Dallesport AP Weather Records (USW00024219)
Record envelope, standing records and threshold days for Dallesport AP (USW00024219), Washington, United States, with 79 years of record.
Key Facts for Dallesport AP
- Dallesport AP (USW00024219) is a weather station in Washington, United States at 45.62 latitude and -121.17 longitude, 71 m (234 ft) above sea level.
- The station reports from 1948 to 2026, 79 years of record.
- 1,464 records set at Dallesport AP still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Dallesport AP set a daily record precipitation of 1.5 mm (0.06 in) on 12 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, 45.62 latitude, -121.17 longitude.
- Elevation: 71 m (234 ft).
- Period of record: 1948 to 2026, 79 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.0 C (68.0 F) | -28.3 C (-18.9 F) | 11.7 C (53.1 F) | -7.2 C (19.0 F) |
| Feb | 21.1 C (70.0 F) | -31.7 C (-25.1 F) | 16.7 C (62.1 F) | -2.8 C (27.0 F) |
| Mar | 26.7 C (80.1 F) | -14.3 C (6.3 F) | 26.1 C (79.0 F) | -2.2 C (28.0 F) |
| Apr | 35.0 C (95.0 F) | -5.0 C (23.0 F) | 27.2 C (81.0 F) | 0.6 C (33.1 F) |
| May | 41.7 C (107.1 F) | -2.2 C (28.0 F) | 32.8 C (91.0 F) | 4.4 C (39.9 F) |
| Jun | 47.8 C (118.0 F) | 2.8 C (37.0 F) | 36.7 C (98.1 F) | 7.2 C (45.0 F) |
| Jul | 44.4 C (111.9 F) | 4.4 C (39.9 F) | 38.9 C (102.0 F) | 12.2 C (54.0 F) |
| Aug | 43.3 C (109.9 F) | 5.6 C (42.1 F) | 38.9 C (102.0 F) | 8.9 C (48.0 F) |
| Sep | 40.6 C (105.1 F) | -1.7 C (28.9 F) | 32.2 C (90.0 F) | 3.3 C (37.9 F) |
| Oct | 32.2 C (90.0 F) | -9.4 C (15.1 F) | 31.1 C (88.0 F) | 4.4 C (39.9 F) |
| Nov | 23.3 C (73.9 F) | -18.3 C (-0.9 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -22.8 C (-9.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1948 | 13 |
| 1949 | 22 |
| 1950 | 36 |
| 1951 | 9 |
| 1952 | 27 |
| 1953 | 18 |
| 1954 | 27 |
| 1955 | 27 |
| 1956 | 20 |
| 1957 | 18 |
| 1958 | 16 |
| 1959 | 17 |
| 1960 | 34 |
| 1961 | 13 |
| 1962 | 27 |
| 1963 | 18 |
| 1964 | 27 |
| 1965 | 19 |
| 1966 | 15 |
| 1967 | 26 |
| 1968 | 31 |
| 1969 | 21 |
| 1970 | 15 |
| 1971 | 21 |
| 1972 | 46 |
| 1973 | 17 |
| 1974 | 30 |
| 1975 | 15 |
| 1976 | 16 |
| 1977 | 22 |
| 1978 | 10 |
| 1979 | 16 |
| 1980 | 12 |
| 1981 | 25 |
| 1982 | 3 |
| 1983 | 30 |
| 1984 | 14 |
| 1985 | 42 |
| 1986 | 22 |
| 1987 | 19 |
| 1988 | 20 |
| 1989 | 13 |
| 1990 | 20 |
| 1991 | 12 |
| 1992 | 20 |
| 1993 | 27 |
| 1994 | 21 |
| 1995 | 15 |
| 1996 | 21 |
| 1997 | 8 |
| 1998 | 25 |
| 1999 | 25 |
| 2000 | 5 |
| 2001 | 9 |
| 2002 | 15 |
| 2003 | 21 |
| 2004 | 4 |
| 2005 | 12 |
| 2006 | 9 |
| 2007 | 6 |
| 2008 | 12 |
| 2009 | 16 |
| 2010 | 3 |
| 2011 | 12 |
| 2012 | 11 |
| 2013 | 18 |
| 2014 | 15 |
| 2015 | 22 |
| 2016 | 19 |
| 2017 | 6 |
| 2018 | 21 |
| 2019 | 23 |
| 2020 | 15 |
| 2021 | 27 |
| 2022 | 28 |
| 2023 | 15 |
| 2024 | 13 |
| 2025 | 19 |
| 2026 | 5 |
All-Time Record Progression
7 new records| Date | Kind | Detail |
|---|---|---|
| 1980-01-08 | Record daily snowfall | Record daily snowfall 39.6 cm (15.6 in) |
| 1980-07-22 | Record high minimum temperature | Record high minimum temperature 24.4 C (75.9 F) |
| 1982-08-08 | Record high minimum temperature | Record high minimum temperature 27.8 C (82.0 F) |
| 1992-07-17 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 2021-06-27 | Record high maximum temperature | Record high maximum temperature 46.1 C (115.0 F) |
| 2021-06-28 | Record high maximum temperature | Record high maximum temperature 47.8 C (118.0 F) |
| 2025-12-18 | Record daily precipitation | Record daily precipitation 55.4 mm (2.2 in) |
Wettest Day of Each Month
Dec: 55.4 mm (2.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 46.2 mm (1.8 in) | 1 January 2009 |
| Feb | 40.4 mm (1.6 in) | 7 February 1996 |
| Mar | 22.1 mm (0.9 in) | 29 March 1983 |
| Apr | 38.6 mm (1.5 in) | 27 April 1990 |
| May | 26.7 mm (1.1 in) | 26 May 1953 |
| Jun | 20.3 mm (0.8 in) | 25 June 2013 |
| Jul | 21.3 mm (0.8 in) | 9 July 1995 |
| Aug | 19.6 mm (0.8 in) | 21 August 1990 |
| Sep | 30.2 mm (1.2 in) | 10 September 1985 |
| Oct | 46.5 mm (1.8 in) | 27 October 1994 |
| Nov | 47.5 mm (1.9 in) | 19 November 1996 |
| Dec | 55.4 mm (2.2 in) | 18 December 2025 |
Period of Record Coverage
1948 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1948 | 184 | 50% | No |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 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 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 305 | 83% | No |
| 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 | 364 | 99% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 361 | 99% | Yes |
| 2025 | 358 | 98% | Yes |
| 2026 | 282 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 September 2026 | Dallesport AP, US | daily rain (Provisional) | 1.5 mm (0.06 in) | 0.5 mm (0.02 in) | 44 years | 20 of 100 (Routine) |
| 6 September 2026 | Dallesport AP, US | daily low max (Provisional) | 18.9 C (66.0 F) | 1.1 C (2.0 F) | 41 years | 21 of 100 (Routine) |
| 4 September 2026 | Dallesport AP, US | daily rain (Tie, Provisional) | 0.5 mm (0.02 in) | tie | 73 years | 7 of 100 (Routine) |
| 2 September 2026 | Dallesport AP, US | daily rain (Provisional) | 4.6 mm (0.18 in) | 1.6 mm (0.06 in) | 47 years | 20 of 100 (Routine) |
| 4 August 2026 | Dallesport AP, US | daily low min | 10.0 C (50.0 F) | 0.6 C (1.1 F) | 72 years | 29 of 100 (Routine) |
| 28 May 2026 | Dallesport AP, US | daily rain | 15.0 mm (0.6 in) | 5.9 mm (0.23 in) | 36 years | 20 of 100 (Routine) |
| 6 May 2026 | Dallesport AP, US | daily high min | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 52 years | 23 of 100 (Routine) |
| 5 May 2026 | Dallesport AP, US | daily high min | 15.0 C (59.0 F) | 1.1 C (2.0 F) | 60 years | 28 of 100 (Routine) |
| 25 April 2026 | Dallesport AP, US | daily low min (Tie) | 0.6 C (33.1 F) | tie | 24 years | 3 of 100 (Routine) |
| 21 April 2026 | Dallesport AP, US | daily high min (Tie) | 12.8 C (55.0 F) | tie | 35 years | 4 of 100 (Routine) |
| 11 April 2026 | Dallesport AP, US | daily high min (Tie) | 11.7 C (53.1 F) | tie | 9 years | 2 of 100 (Routine) |
| 19 March 2026 | Dallesport AP, US | daily high max | 26.1 C (79.0 F) | 1.1 C (2.0 F) | 1 year | 9 of 100 (Routine) |
| 18 March 2026 | Dallesport AP, US | daily high max (Tie) | 24.4 C (75.9 F) | tie | 1 year | 1 of 100 (Routine) |
| 7 March 2026 | Dallesport AP, US | daily high min | 10.0 C (50.0 F) | 1.1 C (2.0 F) | 40 years | 22 of 100 (Routine) |
| 6 March 2026 | Dallesport AP, US | daily high min (Tie) | 7.8 C (46.0 F) | tie | 47 years | 5 of 100 (Routine) |
| 18 December 2025 | Dallesport AP, US | all-time rain | 55.4 mm (2.2 in) | 1.6 mm (0.06 in) | 48 years | 43 of 100 (Notable) |
| 17 December 2025 | Dallesport AP, US | daily high max | 13.9 C (57.0 F) | 0.6 C (1.1 F) | 35 years | 18 of 100 (Routine) |
| 16 December 2025 | Dallesport AP, US | daily high min | 8.9 C (48.0 F) | 1.1 C (2.0 F) | 26 years | 16 of 100 (Routine) |
| 15 December 2025 | Dallesport AP, US | daily high max (Tie) | 17.8 C (64.0 F) | tie | 66 years | 6 of 100 (Routine) |
| 12 December 2025 | Dallesport AP, US | daily high max | 17.8 C (64.0 F) | 2.8 C (5.0 F) | 68 years | 32 of 100 (Routine) |
Climate Trend
76 complete years, 1949 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1949 | 11.4 C | -0.90 C |
| 1950 | 10.7 C | -1.61 C |
| 1951 | 11.6 C | -0.74 C |
| 1952 | 11.5 C | -0.80 C |
| 1953 | 12.5 C | +0.19 C |
| 1954 | 11.0 C | -1.30 C |
| 1955 | 10.6 C | -1.75 C |
| 1956 | 11.4 C | -0.90 C |
| 1957 | 11.4 C | -0.95 C |
| 1958 | 13.4 C | +1.09 C |
| 1959 | 11.5 C | -0.86 C |
| 1960 | 10.4 C | -1.87 C |
| 1961 | 11.4 C | -0.90 C |
| 1962 | 11.7 C | -0.63 C |
| 1963 | 11.9 C | -0.37 C |
| 1964 | 11.1 C | -1.17 C |
| 1965 | 12.3 C | +0.02 C |
| 1966 | 12.6 C | +0.28 C |
| 1967 | 13.9 C | +1.58 C |
| 1968 | 12.8 C | +0.44 C |
| 1969 | 11.5 C | -0.84 C |
| 1970 | 11.7 C | -0.60 C |
| 1971 | 12.0 C | -0.34 C |
| 1972 | 11.2 C | -1.11 C |
| 1973 | 12.1 C | -0.20 C |
| 1974 | 12.6 C | +0.27 C |
| 1975 | 12.0 C | -0.34 C |
| 1976 | 12.1 C | -0.26 C |
| 1977 | 12.6 C | +0.28 C |
| 1978 | 12.2 C | -0.09 C |
| 1979 | 12.1 C | -0.17 C |
| 1980 | 11.8 C | -0.49 C |
| 1981 | 12.4 C | +0.07 C |
| 1982 | 12.3 C | -0.01 C |
| 1983 | 12.3 C | -0.06 C |
| 1984 | 12.0 C | -0.27 C |
| 1985 | 10.9 C | -1.38 C |
| 1986 | 12.4 C | +0.06 C |
| 1987 | 12.9 C | +0.57 C |
| 1988 | 12.8 C | +0.48 C |
| 1989 | 12.2 C | -0.11 C |
| 1990 | 12.9 C | +0.55 C |
| 1991 | 12.4 C | +0.10 C |
| 1992 | 13.4 C | +1.05 C |
| 1993 | 11.0 C | -1.28 C |
| 1994 | 13.3 C | +1.00 C |
| 1995 | 13.1 C | +0.74 C |
| 1996 | 12.4 C | +0.07 C |
| 1997 | 13.4 C | +1.10 C |
| 1998 | 13.7 C | +1.35 C |
| 1999 | 13.2 C | +0.90 C |
| 2001 | 12.5 C | +0.22 C |
| 2002 | 12.3 C | +0.02 C |
| 2003 | 13.1 C | +0.75 C |
| 2004 | 13.0 C | +0.69 C |
| 2005 | 11.9 C | -0.39 C |
| 2006 | 12.1 C | -0.19 C |
| 2007 | 12.0 C | -0.30 C |
| 2008 | 11.7 C | -0.66 C |
| 2009 | 12.0 C | -0.35 C |
| 2010 | 12.6 C | +0.24 C |
| 2011 | 12.0 C | -0.29 C |
| 2012 | 12.6 C | +0.30 C |
| 2013 | 12.5 C | +0.19 C |
| 2014 | 13.0 C | +0.72 C |
| 2015 | 14.3 C | +1.95 C |
| 2016 | 13.3 C | +1.00 C |
| 2017 | 12.2 C | -0.10 C |
| 2018 | 13.4 C | +1.11 C |
| 2019 | 11.5 C | -0.81 C |
| 2020 | 13.0 C | +0.71 C |
| 2021 | 13.9 C | +1.60 C |
| 2022 | 13.6 C | +1.29 C |
| 2023 | 13.2 C | +0.90 C |
| 2024 | 12.9 C | +0.61 C |
| 2025 | 13.5 C | +1.19 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1949 to 2025. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 76 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 | 0.4 F (0.3 to 0.5) per decade | 1949 to 2025 | 76 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.5) per decade | 1949 to 2025 | 76 | Rise |
| Mean daily minimum | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1949 to 2025 | 76 | 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
1948 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 47.8 C (118.0 F) | 2021 | 40.6 C (105.1 F) | 79 |
| Coldest night (TNn) | -31.7 C (-25.1 F) | 1950 | -12.2 C (10.0 F) | 79 |
| Wettest day (Rx1day) | 55.4 mm (2.2 in) | 2025 | 24.9 mm (1.0 in) | 79 |
| Wettest five days (Rx5day) | 170.7 mm (6.7 in) | 1964 | 46.8 mm (1.8 in) | 79 |
| Longest dry spell (CDD) | 128 days | 1970 | 69 days | 79 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1948 | 39.4 C (102.9 F) |
| 1949 | 37.8 C (100.0 F) |
| 1950 | 40.6 C (105.1 F) |
| 1951 | 39.4 C (102.9 F) |
| 1952 | 41.1 C (106.0 F) |
| 1953 | 40.6 C (105.1 F) |
| 1954 | 36.1 C (97.0 F) |
| 1955 | 40.0 C (104.0 F) |
| 1956 | 42.2 C (108.0 F) |
| 1957 | 35.6 C (96.1 F) |
| 1958 | 41.1 C (106.0 F) |
| 1959 | 41.7 C (107.1 F) |
| 1960 | 40.6 C (105.1 F) |
| 1961 | 41.1 C (106.0 F) |
| 1962 | 38.3 C (100.9 F) |
| 1963 | 40.0 C (104.0 F) |
| 1964 | 40.6 C (105.1 F) |
| 1965 | 41.1 C (106.0 F) |
| 1966 | 38.9 C (102.0 F) |
| 1967 | 41.7 C (107.1 F) |
| 1968 | 41.7 C (107.1 F) |
| 1969 | 38.3 C (100.9 F) |
| 1970 | 40.6 C (105.1 F) |
| 1971 | 43.3 C (109.9 F) |
| 1972 | 43.3 C (109.9 F) |
| 1973 | 40.6 C (105.1 F) |
| 1974 | 41.1 C (106.0 F) |
| 1975 | 40.0 C (104.0 F) |
| 1976 | 38.3 C (100.9 F) |
| 1977 | 43.3 C (109.9 F) |
| 1978 | 41.7 C (107.1 F) |
| 1979 | 42.2 C (108.0 F) |
| 1980 | 39.4 C (102.9 F) |
| 1981 | 42.8 C (109.0 F) |
| 1982 | 40.6 C (105.1 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 41.1 C (106.0 F) |
| 1986 | 41.7 C (107.1 F) |
| 1987 | 40.0 C (104.0 F) |
| 1988 | 41.1 C (106.0 F) |
| 1989 | 37.8 C (100.0 F) |
| 1990 | 41.7 C (107.1 F) |
| 1991 | 39.4 C (102.9 F) |
| 1992 | 43.9 C (111.0 F) |
| 1993 | 38.9 C (102.0 F) |
| 1994 | 42.8 C (109.0 F) |
| 1995 | 38.9 C (102.0 F) |
| 1996 | 42.8 C (109.0 F) |
| 1997 | 41.1 C (106.0 F) |
| 1998 | 43.9 C (111.0 F) |
| 1999 | 40.0 C (104.0 F) |
| 2000 | 37.8 C (100.0 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 39.4 C (102.9 F) |
| 2003 | 41.7 C (107.1 F) |
| 2004 | 41.1 C (106.0 F) |
| 2005 | 40.0 C (104.0 F) |
| 2006 | 42.2 C (108.0 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 42.8 C (109.0 F) |
| 2009 | 42.2 C (108.0 F) |
| 2010 | 40.6 C (105.1 F) |
| 2011 | 38.9 C (102.0 F) |
| 2012 | 40.6 C (105.1 F) |
| 2013 | 39.4 C (102.9 F) |
| 2014 | 41.7 C (107.1 F) |
| 2015 | 42.8 C (109.0 F) |
| 2016 | 40.0 C (104.0 F) |
| 2017 | 42.2 C (108.0 F) |
| 2018 | 41.7 C (107.1 F) |
| 2019 | 38.3 C (100.9 F) |
| 2020 | 42.2 C (108.0 F) |
| 2021 | 47.8 C (118.0 F) |
| 2022 | 44.4 C (111.9 F) |
| 2023 | 43.3 C (109.9 F) |
| 2024 | 42.8 C (109.0 F) |
| 2025 | 40.6 C (105.1 F) |
| 2026 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1948 | -11.1 C (12.0 F) |
| 1949 | -20.6 C (-5.1 F) |
| 1950 | -31.7 C (-25.1 F) |
| 1951 | -13.9 C (7.0 F) |
| 1952 | -11.7 C (10.9 F) |
| 1953 | -4.4 C (24.1 F) |
| 1954 | -22.2 C (-8.0 F) |
| 1955 | -17.2 C (1.0 F) |
| 1956 | -18.3 C (-0.9 F) |
| 1957 | -27.2 C (-17.0 F) |
| 1958 | -7.8 C (18.0 F) |
| 1959 | -14.4 C (6.1 F) |
| 1960 | -13.3 C (8.1 F) |
| 1961 | -10.6 C (12.9 F) |
| 1962 | -22.2 C (-8.0 F) |
| 1963 | -17.2 C (1.0 F) |
| 1964 | -18.3 C (-0.9 F) |
| 1965 | -8.9 C (16.0 F) |
| 1966 | -5.6 C (21.9 F) |
| 1967 | -10.0 C (14.0 F) |
| 1968 | -18.3 C (-0.9 F) |
| 1969 | -17.2 C (1.0 F) |
| 1970 | -8.9 C (16.0 F) |
| 1971 | -10.0 C (14.0 F) |
| 1972 | -22.8 C (-9.0 F) |
| 1973 | -14.4 C (6.1 F) |
| 1974 | -18.3 C (-0.9 F) |
| 1975 | -7.2 C (19.0 F) |
| 1976 | -10.6 C (12.9 F) |
| 1977 | -13.3 C (8.1 F) |
| 1978 | -19.4 C (-2.9 F) |
| 1979 | -21.1 C (-6.0 F) |
| 1980 | -18.9 C (-2.0 F) |
| 1981 | -10.0 C (14.0 F) |
| 1982 | -11.1 C (12.0 F) |
| 1983 | -18.3 C (-0.9 F) |
| 1984 | -14.4 C (6.1 F) |
| 1985 | -18.3 C (-0.9 F) |
| 1986 | -6.1 C (21.0 F) |
| 1987 | -10.0 C (14.0 F) |
| 1988 | -10.6 C (12.9 F) |
| 1989 | -20.0 C (-4.0 F) |
| 1990 | -20.6 C (-5.1 F) |
| 1991 | -8.3 C (17.1 F) |
| 1992 | -10.0 C (14.0 F) |
| 1993 | -15.6 C (3.9 F) |
| 1994 | -12.2 C (10.0 F) |
| 1995 | -10.0 C (14.0 F) |
| 1996 | -20.0 C (-4.0 F) |
| 1997 | -8.9 C (16.0 F) |
| 1998 | -13.9 C (7.0 F) |
| 1999 | -5.0 C (23.0 F) |
| 2000 | -6.1 C (21.0 F) |
| 2001 | -5.6 C (21.9 F) |
| 2002 | -10.0 C (14.0 F) |
| 2003 | -7.8 C (18.0 F) |
| 2004 | -15.0 C (5.0 F) |
| 2005 | -9.4 C (15.1 F) |
| 2006 | -11.7 C (10.9 F) |
| 2007 | -11.7 C (10.9 F) |
| 2008 | -14.4 C (6.1 F) |
| 2009 | -15.6 C (3.9 F) |
| 2010 | -11.7 C (10.9 F) |
| 2011 | -12.8 C (9.0 F) |
| 2012 | -8.9 C (16.0 F) |
| 2013 | -19.9 C (-3.8 F) |
| 2014 | -13.2 C (8.2 F) |
| 2015 | -10.5 C (13.1 F) |
| 2016 | -11.0 C (12.2 F) |
| 2017 | -15.5 C (4.1 F) |
| 2018 | -10.5 C (13.1 F) |
| 2019 | -14.3 C (6.3 F) |
| 2020 | -9.3 C (15.3 F) |
| 2021 | -12.1 C (10.2 F) |
| 2022 | -15.5 C (4.1 F) |
| 2023 | -11.0 C (12.2 F) |
| 2024 | -18.8 C (-1.8 F) |
| 2025 | -10.5 C (13.1 F) |
| 2026 | -7.2 C (19.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1948 | 26.7 mm (1.1 in) |
| 1949 | 27.4 mm (1.1 in) |
| 1950 | 18.5 mm (0.7 in) |
| 1951 | 18.3 mm (0.7 in) |
| 1952 | 15.5 mm (0.6 in) |
| 1953 | 31.8 mm (1.3 in) |
| 1954 | 35.6 mm (1.4 in) |
| 1955 | 29.7 mm (1.2 in) |
| 1956 | 31.0 mm (1.2 in) |
| 1957 | 24.6 mm (1.0 in) |
| 1958 | 23.6 mm (0.9 in) |
| 1959 | 23.1 mm (0.9 in) |
| 1960 | 34.0 mm (1.3 in) |
| 1961 | 34.5 mm (1.4 in) |
| 1962 | 16.0 mm (0.6 in) |
| 1963 | 21.1 mm (0.8 in) |
| 1964 | 53.3 mm (2.1 in) |
| 1965 | 21.1 mm (0.8 in) |
| 1966 | 33.3 mm (1.3 in) |
| 1967 | 16.0 mm (0.6 in) |
| 1968 | 36.3 mm (1.4 in) |
| 1969 | 13.0 mm (0.5 in) |
| 1970 | 27.4 mm (1.1 in) |
| 1971 | 26.9 mm (1.1 in) |
| 1972 | 30.7 mm (1.2 in) |
| 1973 | 25.4 mm (1.0 in) |
| 1974 | 24.6 mm (1.0 in) |
| 1975 | 32.0 mm (1.3 in) |
| 1976 | 17.3 mm (0.7 in) |
| 1977 | 53.8 mm (2.1 in) |
| 1978 | 16.8 mm (0.7 in) |
| 1979 | 23.6 mm (0.9 in) |
| 1980 | 36.1 mm (1.4 in) |
| 1981 | 24.9 mm (1.0 in) |
| 1982 | 29.7 mm (1.2 in) |
| 1983 | 26.7 mm (1.1 in) |
| 1984 | 38.9 mm (1.5 in) |
| 1985 | 30.2 mm (1.2 in) |
| 1986 | 14.0 mm (0.6 in) |
| 1987 | 36.8 mm (1.4 in) |
| 1988 | 19.6 mm (0.8 in) |
| 1989 | 28.4 mm (1.1 in) |
| 1990 | 38.6 mm (1.5 in) |
| 1991 | 24.1 mm (0.9 in) |
| 1992 | 20.6 mm (0.8 in) |
| 1993 | 14.5 mm (0.6 in) |
| 1994 | 46.5 mm (1.8 in) |
| 1995 | 25.7 mm (1.0 in) |
| 1996 | 47.5 mm (1.9 in) |
| 1997 | 34.0 mm (1.3 in) |
| 1998 | 32.3 mm (1.3 in) |
| 1999 | 22.6 mm (0.9 in) |
| 2000 | 19.8 mm (0.8 in) |
| 2001 | 21.6 mm (0.9 in) |
| 2002 | 16.3 mm (0.6 in) |
| 2003 | 24.9 mm (1.0 in) |
| 2004 | 19.6 mm (0.8 in) |
| 2005 | 41.9 mm (1.6 in) |
| 2006 | 23.9 mm (0.9 in) |
| 2007 | 20.1 mm (0.8 in) |
| 2008 | 18.3 mm (0.7 in) |
| 2009 | 46.2 mm (1.8 in) |
| 2010 | 29.0 mm (1.1 in) |
| 2011 | 21.8 mm (0.9 in) |
| 2012 | 23.4 mm (0.9 in) |
| 2013 | 30.2 mm (1.2 in) |
| 2014 | 22.6 mm (0.9 in) |
| 2015 | 41.4 mm (1.6 in) |
| 2016 | 15.5 mm (0.6 in) |
| 2017 | 16.0 mm (0.6 in) |
| 2018 | 24.4 mm (1.0 in) |
| 2019 | 25.1 mm (1.0 in) |
| 2020 | 21.6 mm (0.9 in) |
| 2021 | 30.2 mm (1.2 in) |
| 2022 | 17.8 mm (0.7 in) |
| 2023 | 22.9 mm (0.9 in) |
| 2024 | 21.3 mm (0.8 in) |
| 2025 | 55.4 mm (2.2 in) |
| 2026 | 15.0 mm (0.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1948 | 76.5 mm (3.0 in) |
| 1949 | 37.5 mm (1.5 in) |
| 1950 | 46.0 mm (1.8 in) |
| 1951 | 42.4 mm (1.7 in) |
| 1952 | 26.6 mm (1.0 in) |
| 1953 | 64.3 mm (2.5 in) |
| 1954 | 49.6 mm (2.0 in) |
| 1955 | 48.6 mm (1.9 in) |
| 1956 | 69.1 mm (2.7 in) |
| 1957 | 50.1 mm (2.0 in) |
| 1958 | 49.5 mm (1.9 in) |
| 1959 | 37.2 mm (1.5 in) |
| 1960 | 53.9 mm (2.1 in) |
| 1961 | 69.8 mm (2.7 in) |
| 1962 | 43.7 mm (1.7 in) |
| 1963 | 50.8 mm (2.0 in) |
| 1964 | 170.7 mm (6.7 in) |
| 1965 | 39.9 mm (1.6 in) |
| 1966 | 76.3 mm (3.0 in) |
| 1967 | 29.8 mm (1.2 in) |
| 1968 | 46.6 mm (1.8 in) |
| 1969 | 43.6 mm (1.7 in) |
| 1970 | 73.8 mm (2.9 in) |
| 1971 | 59.4 mm (2.3 in) |
| 1972 | 54.6 mm (2.1 in) |
| 1973 | 62.7 mm (2.5 in) |
| 1974 | 52.9 mm (2.1 in) |
| 1975 | 51.3 mm (2.0 in) |
| 1976 | 29.7 mm (1.2 in) |
| 1977 | 104.6 mm (4.1 in) |
| 1978 | 37.1 mm (1.5 in) |
| 1979 | 47.8 mm (1.9 in) |
| 1980 | 82.1 mm (3.2 in) |
| 1981 | 43.7 mm (1.7 in) |
| 1982 | 35.2 mm (1.4 in) |
| 1983 | 50.6 mm (2.0 in) |
| 1984 | 46.8 mm (1.8 in) |
| 1985 | 38.3 mm (1.5 in) |
| 1986 | 43.2 mm (1.7 in) |
| 1987 | 59.7 mm (2.4 in) |
| 1988 | 41.2 mm (1.6 in) |
| 1989 | 31.2 mm (1.2 in) |
| 1990 | 44.3 mm (1.7 in) |
| 1991 | 38.0 mm (1.5 in) |
| 1992 | 45.6 mm (1.8 in) |
| 1993 | 28.4 mm (1.1 in) |
| 1994 | 83.6 mm (3.3 in) |
| 1995 | 66.2 mm (2.6 in) |
| 1996 | 90.0 mm (3.5 in) |
| 1997 | 75.4 mm (3.0 in) |
| 1998 | 56.1 mm (2.2 in) |
| 1999 | 35.1 mm (1.4 in) |
| 2000 | 52.8 mm (2.1 in) |
| 2001 | 38.9 mm (1.5 in) |
| 2002 | 39.0 mm (1.5 in) |
| 2003 | 44.2 mm (1.7 in) |
| 2004 | 46.2 mm (1.8 in) |
| 2005 | 99.9 mm (3.9 in) |
| 2006 | 79.3 mm (3.1 in) |
| 2007 | 39.1 mm (1.5 in) |
| 2008 | 40.5 mm (1.6 in) |
| 2009 | 70.2 mm (2.8 in) |
| 2010 | 50.4 mm (2.0 in) |
| 2011 | 52.3 mm (2.1 in) |
| 2012 | 58.2 mm (2.3 in) |
| 2013 | 32.0 mm (1.3 in) |
| 2014 | 38.2 mm (1.5 in) |
| 2015 | 62.2 mm (2.4 in) |
| 2016 | 27.8 mm (1.1 in) |
| 2017 | 31.3 mm (1.2 in) |
| 2018 | 33.0 mm (1.3 in) |
| 2019 | 49.0 mm (1.9 in) |
| 2020 | 38.5 mm (1.5 in) |
| 2021 | 44.9 mm (1.8 in) |
| 2022 | 36.5 mm (1.4 in) |
| 2023 | 44.6 mm (1.8 in) |
| 2024 | 49.7 mm (2.0 in) |
| 2025 | 73.0 mm (2.9 in) |
| 2026 | 28.2 mm (1.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1948 | 30 days |
| 1949 | 52 days |
| 1950 | 99 days |
| 1951 | 82 days |
| 1952 | 70 days |
| 1953 | 54 days |
| 1954 | 65 days |
| 1955 | 43 days |
| 1956 | 44 days |
| 1957 | 87 days |
| 1958 | 77 days |
| 1959 | 74 days |
| 1960 | 67 days |
| 1961 | 51 days |
| 1962 | 69 days |
| 1963 | 107 days |
| 1964 | 75 days |
| 1965 | 40 days |
| 1966 | 64 days |
| 1967 | 99 days |
| 1968 | 54 days |
| 1969 | 85 days |
| 1970 | 128 days |
| 1971 | 66 days |
| 1972 | 39 days |
| 1973 | 91 days |
| 1974 | 102 days |
| 1975 | 41 days |
| 1976 | 39 days |
| 1977 | 51 days |
| 1978 | 48 days |
| 1979 | 60 days |
| 1980 | 65 days |
| 1981 | 94 days |
| 1982 | 32 days |
| 1983 | 47 days |
| 1984 | 77 days |
| 1985 | 93 days |
| 1986 | 55 days |
| 1987 | 78 days |
| 1988 | 102 days |
| 1989 | 30 days |
| 1990 | 45 days |
| 1991 | 77 days |
| 1992 | 60 days |
| 1993 | 86 days |
| 1994 | 102 days |
| 1995 | 31 days |
| 1996 | 81 days |
| 1997 | 80 days |
| 1998 | 85 days |
| 1999 | 36 days |
| 2000 | 49 days |
| 2001 | 33 days |
| 2002 | 84 days |
| 2003 | 127 days |
| 2004 | 40 days |
| 2005 | 69 days |
| 2006 | 77 days |
| 2007 | 75 days |
| 2008 | 44 days |
| 2009 | 92 days |
| 2010 | 70 days |
| 2011 | 69 days |
| 2012 | 110 days |
| 2013 | 44 days |
| 2014 | 34 days |
| 2015 | 82 days |
| 2016 | 60 days |
| 2017 | 58 days |
| 2018 | 110 days |
| 2019 | 32 days |
| 2020 | 111 days |
| 2021 | 87 days |
| 2022 | 72 days |
| 2023 | 51 days |
| 2024 | 62 days |
| 2025 | 80 days |
| 2026 | 53 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
76 years with a frostAcross 76 years with a frost, the median last spring frost at Dallesport AP falls on 15 April and the median first autumn frost on 22 October, which leaves a median of 190 days between them.
In 1995 to 2025 the median growing season was 190 days. That is 4 days more than in 1949 to 1978.
Fitted over all years, the growing season changes by +1.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1949 to 1978) | Recent period (1995 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 April | 18 April | 15 April | 3 days earlier | -0.2 days per decade |
| First autumn frost | 22 October | 20 October | 24 October | 4 days later | +1.3 days per decade |
| Growing days | 190 days | 186 days | 190 days | 4 days more | +1.5 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
76 years, 1949 to 2025A day with at least 25.5 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 60.6 mm (2.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 25.5 mm (1.0 in) | |
| 5 years | 34.2 mm (1.3 in) | |
| 10 years | 40.2 mm (1.6 in) | |
| 25 years | 48.2 mm (1.9 in) | |
| 50 years | 54.3 mm (2.1 in) | |
| 100 years | 60.6 mm (2.4 in) | Longer than the 76 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, 76 years of values from 1949 to 2025.
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: 55.4 mm (2.2 in) in 2025; 53.8 mm (2.1 in) in 1977; 53.3 mm (2.1 in) in 1964.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Dallesport AP, at 1963. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1963 ran 0.4 C (0.8 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1963 | +0.4 | +0.8 | 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
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Dallesport AP had a mean temperature of 13.0 C (55.4 F) and 307.4 mm (12.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Riggins (United States, 373 km away), Colorado City (United States, 1,177 km away) and Dilia (United States, 1,785 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Riggins | United States | 373 km (232 mi) | 12.6 C (54.7 F) | 388.0 mm (15.3 in) | 0.75 |
| Colorado City | United States | 1,177 km (731 mi) | 12.7 C (54.9 F) | 319.0 mm (12.6 in) | 0.77 |
| Dilia | United States | 1,785 km (1,109 mi) | 12.8 C (55.0 F) | 377.5 mm (14.9 in) | 0.83 |
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-16).