (Routine) |
| 2 April 2025 | Aldan, RU | daily high max | 5.4 C (41.7 F) | 0.1 C (0.2 F) | 72 years | 29 of 100 (Routine) |
| 26 March 2025 | Aldan, RU | daily snow depth (Tie) | 112.0 cm (44.1 in) | tie | 7 years | 1 of 100 (Routine) |
| 24 March 2025 | Aldan, RU | daily snow depth | 111.0 cm (43.7 in) | 5.1 cm (2.0 in) | 8 years | 10 of 100 (Routine) |
| 23 March 2025 | Aldan, RU | daily snow depth (Tie) | 116.1 cm (45.7 in) | tie | 7 years | 1 of 100 (Routine) |
| 22 March 2025 | Aldan, RU | daily snow depth | 119.9 cm (47.2 in) | 4.8 cm (1.9 in) | 7 years | 9 of 100 (Routine) |
| 21 March 2025 | Aldan, RU | all-time snow depth | 129.0 cm (50.8 in) | 2.0 cm (0.8 in) | 8 years | 28 of 100 (Routine) |
| 20 March 2025 | Aldan, RU | monthly rain | 23.1 mm (0.9 in) | 9.2 mm (0.36 in) | 41 years | 20 of 100 (Routine) |
| 19 March 2025 | Aldan, RU | daily rain | 5.1 mm (0.20 in) | 1.2 mm (0.05 in) | 11 years | 17 of 100 (Routine) |
Climate Trend
79 complete years, 1937 to 2018| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1937 | -6.8 C | -1.00 C |
| 1938 | -5.4 C | +0.38 C |
| 1939 | -5.0 C | +0.85 C |
| 1940 | -7.1 C | -1.33 C |
| 1941 | -6.7 C | -0.94 C |
| 1942 | -7.0 C | -1.16 C |
| 1943 | -4.9 C | +0.95 C |
| 1944 | -5.8 C | -0.02 C |
| 1945 | -6.1 C | -0.32 C |
| 1946 | -7.2 C | -1.43 C |
| 1947 | -6.6 C | -0.81 C |
| 1948 | -4.1 C | +1.67 C |
| 1949 | -4.7 C | +1.12 C |
| 1952 | -8.4 C | -2.55 C |
| 1953 | -5.7 C | +0.12 C |
| 1954 | -6.1 C | -0.33 C |
| 1955 | -6.9 C | -1.11 C |
| 1956 | -7.4 C | -1.56 C |
| 1957 | -6.1 C | -0.29 C |
| 1958 | -6.2 C | -0.38 C |
| 1959 | -4.9 C | +0.94 C |
| 1960 | -7.2 C | -1.36 C |
| 1961 | -6.1 C | -0.31 C |
| 1962 | -5.3 C | +0.49 C |
| 1963 | -5.2 C | +0.56 C |
| 1964 | -6.2 C | -0.38 C |
| 1965 | -7.8 C | -1.98 C |
| 1966 | -7.8 C | -2.01 C |
| 1967 | -5.2 C | +0.63 C |
| 1968 | -5.2 C | +0.61 C |
| 1969 | -8.1 C | -2.29 C |
| 1970 | -6.6 C | -0.75 C |
| 1971 | -5.4 C | +0.41 C |
| 1972 | -6.8 C | -1.01 C |
| 1973 | -5.2 C | +0.61 C |
| 1974 | -6.7 C | -0.93 C |
| 1975 | -4.2 C | +1.63 C |
| 1976 | -6.7 C | -0.86 C |
| 1977 | -6.9 C | -1.11 C |
| 1978 | -5.4 C | +0.42 C |
| 1979 | -6.8 C | -0.96 C |
| 1980 | -6.6 C | -0.77 C |
| 1981 | -5.7 C | +0.06 C |
| 1982 | -6.0 C | -0.18 C |
| 1983 | -4.7 C | +1.10 C |
| 1984 | -6.4 C | -0.59 C |
| 1985 | -6.3 C | -0.48 C |
| 1986 | -5.4 C | +0.44 C |
| 1987 | -7.7 C | -1.85 C |
| 1988 | -4.6 C | +1.25 C |
| 1989 | -4.4 C | +1.43 C |
| 1990 | -3.8 C | +1.98 C |
| 1991 | -5.1 C | +0.75 C |
| 1993 | -4.7 C | +1.14 C |
| 1994 | -6.3 C | -0.54 C |
| 1995 | -4.1 C | +1.66 C |
| 1996 | -6.2 C | -0.41 C |
| 1997 | -5.1 C | +0.71 C |
| 1998 | -5.4 C | +0.45 C |
| 1999 | -6.6 C | -0.77 C |
| 2000 | -6.2 C | -0.35 C |
| 2001 | -5.7 C | +0.10 C |
| 2002 | -4.2 C | +1.57 C |
| 2003 | -5.0 C | +0.81 C |
| 2004 | -6.1 C | -0.31 C |
| 2005 | -5.5 C | +0.32 C |
| 2006 | -6.2 C | -0.41 C |
| 2007 | -4.0 C | +1.85 C |
| 2008 | -4.0 C | +1.77 C |
| 2009 | -6.3 C | -0.50 C |
| 2010 | -6.3 C | -0.48 C |
| 2011 | -4.4 C | +1.37 C |
| 2012 | -6.3 C | -0.47 C |
| 2013 | -5.3 C | +0.49 C |
| 2014 | -5.0 C | +0.83 C |
| 2015 | -3.8 C | +1.97 C |
| 2016 | -5.8 C | -0.01 C |
| 2017 | -4.6 C | +1.22 C |
| 2018 | -5.0 C | +0.79 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1937 to 2018. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 79 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.1 to 0.5) per decade | 1937 to 2018 | 79 | Rise |
| Mean daily maximum | 0.3 C (0.2 to 0.4) per decade | 0.5 F (0.3 to 0.6) per decade | 1937 to 2018 | 79 | Rise |
| Mean daily minimum | 0.07 C (-0.02 to 0.16) per decade | 0.13 F (-0.04 to 0.29) per decade | 1937 to 2018 | 79 | Not clearly different from zero |
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
1937 to 2025| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 36.5 C (97.7 F) | 2021 | 31.2 C (88.2 F) | 89 |
| Coldest night (TNn) | -50.0 C (-58.0 F) | 2023 | -43.7 C (-46.7 F) | 89 |
| Wettest day (Rx1day) | 99.3 mm (3.9 in) | 2020 | 36.2 mm (1.4 in) | 89 |
| Wettest five days (Rx5day) | 155.5 mm (6.1 in) | 1948 | 66.9 mm (2.6 in) | 89 |
| Longest dry spell (CDD) | 67 days | 1942 | 18 days | 89 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1937 | 32.5 C (90.5 F) |
| 1938 | 29.5 C (85.1 F) |
| 1939 | 31.3 C (88.3 F) |
| 1940 | 30.1 C (86.2 F) |
| 1941 | 31.9 C (89.4 F) |
| 1942 | 34.1 C (93.4 F) |
| 1943 | 33.6 C (92.5 F) |
| 1944 | 31.9 C (89.4 F) |
| 1945 | 30.9 C (87.6 F) |
| 1946 | 31.3 C (88.3 F) |
| 1947 | 32.7 C (90.9 F) |
| 1948 | 32.7 C (90.9 F) |
| 1949 | 33.1 C (91.6 F) |
| 1950 | 30.2 C (86.4 F) |
| 1951 | 30.5 C (86.9 F) |
| 1952 | 34.4 C (93.9 F) |
| 1953 | 31.4 C (88.5 F) |
| 1954 | 34.1 C (93.4 F) |
| 1955 | 32.3 C (90.1 F) |
| 1956 | 30.2 C (86.4 F) |
| 1957 | 30.2 C (86.4 F) |
| 1958 | 31.0 C (87.8 F) |
| 1959 | 30.6 C (87.1 F) |
| 1960 | 32.2 C (90.0 F) |
| 1961 | 32.6 C (90.7 F) |
| 1962 | 30.8 C (87.4 F) |
| 1963 | 31.6 C (88.9 F) |
| 1964 | 29.7 C (85.5 F) |
| 1965 | 27.0 C (80.6 F) |
| 1966 | 31.0 C (87.8 F) |
| 1967 | 30.7 C (87.3 F) |
| 1968 | 31.7 C (89.1 F) |
| 1969 | 35.2 C (95.4 F) |
| 1970 | 34.3 C (93.7 F) |
| 1971 | 29.7 C (85.5 F) |
| 1972 | 25.9 C (78.6 F) |
| 1973 | 28.9 C (84.0 F) |
| 1974 | 31.4 C (88.5 F) |
| 1975 | 34.4 C (93.9 F) |
| 1976 | 30.5 C (86.9 F) |
| 1977 | 30.7 C (87.3 F) |
| 1978 | 28.5 C (83.3 F) |
| 1979 | 29.4 C (84.9 F) |
| 1980 | 30.9 C (87.6 F) |
| 1981 | 28.0 C (82.4 F) |
| 1982 | 30.0 C (86.0 F) |
| 1983 | 30.0 C (86.0 F) |
| 1984 | 29.7 C (85.5 F) |
| 1985 | 31.6 C (88.9 F) |
| 1986 | 31.7 C (89.1 F) |
| 1987 | 30.4 C (86.7 F) |
| 1988 | 32.2 C (90.0 F) |
| 1989 | 28.6 C (83.5 F) |
| 1990 | 30.1 C (86.2 F) |
| 1991 | 31.1 C (88.0 F) |
| 1992 | 30.3 C (86.5 F) |
| 1993 | 31.0 C (87.8 F) |
| 1994 | 29.2 C (84.6 F) |
| 1995 | 30.7 C (87.3 F) |
| 1996 | 33.8 C (92.8 F) |
| 1997 | 32.4 C (90.3 F) |
| 1998 | 33.7 C (92.7 F) |
| 1999 | 31.2 C (88.2 F) |
| 2000 | 29.8 C (85.6 F) |
| 2001 | 30.7 C (87.3 F) |
| 2002 | 32.5 C (90.5 F) |
| 2003 | 29.4 C (84.9 F) |
| 2004 | 32.0 C (89.6 F) |
| 2005 | 28.9 C (84.0 F) |
| 2006 | 30.0 C (86.0 F) |
| 2007 | 31.3 C (88.3 F) |
| 2008 | 34.1 C (93.4 F) |
| 2009 | 31.2 C (88.2 F) |
| 2010 | 31.9 C (89.4 F) |
| 2011 | 34.3 C (93.7 F) |
| 2012 | 31.4 C (88.5 F) |
| 2013 | 31.0 C (87.8 F) |
| 2014 | 31.8 C (89.2 F) |
| 2015 | 33.7 C (92.7 F) |
| 2016 | 27.1 C (80.8 F) |
| 2017 | 32.8 C (91.0 F) |
| 2018 | 32.3 C (90.1 F) |
| 2019 | 30.8 C (87.4 F) |
| 2020 | 34.9 C (94.8 F) |
| 2021 | 36.5 C (97.7 F) |
| 2022 | 31.9 C (89.4 F) |
| 2023 | 31.0 C (87.8 F) |
| 2024 | 33.8 C (92.8 F) |
| 2025 | 31.2 C (88.2 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1937 | -44.3 C (-47.7 F) |
| 1938 | -41.0 C (-41.8 F) |
| 1939 | -46.1 C (-51.0 F) |
| 1940 | -43.5 C (-46.3 F) |
| 1941 | -44.7 C (-48.5 F) |
| 1942 | -42.7 C (-44.9 F) |
| 1943 | -39.3 C (-38.7 F) |
| 1944 | -45.3 C (-49.5 F) |
| 1945 | -43.7 C (-46.7 F) |
| 1946 | -45.3 C (-49.5 F) |
| 1947 | -46.2 C (-51.2 F) |
| 1948 | -43.8 C (-46.8 F) |
| 1949 | -45.2 C (-49.4 F) |
| 1950 | -46.9 C (-52.4 F) |
| 1951 | -48.7 C (-55.7 F) |
| 1952 | -48.3 C (-54.9 F) |
| 1953 | -48.5 C (-55.3 F) |
| 1954 | -40.2 C (-40.4 F) |
| 1955 | -47.0 C (-52.6 F) |
| 1956 | -44.5 C (-48.1 F) |
| 1957 | -42.2 C (-44.0 F) |
| 1958 | -42.8 C (-45.0 F) |
| 1959 | -44.6 C (-48.3 F) |
| 1960 | -47.9 C (-54.2 F) |
| 1961 | -43.5 C (-46.3 F) |
| 1962 | -40.4 C (-40.7 F) |
| 1963 | -39.7 C (-39.5 F) |
| 1964 | -43.9 C (-47.0 F) |
| 1965 | -46.9 C (-52.4 F) |
| 1966 | -47.1 C (-52.8 F) |
| 1967 | -44.2 C (-47.6 F) |
| 1968 | -45.9 C (-50.6 F) |
| 1969 | -46.9 C (-52.4 F) |
| 1970 | -43.9 C (-47.0 F) |
| 1971 | -42.3 C (-44.1 F) |
| 1972 | -41.7 C (-43.1 F) |
| 1973 | -42.8 C (-45.0 F) |
| 1974 | -47.2 C (-53.0 F) |
| 1975 | -38.8 C (-37.8 F) |
| 1976 | -44.5 C (-48.1 F) |
| 1977 | -43.6 C (-46.5 F) |
| 1978 | -42.6 C (-44.7 F) |
| 1979 | -46.3 C (-51.3 F) |
| 1980 | -45.1 C (-49.2 F) |
| 1981 | -39.6 C (-39.3 F) |
| 1982 | -47.6 C (-53.7 F) |
| 1983 | -43.7 C (-46.7 F) |
| 1984 | -44.5 C (-48.1 F) |
| 1985 | -44.3 C (-47.7 F) |
| 1986 | -42.5 C (-44.5 F) |
| 1987 | -48.6 C (-55.5 F) |
| 1988 | -41.2 C (-42.2 F) |
| 1989 | -38.4 C (-37.1 F) |
| 1990 | -42.7 C (-44.9 F) |
| 1991 | -42.3 C (-44.1 F) |
| 1992 | -39.0 C (-38.2 F) |
| 1993 | -47.2 C (-53.0 F) |
| 1994 | -46.6 C (-51.9 F) |
| 1995 | -40.3 C (-40.5 F) |
| 1996 | -48.0 C (-54.4 F) |
| 1997 | -41.0 C (-41.8 F) |
| 1998 | -43.4 C (-46.1 F) |
| 1999 | -43.9 C (-47.0 F) |
| 2000 | -43.7 C (-46.7 F) |
| 2001 | -46.2 C (-51.2 F) |
| 2002 | -44.7 C (-48.5 F) |
| 2003 | -40.4 C (-40.7 F) |
| 2004 | -42.2 C (-44.0 F) |
| 2005 | -39.7 C (-39.5 F) |
| 2006 | -45.0 C (-49.0 F) |
| 2007 | -39.8 C (-39.6 F) |
| 2008 | -43.3 C (-45.9 F) |
| 2009 | -42.4 C (-44.3 F) |
| 2010 | -43.8 C (-46.8 F) |
| 2011 | -41.4 C (-42.5 F) |
| 2012 | -43.5 C (-46.3 F) |
| 2013 | -40.7 C (-41.3 F) |
| 2014 | -44.5 C (-48.1 F) |
| 2015 | -41.1 C (-42.0 F) |
| 2016 | -40.9 C (-41.6 F) |
| 2017 | -40.8 C (-41.4 F) |
| 2018 | -43.5 C (-46.3 F) |
| 2019 | -45.9 C (-50.6 F) |
| 2020 | -43.6 C (-46.5 F) |
| 2021 | -46.6 C (-51.9 F) |
| 2022 | -41.2 C (-42.2 F) |
| 2023 | -50.0 C (-58.0 F) |
| 2024 | -39.6 C (-39.3 F) |
| 2025 | -43.7 C (-46.7 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1937 | 28.5 mm (1.1 in) |
| 1938 | 40.8 mm (1.6 in) |
| 1939 | 29.7 mm (1.2 in) |
| 1940 | 16.1 mm (0.6 in) |
| 1941 | 31.6 mm (1.2 in) |
| 1942 | 34.2 mm (1.3 in) |
| 1943 | 75.0 mm (3.0 in) |
| 1944 | 36.1 mm (1.4 in) |
| 1945 | 34.0 mm (1.3 in) |
| 1946 | 31.7 mm (1.2 in) |
| 1947 | 22.1 mm (0.9 in) |
| 1948 | 51.7 mm (2.0 in) |
| 1949 | 31.7 mm (1.2 in) |
| 1950 | 28.2 mm (1.1 in) |
| 1951 | 48.5 mm (1.9 in) |
| 1952 | 32.2 mm (1.3 in) |
| 1953 | 28.7 mm (1.1 in) |
| 1954 | 36.2 mm (1.4 in) |
| 1955 | 34.5 mm (1.4 in) |
| 1956 | 41.2 mm (1.6 in) |
| 1957 | 36.0 mm (1.4 in) |
| 1958 | 30.3 mm (1.2 in) |
| 1959 | 41.9 mm (1.6 in) |
| 1960 | 25.3 mm (1.0 in) |
| 1961 | 36.3 mm (1.4 in) |
| 1962 | 34.1 mm (1.3 in) |
| 1963 | 37.1 mm (1.5 in) |
| 1964 | 36.2 mm (1.4 in) |
| 1965 | 30.1 mm (1.2 in) |
| 1966 | 22.1 mm (0.9 in) |
| 1967 | 45.9 mm (1.8 in) |
| 1968 | 24.4 mm (1.0 in) |
| 1969 | 28.1 mm (1.1 in) |
| 1970 | 27.4 mm (1.1 in) |
| 1971 | 34.4 mm (1.4 in) |
| 1972 | 41.1 mm (1.6 in) |
| 1973 | 37.4 mm (1.5 in) |
| 1974 | 46.2 mm (1.8 in) |
| 1975 | 42.0 mm (1.7 in) |
| 1976 | 45.8 mm (1.8 in) |
| 1977 | 36.0 mm (1.4 in) |
| 1978 | 28.3 mm (1.1 in) |
| 1979 | 35.3 mm (1.4 in) |
| 1980 | 22.7 mm (0.9 in) |
| 1981 | 38.7 mm (1.5 in) |
| 1982 | 29.7 mm (1.2 in) |
| 1983 | 38.7 mm (1.5 in) |
| 1984 | 32.1 mm (1.3 in) |
| 1985 | 25.2 mm (1.0 in) |
| 1986 | 19.4 mm (0.8 in) |
| 1987 | 20.6 mm (0.8 in) |
| 1988 | 68.4 mm (2.7 in) |
| 1989 | 65.6 mm (2.6 in) |
| 1990 | 28.4 mm (1.1 in) |
| 1991 | 36.4 mm (1.4 in) |
| 1992 | 49.0 mm (1.9 in) |
| 1993 | 35.8 mm (1.4 in) |
| 1994 | 34.7 mm (1.4 in) |
| 1995 | 40.9 mm (1.6 in) |
| 1996 | 38.6 mm (1.5 in) |
| 1997 | 31.8 mm (1.3 in) |
| 1998 | 67.6 mm (2.7 in) |
| 1999 | 40.4 mm (1.6 in) |
| 2000 | 36.3 mm (1.4 in) |
| 2001 | 47.1 mm (1.9 in) |
| 2002 | 41.1 mm (1.6 in) |
| 2003 | 50.2 mm (2.0 in) |
| 2004 | 41.3 mm (1.6 in) |
| 2005 | 40.1 mm (1.6 in) |
| 2006 | 68.1 mm (2.7 in) |
| 2007 | 56.1 mm (2.2 in) |
| 2008 | 33.7 mm (1.3 in) |
| 2009 | 45.2 mm (1.8 in) |
| 2010 | 64.1 mm (2.5 in) |
| 2011 | 30.4 mm (1.2 in) |
| 2012 | 56.6 mm (2.2 in) |
| 2013 | 42.8 mm (1.7 in) |
| 2014 | 43.7 mm (1.7 in) |
| 2015 | 25.4 mm (1.0 in) |
| 2016 | 45.7 mm (1.8 in) |
| 2017 | 80.8 mm (3.2 in) |
| 2018 | 29.8 mm (1.2 in) |
| 2019 | 87.9 mm (3.5 in) |
| 2020 | 99.3 mm (3.9 in) |
| 2021 | 41.9 mm (1.6 in) |
| 2022 | 45.0 mm (1.8 in) |
| 2023 | 20.1 mm (0.8 in) |
| 2024 | 39.9 mm (1.6 in) |
| 2025 | 35.1 mm (1.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1937 | 72.1 mm (2.8 in) |
| 1938 | 52.0 mm (2.0 in) |
| 1939 | 59.9 mm (2.4 in) |
| 1940 | 37.1 mm (1.5 in) |
| 1941 | 36.9 mm (1.5 in) |
| 1942 | 86.8 mm (3.4 in) |
| 1943 | 126.8 mm (5.0 in) |
| 1944 | 55.0 mm (2.2 in) |
| 1945 | 56.7 mm (2.2 in) |
| 1946 | 68.5 mm (2.7 in) |
| 1947 | 33.3 mm (1.3 in) |
| 1948 | 155.5 mm (6.1 in) |
| 1949 | 76.2 mm (3.0 in) |
| 1950 | 44.6 mm (1.8 in) |
| 1951 | 79.0 mm (3.1 in) |
| 1952 | 55.6 mm (2.2 in) |
| 1953 | 62.8 mm (2.5 in) |
| 1954 | 60.9 mm (2.4 in) |
| 1955 | 76.3 mm (3.0 in) |
| 1956 | 67.2 mm (2.6 in) |
| 1957 | 69.7 mm (2.7 in) |
| 1958 | 68.0 mm (2.7 in) |
| 1959 | 73.0 mm (2.9 in) |
| 1960 | 49.9 mm (2.0 in) |
| 1961 | 61.6 mm (2.4 in) |
| 1962 | 52.3 mm (2.1 in) |
| 1963 | 67.9 mm (2.7 in) |
| 1964 | 57.6 mm (2.3 in) |
| 1965 | 55.1 mm (2.2 in) |
| 1966 | 44.8 mm (1.8 in) |
| 1967 | 83.6 mm (3.3 in) |
| 1968 | 40.5 mm (1.6 in) |
| 1969 | 37.9 mm (1.5 in) |
| 1970 | 60.7 mm (2.4 in) |
| 1971 | 59.2 mm (2.3 in) |
| 1972 | 64.2 mm (2.5 in) |
| 1973 | 94.5 mm (3.7 in) |
| 1974 | 69.2 mm (2.7 in) |
| 1975 | 66.6 mm (2.6 in) |
| 1976 | 94.5 mm (3.7 in) |
| 1977 | 58.3 mm (2.3 in) |
| 1978 | 68.3 mm (2.7 in) |
| 1979 | 65.1 mm (2.6 in) |
| 1980 | 47.3 mm (1.9 in) |
| 1981 | 78.0 mm (3.1 in) |
| 1982 | 59.4 mm (2.3 in) |
| 1983 | 100.2 mm (3.9 in) |
| 1984 | 69.6 mm (2.7 in) |
| 1985 | 45.1 mm (1.8 in) |
| 1986 | 37.1 mm (1.5 in) |
| 1987 | 46.8 mm (1.8 in) |
| 1988 | 132.9 mm (5.2 in) |
| 1989 | 80.5 mm (3.2 in) |
| 1990 | 42.9 mm (1.7 in) |
| 1991 | 66.1 mm (2.6 in) |
| 1992 | 112.3 mm (4.4 in) |
| 1993 | 58.5 mm (2.3 in) |
| 1994 | 64.3 mm (2.5 in) |
| 1995 | 61.4 mm (2.4 in) |
| 1996 | 77.4 mm (3.0 in) |
| 1997 | 65.3 mm (2.6 in) |
| 1998 | 109.9 mm (4.3 in) |
| 1999 | 80.8 mm (3.2 in) |
| 2000 | 66.9 mm (2.6 in) |
| 2001 | 70.5 mm (2.8 in) |
| 2002 | 65.3 mm (2.6 in) |
| 2003 | 108.5 mm (4.3 in) |
| 2004 | 55.6 mm (2.2 in) |
| 2005 | 94.7 mm (3.7 in) |
| 2006 | 126.5 mm (5.0 in) |
| 2007 | 109.6 mm (4.3 in) |
| 2008 | 76.4 mm (3.0 in) |
| 2009 | 96.5 mm (3.8 in) |
| 2010 | 95.3 mm (3.8 in) |
| 2011 | 57.1 mm (2.2 in) |
| 2012 | 82.7 mm (3.3 in) |
| 2013 | 102.7 mm (4.0 in) |
| 2014 | 135.2 mm (5.3 in) |
| 2015 | 38.8 mm (1.5 in) |
| 2016 | 102.4 mm (4.0 in) |
| 2017 | 133.9 mm (5.3 in) |
| 2018 | 48.2 mm (1.9 in) |
| 2019 | 134.9 mm (5.3 in) |
| 2020 | 114.1 mm (4.5 in) |
| 2021 | 95.8 mm (3.8 in) |
| 2022 | 95.8 mm (3.8 in) |
| 2023 | 29.0 mm (1.1 in) |
| 2024 | 64.7 mm (2.5 in) |
| 2025 | 53.6 mm (2.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1937 | 37 days |
| 1938 | 14 days |
| 1939 | 39 days |
| 1940 | 44 days |
| 1941 | 37 days |
| 1942 | 67 days |
| 1943 | 39 days |
| 1944 | 37 days |
| 1945 | 64 days |
| 1946 | 49 days |
| 1947 | 35 days |
| 1948 | 20 days |
| 1949 | 24 days |
| 1950 | 19 days |
| 1951 | 20 days |
| 1952 | 31 days |
| 1953 | 31 days |
| 1954 | 23 days |
| 1955 | 25 days |
| 1956 | 32 days |
| 1957 | 34 days |
| 1958 | 17 days |
| 1959 | 21 days |
| 1960 | 17 days |
| 1961 | 27 days |
| 1962 | 18 days |
| 1963 | 19 days |
| 1964 | 17 days |
| 1965 | 38 days |
| 1966 | 10 days |
| 1967 | 16 days |
| 1968 | 19 days |
| 1969 | 31 days |
| 1970 | 22 days |
| 1971 | 14 days |
| 1972 | 16 days |
| 1973 | 14 days |
| 1974 | 19 days |
| 1975 | 18 days |
| 1976 | 18 days |
| 1977 | 17 days |
| 1978 | 18 days |
| 1979 | 26 days |
| 1980 | 15 days |
| 1981 | 28 days |
| 1982 | 14 days |
| 1983 | 12 days |
| 1984 | 18 days |
| 1985 | 28 days |
| 1986 | 24 days |
| 1987 | 19 days |
| 1988 | 15 days |
| 1989 | 14 days |
| 1990 | 18 days |
| 1991 | 23 days |
| 1992 | 14 days |
| 1993 | 22 days |
| 1994 | 29 days |
| 1995 | 19 days |
| 1996 | 17 days |
| 1997 | 16 days |
| 1998 | 15 days |
| 1999 | 17 days |
| 2000 | 15 days |
| 2001 | 44 days |
| 2002 | 12 days |
| 2003 | 18 days |
| 2004 | 19 days |
| 2005 | 18 days |
| 2006 | 20 days |
| 2007 | 17 days |
| 2008 | 23 days |
| 2009 | 19 days |
| 2010 | 16 days |
| 2011 | 25 days |
| 2012 | 13 days |
| 2013 | 18 days |
| 2014 | 31 days |
| 2015 | 14 days |
| 2016 | 14 days |
| 2017 | 15 days |
| 2018 | 17 days |
| 2019 | 12 days |
| 2020 | 8 days |
| 2021 | 11 days |
| 2022 | 9 days |
| 2023 | 8 days |
| 2024 | 12 days |
| 2025 | 11 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
79 years with a frostAcross 79 years with a frost, the median last spring frost at Aldan falls on 31 May and the median first autumn frost on 2 September, which leaves a median of 92 days between them.
In 1988 to 2018 the median growing season was 92 days. That is 3 days fewer than in 1937 to 1968.
Fitted over all years, the growing season changes by -1.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1937 to 1968) | Recent period (1988 to 2018) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 31 May | 30 May | 2 June | 3 days later | +0.2 days per decade |
| First autumn frost | 2 September | 3 September | 31 August | 3 days earlier | -1.0 days per decade |
| Growing days | 92 days | 95 days | 92 days | 3 days fewer | -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
81 years, 1937 to 2018A day with at least 35.8 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 82.2 mm (3.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 35.8 mm (1.4 in) | |
| 5 years | 46.7 mm (1.8 in) | |
| 10 years | 54.6 mm (2.1 in) | |
| 25 years | 65.1 mm (2.6 in) | |
| 50 years | 73.4 mm (2.9 in) | |
| 100 years | 82.2 mm (3.2 in) | Longer than the 81 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, 81 years of values from 1937 to 2018.
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: 80.8 mm (3.2 in) in 2017; 75.0 mm (3.0 in) in 1943; 68.4 mm (2.7 in) in 1988.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Aldan, at 1966 and 1996. Each is measured against neighbouring stations.
- Relative to 4 neighbouring stations, the station's annual mean temperature from 1966 ran 0.4 C (0.8 F) lower than in the years before (likely change).
- Relative to 4 neighbouring stations, the station's annual mean temperature from 1996 ran 0.5 C (1.0 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1966 | -0.4 | -0.8 | likely | 4 |
| 1996 | -0.5 | -1.0 | likely | 4 |
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
2004 to 2018 against 1961 to 1990Over 2004 to 2018, Aldan had a mean temperature of -5.2 C (22.6 F) and 787.6 mm (31.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Dzana (Russia, 679 km away), Sofijskij Priisk (Russia, 902 km away) and Mogoca (Russia, 632 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Dzana | Russia | 679 km (422 mi) | -4.8 C (23.3 F) | 447.6 mm (17.6 in) | 1.82 |
| Sofijskij Priisk | Russia | 902 km (560 mi) | -6.3 C (20.6 F) | 754.1 mm (29.7 in) | 1.85 |
| Mogoca | Russia | 632 km (393 mi) | -4.7 C (23.6 F) | 432.8 mm (17.0 in) | 1.89 |
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).