Swan Valley Weather Records (USC00108937)
Record envelope, standing records and threshold days for Swan Valley (USC00108937), Idaho, United States, with 67 years of record.
Key Facts for Swan Valley
- Swan Valley (USC00108937) is a weather station in Idaho, United States at 43.44 latitude and -111.28 longitude, 1,645 m (5,397 ft) above sea level.
- The station reports from 1960 to 2026, 67 years of record.
- 1,464 records set at Swan Valley still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Swan Valley set a daily record high minimum temperature of 10.6 C (51.1 F) on 11 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, 43.44 latitude, -111.28 longitude.
- Elevation: 1,645 m (5,397 ft).
- Period of record: 1960 to 2026, 67 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
39 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 12.8 C (55.0 F) | -41.7 C (-43.1 F) | 8.3 C (46.9 F) | -17.2 C (1.0 F) |
| Feb | 15.6 C (60.1 F) | -37.8 C (-36.0 F) | 15.0 C (59.0 F) | -17.2 C (1.0 F) |
| Mar | 27.2 C (81.0 F) | -31.7 C (-25.1 F) | 27.2 C (81.0 F) | -8.9 C (16.0 F) |
| Apr | 28.3 C (82.9 F) | -19.4 C (-2.9 F) | 26.7 C (80.1 F) | -8.3 C (17.1 F) |
| May | 32.8 C (91.0 F) | -11.1 C (12.0 F) | 30.6 C (87.1 F) | -5.0 C (23.0 F) |
| Jun | 38.3 C (100.9 F) | -6.7 C (19.9 F) | 32.2 C (90.0 F) | -0.6 C (30.9 F) |
| Jul | 40.0 C (104.0 F) | -3.3 C (26.1 F) | 40.0 C (104.0 F) | 5.0 C (41.0 F) |
| Aug | 38.9 C (102.0 F) | -5.0 C (23.0 F) | 38.9 C (102.0 F) | 2.2 C (36.0 F) |
| Sep | 39.4 C (102.9 F) | -13.3 C (8.1 F) | 30.6 C (87.1 F) | -0.6 C (30.9 F) |
| Oct | 31.7 C (89.1 F) | -20.6 C (-5.1 F) | 30.6 C (87.1 F) | 2.2 C (36.0 F) |
| Nov | 22.2 C (72.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Dec | 14.4 C (57.9 F) | -41.7 C (-43.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1960 | 6 |
| 1961 | 7 |
| 1962 | 33 |
| 1963 | 24 |
| 1964 | 20 |
| 1965 | 12 |
| 1966 | 31 |
| 1967 | 17 |
| 1968 | 14 |
| 1969 | 23 |
| 1970 | 22 |
| 1971 | 33 |
| 1972 | 21 |
| 1973 | 22 |
| 1974 | 34 |
| 1975 | 38 |
| 1976 | 24 |
| 1977 | 12 |
| 1978 | 28 |
| 1979 | 24 |
| 1980 | 30 |
| 1981 | 26 |
| 1982 | 26 |
| 1983 | 30 |
| 1984 | 24 |
| 1985 | 26 |
| 1986 | 24 |
| 1987 | 22 |
| 1988 | 21 |
| 1989 | 25 |
| 1990 | 41 |
| 1991 | 14 |
| 1992 | 41 |
| 1993 | 23 |
| 1994 | 12 |
| 1995 | 23 |
| 1996 | 22 |
| 1997 | 9 |
| 1998 | 8 |
| 1999 | 9 |
| 2000 | 16 |
| 2001 | 19 |
| 2002 | 16 |
| 2003 | 35 |
| 2004 | 21 |
| 2005 | 11 |
| 2006 | 15 |
| 2007 | 30 |
| 2008 | 15 |
| 2009 | 16 |
| 2010 | 19 |
| 2011 | 17 |
| 2012 | 29 |
| 2013 | 13 |
| 2014 | 22 |
| 2015 | 19 |
| 2016 | 14 |
| 2017 | 23 |
| 2018 | 8 |
| 2019 | 17 |
| 2020 | 20 |
| 2021 | 10 |
| 2022 | 33 |
| 2023 | 24 |
| 2024 | 27 |
| 2025 | 36 |
| 2026 | 38 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 2004-06-10 | Record daily precipitation | Record daily precipitation 58.4 mm (2.3 in) |
| 2020-02-17 | Record snow depth | Record snow depth 96.5 cm (38.0 in) |
| 2022-09-04 | Record high maximum temperature | Record high maximum temperature 39.4 C (102.9 F) |
| 2024-03-02 | Record daily snowfall | Record daily snowfall 68.6 cm (27.0 in) |
| 2026-07-13 | Record high maximum temperature | Record high maximum temperature 40.0 C (104.0 F) |
Wettest Day of Each Month
Jun: 58.4 mm (2.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 35.6 mm (1.4 in) | 23 January 1982 |
| Feb | 21.6 mm (0.9 in) | 20 February 1968 |
| Mar | 47.2 mm (1.9 in) | 2 March 2024 |
| Apr | 22.9 mm (0.9 in) | 27 April 2014 |
| May | 46.2 mm (1.8 in) | 7 May 1988 |
| Jun | 58.4 mm (2.3 in) | 10 June 2004 |
| Jul | 46.5 mm (1.8 in) | 23 July 1985 |
| Aug | 34.0 mm (1.3 in) | 16 August 1980 |
| Sep | 47.5 mm (1.9 in) | 22 September 2006 |
| Oct | 42.2 mm (1.7 in) | 16 October 2012 |
| Nov | 38.1 mm (1.5 in) | 27 November 2012 |
| Dec | 30.5 mm (1.2 in) | 23 December 1964 |
Period of Record Coverage
1960 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1960 | 175 | 48% | No |
| 1961 | 361 | 99% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 238 | 65% | No |
| 1965 | 262 | 72% | No |
| 1966 | 286 | 78% | No |
| 1967 | 363 | 99% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 363 | 99% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 361 | 99% | Yes |
| 1983 | 360 | 99% | Yes |
| 1984 | 363 | 99% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 363 | 99% | Yes |
| 1991 | 362 | 99% | Yes |
| 1992 | 355 | 97% | Yes |
| 1993 | 352 | 96% | Yes |
| 1994 | 337 | 92% | Yes |
| 1995 | 343 | 94% | Yes |
| 1996 | 354 | 97% | Yes |
| 1997 | 330 | 90% | Yes |
| 1998 | 336 | 92% | Yes |
| 1999 | 342 | 94% | Yes |
| 2000 | 334 | 91% | Yes |
| 2001 | 325 | 89% | No |
| 2002 | 313 | 86% | No |
| 2003 | 323 | 88% | No |
| 2004 | 343 | 94% | Yes |
| 2005 | 320 | 88% | No |
| 2006 | 348 | 95% | Yes |
| 2007 | 346 | 95% | Yes |
| 2008 | 335 | 92% | Yes |
| 2009 | 323 | 88% | No |
| 2010 | 363 | 99% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 356 | 97% | Yes |
| 2013 | 293 | 80% | No |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 361 | 99% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 283 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | Swan Valley, US | daily high min (Provisional) | 10.6 C (51.1 F) | 1.2 C (2.2 F) | 36 years | 19 of 100 (Routine) |
| 9 October 2026 | Swan Valley, US | daily high max (Tie, Provisional) | 28.3 C (82.9 F) | tie | 1 year | 1 of 100 (Routine) |
| 8 October 2026 | Swan Valley, US | daily high max (Provisional) | 28.9 C (84.0 F) | 1.7 C (3.1 F) | 5 years | 9 of 100 (Routine) |
| 6 October 2026 | Swan Valley, US | daily high max (Provisional) | 30.6 C (87.1 F) | 3.9 C (7.0 F) | 4 years | 13 of 100 (Routine) |
| 4 October 2026 | Swan Valley, US | daily high max (Provisional) | 28.3 C (82.9 F) | 1.1 C (2.0 F) | 16 years | 11 of 100 (Routine) |
| 2 September 2026 | Swan Valley, US | daily high min (Provisional) | 14.4 C (57.9 F) | 1.6 C (2.9 F) | 43 years | 21 of 100 (Routine) |
| 29 August 2026 | Swan Valley, US | daily high min (Provisional) | 14.4 C (57.9 F) | 0.5 C (0.9 F) | 55 years | 23 of 100 (Routine) |
| 22 August 2026 | Swan Valley, US | daily high max (Provisional) | 37.2 C (99.0 F) | 2.2 C (4.0 F) | 56 years | 28 of 100 (Routine) |
| 21 August 2026 | Swan Valley, US | daily high max (Provisional) | 36.1 C (97.0 F) | 1.1 C (2.0 F) | 7 years | 10 of 100 (Routine) |
| 11 August 2026 | Swan Valley, US | daily high max (Tie) | 35.0 C (95.0 F) | tie | 8 years | 2 of 100 (Routine) |
| 10 August 2026 | Swan Valley, US | daily high max (Tie) | 36.1 C (97.0 F) | tie | 36 years | 4 of 100 (Routine) |
| 2 August 2026 | Swan Valley, US | monthly high max (Tie) | 38.9 C (102.0 F) | tie | 0 years | 4 of 100 (Routine) |
| 1 August 2026 | Swan Valley, US | daily high max | 36.1 C (97.0 F) | 1.7 C (3.1 F) | 25 years | 17 of 100 (Routine) |
| 26 July 2026 | Swan Valley, US | daily high min | 16.7 C (62.1 F) | 0.6 C (1.1 F) | 15 years | 11 of 100 (Routine) |
| 25 July 2026 | Swan Valley, US | daily high min (Tie) | 16.1 C (61.0 F) | tie | 19 years | 2 of 100 (Routine) |
| 22 July 2026 | Swan Valley, US | daily high max | 37.8 C (100.0 F) | 1.1 C (2.0 F) | 19 years | 13 of 100 (Routine) |
| 22 July 2026 | Swan Valley, US | all-time high min (Tie) | 18.9 C (66.0 F) | tie | 43 years | 9 of 100 (Routine) |
| 15 July 2026 | Swan Valley, US | daily high min (Tie) | 14.4 C (57.9 F) | tie | 19 years | 2 of 100 (Routine) |
| 13 July 2026 | Swan Valley, US | all-time high max | 40.0 C (104.0 F) | 0.6 C (1.1 F) | 3 years | 28 of 100 (Routine) |
| 30 June 2026 | Swan Valley, US | daily low max | 12.8 C (55.0 F) | 1.6 C (2.9 F) | 5 years | 10 of 100 (Routine) |
Climate Trend
56 complete years, 1961 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1961 | 5.1 C | -0.82 C |
| 1962 | 5.4 C | -0.53 C |
| 1963 | 5.7 C | -0.22 C |
| 1967 | 6.3 C | +0.39 C |
| 1968 | 5.6 C | -0.37 C |
| 1969 | 6.2 C | +0.31 C |
| 1970 | 5.1 C | -0.83 C |
| 1971 | 5.0 C | -0.88 C |
| 1972 | 5.4 C | -0.49 C |
| 1973 | 5.1 C | -0.87 C |
| 1974 | 5.2 C | -0.70 C |
| 1975 | 4.2 C | -1.70 C |
| 1976 | 4.9 C | -1.00 C |
| 1977 | 5.0 C | -0.96 C |
| 1978 | 5.0 C | -0.97 C |
| 1979 | 4.6 C | -1.28 C |
| 1980 | 6.3 C | +0.38 C |
| 1981 | 6.8 C | +0.85 C |
| 1982 | 4.9 C | -1.01 C |
| 1983 | 6.0 C | +0.10 C |
| 1984 | 4.9 C | -0.98 C |
| 1985 | 3.9 C | -2.07 C |
| 1986 | 6.2 C | +0.27 C |
| 1987 | 6.2 C | +0.28 C |
| 1988 | 6.3 C | +0.37 C |
| 1989 | 6.0 C | +0.10 C |
| 1990 | 6.3 C | +0.38 C |
| 1991 | 5.5 C | -0.40 C |
| 1992 | 6.7 C | +0.77 C |
| 1993 | 4.0 C | -1.97 C |
| 1994 | 6.3 C | +0.39 C |
| 1995 | 6.3 C | +0.35 C |
| 1996 | 6.1 C | +0.17 C |
| 1999 | 6.2 C | +0.25 C |
| 2000 | 6.5 C | +0.58 C |
| 2001 | 6.7 C | +0.78 C |
| 2004 | 6.5 C | +0.62 C |
| 2005 | 6.6 C | +0.69 C |
| 2006 | 6.5 C | +0.57 C |
| 2007 | 7.2 C | +1.26 C |
| 2008 | 5.4 C | -0.53 C |
| 2010 | 6.3 C | +0.41 C |
| 2011 | 5.8 C | -0.16 C |
| 2012 | 7.6 C | +1.64 C |
| 2014 | 6.0 C | +0.11 C |
| 2015 | 6.6 C | +0.65 C |
| 2016 | 6.1 C | +0.22 C |
| 2017 | 6.9 C | +0.93 C |
| 2018 | 6.1 C | +0.17 C |
| 2019 | 5.5 C | -0.39 C |
| 2020 | 5.9 C | +0.02 C |
| 2021 | 6.2 C | +0.28 C |
| 2022 | 5.4 C | -0.55 C |
| 2023 | 7.0 C | +1.11 C |
| 2024 | 8.1 C | +2.17 C |
| 2025 | 8.2 C | +2.28 C |
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1961 to 2025. In Fahrenheit: 0.5 F (0.3 to 0.7) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.2 to 0.4) per decade | 0.5 F (0.3 to 0.7) per decade | 1961 to 2025 | 56 | Rise |
| Mean daily maximum | 0.11 C (-0.04 to 0.26) per decade | 0.2 F (-0.1 to 0.5) per decade | 1961 to 2025 | 56 | Not clearly different from zero |
| Mean daily minimum | 0.4 C (0.3 to 0.6) per decade | 0.7 F (0.5 to 1.0) per decade | 1961 to 2025 | 56 | 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
1960 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.0 C (104.0 F) | 2026 | 35.0 C (95.0 F) | 67 |
| Coldest night (TNn) | -41.7 C (-43.1 F) | 1963 | -28.9 C (-20.0 F) | 67 |
| Wettest day (Rx1day) | 58.4 mm (2.3 in) | 2004 | 24.6 mm (1.0 in) | 67 |
| Wettest five days (Rx5day) | 84.6 mm (3.3 in) | 1973 | 47.2 mm (1.9 in) | 67 |
| Longest dry spell (CDD) | 59 days | 1987 | 28 days | 67 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1960 | 35.0 C (95.0 F) |
| 1961 | 36.7 C (98.1 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 33.3 C (91.9 F) |
| 1964 | 33.3 C (91.9 F) |
| 1965 | 32.8 C (91.0 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 34.4 C (93.9 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 35.6 C (96.1 F) |
| 1970 | 33.9 C (93.0 F) |
| 1971 | 34.4 C (93.9 F) |
| 1972 | 34.4 C (93.9 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 36.1 C (97.0 F) |
| 1975 | 37.2 C (99.0 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 32.8 C (91.0 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 33.9 C (93.0 F) |
| 1980 | 32.8 C (91.0 F) |
| 1981 | 32.8 C (91.0 F) |
| 1982 | 33.3 C (91.9 F) |
| 1983 | 35.0 C (95.0 F) |
| 1984 | 33.9 C (93.0 F) |
| 1985 | 35.6 C (96.1 F) |
| 1986 | 34.4 C (93.9 F) |
| 1987 | 33.3 C (91.9 F) |
| 1988 | 38.3 C (100.9 F) |
| 1989 | 38.3 C (100.9 F) |
| 1990 | 38.3 C (100.9 F) |
| 1991 | 36.7 C (98.1 F) |
| 1992 | 34.4 C (93.9 F) |
| 1993 | 28.9 C (84.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 33.9 C (93.0 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 32.2 C (90.0 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 35.0 C (95.0 F) |
| 2000 | 38.3 C (100.9 F) |
| 2001 | 37.2 C (99.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 38.3 C (100.9 F) |
| 2004 | 33.3 C (91.9 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 36.1 C (97.0 F) |
| 2007 | 37.8 C (100.0 F) |
| 2008 | 35.0 C (95.0 F) |
| 2009 | 33.3 C (91.9 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 33.9 C (93.0 F) |
| 2012 | 36.7 C (98.1 F) |
| 2013 | 33.9 C (93.0 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 34.4 C (93.9 F) |
| 2016 | 33.3 C (91.9 F) |
| 2017 | 34.4 C (93.9 F) |
| 2018 | 36.1 C (97.0 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 36.7 C (98.1 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 39.4 C (102.9 F) |
| 2023 | 37.8 C (100.0 F) |
| 2024 | 38.3 C (100.9 F) |
| 2025 | 38.9 C (102.0 F) |
| 2026 | 40.0 C (104.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1960 | -27.8 C (-18.0 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -35.6 C (-32.1 F) |
| 1963 | -41.7 C (-43.1 F) |
| 1964 | -33.9 C (-29.0 F) |
| 1965 | -25.6 C (-14.1 F) |
| 1966 | -31.1 C (-24.0 F) |
| 1967 | -31.7 C (-25.1 F) |
| 1968 | -28.9 C (-20.0 F) |
| 1969 | -27.8 C (-18.0 F) |
| 1970 | -35.0 C (-31.0 F) |
| 1971 | -33.3 C (-27.9 F) |
| 1972 | -38.9 C (-38.0 F) |
| 1973 | -33.3 C (-27.9 F) |
| 1974 | -36.7 C (-34.1 F) |
| 1975 | -31.1 C (-24.0 F) |
| 1976 | -27.2 C (-17.0 F) |
| 1977 | -33.3 C (-27.9 F) |
| 1978 | -33.9 C (-29.0 F) |
| 1979 | -40.0 C (-40.0 F) |
| 1980 | -30.6 C (-23.1 F) |
| 1981 | -28.9 C (-20.0 F) |
| 1982 | -37.8 C (-36.0 F) |
| 1983 | -32.2 C (-26.0 F) |
| 1984 | -34.4 C (-29.9 F) |
| 1985 | -37.2 C (-35.0 F) |
| 1986 | -23.3 C (-9.9 F) |
| 1987 | -31.7 C (-25.1 F) |
| 1988 | -33.9 C (-29.0 F) |
| 1989 | -34.4 C (-29.9 F) |
| 1990 | -41.7 C (-43.1 F) |
| 1991 | -33.3 C (-27.9 F) |
| 1992 | -29.4 C (-20.9 F) |
| 1993 | -28.9 C (-20.0 F) |
| 1994 | -24.4 C (-11.9 F) |
| 1995 | -24.4 C (-11.9 F) |
| 1996 | -31.1 C (-24.0 F) |
| 1997 | -23.9 C (-11.0 F) |
| 1998 | -25.0 C (-13.0 F) |
| 1999 | -22.2 C (-8.0 F) |
| 2000 | -21.1 C (-6.0 F) |
| 2001 | -28.9 C (-20.0 F) |
| 2002 | -30.0 C (-22.0 F) |
| 2003 | -22.2 C (-8.0 F) |
| 2004 | -26.7 C (-16.1 F) |
| 2005 | -20.6 C (-5.1 F) |
| 2006 | -27.2 C (-17.0 F) |
| 2007 | -28.9 C (-20.0 F) |
| 2008 | -31.1 C (-24.0 F) |
| 2009 | -28.9 C (-20.0 F) |
| 2010 | -28.3 C (-18.9 F) |
| 2011 | -29.4 C (-20.9 F) |
| 2012 | -22.8 C (-9.0 F) |
| 2013 | -26.7 C (-16.1 F) |
| 2014 | -26.1 C (-15.0 F) |
| 2015 | -27.2 C (-17.0 F) |
| 2016 | -27.8 C (-18.0 F) |
| 2017 | -28.9 C (-20.0 F) |
| 2018 | -22.8 C (-9.0 F) |
| 2019 | -28.9 C (-20.0 F) |
| 2020 | -26.7 C (-16.1 F) |
| 2021 | -22.8 C (-9.0 F) |
| 2022 | -30.0 C (-22.0 F) |
| 2023 | -33.9 C (-29.0 F) |
| 2024 | -26.7 C (-16.1 F) |
| 2025 | -30.6 C (-23.1 F) |
| 2026 | -17.2 C (1.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1960 | 17.0 mm (0.7 in) |
| 1961 | 33.0 mm (1.3 in) |
| 1962 | 23.4 mm (0.9 in) |
| 1963 | 27.9 mm (1.1 in) |
| 1964 | 30.5 mm (1.2 in) |
| 1965 | 16.5 mm (0.6 in) |
| 1966 | 24.1 mm (0.9 in) |
| 1967 | 21.6 mm (0.9 in) |
| 1968 | 21.6 mm (0.9 in) |
| 1969 | 42.7 mm (1.7 in) |
| 1970 | 32.0 mm (1.3 in) |
| 1971 | 26.2 mm (1.0 in) |
| 1972 | 30.0 mm (1.2 in) |
| 1973 | 33.5 mm (1.3 in) |
| 1974 | 16.3 mm (0.6 in) |
| 1975 | 32.0 mm (1.3 in) |
| 1976 | 20.6 mm (0.8 in) |
| 1977 | 16.8 mm (0.7 in) |
| 1978 | 24.6 mm (1.0 in) |
| 1979 | 29.7 mm (1.2 in) |
| 1980 | 34.0 mm (1.3 in) |
| 1981 | 39.1 mm (1.5 in) |
| 1982 | 35.6 mm (1.4 in) |
| 1983 | 23.4 mm (0.9 in) |
| 1984 | 31.5 mm (1.2 in) |
| 1985 | 46.5 mm (1.8 in) |
| 1986 | 19.8 mm (0.8 in) |
| 1987 | 24.4 mm (1.0 in) |
| 1988 | 46.2 mm (1.8 in) |
| 1989 | 15.5 mm (0.6 in) |
| 1990 | 17.3 mm (0.7 in) |
| 1991 | 26.7 mm (1.1 in) |
| 1992 | 21.6 mm (0.9 in) |
| 1993 | 33.3 mm (1.3 in) |
| 1994 | 25.4 mm (1.0 in) |
| 1995 | 30.5 mm (1.2 in) |
| 1996 | 20.3 mm (0.8 in) |
| 1997 | 21.1 mm (0.8 in) |
| 1998 | 21.6 mm (0.9 in) |
| 1999 | 22.1 mm (0.9 in) |
| 2000 | 22.1 mm (0.9 in) |
| 2001 | 18.5 mm (0.7 in) |
| 2002 | 34.3 mm (1.4 in) |
| 2003 | 23.1 mm (0.9 in) |
| 2004 | 58.4 mm (2.3 in) |
| 2005 | 23.4 mm (0.9 in) |
| 2006 | 47.5 mm (1.9 in) |
| 2007 | 29.2 mm (1.1 in) |
| 2008 | 15.2 mm (0.6 in) |
| 2009 | 26.7 mm (1.1 in) |
| 2010 | 22.9 mm (0.9 in) |
| 2011 | 37.6 mm (1.5 in) |
| 2012 | 42.2 mm (1.7 in) |
| 2013 | 17.8 mm (0.7 in) |
| 2014 | 22.9 mm (0.9 in) |
| 2015 | 23.1 mm (0.9 in) |
| 2016 | 21.8 mm (0.9 in) |
| 2017 | 22.1 mm (0.9 in) |
| 2018 | 22.6 mm (0.9 in) |
| 2019 | 24.1 mm (0.9 in) |
| 2020 | 37.8 mm (1.5 in) |
| 2021 | 22.4 mm (0.9 in) |
| 2022 | 34.0 mm (1.3 in) |
| 2023 | 26.2 mm (1.0 in) |
| 2024 | 47.2 mm (1.9 in) |
| 2025 | 24.9 mm (1.0 in) |
| 2026 | 28.4 mm (1.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1960 | 31.5 mm (1.2 in) |
| 1961 | 70.1 mm (2.8 in) |
| 1962 | 32.3 mm (1.3 in) |
| 1963 | 57.1 mm (2.2 in) |
| 1964 | 47.6 mm (1.9 in) |
| 1965 | 40.7 mm (1.6 in) |
| 1966 | 36.8 mm (1.4 in) |
| 1967 | 46.9 mm (1.8 in) |
| 1968 | 61.0 mm (2.4 in) |
| 1969 | 46.8 mm (1.8 in) |
| 1970 | 47.6 mm (1.9 in) |
| 1971 | 37.3 mm (1.5 in) |
| 1972 | 34.3 mm (1.4 in) |
| 1973 | 84.6 mm (3.3 in) |
| 1974 | 42.4 mm (1.7 in) |
| 1975 | 53.8 mm (2.1 in) |
| 1976 | 35.2 mm (1.4 in) |
| 1977 | 43.7 mm (1.7 in) |
| 1978 | 37.4 mm (1.5 in) |
| 1979 | 38.8 mm (1.5 in) |
| 1980 | 48.0 mm (1.9 in) |
| 1981 | 56.2 mm (2.2 in) |
| 1982 | 44.3 mm (1.7 in) |
| 1983 | 43.5 mm (1.7 in) |
| 1984 | 41.4 mm (1.6 in) |
| 1985 | 51.3 mm (2.0 in) |
| 1986 | 48.6 mm (1.9 in) |
| 1987 | 68.2 mm (2.7 in) |
| 1988 | 48.2 mm (1.9 in) |
| 1989 | 28.2 mm (1.1 in) |
| 1990 | 39.9 mm (1.6 in) |
| 1991 | 46.9 mm (1.8 in) |
| 1992 | 31.8 mm (1.3 in) |
| 1993 | 73.6 mm (2.9 in) |
| 1994 | 51.5 mm (2.0 in) |
| 1995 | 49.8 mm (2.0 in) |
| 1996 | 43.5 mm (1.7 in) |
| 1997 | 47.2 mm (1.9 in) |
| 1998 | 45.7 mm (1.8 in) |
| 1999 | 52.6 mm (2.1 in) |
| 2000 | 37.1 mm (1.5 in) |
| 2001 | 27.4 mm (1.1 in) |
| 2002 | 67.3 mm (2.6 in) |
| 2003 | 27.9 mm (1.1 in) |
| 2004 | 70.6 mm (2.8 in) |
| 2005 | 52.1 mm (2.1 in) |
| 2006 | 63.5 mm (2.5 in) |
| 2007 | 36.8 mm (1.4 in) |
| 2008 | 38.3 mm (1.5 in) |
| 2009 | 78.0 mm (3.1 in) |
| 2010 | 35.0 mm (1.4 in) |
| 2011 | 40.6 mm (1.6 in) |
| 2012 | 50.8 mm (2.0 in) |
| 2013 | 38.8 mm (1.5 in) |
| 2014 | 60.7 mm (2.4 in) |
| 2015 | 45.4 mm (1.8 in) |
| 2016 | 61.2 mm (2.4 in) |
| 2017 | 49.0 mm (1.9 in) |
| 2018 | 39.4 mm (1.6 in) |
| 2019 | 41.9 mm (1.6 in) |
| 2020 | 52.5 mm (2.1 in) |
| 2021 | 56.6 mm (2.2 in) |
| 2022 | 68.0 mm (2.7 in) |
| 2023 | 50.8 mm (2.0 in) |
| 2024 | 64.0 mm (2.5 in) |
| 2025 | 60.6 mm (2.4 in) |
| 2026 | 47.7 mm (1.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1960 | 19 days |
| 1961 | 35 days |
| 1962 | 29 days |
| 1963 | 29 days |
| 1964 | 47 days |
| 1965 | 28 days |
| 1966 | 39 days |
| 1967 | 23 days |
| 1968 | 27 days |
| 1969 | 52 days |
| 1970 | 21 days |
| 1971 | 22 days |
| 1972 | 23 days |
| 1973 | 25 days |
| 1974 | 38 days |
| 1975 | 43 days |
| 1976 | 40 days |
| 1977 | 37 days |
| 1978 | 53 days |
| 1979 | 30 days |
| 1980 | 30 days |
| 1981 | 34 days |
| 1982 | 16 days |
| 1983 | 18 days |
| 1984 | 17 days |
| 1985 | 30 days |
| 1986 | 27 days |
| 1987 | 59 days |
| 1988 | 44 days |
| 1989 | 26 days |
| 1990 | 24 days |
| 1991 | 24 days |
| 1992 | 39 days |
| 1993 | 37 days |
| 1994 | 28 days |
| 1995 | 13 days |
| 1996 | 28 days |
| 1997 | 14 days |
| 1998 | 30 days |
| 1999 | 38 days |
| 2000 | 18 days |
| 2001 | 26 days |
| 2002 | 22 days |
| 2003 | 28 days |
| 2004 | 21 days |
| 2005 | 27 days |
| 2006 | 13 days |
| 2007 | 30 days |
| 2008 | 21 days |
| 2009 | 23 days |
| 2010 | 26 days |
| 2011 | 19 days |
| 2012 | 40 days |
| 2013 | 14 days |
| 2014 | 20 days |
| 2015 | 29 days |
| 2016 | 25 days |
| 2017 | 20 days |
| 2018 | 35 days |
| 2019 | 28 days |
| 2020 | 27 days |
| 2021 | 28 days |
| 2022 | 41 days |
| 2023 | 20 days |
| 2024 | 34 days |
| 2025 | 29 days |
| 2026 | 25 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
56 years with a frostAcross 56 years with a frost, the median last spring frost at Swan Valley falls on 19 June and the median first autumn frost on 26 August, which leaves a median of 69 days between them.
Fitted over all years, the growing season changes by +12.4 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1990 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 19 June | n/a | 16 June | n/a | -2.5 days per decade |
| First autumn frost | 26 August | n/a | 8 September | n/a | +9.9 days per decade |
| Growing days | 69 days | n/a | 83 days | n/a | +12.4 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
63 years, 1961 to 2025A day with at least 25.8 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 61.6 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 | 25.8 mm (1.0 in) | |
| 5 years | 33.8 mm (1.3 in) | |
| 10 years | 39.7 mm (1.6 in) | |
| 25 years | 47.9 mm (1.9 in) | |
| 50 years | 54.5 mm (2.1 in) | |
| 100 years | 61.6 mm (2.4 in) | Longer than the 63 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, 63 years of values from 1961 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: 58.4 mm (2.3 in) in 2004; 47.5 mm (1.9 in) in 2006; 47.2 mm (1.9 in) in 2024.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2010 to 2025 against 1961 to 1990Over 2010 to 2025, Swan Valley had a mean temperature of 6.5 C (43.7 F) and 531.8 mm (20.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Deer Creek Dam (United States, 338 km away), Snake Creek Powerhouse (United States, 322 km away) and Wanship Dam (United States, 294 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Deer Creek Dam | United States | 338 km (210 mi) | 6.4 C (43.6 F) | 573.3 mm (22.6 in) | 0.61 |
| Snake Creek Powerhouse | United States | 322 km (200 mi) | 6.2 C (43.1 F) | 563.1 mm (22.2 in) | 0.68 |
| Wanship Dam | United States | 294 km (183 mi) | 6.6 C (44.0 F) | 415.6 mm (16.4 in) | 0.76 |
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 (2026-10-13).