Whitman Mission Weather Records (USC00459200)
Record envelope, standing records and threshold days for Whitman Mission (USC00459200), Washington, United States, with 65 years of record.
Key Facts for Whitman Mission
- Whitman Mission (USC00459200) is a weather station in Washington, United States at 46.04 latitude and -118.46 longitude, 193 m (632 ft) above sea level.
- The station reports from 1962 to 2026, 65 years of record.
- 1,464 records set at Whitman Mission still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Whitman Mission set a daily record high minimum temperature of 13.9 C (57.0 F) on 7 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Washington, United States, 46.04 latitude, -118.46 longitude.
- Elevation: 193 m (632 ft).
- Period of record: 1962 to 2026, 65 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 21.1 C (70.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Feb | 24.4 C (75.9 F) | -28.9 C (-20.0 F) | 18.3 C (64.9 F) | -5.6 C (21.9 F) |
| Mar | 27.8 C (82.0 F) | -17.8 C (0.0 F) | 26.1 C (79.0 F) | -5.0 C (23.0 F) |
| Apr | 31.7 C (89.1 F) | -9.4 C (15.1 F) | 25.0 C (77.0 F) | -2.2 C (28.0 F) |
| May | 36.7 C (98.1 F) | -2.8 C (27.0 F) | 30.6 C (87.1 F) | 1.7 C (35.1 F) |
| Jun | 45.6 C (114.1 F) | 0.0 C (32.0 F) | 34.4 C (93.9 F) | 3.9 C (39.0 F) |
| Jul | 45.6 C (114.1 F) | 1.1 C (34.0 F) | 38.9 C (102.0 F) | 7.2 C (45.0 F) |
| Aug | 43.3 C (109.9 F) | 0.0 C (32.0 F) | 37.2 C (99.0 F) | 4.4 C (39.9 F) |
| Sep | 39.4 C (102.9 F) | -7.8 C (18.0 F) | 32.2 C (90.0 F) | 0.6 C (33.1 F) |
| Oct | 32.2 C (90.0 F) | -13.3 C (8.1 F) | 27.8 C (82.0 F) | 1.7 C (35.1 F) |
| Nov | 27.8 C (82.0 F) | -25.0 C (-13.0 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -32.8 C (-27.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1962 | 4 |
| 1963 | 33 |
| 1964 | 30 |
| 1965 | 32 |
| 1966 | 26 |
| 1967 | 32 |
| 1968 | 30 |
| 1969 | 32 |
| 1970 | 27 |
| 1971 | 39 |
| 1972 | 55 |
| 1973 | 24 |
| 1974 | 34 |
| 1975 | 22 |
| 1976 | 33 |
| 1977 | 26 |
| 1978 | 18 |
| 1979 | 23 |
| 1980 | 20 |
| 1981 | 17 |
| 1982 | 25 |
| 1983 | 29 |
| 1984 | 19 |
| 1985 | 43 |
| 1986 | 38 |
| 1987 | 35 |
| 1988 | 22 |
| 1989 | 29 |
| 1990 | 30 |
| 1991 | 17 |
| 1992 | 23 |
| 1993 | 28 |
| 1994 | 29 |
| 1995 | 21 |
| 1996 | 23 |
| 1997 | 13 |
| 1998 | 17 |
| 1999 | 14 |
| 2000 | 12 |
| 2001 | 21 |
| 2002 | 43 |
| 2003 | 29 |
| 2004 | 13 |
| 2005 | 11 |
| 2006 | 28 |
| 2007 | 11 |
| 2008 | 20 |
| 2009 | 16 |
| 2010 | 12 |
| 2011 | 17 |
| 2012 | 15 |
| 2013 | 17 |
| 2014 | 19 |
| 2015 | 15 |
| 2016 | 11 |
| 2017 | 10 |
| 2018 | 8 |
| 2019 | 28 |
| 2020 | 12 |
| 2021 | 27 |
| 2022 | 24 |
| 2023 | 13 |
| 2024 | 10 |
| 2025 | 5 |
| 2026 | 5 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1994-02-24 | Record daily snowfall | Record daily snowfall 30.5 cm (12.0 in) |
| 1994-07-23 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 1996-01-31 | Record low maximum temperature | Record low maximum temperature -18.9 C (-2.0 F) |
| 1996-02-01 | Record low maximum temperature | Record low maximum temperature -20.0 C (-4.0 F) |
| 1996-11-19 | Record daily precipitation | Record daily precipitation 48.3 mm (1.9 in) |
| 2008-12-22 | Record snow depth | Record snow depth 38.1 cm (15.0 in) |
| 2021-06-29 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 2021-06-30 | Record high maximum temperature | Record high maximum temperature 45.6 C (114.1 F) |
Wettest Day of Each Month
Nov: 48.3 mm (1.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 27.9 mm (1.1 in) | 6 January 1969 |
| Feb | 32.8 mm (1.3 in) | 10 February 2026 |
| Mar | 33.0 mm (1.3 in) | 13 March 2025 |
| Apr | 35.6 mm (1.4 in) | 28 April 1990 |
| May | 38.6 mm (1.5 in) | 31 May 2000 |
| Jun | 31.5 mm (1.2 in) | 2 June 1971 |
| Jul | 19.6 mm (0.8 in) | 9 July 2016 |
| Aug | 33.0 mm (1.3 in) | 30 August 1977 |
| Sep | 25.4 mm (1.0 in) | 9 September 2019 |
| Oct | 38.1 mm (1.5 in) | 29 October 1982 |
| Nov | 48.3 mm (1.9 in) | 19 November 1996 |
| Dec | 29.7 mm (1.2 in) | 29 December 2010 |
Period of Record Coverage
1962 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1962 | 91 | 25% | No |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 363 | 99% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 361 | 99% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 362 | 99% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 363 | 99% | Yes |
| 1981 | 359 | 98% | Yes |
| 1982 | 358 | 98% | Yes |
| 1983 | 352 | 96% | Yes |
| 1984 | 336 | 92% | Yes |
| 1985 | 328 | 90% | No |
| 1986 | 352 | 96% | Yes |
| 1987 | 359 | 98% | Yes |
| 1988 | 361 | 99% | Yes |
| 1989 | 359 | 98% | Yes |
| 1990 | 362 | 99% | Yes |
| 1991 | 362 | 99% | Yes |
| 1992 | 362 | 99% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 361 | 99% | Yes |
| 1995 | 354 | 97% | Yes |
| 1996 | 349 | 95% | Yes |
| 1997 | 346 | 95% | Yes |
| 1998 | 329 | 90% | Yes |
| 1999 | 362 | 99% | Yes |
| 2000 | 363 | 99% | Yes |
| 2001 | 362 | 99% | Yes |
| 2002 | 361 | 99% | Yes |
| 2003 | 362 | 99% | Yes |
| 2004 | 363 | 99% | Yes |
| 2005 | 361 | 99% | Yes |
| 2006 | 362 | 99% | Yes |
| 2007 | 361 | 99% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 360 | 99% | Yes |
| 2012 | 354 | 97% | Yes |
| 2013 | 303 | 83% | No |
| 2014 | 292 | 80% | No |
| 2015 | 218 | 60% | No |
| 2016 | 320 | 87% | No |
| 2017 | 296 | 81% | No |
| 2018 | 313 | 86% | No |
| 2019 | 295 | 81% | No |
| 2020 | 230 | 63% | No |
| 2021 | 359 | 98% | Yes |
| 2022 | 360 | 99% | Yes |
| 2023 | 353 | 97% | Yes |
| 2024 | 353 | 96% | Yes |
| 2025 | 62 | 17% | No |
| 2026 | 229 | 63% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 7 September 2026 | Whitman Mission, US | daily high min (Provisional) | 13.9 C (57.0 F) | 0.6 C (1.1 F) | 61 years | 25 of 100 (Routine) |
| 7 September 2026 | Whitman Mission, US | daily low max (Provisional) | 19.4 C (66.9 F) | 1.2 C (2.2 F) | 41 years | 20 of 100 (Routine) |
| 4 September 2026 | Whitman Mission, US | daily low max (Provisional) | 20.0 C (68.0 F) | 2.2 C (4.0 F) | 56 years | 27 of 100 (Routine) |
| 3 September 2026 | Whitman Mission, US | daily rain (Provisional) | 14.2 mm (0.6 in) | 10.4 mm (0.4 in) | 25 years | 20 of 100 (Routine) |
| 4 August 2026 | Whitman Mission, US | daily low min (Tie) | 5.0 C (41.0 F) | tie | 45 years | 4 of 100 (Routine) |
| 16 July 2026 | Whitman Mission, US | daily high min | 18.9 C (66.0 F) | 1.1 C (2.0 F) | 56 years | 25 of 100 (Routine) |
| 16 July 2026 | Whitman Mission, US | daily rain (Tie) | 1.3 mm (0.05 in) | tie | 24 years | 3 of 100 (Routine) |
| 16 July 2026 | Whitman Mission, US | daily high max (Tie) | 38.9 C (102.0 F) | tie | 3 years | 1 of 100 (Routine) |
| 2 May 2026 | Whitman Mission, US | daily high max (Tie) | 28.3 C (82.9 F) | tie | 49 years | 5 of 100 (Routine) |
| 28 April 2026 | Whitman Mission, US | daily low min | -2.2 C (28.0 F) | 0.5 C (0.9 F) | 41 years | 19 of 100 (Routine) |
| 15 April 2026 | Whitman Mission, US | daily rain | 12.2 mm (0.5 in) | 4.6 mm (0.18 in) | 63 years | 20 of 100 (Routine) |
| 31 March 2026 | Whitman Mission, US | daily low min (Tie) | -5.0 C (23.0 F) | tie | 55 years | 5 of 100 (Routine) |
| 25 March 2026 | Whitman Mission, US | daily high min (Tie) | 9.4 C (48.9 F) | tie | 27 years | 3 of 100 (Routine) |
| 21 March 2026 | Whitman Mission, US | daily high max (Tie) | 22.2 C (72.0 F) | tie | 63 years | 6 of 100 (Routine) |
| 20 March 2026 | Whitman Mission, US | daily high max | 26.1 C (79.0 F) | 0.5 C (0.9 F) | 1 year | 7 of 100 (Routine) |
| 19 March 2026 | Whitman Mission, US | daily high max | 25.6 C (78.1 F) | 1.7 C (3.1 F) | 48 years | 23 of 100 (Routine) |
| 14 March 2026 | Whitman Mission, US | daily low max | 7.2 C (45.0 F) | 1.7 C (3.1 F) | 48 years | 23 of 100 (Routine) |
| 26 February 2026 | Whitman Mission, US | daily rain | 21.6 mm (0.9 in) | 12.7 mm (0.5 in) | 16 years | 20 of 100 (Routine) |
| 17 February 2026 | Whitman Mission, US | daily rain | 15.2 mm (0.6 in) | 0.7 mm (0.03 in) | 36 years | 19 of 100 (Routine) |
| 10 February 2026 | Whitman Mission, US | monthly rain | 32.8 mm (1.3 in) | 6.1 mm (0.24 in) | 31 years | 42 of 100 (Notable) |
Climate Trend
51 complete years, 1963 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1963 | 11.2 C | +0.31 C |
| 1964 | 10.7 C | -0.25 C |
| 1965 | 11.5 C | +0.53 C |
| 1966 | 11.6 C | +0.71 C |
| 1967 | 12.3 C | +1.35 C |
| 1968 | 11.4 C | +0.43 C |
| 1969 | 10.5 C | -0.41 C |
| 1970 | 11.0 C | +0.09 C |
| 1971 | 11.1 C | +0.21 C |
| 1972 | 10.4 C | -0.49 C |
| 1973 | 11.2 C | +0.30 C |
| 1974 | 11.2 C | +0.26 C |
| 1975 | 10.4 C | -0.53 C |
| 1976 | 10.5 C | -0.43 C |
| 1977 | 10.7 C | -0.19 C |
| 1978 | 10.1 C | -0.80 C |
| 1979 | 10.4 C | -0.56 C |
| 1980 | 10.3 C | -0.59 C |
| 1981 | 10.9 C | 0.00 C |
| 1982 | 10.1 C | -0.82 C |
| 1983 | 10.6 C | -0.30 C |
| 1986 | 11.6 C | +0.65 C |
| 1987 | 11.4 C | +0.44 C |
| 1988 | 11.3 C | +0.35 C |
| 1989 | 10.4 C | -0.52 C |
| 1990 | 11.3 C | +0.39 C |
| 1991 | 10.9 C | 0.00 C |
| 1992 | 11.7 C | +0.80 C |
| 1993 | 9.5 C | -1.48 C |
| 1994 | 11.8 C | +0.87 C |
| 1995 | 11.0 C | +0.11 C |
| 1996 | 10.4 C | -0.56 C |
| 1999 | 11.3 C | +0.41 C |
| 2000 | 10.5 C | -0.45 C |
| 2001 | 10.8 C | -0.11 C |
| 2002 | 10.8 C | -0.16 C |
| 2003 | 11.8 C | +0.87 C |
| 2004 | 11.3 C | +0.41 C |
| 2005 | 10.8 C | -0.15 C |
| 2006 | 11.3 C | +0.38 C |
| 2007 | 11.0 C | +0.02 C |
| 2008 | 10.1 C | -0.86 C |
| 2009 | 10.3 C | -0.59 C |
| 2010 | 10.7 C | -0.22 C |
| 2011 | 10.1 C | -0.83 C |
| 2012 | 11.0 C | +0.11 C |
| 2016 | 11.4 C | +0.49 C |
| 2021 | 11.7 C | +0.72 C |
| 2022 | 10.5 C | -0.44 C |
| 2023 | 11.2 C | +0.31 C |
| 2024 | 11.3 C | +0.38 C |
The fitted trend in annual mean temperature here over 1963 to 2024 is -0.01 C (-0.10 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.18 to 0.15) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.01 C (-0.10 to 0.08) per decade | -0.02 F (-0.18 to 0.15) per decade | 1963 to 2024 | 51 | Not clearly different from zero |
| Mean daily maximum | 0.1 C (-0.1 to 0.2) per decade | 0.1 F (-0.1 to 0.3) per decade | 1963 to 2024 | 51 | Not clearly different from zero |
| Mean daily minimum | -0.08 C (-0.16 to 0.01) per decade | -0.14 F (-0.28 to 0.01) per decade | 1963 to 2024 | 51 | 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
1962 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.6 C (114.1 F) | 2021 | 40.6 C (105.1 F) | 65 |
| Coldest night (TNn) | -32.8 C (-27.0 F) | 1968 | -15.6 C (3.9 F) | 65 |
| Wettest day (Rx1day) | 48.3 mm (1.9 in) | 1996 | 23.6 mm (0.9 in) | 65 |
| Wettest five days (Rx5day) | 67.8 mm (2.7 in) | 1991 | 35.6 mm (1.4 in) | 65 |
| Longest dry spell (CDD) | 109 days | 1974 | 42 days | 65 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1962 | 25.6 C (78.1 F) |
| 1963 | 38.9 C (102.0 F) |
| 1964 | 40.6 C (105.1 F) |
| 1965 | 41.1 C (106.0 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 41.7 C (107.1 F) |
| 1968 | 42.8 C (109.0 F) |
| 1969 | 37.2 C (99.0 F) |
| 1970 | 40.0 C (104.0 F) |
| 1971 | 42.2 C (108.0 F) |
| 1972 | 42.2 C (108.0 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 40.0 C (104.0 F) |
| 1975 | 41.1 C (106.0 F) |
| 1976 | 37.8 C (100.0 F) |
| 1977 | 41.1 C (106.0 F) |
| 1978 | 40.6 C (105.1 F) |
| 1979 | 42.2 C (108.0 F) |
| 1980 | 38.9 C (102.0 F) |
| 1981 | 40.0 C (104.0 F) |
| 1982 | 40.6 C (105.1 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 39.4 C (102.9 F) |
| 1985 | 41.1 C (106.0 F) |
| 1986 | 40.6 C (105.1 F) |
| 1987 | 39.4 C (102.9 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 42.8 C (109.0 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 41.7 C (107.1 F) |
| 1993 | 36.7 C (98.1 F) |
| 1994 | 43.3 C (109.9 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 41.7 C (107.1 F) |
| 1997 | 39.4 C (102.9 F) |
| 1998 | 43.3 C (109.9 F) |
| 1999 | 40.0 C (104.0 F) |
| 2000 | 40.6 C (105.1 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 42.2 C (108.0 F) |
| 2003 | 41.1 C (106.0 F) |
| 2004 | 40.0 C (104.0 F) |
| 2005 | 41.7 C (107.1 F) |
| 2006 | 42.2 C (108.0 F) |
| 2007 | 41.7 C (107.1 F) |
| 2008 | 41.1 C (106.0 F) |
| 2009 | 42.2 C (108.0 F) |
| 2010 | 38.9 C (102.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 41.1 C (106.0 F) |
| 2014 | 40.6 C (105.1 F) |
| 2015 | 41.7 C (107.1 F) |
| 2016 | 39.4 C (102.9 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 40.6 C (105.1 F) |
| 2019 | 38.9 C (102.0 F) |
| 2020 | 42.8 C (109.0 F) |
| 2021 | 45.6 C (114.1 F) |
| 2022 | 42.8 C (109.0 F) |
| 2023 | 40.6 C (105.1 F) |
| 2024 | 42.2 C (108.0 F) |
| 2025 | 32.2 C (90.0 F) |
| 2026 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1962 | -8.9 C (16.0 F) |
| 1963 | -20.6 C (-5.1 F) |
| 1964 | -21.1 C (-6.0 F) |
| 1965 | -11.7 C (10.9 F) |
| 1966 | -9.4 C (15.1 F) |
| 1967 | -15.0 C (5.0 F) |
| 1968 | -32.8 C (-27.0 F) |
| 1969 | -26.1 C (-15.0 F) |
| 1970 | -12.2 C (10.0 F) |
| 1971 | -13.9 C (7.0 F) |
| 1972 | -26.1 C (-15.0 F) |
| 1973 | -24.4 C (-11.9 F) |
| 1974 | -26.1 C (-15.0 F) |
| 1975 | -14.4 C (6.1 F) |
| 1976 | -13.3 C (8.1 F) |
| 1977 | -21.1 C (-6.0 F) |
| 1978 | -26.1 C (-15.0 F) |
| 1979 | -26.1 C (-15.0 F) |
| 1980 | -17.2 C (1.0 F) |
| 1981 | -11.7 C (10.9 F) |
| 1982 | -17.8 C (0.0 F) |
| 1983 | -29.4 C (-20.9 F) |
| 1984 | -22.8 C (-9.0 F) |
| 1985 | -27.2 C (-17.0 F) |
| 1986 | -8.3 C (17.1 F) |
| 1987 | -13.9 C (7.0 F) |
| 1988 | -11.7 C (10.9 F) |
| 1989 | -27.8 C (-18.0 F) |
| 1990 | -28.3 C (-18.9 F) |
| 1991 | -10.0 C (14.0 F) |
| 1992 | -10.6 C (12.9 F) |
| 1993 | -22.8 C (-9.0 F) |
| 1994 | -13.9 C (7.0 F) |
| 1995 | -15.6 C (3.9 F) |
| 1996 | -28.9 C (-20.0 F) |
| 1997 | -13.9 C (7.0 F) |
| 1998 | -16.7 C (1.9 F) |
| 1999 | -7.2 C (19.0 F) |
| 2000 | -8.3 C (17.1 F) |
| 2001 | -15.0 C (5.0 F) |
| 2002 | -13.3 C (8.1 F) |
| 2003 | -16.1 C (3.0 F) |
| 2004 | -29.4 C (-20.9 F) |
| 2005 | -12.2 C (10.0 F) |
| 2006 | -13.9 C (7.0 F) |
| 2007 | -14.4 C (6.1 F) |
| 2008 | -23.3 C (-9.9 F) |
| 2009 | -18.3 C (-0.9 F) |
| 2010 | -23.9 C (-11.0 F) |
| 2011 | -12.8 C (9.0 F) |
| 2012 | -11.1 C (12.0 F) |
| 2013 | -17.8 C (0.0 F) |
| 2014 | -15.6 C (3.9 F) |
| 2015 | -11.7 C (10.9 F) |
| 2016 | -21.7 C (-7.1 F) |
| 2017 | -27.2 C (-17.0 F) |
| 2018 | -10.0 C (14.0 F) |
| 2019 | -18.9 C (-2.0 F) |
| 2020 | -13.3 C (8.1 F) |
| 2021 | -16.1 C (3.0 F) |
| 2022 | -18.3 C (-0.9 F) |
| 2023 | -15.6 C (3.9 F) |
| 2024 | -22.8 C (-9.0 F) |
| 2025 | -11.7 C (10.9 F) |
| 2026 | -5.6 C (21.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1962 | 24.4 mm (1.0 in) |
| 1963 | 15.7 mm (0.6 in) |
| 1964 | 27.2 mm (1.1 in) |
| 1965 | 13.7 mm (0.5 in) |
| 1966 | 28.7 mm (1.1 in) |
| 1967 | 17.8 mm (0.7 in) |
| 1968 | 16.0 mm (0.6 in) |
| 1969 | 27.9 mm (1.1 in) |
| 1970 | 19.6 mm (0.8 in) |
| 1971 | 31.5 mm (1.2 in) |
| 1972 | 23.9 mm (0.9 in) |
| 1973 | 21.6 mm (0.9 in) |
| 1974 | 17.8 mm (0.7 in) |
| 1975 | 23.4 mm (0.9 in) |
| 1976 | 16.8 mm (0.7 in) |
| 1977 | 33.0 mm (1.3 in) |
| 1978 | 25.9 mm (1.0 in) |
| 1979 | 26.2 mm (1.0 in) |
| 1980 | 36.1 mm (1.4 in) |
| 1981 | 24.4 mm (1.0 in) |
| 1982 | 38.1 mm (1.5 in) |
| 1983 | 18.5 mm (0.7 in) |
| 1984 | 24.1 mm (0.9 in) |
| 1985 | 16.5 mm (0.6 in) |
| 1986 | 19.1 mm (0.8 in) |
| 1987 | 15.2 mm (0.6 in) |
| 1988 | 26.7 mm (1.1 in) |
| 1989 | 27.9 mm (1.1 in) |
| 1990 | 35.6 mm (1.4 in) |
| 1991 | 27.7 mm (1.1 in) |
| 1992 | 18.8 mm (0.7 in) |
| 1993 | 33.0 mm (1.3 in) |
| 1994 | 32.3 mm (1.3 in) |
| 1995 | 27.9 mm (1.1 in) |
| 1996 | 48.3 mm (1.9 in) |
| 1997 | 20.8 mm (0.8 in) |
| 1998 | 15.2 mm (0.6 in) |
| 1999 | 21.6 mm (0.9 in) |
| 2000 | 38.6 mm (1.5 in) |
| 2001 | 17.8 mm (0.7 in) |
| 2002 | 19.3 mm (0.8 in) |
| 2003 | 23.9 mm (0.9 in) |
| 2004 | 23.6 mm (0.9 in) |
| 2005 | 18.8 mm (0.7 in) |
| 2006 | 19.1 mm (0.8 in) |
| 2007 | 16.0 mm (0.6 in) |
| 2008 | 26.4 mm (1.0 in) |
| 2009 | 26.7 mm (1.1 in) |
| 2010 | 29.7 mm (1.2 in) |
| 2011 | 22.1 mm (0.9 in) |
| 2012 | 18.0 mm (0.7 in) |
| 2013 | 16.8 mm (0.7 in) |
| 2014 | 15.0 mm (0.6 in) |
| 2015 | 29.5 mm (1.2 in) |
| 2016 | 19.6 mm (0.8 in) |
| 2017 | 17.5 mm (0.7 in) |
| 2018 | 16.0 mm (0.6 in) |
| 2019 | 25.4 mm (1.0 in) |
| 2020 | 30.5 mm (1.2 in) |
| 2021 | 28.2 mm (1.1 in) |
| 2022 | 22.4 mm (0.9 in) |
| 2023 | 14.0 mm (0.6 in) |
| 2024 | 18.3 mm (0.7 in) |
| 2025 | 33.0 mm (1.3 in) |
| 2026 | 32.8 mm (1.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1962 | 43.4 mm (1.7 in) |
| 1963 | 28.0 mm (1.1 in) |
| 1964 | 42.5 mm (1.7 in) |
| 1965 | 30.7 mm (1.2 in) |
| 1966 | 40.2 mm (1.6 in) |
| 1967 | 31.8 mm (1.3 in) |
| 1968 | 39.7 mm (1.6 in) |
| 1969 | 36.8 mm (1.4 in) |
| 1970 | 52.6 mm (2.1 in) |
| 1971 | 57.4 mm (2.3 in) |
| 1972 | 34.1 mm (1.3 in) |
| 1973 | 38.4 mm (1.5 in) |
| 1974 | 30.5 mm (1.2 in) |
| 1975 | 49.3 mm (1.9 in) |
| 1976 | 28.6 mm (1.1 in) |
| 1977 | 43.5 mm (1.7 in) |
| 1978 | 37.1 mm (1.5 in) |
| 1979 | 35.4 mm (1.4 in) |
| 1980 | 58.7 mm (2.3 in) |
| 1981 | 45.0 mm (1.8 in) |
| 1982 | 47.8 mm (1.9 in) |
| 1983 | 30.8 mm (1.2 in) |
| 1984 | 36.3 mm (1.4 in) |
| 1985 | 25.5 mm (1.0 in) |
| 1986 | 25.1 mm (1.0 in) |
| 1987 | 18.8 mm (0.7 in) |
| 1988 | 43.5 mm (1.7 in) |
| 1989 | 30.9 mm (1.2 in) |
| 1990 | 51.9 mm (2.0 in) |
| 1991 | 67.8 mm (2.7 in) |
| 1992 | 34.3 mm (1.4 in) |
| 1993 | 49.8 mm (2.0 in) |
| 1994 | 52.9 mm (2.1 in) |
| 1995 | 37.6 mm (1.5 in) |
| 1996 | 58.7 mm (2.3 in) |
| 1997 | 35.6 mm (1.4 in) |
| 1998 | 24.5 mm (1.0 in) |
| 1999 | 29.0 mm (1.1 in) |
| 2000 | 45.2 mm (1.8 in) |
| 2001 | 29.8 mm (1.2 in) |
| 2002 | 35.7 mm (1.4 in) |
| 2003 | 51.6 mm (2.0 in) |
| 2004 | 34.7 mm (1.4 in) |
| 2005 | 43.0 mm (1.7 in) |
| 2006 | 38.2 mm (1.5 in) |
| 2007 | 32.1 mm (1.3 in) |
| 2008 | 37.4 mm (1.5 in) |
| 2009 | 42.2 mm (1.7 in) |
| 2010 | 37.0 mm (1.5 in) |
| 2011 | 29.8 mm (1.2 in) |
| 2012 | 34.4 mm (1.4 in) |
| 2013 | 26.2 mm (1.0 in) |
| 2014 | 20.3 mm (0.8 in) |
| 2015 | 35.8 mm (1.4 in) |
| 2016 | 26.2 mm (1.0 in) |
| 2017 | 35.6 mm (1.4 in) |
| 2018 | 20.0 mm (0.8 in) |
| 2019 | 30.5 mm (1.2 in) |
| 2020 | 8.4 mm (0.33 in) |
| 2021 | 33.5 mm (1.3 in) |
| 2022 | 23.3 mm (0.9 in) |
| 2023 | 19.1 mm (0.8 in) |
| 2024 | 29.8 mm (1.2 in) |
| 2025 | 21.6 mm (0.9 in) |
| 2026 | 32.8 mm (1.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1962 | 21 days |
| 1963 | 32 days |
| 1964 | 41 days |
| 1965 | 32 days |
| 1966 | 42 days |
| 1967 | 80 days |
| 1968 | 42 days |
| 1969 | 81 days |
| 1970 | 39 days |
| 1971 | 23 days |
| 1972 | 54 days |
| 1973 | 47 days |
| 1974 | 109 days |
| 1975 | 39 days |
| 1976 | 36 days |
| 1977 | 43 days |
| 1978 | 55 days |
| 1979 | 43 days |
| 1980 | 39 days |
| 1981 | 62 days |
| 1982 | 21 days |
| 1983 | 32 days |
| 1984 | 36 days |
| 1985 | 52 days |
| 1986 | 42 days |
| 1987 | 78 days |
| 1988 | 67 days |
| 1989 | 32 days |
| 1990 | 46 days |
| 1991 | 76 days |
| 1992 | 28 days |
| 1993 | 50 days |
| 1994 | 58 days |
| 1995 | 23 days |
| 1996 | 40 days |
| 1997 | 35 days |
| 1998 | 21 days |
| 1999 | 49 days |
| 2000 | 57 days |
| 2001 | 56 days |
| 2002 | 53 days |
| 2003 | 72 days |
| 2004 | 38 days |
| 2005 | 63 days |
| 2006 | 67 days |
| 2007 | 30 days |
| 2008 | 47 days |
| 2009 | 34 days |
| 2010 | 30 days |
| 2011 | 90 days |
| 2012 | 46 days |
| 2013 | 20 days |
| 2014 | 24 days |
| 2015 | 89 days |
| 2016 | 28 days |
| 2017 | 74 days |
| 2018 | 65 days |
| 2019 | 20 days |
| 2020 | 5 days |
| 2021 | 33 days |
| 2022 | 9 days |
| 2023 | 14 days |
| 2024 | 26 days |
| 2025 | 10 days |
| 2026 | 50 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
51 years with a frostAcross 51 years with a frost, the median last spring frost at Whitman Mission falls on 9 May and the median first autumn frost on 23 September, which leaves a median of 140 days between them.
Fitted over all years, the growing season changes by +4.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1986 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 9 May | n/a | 8 May | n/a | -2.6 days per decade |
| First autumn frost | 23 September | n/a | 26 September | n/a | +1.6 days per decade |
| Growing days | 140 days | n/a | 149 days | n/a | +4.2 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
50 years, 1963 to 2012A day with at least 23.0 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 48.3 mm (1.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 23.0 mm (0.9 in) | |
| 5 years | 29.7 mm (1.2 in) | |
| 10 years | 34.1 mm (1.3 in) | |
| 25 years | 39.8 mm (1.6 in) | |
| 50 years | 44.0 mm (1.7 in) | |
| 100 years | 48.3 mm (1.9 in) | Longer than the 50 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, 50 years of values from 1963 to 2012.
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: 48.3 mm (1.9 in) in 1996; 38.6 mm (1.5 in) in 2000; 38.1 mm (1.5 in) in 1982.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Whitman Mission, at 1979. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1979 ran 0.2 C (0.4 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1979 | -0.2 | -0.4 | 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
2003 to 2024 against 1961 to 1990Over 2003 to 2024, Whitman Mission had a mean temperature of 11.0 C (51.7 F) and 363.2 mm (14.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Mikkalo 6 W (United States, 160 km away), Lewiston AP (United States, 117 km away) and Snowflake (United States, 1,465 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Mikkalo 6 W | United States | 160 km (99 mi) | 11.0 C (51.7 F) | 266.1 mm (10.5 in) | 0.60 |
| Lewiston AP | United States | 117 km (73 mi) | 11.5 C (52.7 F) | 316.2 mm (12.4 in) | 0.80 |
| Snowflake | United States | 1,465 km (910 mi) | 11.2 C (52.2 F) | 319.5 mm (12.6 in) | 0.85 |
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 (2026-10-14).