Dworshak Fish Hatchery Weather Records (USC00102845)
Record envelope, standing records and threshold days for Dworshak Fish Hatchery (USC00102845), Idaho, United States, with 61 years of record.
Key Facts for Dworshak Fish Hatchery
- Dworshak Fish Hatchery (USC00102845) is a weather station in Idaho, United States at 46.50 latitude and -116.32 longitude, 303 m (995 ft) above sea level.
- The station reports from 1966 to 2026, 61 years of record.
- 1,464 records set at Dworshak Fish Hatchery still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Dworshak Fish Hatchery tied a daily record high maximum temperature of 30.0 C (86.0 F) on 5 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Idaho, United States, 46.50 latitude, -116.32 longitude.
- Elevation: 303 m (995 ft).
- Period of record: 1966 to 2026, 61 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
7 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 16.1 C (61.0 F) | -23.9 C (-11.0 F) | 10.6 C (51.1 F) | -6.7 C (19.9 F) |
| Feb | 20.0 C (68.0 F) | -20.0 C (-4.0 F) | 14.4 C (57.9 F) | -2.2 C (28.0 F) |
| Mar | 27.8 C (82.0 F) | -12.2 C (10.0 F) | 22.2 C (72.0 F) | -2.2 C (28.0 F) |
| Apr | 35.0 C (95.0 F) | -5.0 C (23.0 F) | 29.4 C (84.9 F) | 0.0 C (32.0 F) |
| May | 40.0 C (104.0 F) | -3.9 C (25.0 F) | 32.8 C (91.0 F) | 5.0 C (41.0 F) |
| Jun | 44.4 C (111.9 F) | 1.7 C (35.1 F) | 35.0 C (95.0 F) | 6.7 C (44.1 F) |
| Jul | 43.9 C (111.0 F) | 2.8 C (37.0 F) | 37.8 C (100.0 F) | 9.4 C (48.9 F) |
| Aug | 42.8 C (109.0 F) | 3.9 C (39.0 F) | 40.0 C (104.0 F) | 7.8 C (46.0 F) |
| Sep | 41.7 C (107.1 F) | -2.8 C (27.0 F) | 32.2 C (90.0 F) | 4.4 C (39.9 F) |
| Oct | 32.2 C (90.0 F) | -9.4 C (15.1 F) | 30.0 C (86.0 F) | 7.2 C (45.0 F) |
| Nov | 20.6 C (69.1 F) | -17.2 C (1.0 F) | n/a | n/a |
| Dec | 16.1 C (61.0 F) | -26.1 C (-15.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1966 | 1 |
| 1967 | 34 |
| 1968 | 35 |
| 1969 | 35 |
| 1970 | 31 |
| 1971 | 38 |
| 1972 | 41 |
| 1973 | 27 |
| 1974 | 26 |
| 1975 | 34 |
| 1976 | 25 |
| 1977 | 25 |
| 1978 | 15 |
| 1979 | 33 |
| 1980 | 30 |
| 1981 | 22 |
| 1982 | 15 |
| 1983 | 39 |
| 1984 | 34 |
| 1985 | 52 |
| 1986 | 33 |
| 1987 | 35 |
| 1988 | 27 |
| 1989 | 21 |
| 1990 | 36 |
| 1991 | 12 |
| 1992 | 35 |
| 1993 | 19 |
| 1994 | 34 |
| 1995 | 21 |
| 1996 | 28 |
| 1997 | 7 |
| 1998 | 25 |
| 1999 | 26 |
| 2000 | 9 |
| 2001 | 11 |
| 2002 | 26 |
| 2003 | 28 |
| 2004 | 21 |
| 2005 | 15 |
| 2006 | 19 |
| 2007 | 14 |
| 2008 | 26 |
| 2009 | 29 |
| 2010 | 20 |
| 2011 | 16 |
| 2012 | 13 |
| 2013 | 13 |
| 2014 | 28 |
| 2015 | 15 |
| 2016 | 24 |
| 2017 | 12 |
| 2018 | 15 |
| 2019 | 17 |
| 2020 | 23 |
| 2021 | 24 |
| 2022 | 16 |
| 2023 | 16 |
| 2024 | 18 |
| 2025 | 37 |
| 2026 | 8 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 2010-12-27 | Record daily precipitation | Record daily precipitation 63.5 mm (2.5 in) |
| 2015-06-28 | Record high minimum temperature | Record high minimum temperature 22.8 C (73.0 F) |
| 2021-06-29 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 2022-01-06 | Record daily snowfall | Record daily snowfall 35.6 cm (14.0 in) |
Wettest Day of Each Month
Dec: 63.5 mm (2.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 40.1 mm (1.6 in) | 26 January 1970 |
| Feb | 39.4 mm (1.6 in) | 12 February 1981 |
| Mar | 47.0 mm (1.9 in) | 16 March 2026 |
| Apr | 47.0 mm (1.9 in) | 18 April 1976 |
| May | 50.5 mm (2.0 in) | 30 May 1985 |
| Jun | 48.3 mm (1.9 in) | 14 June 1970 |
| Jul | 38.9 mm (1.5 in) | 1 July 1997 |
| Aug | 33.0 mm (1.3 in) | 13 August 1978 |
| Sep | 28.4 mm (1.1 in) | 1 September 1984 |
| Oct | 49.3 mm (1.9 in) | 1 October 2000 |
| Nov | 44.5 mm (1.8 in) | 19 November 1996 |
| Dec | 63.5 mm (2.5 in) | 27 December 2010 |
Period of Record Coverage
1966 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1966 | 31 | 8% | No |
| 1967 | 332 | 91% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 362 | 99% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 363 | 99% | Yes |
| 1975 | 358 | 98% | Yes |
| 1976 | 360 | 98% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 361 | 99% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 362 | 99% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 363 | 99% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 362 | 99% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 362 | 99% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 364 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 332 | 91% | Yes |
| 2014 | 332 | 91% | Yes |
| 2015 | 327 | 90% | No |
| 2016 | 350 | 96% | Yes |
| 2017 | 332 | 91% | Yes |
| 2018 | 314 | 86% | No |
| 2019 | 365 | 100% | Yes |
| 2020 | 355 | 97% | Yes |
| 2021 | 328 | 90% | No |
| 2022 | 325 | 89% | No |
| 2023 | 350 | 96% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 351 | 96% | Yes |
| 2026 | 264 | 72% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 5 October 2026 | Dworshak Fish Hatchery, US | daily high max (Tie, Provisional) | 30.0 C (86.0 F) | tie | 32 years | 3 of 100 (Routine) |
| 26 September 2026 | Dworshak Fish Hatchery, US | daily high min (Provisional) | 12.2 C (54.0 F) | 0.5 C (0.9 F) | 24 years | 14 of 100 (Routine) |
| 25 September 2026 | Dworshak Fish Hatchery, US | daily high min (Tie, Provisional) | 11.1 C (52.0 F) | tie | 56 years | 5 of 100 (Routine) |
| 20 September 2026 | Dworshak Fish Hatchery, US | daily high min (Provisional) | 13.9 C (57.0 F) | 1.1 C (2.0 F) | 59 years | 26 of 100 (Routine) |
| 9 September 2026 | Dworshak Fish Hatchery, US | daily low max (Provisional) | 10.6 C (51.1 F) | 2.7 C (4.9 F) | 23 years | 16 of 100 (Routine) |
| 27 August 2026 | Dworshak Fish Hatchery, US | daily high max (Provisional) | 38.9 C (102.0 F) | 0.6 C (1.1 F) | 55 years | 23 of 100 (Routine) |
| 24 August 2026 | Dworshak Fish Hatchery, US | daily high min (Provisional) | 18.9 C (66.0 F) | 1.7 C (3.1 F) | 56 years | 29 of 100 (Routine) |
| 23 August 2026 | Dworshak Fish Hatchery, US | daily high max (Provisional) | 40.0 C (104.0 F) | 0.6 C (1.1 F) | 56 years | 24 of 100 (Routine) |
| 22 August 2026 | Dworshak Fish Hatchery, US | daily high min (Tie, Provisional) | 16.7 C (62.1 F) | tie | 43 years | 4 of 100 (Routine) |
| 22 August 2026 | Dworshak Fish Hatchery, US | daily high max (Tie, Provisional) | 40.0 C (104.0 F) | tie | 20 years | 3 of 100 (Routine) |
| 21 August 2026 | Dworshak Fish Hatchery, US | daily high max (Tie, Provisional) | 39.4 C (102.9 F) | tie | 59 years | 5 of 100 (Routine) |
| 26 July 2026 | Dworshak Fish Hatchery, US | daily high min | 19.4 C (66.9 F) | 1.1 C (2.0 F) | 44 years | 23 of 100 (Routine) |
| 25 July 2026 | Dworshak Fish Hatchery, US | daily high min (Tie) | 19.4 C (66.9 F) | tie | 56 years | 5 of 100 (Routine) |
| 23 July 2026 | Dworshak Fish Hatchery, US | daily high min | 20.0 C (68.0 F) | 0.6 C (1.1 F) | 20 years | 14 of 100 (Routine) |
| 15 July 2026 | Dworshak Fish Hatchery, US | daily high min | 18.3 C (64.9 F) | 1.1 C (2.0 F) | 36 years | 21 of 100 (Routine) |
| 12 April 2026 | Dworshak Fish Hatchery, US | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 44 years | 20 of 100 (Routine) |
| 7 April 2026 | Dworshak Fish Hatchery, US | daily high max | 26.7 C (80.1 F) | 1.1 C (2.0 F) | 48 years | 22 of 100 (Routine) |
| 25 March 2026 | Dworshak Fish Hatchery, US | daily rain | 18.0 mm (0.7 in) | 5.8 mm (0.23 in) | 16 years | 20 of 100 (Routine) |
| 20 March 2026 | Dworshak Fish Hatchery, US | daily high min | 7.8 C (46.0 F) | 1.1 C (2.0 F) | 28 years | 17 of 100 (Routine) |
| 19 March 2026 | Dworshak Fish Hatchery, US | daily high min | 6.7 C (44.1 F) | 0.6 C (1.1 F) | 28 years | 16 of 100 (Routine) |
Climate Trend
49 complete years, 1968 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1968 | 11.1 C | +0.00 C |
| 1969 | 11.1 C | +0.05 C |
| 1970 | 11.2 C | +0.10 C |
| 1971 | 10.7 C | -0.37 C |
| 1972 | 10.5 C | -0.52 C |
| 1973 | 11.1 C | +0.08 C |
| 1974 | 11.1 C | -0.01 C |
| 1975 | 10.1 C | -0.96 C |
| 1976 | 10.6 C | -0.45 C |
| 1977 | 10.9 C | -0.20 C |
| 1978 | 10.5 C | -0.55 C |
| 1979 | 10.6 C | -0.43 C |
| 1980 | 10.7 C | -0.36 C |
| 1981 | 11.4 C | +0.33 C |
| 1982 | 10.7 C | -0.32 C |
| 1983 | 11.4 C | +0.29 C |
| 1984 | 10.3 C | -0.74 C |
| 1985 | 9.7 C | -1.32 C |
| 1986 | 11.5 C | +0.48 C |
| 1987 | 12.1 C | +0.99 C |
| 1988 | 11.6 C | +0.58 C |
| 1989 | 11.2 C | +0.11 C |
| 1990 | 11.7 C | +0.66 C |
| 1991 | 11.4 C | +0.31 C |
| 1992 | 12.5 C | +1.41 C |
| 1993 | 10.8 C | -0.27 C |
| 1994 | 12.0 C | +0.96 C |
| 1995 | 11.3 C | +0.20 C |
| 1996 | 10.9 C | -0.18 C |
| 1997 | 11.6 C | +0.51 C |
| 1998 | 12.4 C | +1.37 C |
| 1999 | 11.1 C | +0.04 C |
| 2000 | 10.9 C | -0.12 C |
| 2001 | 11.3 C | +0.20 C |
| 2002 | 10.7 C | -0.34 C |
| 2003 | 11.5 C | +0.48 C |
| 2004 | 11.2 C | +0.17 C |
| 2005 | 10.9 C | -0.14 C |
| 2006 | 11.3 C | +0.26 C |
| 2007 | 11.2 C | +0.15 C |
| 2008 | 10.0 C | -1.11 C |
| 2009 | 10.2 C | -0.87 C |
| 2010 | 10.7 C | -0.36 C |
| 2011 | 10.1 C | -1.00 C |
| 2012 | 11.0 C | -0.09 C |
| 2019 | 10.4 C | -0.63 C |
| 2020 | 10.9 C | -0.19 C |
| 2023 | 11.7 C | +0.64 C |
| 2024 | 12.2 C | +1.10 C |
The fitted trend in annual mean temperature here over 1968 to 2024 is 0.05 C (-0.07 to 0.16) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 49 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 (-0.07 to 0.16) per decade | 0.1 F (-0.1 to 0.3) per decade | 1968 to 2024 | 49 | Not clearly different from zero |
| Mean daily maximum | 0.1 C (-0.1 to 0.2) per decade | 0.1 F (-0.2 to 0.4) per decade | 1968 to 2024 | 49 | Not clearly different from zero |
| Mean daily minimum | 0.04 C (-0.06 to 0.14) per decade | 0.1 F (-0.1 to 0.3) per decade | 1968 to 2024 | 49 | 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
1966 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 2021 | 40.0 C (104.0 F) | 61 |
| Coldest night (TNn) | -26.1 C (-15.0 F) | 1968 | -13.9 C (7.0 F) | 61 |
| Wettest day (Rx1day) | 63.5 mm (2.5 in) | 2010 | 30.7 mm (1.2 in) | 61 |
| Wettest five days (Rx5day) | 112.7 mm (4.4 in) | 2010 | 55.9 mm (2.2 in) | 61 |
| Longest dry spell (CDD) | 83 days | 2012 | 33 days | 61 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1966 | 11.1 C (52.0 F) |
| 1967 | 43.9 C (111.0 F) |
| 1968 | 40.6 C (105.1 F) |
| 1969 | 42.8 C (109.0 F) |
| 1970 | 40.6 C (105.1 F) |
| 1971 | 41.1 C (106.0 F) |
| 1972 | 40.0 C (104.0 F) |
| 1973 | 40.6 C (105.1 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 41.7 C (107.1 F) |
| 1976 | 37.2 C (99.0 F) |
| 1977 | 43.3 C (109.9 F) |
| 1978 | 38.9 C (102.0 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 40.0 C (104.0 F) |
| 1981 | 40.6 C (105.1 F) |
| 1982 | 40.0 C (104.0 F) |
| 1983 | 41.7 C (107.1 F) |
| 1984 | 42.2 C (108.0 F) |
| 1985 | 41.1 C (106.0 F) |
| 1986 | 42.2 C (108.0 F) |
| 1987 | 39.4 C (102.9 F) |
| 1988 | 41.1 C (106.0 F) |
| 1989 | 38.9 C (102.0 F) |
| 1990 | 40.6 C (105.1 F) |
| 1991 | 38.9 C (102.0 F) |
| 1992 | 41.7 C (107.1 F) |
| 1993 | 40.0 C (104.0 F) |
| 1994 | 41.7 C (107.1 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 41.7 C (107.1 F) |
| 1997 | 39.4 C (102.9 F) |
| 1998 | 42.2 C (108.0 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 39.4 C (102.9 F) |
| 2001 | 41.1 C (106.0 F) |
| 2002 | 41.7 C (107.1 F) |
| 2003 | 40.0 C (104.0 F) |
| 2004 | 38.9 C (102.0 F) |
| 2005 | 40.0 C (104.0 F) |
| 2006 | 40.6 C (105.1 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 40.6 C (105.1 F) |
| 2009 | 40.0 C (104.0 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 38.9 C (102.0 F) |
| 2014 | 39.4 C (102.9 F) |
| 2015 | 42.8 C (109.0 F) |
| 2016 | 37.8 C (100.0 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 41.7 C (107.1 F) |
| 2019 | 37.8 C (100.0 F) |
| 2020 | 41.1 C (106.0 F) |
| 2021 | 44.4 C (111.9 F) |
| 2022 | 41.1 C (106.0 F) |
| 2023 | 41.7 C (107.1 F) |
| 2024 | 42.8 C (109.0 F) |
| 2025 | 39.4 C (102.9 F) |
| 2026 | 40.0 C (104.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1966 | -4.4 C (24.1 F) |
| 1967 | -12.8 C (9.0 F) |
| 1968 | -26.1 C (-15.0 F) |
| 1969 | -16.7 C (1.9 F) |
| 1970 | -13.3 C (8.1 F) |
| 1971 | -11.1 C (12.0 F) |
| 1972 | -18.9 C (-2.0 F) |
| 1973 | -16.7 C (1.9 F) |
| 1974 | -18.3 C (-0.9 F) |
| 1975 | -12.8 C (9.0 F) |
| 1976 | -12.8 C (9.0 F) |
| 1977 | -12.2 C (10.0 F) |
| 1978 | -19.4 C (-2.9 F) |
| 1979 | -23.9 C (-11.0 F) |
| 1980 | -16.7 C (1.9 F) |
| 1981 | -15.6 C (3.9 F) |
| 1982 | -18.9 C (-2.0 F) |
| 1983 | -23.3 C (-9.9 F) |
| 1984 | -14.4 C (6.1 F) |
| 1985 | -17.2 C (1.0 F) |
| 1986 | -11.7 C (10.9 F) |
| 1987 | -15.0 C (5.0 F) |
| 1988 | -13.9 C (7.0 F) |
| 1989 | -17.2 C (1.0 F) |
| 1990 | -21.1 C (-6.0 F) |
| 1991 | -13.3 C (8.1 F) |
| 1992 | -12.2 C (10.0 F) |
| 1993 | -16.1 C (3.0 F) |
| 1994 | -7.8 C (18.0 F) |
| 1995 | -11.7 C (10.9 F) |
| 1996 | -19.4 C (-2.9 F) |
| 1997 | -12.2 C (10.0 F) |
| 1998 | -16.7 C (1.9 F) |
| 1999 | -5.6 C (21.9 F) |
| 2000 | -7.8 C (18.0 F) |
| 2001 | -7.8 C (18.0 F) |
| 2002 | -8.9 C (16.0 F) |
| 2003 | -12.2 C (10.0 F) |
| 2004 | -17.8 C (0.0 F) |
| 2005 | -13.9 C (7.0 F) |
| 2006 | -13.9 C (7.0 F) |
| 2007 | -16.7 C (1.9 F) |
| 2008 | -18.3 C (-0.9 F) |
| 2009 | -16.1 C (3.0 F) |
| 2010 | -12.8 C (9.0 F) |
| 2011 | -11.7 C (10.9 F) |
| 2012 | -7.8 C (18.0 F) |
| 2013 | -7.8 C (18.0 F) |
| 2014 | -16.7 C (1.9 F) |
| 2015 | -11.1 C (12.0 F) |
| 2016 | -13.3 C (8.1 F) |
| 2017 | -17.2 C (1.0 F) |
| 2018 | -10.6 C (12.9 F) |
| 2019 | -12.2 C (10.0 F) |
| 2020 | -9.4 C (15.1 F) |
| 2021 | -8.3 C (17.1 F) |
| 2022 | -17.2 C (1.0 F) |
| 2023 | -13.3 C (8.1 F) |
| 2024 | -20.6 C (-5.1 F) |
| 2025 | -15.6 C (3.9 F) |
| 2026 | -6.7 C (19.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1966 | 16.0 mm (0.6 in) |
| 1967 | 24.6 mm (1.0 in) |
| 1968 | 33.0 mm (1.3 in) |
| 1969 | 22.1 mm (0.9 in) |
| 1970 | 48.3 mm (1.9 in) |
| 1971 | 26.7 mm (1.1 in) |
| 1972 | 26.2 mm (1.0 in) |
| 1973 | 28.7 mm (1.1 in) |
| 1974 | 26.4 mm (1.0 in) |
| 1975 | 38.1 mm (1.5 in) |
| 1976 | 47.0 mm (1.9 in) |
| 1977 | 56.1 mm (2.2 in) |
| 1978 | 33.0 mm (1.3 in) |
| 1979 | 49.5 mm (1.9 in) |
| 1980 | 46.0 mm (1.8 in) |
| 1981 | 39.4 mm (1.6 in) |
| 1982 | 25.4 mm (1.0 in) |
| 1983 | 25.4 mm (1.0 in) |
| 1984 | 28.4 mm (1.1 in) |
| 1985 | 50.5 mm (2.0 in) |
| 1986 | 21.6 mm (0.9 in) |
| 1987 | 20.3 mm (0.8 in) |
| 1988 | 17.8 mm (0.7 in) |
| 1989 | 30.7 mm (1.2 in) |
| 1990 | 33.0 mm (1.3 in) |
| 1991 | 30.5 mm (1.2 in) |
| 1992 | 28.7 mm (1.1 in) |
| 1993 | 23.4 mm (0.9 in) |
| 1994 | 39.9 mm (1.6 in) |
| 1995 | 37.8 mm (1.5 in) |
| 1996 | 44.5 mm (1.8 in) |
| 1997 | 38.9 mm (1.5 in) |
| 1998 | 30.7 mm (1.2 in) |
| 1999 | 42.4 mm (1.7 in) |
| 2000 | 49.3 mm (1.9 in) |
| 2001 | 21.1 mm (0.8 in) |
| 2002 | 31.0 mm (1.2 in) |
| 2003 | 25.4 mm (1.0 in) |
| 2004 | 29.0 mm (1.1 in) |
| 2005 | 35.1 mm (1.4 in) |
| 2006 | 38.9 mm (1.5 in) |
| 2007 | 21.6 mm (0.9 in) |
| 2008 | 27.9 mm (1.1 in) |
| 2009 | 23.4 mm (0.9 in) |
| 2010 | 63.5 mm (2.5 in) |
| 2011 | 23.9 mm (0.9 in) |
| 2012 | 31.7 mm (1.2 in) |
| 2013 | 21.1 mm (0.8 in) |
| 2014 | 26.2 mm (1.0 in) |
| 2015 | 29.7 mm (1.2 in) |
| 2016 | 53.3 mm (2.1 in) |
| 2017 | 39.9 mm (1.6 in) |
| 2018 | 38.1 mm (1.5 in) |
| 2019 | 38.6 mm (1.5 in) |
| 2020 | 27.9 mm (1.1 in) |
| 2021 | 23.6 mm (0.9 in) |
| 2022 | 43.2 mm (1.7 in) |
| 2023 | 22.9 mm (0.9 in) |
| 2024 | 35.6 mm (1.4 in) |
| 2025 | 35.8 mm (1.4 in) |
| 2026 | 47.0 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1966 | 32.6 mm (1.3 in) |
| 1967 | 46.2 mm (1.8 in) |
| 1968 | 80.8 mm (3.2 in) |
| 1969 | 41.0 mm (1.6 in) |
| 1970 | 56.0 mm (2.2 in) |
| 1971 | 29.0 mm (1.1 in) |
| 1972 | 56.5 mm (2.2 in) |
| 1973 | 57.3 mm (2.3 in) |
| 1974 | 43.2 mm (1.7 in) |
| 1975 | 70.1 mm (2.8 in) |
| 1976 | 63.6 mm (2.5 in) |
| 1977 | 69.7 mm (2.7 in) |
| 1978 | 55.9 mm (2.2 in) |
| 1979 | 86.6 mm (3.4 in) |
| 1980 | 49.8 mm (2.0 in) |
| 1981 | 50.0 mm (2.0 in) |
| 1982 | 46.0 mm (1.8 in) |
| 1983 | 53.2 mm (2.1 in) |
| 1984 | 38.3 mm (1.5 in) |
| 1985 | 67.0 mm (2.6 in) |
| 1986 | 53.8 mm (2.1 in) |
| 1987 | 37.9 mm (1.5 in) |
| 1988 | 35.6 mm (1.4 in) |
| 1989 | 49.2 mm (1.9 in) |
| 1990 | 62.2 mm (2.4 in) |
| 1991 | 61.4 mm (2.4 in) |
| 1992 | 47.0 mm (1.9 in) |
| 1993 | 51.3 mm (2.0 in) |
| 1994 | 63.8 mm (2.5 in) |
| 1995 | 70.0 mm (2.8 in) |
| 1996 | 77.7 mm (3.1 in) |
| 1997 | 49.1 mm (1.9 in) |
| 1998 | 65.5 mm (2.6 in) |
| 1999 | 78.4 mm (3.1 in) |
| 2000 | 60.3 mm (2.4 in) |
| 2001 | 44.0 mm (1.7 in) |
| 2002 | 34.5 mm (1.4 in) |
| 2003 | 75.9 mm (3.0 in) |
| 2004 | 54.1 mm (2.1 in) |
| 2005 | 52.6 mm (2.1 in) |
| 2006 | 84.6 mm (3.3 in) |
| 2007 | 38.3 mm (1.5 in) |
| 2008 | 38.4 mm (1.5 in) |
| 2009 | 48.3 mm (1.9 in) |
| 2010 | 112.7 mm (4.4 in) |
| 2011 | 53.6 mm (2.1 in) |
| 2012 | 60.3 mm (2.4 in) |
| 2013 | 38.2 mm (1.5 in) |
| 2014 | 56.7 mm (2.2 in) |
| 2015 | 55.5 mm (2.2 in) |
| 2016 | 78.0 mm (3.1 in) |
| 2017 | 102.3 mm (4.0 in) |
| 2018 | 83.1 mm (3.3 in) |
| 2019 | 78.2 mm (3.1 in) |
| 2020 | 87.6 mm (3.4 in) |
| 2021 | 43.6 mm (1.7 in) |
| 2022 | 69.0 mm (2.7 in) |
| 2023 | 41.1 mm (1.6 in) |
| 2024 | 61.4 mm (2.4 in) |
| 2025 | 46.7 mm (1.8 in) |
| 2026 | 91.9 mm (3.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1966 | 6 days |
| 1967 | 80 days |
| 1968 | 24 days |
| 1969 | 77 days |
| 1970 | 33 days |
| 1971 | 42 days |
| 1972 | 19 days |
| 1973 | 33 days |
| 1974 | 37 days |
| 1975 | 16 days |
| 1976 | 21 days |
| 1977 | 30 days |
| 1978 | 39 days |
| 1979 | 35 days |
| 1980 | 33 days |
| 1981 | 19 days |
| 1982 | 17 days |
| 1983 | 22 days |
| 1984 | 44 days |
| 1985 | 31 days |
| 1986 | 25 days |
| 1987 | 78 days |
| 1988 | 35 days |
| 1989 | 24 days |
| 1990 | 37 days |
| 1991 | 43 days |
| 1992 | 18 days |
| 1993 | 24 days |
| 1994 | 58 days |
| 1995 | 19 days |
| 1996 | 25 days |
| 1997 | 21 days |
| 1998 | 26 days |
| 1999 | 37 days |
| 2000 | 64 days |
| 2001 | 51 days |
| 2002 | 26 days |
| 2003 | 25 days |
| 2004 | 19 days |
| 2005 | 38 days |
| 2006 | 54 days |
| 2007 | 50 days |
| 2008 | 30 days |
| 2009 | 32 days |
| 2010 | 34 days |
| 2011 | 53 days |
| 2012 | 83 days |
| 2013 | 35 days |
| 2014 | 30 days |
| 2015 | 29 days |
| 2016 | 43 days |
| 2017 | 79 days |
| 2018 | 66 days |
| 2019 | 26 days |
| 2020 | 34 days |
| 2021 | 21 days |
| 2022 | 37 days |
| 2023 | 51 days |
| 2024 | 24 days |
| 2025 | 24 days |
| 2026 | 23 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
49 years with a frostAcross 49 years with a frost, the median last spring frost at Dworshak Fish Hatchery falls on 20 April and the median first autumn frost on 15 October, which leaves a median of 180 days between them.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1987 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 April | n/a | 20 April | n/a | +0.1 days per decade |
| First autumn frost | 15 October | n/a | 21 October | n/a | +2.2 days per decade |
| Growing days | 180 days | n/a | 189 days | n/a | +2.1 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
53 years, 1967 to 2024A day with at least 31.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 68.8 mm (2.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 31.4 mm (1.2 in) | |
| 5 years | 41.0 mm (1.6 in) | |
| 10 years | 47.5 mm (1.9 in) | |
| 25 years | 55.9 mm (2.2 in) | |
| 50 years | 62.3 mm (2.5 in) | |
| 100 years | 68.8 mm (2.7 in) | Longer than the 53 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, 53 years of values from 1967 to 2024.
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: 63.5 mm (2.5 in) in 2010; 56.1 mm (2.2 in) in 1977; 53.3 mm (2.1 in) in 2016.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Dworshak Fish Hatchery, at 1973. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1973 ran 0.4 C (0.7 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1973 | -0.4 | -0.7 | possible | 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
2002 to 2024 against 1961 to 1990Over 2002 to 2024, Dworshak Fish Hatchery had a mean temperature of 10.9 C (51.7 F) and 623.2 mm (24.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Yreka (United States, 734 km away), Dayton 1 WSW (United States, 131 km away) and New Harmony (United States, 1,036 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Yreka | United States | 734 km (456 mi) | 10.9 C (51.7 F) | 499.9 mm (19.7 in) | 0.88 |
| Dayton 1 WSW | United States | 131 km (81 mi) | 10.6 C (51.0 F) | 471.5 mm (18.6 in) | 0.95 |
| New Harmony | United States | 1,036 km (644 mi) | 11.1 C (51.9 F) | 469.0 mm (18.5 in) | 0.97 |
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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).