Opheim 12 SSE Weather Records (USC00246238)
Record envelope, standing records and threshold days for Opheim 12 SSE (USC00246238), Montana, United States, with 82 years of record.
Key Facts for Opheim 12 SSE
- Opheim 12 SSE (USC00246238) is a weather station in Montana, United States at 48.70 latitude and -106.32 longitude, 895 m (2,936 ft) above sea level.
- The station reports from 1943 to 2024, 82 years of record.
- 1,464 records set at Opheim 12 SSE still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Opheim 12 SSE set a daily record high maximum temperature of 32.8 C (91.0 F) on 29 September 2024.
About the Station
- Location: Montana, United States, 48.70 latitude, -106.32 longitude.
- Elevation: 895 m (2,936 ft).
- Period of record: 1943 to 2024, 82 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 12.2 C (54.0 F) | -45.0 C (-49.0 F) | n/a | n/a |
| Feb | 18.9 C (66.0 F) | -43.3 C (-45.9 F) | n/a | n/a |
| Mar | 23.9 C (75.0 F) | -38.3 C (-36.9 F) | n/a | n/a |
| Apr | 31.7 C (89.1 F) | -25.6 C (-14.1 F) | n/a | n/a |
| May | 36.7 C (98.1 F) | -16.7 C (1.9 F) | n/a | n/a |
| Jun | 40.6 C (105.1 F) | -6.1 C (21.0 F) | n/a | n/a |
| Jul | 38.9 C (102.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Aug | 40.6 C (105.1 F) | -4.4 C (24.1 F) | n/a | n/a |
| Sep | 37.8 C (100.0 F) | -13.3 C (8.1 F) | n/a | n/a |
| Oct | 32.8 C (91.0 F) | -26.7 C (-16.1 F) | n/a | n/a |
| Nov | 23.3 C (73.9 F) | -34.4 C (-29.9 F) | n/a | n/a |
| Dec | 12.2 C (54.0 F) | -40.6 C (-41.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1943 | 8 |
| 1944 | 24 |
| 1945 | 26 |
| 1946 | 22 |
| 1947 | 10 |
| 1948 | 14 |
| 1949 | 24 |
| 1950 | 26 |
| 1951 | 28 |
| 1952 | 19 |
| 1953 | 13 |
| 1954 | 30 |
| 1955 | 16 |
| 1956 | 24 |
| 1957 | 16 |
| 1958 | 16 |
| 1959 | 17 |
| 1960 | 11 |
| 1961 | 12 |
| 1962 | 21 |
| 1963 | 22 |
| 1964 | 14 |
| 1965 | 24 |
| 1966 | 11 |
| 1967 | 16 |
| 1968 | 21 |
| 1969 | 24 |
| 1970 | 8 |
| 1971 | 12 |
| 1972 | 27 |
| 1973 | 13 |
| 1974 | 10 |
| 1975 | 6 |
| 1976 | 8 |
| 1977 | 17 |
| 1978 | 12 |
| 1979 | 22 |
| 1980 | 22 |
| 1981 | 28 |
| 1982 | 15 |
| 1983 | 23 |
| 1984 | 17 |
| 1985 | 34 |
| 1986 | 14 |
| 1987 | 36 |
| 1988 | 37 |
| 1989 | 26 |
| 1990 | 22 |
| 1991 | 29 |
| 1992 | 38 |
| 1993 | 19 |
| 1994 | 10 |
| 1995 | 20 |
| 1996 | 14 |
| 1997 | 13 |
| 1998 | 18 |
| 1999 | 20 |
| 2000 | 18 |
| 2001 | 12 |
| 2002 | 20 |
| 2003 | 35 |
| 2004 | 12 |
| 2005 | 11 |
| 2006 | 7 |
| 2007 | 17 |
| 2008 | 11 |
| 2009 | 17 |
| 2010 | 7 |
| 2011 | 5 |
| 2012 | 7 |
| 2013 | 11 |
| 2014 | 14 |
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 12 |
| 2018 | 23 |
| 2019 | 22 |
| 2020 | 25 |
| 2021 | 23 |
| 2022 | 16 |
| 2023 | 7 |
| 2024 | 16 |
All-Time Record Progression
10 new records| Date | Kind | Detail |
|---|---|---|
| 1978-09-11 | Record daily precipitation | Record daily precipitation 86.6 mm (3.4 in) |
| 1979-05-06 | Record daily snowfall | Record daily snowfall 25.4 cm (10.0 in) |
| 1983-08-05 | Record high minimum temperature | Record high minimum temperature 23.9 C (75.0 F) |
| 1983-08-06 | Record high maximum temperature | Record high maximum temperature 40.6 C (105.1 F) |
| 1983-12-23 | Record low maximum temperature | Record low maximum temperature -35.6 C (-32.1 F) |
| 2004-01-30 | Record snow depth | Record snow depth 78.7 cm (31.0 in) |
| 2004-01-31 | Record snow depth | Record snow depth 88.9 cm (35.0 in) |
| 2004-02-01 | Record snow depth | Record snow depth 91.4 cm (36.0 in) |
| 2004-02-10 | Record snow depth | Record snow depth 94.0 cm (37.0 in) |
| 2004-02-11 | Record snow depth | Record snow depth 96.5 cm (38.0 in) |
Wettest Day of Each Month
Sep: 86.6 mm (3.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 8.9 mm (0.35 in) | 24 January 1992 |
| Feb | 9.7 mm (0.38 in) | 24 February 1954 |
| Mar | 14.2 mm (0.6 in) | 23 March 1953 |
| Apr | 51.1 mm (2.0 in) | 29 April 1970 |
| May | 54.6 mm (2.1 in) | 9 May 2016 |
| Jun | 77.0 mm (3.0 in) | 7 June 2011 |
| Jul | 62.5 mm (2.5 in) | 9 July 1946 |
| Aug | 56.4 mm (2.2 in) | 4 August 1960 |
| Sep | 86.6 mm (3.4 in) | 11 September 1978 |
| Oct | 34.8 mm (1.4 in) | 12 October 1981 |
| Nov | 12.7 mm (0.5 in) | 8 November 2020 |
| Dec | 13.0 mm (0.5 in) | 7 December 1945 |
Period of Record Coverage
1943 to 2024| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1943 | 153 | 42% | No |
| 1944 | 364 | 99% | Yes |
| 1945 | 362 | 99% | Yes |
| 1946 | 361 | 99% | Yes |
| 1947 | 361 | 99% | Yes |
| 1948 | 362 | 99% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 364 | 99% | Yes |
| 1957 | 362 | 99% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 357 | 98% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 363 | 99% | Yes |
| 1972 | 335 | 92% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 303 | 83% | No |
| 1975 | 359 | 98% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 363 | 99% | Yes |
| 2008 | 330 | 90% | Yes |
| 2009 | 339 | 93% | Yes |
| 2010 | 352 | 96% | Yes |
| 2011 | 316 | 87% | No |
| 2012 | 270 | 74% | No |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 335 | 92% | Yes |
| 2016 | 364 | 99% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 358 | 98% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 334 | 92% | Yes |
| 2024 | 304 | 83% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 29 September 2024 | Opheim 12 SSE, US | daily high max | 32.8 C (91.0 F) | 2.8 C (5.0 F) | 57 years | 29 of 100 (Routine) |
| 27 September 2024 | Opheim 12 SSE, US | daily high max (Tie) | 28.9 C (84.0 F) | tie | 81 years | 8 of 100 (Routine) |
| 25 September 2024 | Opheim 12 SSE, US | daily high min | 9.4 C (48.9 F) | 1.1 C (2.0 F) | 42 years | 22 of 100 (Routine) |
| 25 September 2024 | Opheim 12 SSE, US | daily high max | 32.2 C (90.0 F) | 1.1 C (2.0 F) | 13 years | 12 of 100 (Routine) |
| 18 September 2024 | Opheim 12 SSE, US | daily high min (Tie) | 13.3 C (55.9 F) | tie | 26 years | 3 of 100 (Routine) |
| 10 August 2024 | Opheim 12 SSE, US | daily low min | 0.6 C (33.1 F) | 1.6 C (2.9 F) | 47 years | 26 of 100 (Routine) |
| 2 August 2024 | Opheim 12 SSE, US | daily high max | 36.7 C (98.1 F) | 0.6 C (1.1 F) | 41 years | 21 of 100 (Routine) |
| 25 July 2024 | Opheim 12 SSE, US | daily high max | 35.6 C (96.1 F) | 0.6 C (1.1 F) | 36 years | 19 of 100 (Routine) |
| 17 June 2024 | Opheim 12 SSE, US | daily low max | 8.9 C (48.0 F) | 1.1 C (2.0 F) | 24 years | 17 of 100 (Routine) |
| 17 June 2024 | Opheim 12 SSE, US | daily low min (Tie) | 1.7 C (35.1 F) | tie | 70 years | 7 of 100 (Routine) |
| 19 April 2024 | Opheim 12 SSE, US | daily low max | -2.2 C (28.0 F) | 1.6 C (2.9 F) | 73 years | 31 of 100 (Routine) |
| 18 April 2024 | Opheim 12 SSE, US | daily low max | -1.7 C (28.9 F) | 0.6 C (1.1 F) | 58 years | 25 of 100 (Routine) |
| 29 March 2024 | Opheim 12 SSE, US | daily rain | 5.1 mm (0.20 in) | 1.3 mm (0.05 in) | 78 years | 20 of 100 (Routine) |
| 29 March 2024 | Opheim 12 SSE, US | daily snowfall (Tie) | 6.4 cm (2.5 in) | tie | 62 years | 6 of 100 (Routine) |
| 10 March 2024 | Opheim 12 SSE, US | daily high min | -1.1 C (30.0 F) | 0.6 C (1.1 F) | 67 years | 28 of 100 (Routine) |
| 3 March 2024 | Opheim 12 SSE, US | daily rain | 2.0 mm (0.08 in) | 0.5 mm (0.02 in) | 41 years | 20 of 100 (Routine) |
| 8 February 2024 | Opheim 12 SSE, US | daily rain | 3.6 mm (0.14 in) | 0.3 mm (0.01 in) | 45 years | 20 of 100 (Routine) |
| 7 February 2024 | Opheim 12 SSE, US | daily rain | 4.3 mm (0.17 in) | 1.5 mm (0.06 in) | 45 years | 20 of 100 (Routine) |
| 4 February 2024 | Opheim 12 SSE, US | daily high min | -1.7 C (28.9 F) | 1.1 C (2.0 F) | 28 years | 17 of 100 (Routine) |
| 30 January 2024 | Opheim 12 SSE, US | daily high max | 8.9 C (48.0 F) | 2.8 C (5.0 F) | 26 years | 19 of 100 (Routine) |
Climate Trend
73 complete years, 1944 to 2022| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1944 | 3.3 C | +0.23 C |
| 1945 | 1.8 C | -1.27 C |
| 1946 | 2.8 C | -0.27 C |
| 1947 | 2.5 C | -0.63 C |
| 1948 | 2.5 C | -0.57 C |
| 1949 | 2.3 C | -0.83 C |
| 1950 | -0.2 C | -3.29 C |
| 1951 | -0.5 C | -3.62 C |
| 1952 | 2.2 C | -0.87 C |
| 1953 | 3.9 C | +0.75 C |
| 1954 | 3.0 C | -0.12 C |
| 1955 | 1.5 C | -1.63 C |
| 1956 | 2.9 C | -0.19 C |
| 1957 | 3.3 C | +0.21 C |
| 1958 | 3.5 C | +0.44 C |
| 1959 | 2.3 C | -0.76 C |
| 1960 | 2.9 C | -0.18 C |
| 1961 | 3.9 C | +0.77 C |
| 1962 | 3.5 C | +0.43 C |
| 1963 | 4.5 C | +1.36 C |
| 1964 | 3.2 C | +0.14 C |
| 1965 | 1.6 C | -1.48 C |
| 1966 | 2.3 C | -0.80 C |
| 1967 | 2.8 C | -0.35 C |
| 1968 | 3.4 C | +0.34 C |
| 1969 | 2.4 C | -0.68 C |
| 1970 | 2.7 C | -0.39 C |
| 1971 | 2.9 C | -0.20 C |
| 1973 | 4.3 C | +1.24 C |
| 1975 | 3.0 C | -0.15 C |
| 1976 | 4.3 C | +1.21 C |
| 1977 | 4.1 C | +0.98 C |
| 1978 | 2.1 C | -1.03 C |
| 1979 | 2.6 C | -0.52 C |
| 1980 | 4.2 C | +1.09 C |
| 1981 | 5.7 C | +2.63 C |
| 1982 | 1.9 C | -1.25 C |
| 1983 | 4.1 C | +1.02 C |
| 1984 | 4.1 C | +1.02 C |
| 1985 | 2.6 C | -0.50 C |
| 1986 | 4.6 C | +1.48 C |
| 1987 | 6.4 C | +3.30 C |
| 1988 | 5.2 C | +2.08 C |
| 1989 | 3.3 C | +0.18 C |
| 1990 | 4.5 C | +1.36 C |
| 1991 | 4.9 C | +1.75 C |
| 1992 | 4.8 C | +1.69 C |
| 1993 | 2.8 C | -0.31 C |
| 1994 | 3.8 C | +0.70 C |
| 1995 | 3.6 C | +0.52 C |
| 1996 | 1.6 C | -1.54 C |
| 1997 | 4.0 C | +0.87 C |
| 1998 | 5.4 C | +2.30 C |
| 1999 | 4.8 C | +1.71 C |
| 2000 | 3.9 C | +0.78 C |
| 2001 | 4.9 C | +1.75 C |
| 2002 | 3.2 C | +0.05 C |
| 2003 | 3.7 C | +0.59 C |
| 2004 | 3.3 C | +0.22 C |
| 2005 | 3.8 C | +0.67 C |
| 2006 | 4.2 C | +1.07 C |
| 2007 | 3.8 C | +0.71 C |
| 2009 | 1.9 C | -1.25 C |
| 2010 | 2.3 C | -0.82 C |
| 2013 | 1.5 C | -1.58 C |
| 2014 | 1.4 C | -1.69 C |
| 2016 | 3.4 C | +0.31 C |
| 2017 | 2.5 C | -0.61 C |
| 2018 | 0.6 C | -2.46 C |
| 2019 | 0.4 C | -2.71 C |
| 2020 | 1.6 C | -1.46 C |
| 2021 | 2.7 C | -0.37 C |
| 2022 | 1.8 C | -1.32 C |
The fitted trend in annual mean temperature here over 1944 to 2022 is 0.05 C (-0.09 to 0.18) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.2 to 0.3) per decade. The slope is a straight line fitted to 73 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.05 C (-0.09 to 0.18) per decade | 0.1 F (-0.2 to 0.3) per decade | 1944 to 2022 | 73 | Not clearly different from zero |
| Mean daily maximum | -0.03 C (-0.17 to 0.12) per decade | -0.1 F (-0.3 to 0.2) per decade | 1944 to 2022 | 73 | Not clearly different from zero |
| Mean daily minimum | 0.12 C (-0.02 to 0.25) per decade | 0.21 F (-0.03 to 0.45) per decade | 1944 to 2022 | 73 | 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
1943 to 2024| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.6 C (105.1 F) | 1983 | 36.1 C (97.0 F) | 82 |
| Coldest night (TNn) | -45.0 C (-49.0 F) | 1954 | -36.7 C (-34.1 F) | 82 |
| Wettest day (Rx1day) | 86.6 mm (3.4 in) | 1978 | 33.2 mm (1.3 in) | 82 |
| Wettest five days (Rx5day) | 129.6 mm (5.1 in) | 1978 | 48.4 mm (1.9 in) | 82 |
| Longest dry spell (CDD) | 107 days | 1949 | 41 days | 82 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1943 | 32.8 C (91.0 F) |
| 1944 | 35.0 C (95.0 F) |
| 1945 | 36.1 C (97.0 F) |
| 1946 | 35.0 C (95.0 F) |
| 1947 | 36.7 C (98.1 F) |
| 1948 | 36.1 C (97.0 F) |
| 1949 | 39.4 C (102.9 F) |
| 1950 | 35.6 C (96.1 F) |
| 1951 | 38.3 C (100.9 F) |
| 1952 | 35.0 C (95.0 F) |
| 1953 | 32.8 C (91.0 F) |
| 1954 | 35.0 C (95.0 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 37.8 C (100.0 F) |
| 1959 | 37.2 C (99.0 F) |
| 1960 | 37.8 C (100.0 F) |
| 1961 | 37.2 C (99.0 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 38.3 C (100.9 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 35.6 C (96.1 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 38.3 C (100.9 F) |
| 1970 | 37.2 C (99.0 F) |
| 1971 | 37.8 C (100.0 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 37.2 C (99.0 F) |
| 1974 | 35.6 C (96.1 F) |
| 1975 | 38.3 C (100.9 F) |
| 1976 | 36.1 C (97.0 F) |
| 1977 | 35.6 C (96.1 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 36.7 C (98.1 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 38.3 C (100.9 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 40.6 C (105.1 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 35.0 C (95.0 F) |
| 1988 | 40.6 C (105.1 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 37.2 C (99.0 F) |
| 1992 | 35.0 C (95.0 F) |
| 1993 | 32.8 C (91.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 35.0 C (95.0 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 36.1 C (97.0 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 38.3 C (100.9 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 38.3 C (100.9 F) |
| 2004 | 34.4 C (93.9 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 38.9 C (102.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 32.8 C (91.0 F) |
| 2012 | 34.4 C (93.9 F) |
| 2013 | 33.9 C (93.0 F) |
| 2014 | 31.7 C (89.1 F) |
| 2015 | 34.4 C (93.9 F) |
| 2016 | 32.8 C (91.0 F) |
| 2017 | 36.7 C (98.1 F) |
| 2018 | 37.2 C (99.0 F) |
| 2019 | 32.8 C (91.0 F) |
| 2020 | 34.4 C (93.9 F) |
| 2021 | 36.7 C (98.1 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 35.6 C (96.1 F) |
| 2024 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1943 | -27.8 C (-18.0 F) |
| 1944 | -34.4 C (-29.9 F) |
| 1945 | -38.3 C (-36.9 F) |
| 1946 | -37.2 C (-35.0 F) |
| 1947 | -41.1 C (-42.0 F) |
| 1948 | -36.7 C (-34.1 F) |
| 1949 | -38.3 C (-36.9 F) |
| 1950 | -43.9 C (-47.0 F) |
| 1951 | -38.9 C (-38.0 F) |
| 1952 | -36.7 C (-34.1 F) |
| 1953 | -38.9 C (-38.0 F) |
| 1954 | -45.0 C (-49.0 F) |
| 1955 | -36.1 C (-33.0 F) |
| 1956 | -37.2 C (-35.0 F) |
| 1957 | -37.2 C (-35.0 F) |
| 1958 | -34.4 C (-29.9 F) |
| 1959 | -36.1 C (-33.0 F) |
| 1960 | -34.4 C (-29.9 F) |
| 1961 | -35.6 C (-32.1 F) |
| 1962 | -43.3 C (-45.9 F) |
| 1963 | -35.6 C (-32.1 F) |
| 1964 | -37.2 C (-35.0 F) |
| 1965 | -35.6 C (-32.1 F) |
| 1966 | -36.1 C (-33.0 F) |
| 1967 | -41.7 C (-43.1 F) |
| 1968 | -38.3 C (-36.9 F) |
| 1969 | -39.4 C (-38.9 F) |
| 1970 | -37.8 C (-36.0 F) |
| 1971 | -36.7 C (-34.1 F) |
| 1972 | -40.0 C (-40.0 F) |
| 1973 | -33.3 C (-27.9 F) |
| 1974 | -38.3 C (-36.9 F) |
| 1975 | -35.6 C (-32.1 F) |
| 1976 | -36.1 C (-33.0 F) |
| 1977 | -38.9 C (-38.0 F) |
| 1978 | -34.4 C (-29.9 F) |
| 1979 | -35.0 C (-31.0 F) |
| 1980 | -40.0 C (-40.0 F) |
| 1981 | -31.7 C (-25.1 F) |
| 1982 | -37.8 C (-36.0 F) |
| 1983 | -40.0 C (-40.0 F) |
| 1984 | -34.4 C (-29.9 F) |
| 1985 | -36.1 C (-33.0 F) |
| 1986 | -37.2 C (-35.0 F) |
| 1987 | -26.1 C (-15.0 F) |
| 1988 | -37.2 C (-35.0 F) |
| 1989 | -40.6 C (-41.1 F) |
| 1990 | -39.4 C (-38.9 F) |
| 1991 | -38.3 C (-36.9 F) |
| 1992 | -33.3 C (-27.9 F) |
| 1993 | -35.6 C (-32.1 F) |
| 1994 | -40.6 C (-41.1 F) |
| 1995 | -32.2 C (-26.0 F) |
| 1996 | -40.0 C (-40.0 F) |
| 1997 | -37.8 C (-36.0 F) |
| 1998 | -36.7 C (-34.1 F) |
| 1999 | -29.4 C (-20.9 F) |
| 2000 | -32.2 C (-26.0 F) |
| 2001 | -30.6 C (-23.1 F) |
| 2002 | -35.0 C (-31.0 F) |
| 2003 | -36.7 C (-34.1 F) |
| 2004 | -35.6 C (-32.1 F) |
| 2005 | -37.8 C (-36.0 F) |
| 2006 | -35.0 C (-31.0 F) |
| 2007 | -33.9 C (-29.0 F) |
| 2008 | -36.1 C (-33.0 F) |
| 2009 | -37.8 C (-36.0 F) |
| 2010 | -36.7 C (-34.1 F) |
| 2011 | -36.7 C (-34.1 F) |
| 2012 | -32.8 C (-27.0 F) |
| 2013 | -37.8 C (-36.0 F) |
| 2014 | -36.7 C (-34.1 F) |
| 2015 | -32.2 C (-26.0 F) |
| 2016 | -35.6 C (-32.1 F) |
| 2017 | -40.0 C (-40.0 F) |
| 2018 | -40.0 C (-40.0 F) |
| 2019 | -43.3 C (-45.9 F) |
| 2020 | -36.1 C (-33.0 F) |
| 2021 | -38.3 C (-36.9 F) |
| 2022 | -38.3 C (-36.9 F) |
| 2023 | -33.3 C (-27.9 F) |
| 2024 | -41.1 C (-42.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1943 | 13.0 mm (0.5 in) |
| 1944 | 31.0 mm (1.2 in) |
| 1945 | 27.9 mm (1.1 in) |
| 1946 | 62.5 mm (2.5 in) |
| 1947 | 36.3 mm (1.4 in) |
| 1948 | 34.0 mm (1.3 in) |
| 1949 | 25.9 mm (1.0 in) |
| 1950 | 23.6 mm (0.9 in) |
| 1951 | 19.3 mm (0.8 in) |
| 1952 | 21.8 mm (0.9 in) |
| 1953 | 21.1 mm (0.8 in) |
| 1954 | 51.1 mm (2.0 in) |
| 1955 | 29.0 mm (1.1 in) |
| 1956 | 49.5 mm (1.9 in) |
| 1957 | 37.6 mm (1.5 in) |
| 1958 | 28.4 mm (1.1 in) |
| 1959 | 33.0 mm (1.3 in) |
| 1960 | 56.4 mm (2.2 in) |
| 1961 | 18.3 mm (0.7 in) |
| 1962 | 37.6 mm (1.5 in) |
| 1963 | 48.3 mm (1.9 in) |
| 1964 | 28.7 mm (1.1 in) |
| 1965 | 35.8 mm (1.4 in) |
| 1966 | 43.9 mm (1.7 in) |
| 1967 | 31.8 mm (1.3 in) |
| 1968 | 52.1 mm (2.1 in) |
| 1969 | 43.2 mm (1.7 in) |
| 1970 | 51.1 mm (2.0 in) |
| 1971 | 24.4 mm (1.0 in) |
| 1972 | 56.9 mm (2.2 in) |
| 1973 | 26.7 mm (1.1 in) |
| 1974 | 35.6 mm (1.4 in) |
| 1975 | 33.3 mm (1.3 in) |
| 1976 | 50.0 mm (2.0 in) |
| 1977 | 35.1 mm (1.4 in) |
| 1978 | 86.6 mm (3.4 in) |
| 1979 | 38.4 mm (1.5 in) |
| 1980 | 21.1 mm (0.8 in) |
| 1981 | 34.8 mm (1.4 in) |
| 1982 | 33.5 mm (1.3 in) |
| 1983 | 60.5 mm (2.4 in) |
| 1984 | 19.8 mm (0.8 in) |
| 1985 | 31.0 mm (1.2 in) |
| 1986 | 24.4 mm (1.0 in) |
| 1987 | 25.7 mm (1.0 in) |
| 1988 | 22.9 mm (0.9 in) |
| 1989 | 26.2 mm (1.0 in) |
| 1990 | 29.7 mm (1.2 in) |
| 1991 | 54.6 mm (2.1 in) |
| 1992 | 34.8 mm (1.4 in) |
| 1993 | 48.8 mm (1.9 in) |
| 1994 | 47.8 mm (1.9 in) |
| 1995 | 31.5 mm (1.2 in) |
| 1996 | 26.9 mm (1.1 in) |
| 1997 | 48.8 mm (1.9 in) |
| 1998 | 19.8 mm (0.8 in) |
| 1999 | 26.7 mm (1.1 in) |
| 2000 | 34.5 mm (1.4 in) |
| 2001 | 44.7 mm (1.8 in) |
| 2002 | 29.0 mm (1.1 in) |
| 2003 | 25.1 mm (1.0 in) |
| 2004 | 30.0 mm (1.2 in) |
| 2005 | 50.5 mm (2.0 in) |
| 2006 | 23.1 mm (0.9 in) |
| 2007 | 30.7 mm (1.2 in) |
| 2008 | 21.3 mm (0.8 in) |
| 2009 | 25.4 mm (1.0 in) |
| 2010 | 37.3 mm (1.5 in) |
| 2011 | 77.0 mm (3.0 in) |
| 2012 | 43.7 mm (1.7 in) |
| 2013 | 47.5 mm (1.9 in) |
| 2014 | 48.5 mm (1.9 in) |
| 2015 | 59.2 mm (2.3 in) |
| 2016 | 54.6 mm (2.1 in) |
| 2017 | 6.6 mm (0.26 in) |
| 2018 | 21.6 mm (0.9 in) |
| 2019 | 35.6 mm (1.4 in) |
| 2020 | 19.3 mm (0.8 in) |
| 2021 | 21.3 mm (0.8 in) |
| 2022 | 25.4 mm (1.0 in) |
| 2023 | 49.0 mm (1.9 in) |
| 2024 | 21.1 mm (0.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1943 | 15.3 mm (0.6 in) |
| 1944 | 34.3 mm (1.4 in) |
| 1945 | 32.4 mm (1.3 in) |
| 1946 | 75.4 mm (3.0 in) |
| 1947 | 93.4 mm (3.7 in) |
| 1948 | 43.9 mm (1.7 in) |
| 1949 | 26.9 mm (1.1 in) |
| 1950 | 43.4 mm (1.7 in) |
| 1951 | 43.3 mm (1.7 in) |
| 1952 | 39.1 mm (1.5 in) |
| 1953 | 28.5 mm (1.1 in) |
| 1954 | 80.3 mm (3.2 in) |
| 1955 | 44.0 mm (1.7 in) |
| 1956 | 76.4 mm (3.0 in) |
| 1957 | 47.7 mm (1.9 in) |
| 1958 | 35.8 mm (1.4 in) |
| 1959 | 61.8 mm (2.4 in) |
| 1960 | 77.5 mm (3.1 in) |
| 1961 | 19.3 mm (0.8 in) |
| 1962 | 64.8 mm (2.6 in) |
| 1963 | 78.3 mm (3.1 in) |
| 1964 | 63.3 mm (2.5 in) |
| 1965 | 61.2 mm (2.4 in) |
| 1966 | 47.0 mm (1.9 in) |
| 1967 | 49.3 mm (1.9 in) |
| 1968 | 77.5 mm (3.1 in) |
| 1969 | 70.7 mm (2.8 in) |
| 1970 | 77.3 mm (3.0 in) |
| 1971 | 30.0 mm (1.2 in) |
| 1972 | 89.2 mm (3.5 in) |
| 1973 | 33.9 mm (1.3 in) |
| 1974 | 72.4 mm (2.9 in) |
| 1975 | 50.6 mm (2.0 in) |
| 1976 | 61.9 mm (2.4 in) |
| 1977 | 42.9 mm (1.7 in) |
| 1978 | 129.6 mm (5.1 in) |
| 1979 | 45.0 mm (1.8 in) |
| 1980 | 23.6 mm (0.9 in) |
| 1981 | 54.3 mm (2.1 in) |
| 1982 | 47.5 mm (1.9 in) |
| 1983 | 62.6 mm (2.5 in) |
| 1984 | 31.0 mm (1.2 in) |
| 1985 | 41.9 mm (1.6 in) |
| 1986 | 47.0 mm (1.9 in) |
| 1987 | 34.3 mm (1.4 in) |
| 1988 | 35.1 mm (1.4 in) |
| 1989 | 39.9 mm (1.6 in) |
| 1990 | 35.6 mm (1.4 in) |
| 1991 | 68.6 mm (2.7 in) |
| 1992 | 43.4 mm (1.7 in) |
| 1993 | 79.5 mm (3.1 in) |
| 1994 | 65.1 mm (2.6 in) |
| 1995 | 82.6 mm (3.3 in) |
| 1996 | 47.2 mm (1.9 in) |
| 1997 | 55.4 mm (2.2 in) |
| 1998 | 29.7 mm (1.2 in) |
| 1999 | 41.3 mm (1.6 in) |
| 2000 | 55.4 mm (2.2 in) |
| 2001 | 56.9 mm (2.2 in) |
| 2002 | 48.1 mm (1.9 in) |
| 2003 | 40.9 mm (1.6 in) |
| 2004 | 50.1 mm (2.0 in) |
| 2005 | 59.9 mm (2.4 in) |
| 2006 | 30.9 mm (1.2 in) |
| 2007 | 59.9 mm (2.4 in) |
| 2008 | 35.6 mm (1.4 in) |
| 2009 | 35.1 mm (1.4 in) |
| 2010 | 56.3 mm (2.2 in) |
| 2011 | 54.9 mm (2.2 in) |
| 2012 | 7.7 mm (0.30 in) |
| 2013 | 75.4 mm (3.0 in) |
| 2014 | 53.3 mm (2.1 in) |
| 2015 | 96.5 mm (3.8 in) |
| 2016 | 73.9 mm (2.9 in) |
| 2017 | 9.6 mm (0.38 in) |
| 2018 | 41.9 mm (1.6 in) |
| 2019 | 62.2 mm (2.4 in) |
| 2020 | 40.1 mm (1.6 in) |
| 2021 | 35.3 mm (1.4 in) |
| 2022 | 60.8 mm (2.4 in) |
| 2023 | 69.1 mm (2.7 in) |
| 2024 | 48.6 mm (1.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1943 | 61 days |
| 1944 | 47 days |
| 1945 | 30 days |
| 1946 | 29 days |
| 1947 | 32 days |
| 1948 | 39 days |
| 1949 | 107 days |
| 1950 | 27 days |
| 1951 | 34 days |
| 1952 | 73 days |
| 1953 | 47 days |
| 1954 | 35 days |
| 1955 | 53 days |
| 1956 | 49 days |
| 1957 | 45 days |
| 1958 | 58 days |
| 1959 | 87 days |
| 1960 | 55 days |
| 1961 | 30 days |
| 1962 | 42 days |
| 1963 | 38 days |
| 1964 | 65 days |
| 1965 | 53 days |
| 1966 | 43 days |
| 1967 | 37 days |
| 1968 | 49 days |
| 1969 | 57 days |
| 1970 | 32 days |
| 1971 | 32 days |
| 1972 | 20 days |
| 1973 | 41 days |
| 1974 | 27 days |
| 1975 | 27 days |
| 1976 | 30 days |
| 1977 | 65 days |
| 1978 | 27 days |
| 1979 | 44 days |
| 1980 | 39 days |
| 1981 | 50 days |
| 1982 | 44 days |
| 1983 | 42 days |
| 1984 | 37 days |
| 1985 | 80 days |
| 1986 | 39 days |
| 1987 | 95 days |
| 1988 | 27 days |
| 1989 | 44 days |
| 1990 | 40 days |
| 1991 | 32 days |
| 1992 | 41 days |
| 1993 | 50 days |
| 1994 | 41 days |
| 1995 | 62 days |
| 1996 | 30 days |
| 1997 | 48 days |
| 1998 | 38 days |
| 1999 | 34 days |
| 2000 | 37 days |
| 2001 | 77 days |
| 2002 | 71 days |
| 2003 | 39 days |
| 2004 | 48 days |
| 2005 | 43 days |
| 2006 | 34 days |
| 2007 | 29 days |
| 2008 | 32 days |
| 2009 | 32 days |
| 2010 | 51 days |
| 2011 | 3 days |
| 2012 | 19 days |
| 2013 | 49 days |
| 2014 | 33 days |
| 2015 | 37 days |
| 2016 | 34 days |
| 2017 | 34 days |
| 2018 | 36 days |
| 2019 | 58 days |
| 2020 | 50 days |
| 2021 | 84 days |
| 2022 | 44 days |
| 2023 | 51 days |
| 2024 | 30 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
73 years with a frostAcross 73 years with a frost, the median last spring frost at Opheim 12 SSE falls on 29 May and the median first autumn frost on 9 September, which leaves a median of 102 days between them.
In 1989 to 2022 the median growing season was 104 days. That is 11 days more than in 1944 to 1975.
Fitted over all years, the growing season changes by +3.7 days per decade at this station.
| Measure | Median, all years | Earliest period (1944 to 1975) | Recent period (1989 to 2022) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 29 May | 4 June | 28 May | 7 days earlier | -1.3 days per decade |
| First autumn frost | 9 September | 5 September | 9 September | 4 days later | +2.4 days per decade |
| Growing days | 102 days | 93 days | 104 days | 11 days more | +3.7 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
77 years, 1944 to 2023A day with at least 33.3 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 79.1 mm (3.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 33.3 mm (1.3 in) | |
| 5 years | 45.6 mm (1.8 in) | |
| 10 years | 53.8 mm (2.1 in) | |
| 25 years | 64.0 mm (2.5 in) | |
| 50 years | 71.6 mm (2.8 in) | |
| 100 years | 79.1 mm (3.1 in) | Longer than the 77 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, 77 years of values from 1944 to 2023.
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: 86.6 mm (3.4 in) in 1978; 62.5 mm (2.5 in) in 1946; 60.5 mm (2.4 in) in 1983.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Opheim 12 SSE, at 1962. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1962 ran 0.3 C (0.5 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1962 | +0.3 | +0.5 | likely | 5 |
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 2022 against 1961 to 1990Over 2004 to 2022, Opheim 12 SSE had a mean temperature of 2.4 C (36.2 F) and 288.7 mm (11.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Farson 2NNE (United States, 768 km away), Gull Lake Cda Epf (Canada, 209 km away) and Arvaiheer (Mongolia, 9,086 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Farson 2NNE | United States | 768 km (477 mi) | 3.0 C (37.5 F) | 197.8 mm (7.8 in) | 1.48 |
| Gull Lake Cda Epf | Canada | 209 km (130 mi) | 3.1 C (37.5 F) | 386.8 mm (15.2 in) | 1.55 |
| Arvaiheer | Mongolia | 9,086 km (5,646 mi) | 1.3 C (34.3 F) | 198.5 mm (7.8 in) | 1.57 |
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).