Chelan Threshold Days by Year (USC00451350)
16 fixed thresholds counted per year at Chelan (USC00451350): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Chelan Thresholds
- Chelan: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1983 with 18.
- Chelan: days with a maximum temperature at or above 30 C (86 F) in 63 years, most in 2025 with 82.
- Chelan: days with a maximum temperature at or above 90 F (32.2 C) in 63 years, most in 2025 with 53.
- Chelan: days with a maximum temperature at or below 0 C (32 F) in 63 years, most in 2022 with 73.
- 16 fixed thresholds have at least one qualifying day at Chelan.
Days at or above 30 C (86 F)
63 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1959 | 27 | 27 |
| 1960 | 44 | 38.6 |
| 1961 | 60 | 38.6 |
| 1962 | 30 | 38.6 |
| 1963 | 36 | 38.6 |
| 1964 | 20 | 38.6 |
| 1965 | 32 | 38.6 |
| 1966 | 27 | 38.6 |
| 1967 | 60 | 38.6 |
| 1968 | 34 | 38.6 |
| 1969 | 43 | 38.6 |
| 1970 | 46 | 40.2 |
| 1971 | 43 | 40.2 |
| 1972 | 29 | 40.2 |
| 1973 | 48 | 40.2 |
| 1974 | 42 | 40.2 |
| 1975 | 29 | 40.2 |
| 1976 | 24 | 40.2 |
| 1977 | 50 | 40.2 |
| 1978 | 39 | 40.2 |
| 1979 | 52 | 40.2 |
| 1980 | 20 | 39.3 |
| 1981 | 40 | 39.3 |
| 1982 | 40 | 39.3 |
| 1983 | 35 | 39.3 |
| 1984 | 33 | 39.3 |
| 1986 | 54 | 39.3 |
| 1987 | 52 | 39.3 |
| 1988 | 45 | 39.3 |
| 1989 | 35 | 39.3 |
| 1990 | 37 | 32.9 |
| 1991 | 29 | 32.9 |
| 1992 | 38 | 32.9 |
| 1993 | 22 | 32.9 |
| 1994 | 35 | 32.9 |
| 1995 | 25 | 32.9 |
| 1996 | 34 | 32.9 |
| 1997 | 26 | 32.9 |
| 1998 | 57 | 32.9 |
| 1999 | 26 | 32.9 |
| 2000 | 38 | 47.9 |
| 2001 | 47 | 47.9 |
| 2002 | 41 | 47.9 |
| 2003 | 67 | 47.9 |
| 2004 | 49 | 47.9 |
| 2005 | 48 | 47.9 |
| 2006 | 49 | 47.9 |
| 2007 | 44 | 47.9 |
| 2010 | 30 | 48.6 |
| 2011 | 24 | 48.6 |
| 2014 | 45 | 48.6 |
| 2015 | 63 | 48.6 |
| 2016 | 51 | 48.6 |
| 2017 | 74 | 48.6 |
| 2018 | 49 | 48.6 |
| 2019 | 53 | 48.6 |
| 2020 | 53 | 64.6 |
| 2021 | 68 | 64.6 |
| 2022 | 54 | 64.6 |
| 2023 | 73 | 64.6 |
| 2024 | 62 | 64.6 |
| 2025 | 82 | 64.6 |
| 2026 | 60 | 64.6 |
| Year | First date | Last date |
|---|---|---|
| 1959 | 1959-06-02 | 1959-08-10 |
| 1960 | 1960-06-11 | 1960-09-19 |
| 1961 | 1961-05-21 | 1961-09-05 |
| 1962 | 1962-06-16 | 1962-09-22 |
| 1963 | 1963-05-30 | 1963-09-13 |
| 1964 | 1964-07-01 | 1964-08-24 |
| 1965 | 1965-05-29 | 1965-08-20 |
| 1966 | 1966-05-26 | 1966-09-10 |
| 1967 | 1967-05-22 | 1967-09-27 |
| 1968 | 1968-06-19 | 1968-09-07 |
| 1969 | 1969-06-04 | 1969-09-13 |
| 1970 | 1970-05-26 | 1970-08-26 |
| 1971 | 1971-05-24 | 1971-08-31 |
| 1972 | 1972-06-29 | 1972-09-04 |
| 1973 | 1973-05-14 | 1973-09-12 |
| 1974 | 1974-06-11 | 1974-09-19 |
| 1975 | 1975-06-01 | 1975-09-08 |
| 1976 | 1976-06-19 | 1976-09-05 |
| 1977 | 1977-04-25 | 1977-09-14 |
| 1978 | 1978-05-21 | 1978-08-11 |
| 1979 | 1979-05-26 | 1979-09-20 |
| 1980 | 1980-07-03 | 1980-08-14 |
| 1981 | 1981-06-30 | 1981-09-19 |
| 1982 | 1982-06-11 | 1982-09-09 |
| 1983 | 1983-05-23 | 1983-08-21 |
| 1984 | 1984-06-15 | 1984-09-19 |
| 1986 | 1986-05-27 | 1986-09-05 |
| 1987 | 1987-05-08 | 1987-09-23 |
| 1988 | 1988-05-13 | 1988-09-06 |
| 1989 | 1989-06-03 | 1989-09-16 |
| 1990 | 1990-06-24 | 1990-09-12 |
| 1991 | 1991-07-03 | 1991-09-13 |
| 1992 | 1992-05-26 | 1992-08-21 |
| 1993 | 1993-05-12 | 1993-09-12 |
| 1994 | 1994-05-08 | 1994-09-08 |
| 1995 | 1995-05-30 | 1995-09-15 |
| 1996 | 1996-06-08 | 1996-09-13 |
| 1997 | 1997-05-12 | 1997-09-03 |
| 1998 | 1998-05-05 | 1998-09-18 |
| 1999 | 1999-07-12 | 1999-09-19 |
| 2000 | 2000-06-26 | 2000-08-25 |
| 2001 | 2001-05-23 | 2001-09-25 |
| 2002 | 2002-06-13 | 2002-09-12 |
| 2003 | 2003-06-05 | 2003-10-03 |
| 2004 | 2004-06-04 | 2004-09-01 |
| 2005 | 2005-04-27 | 2005-09-02 |
| 2006 | 2006-05-18 | 2006-09-13 |
| 2007 | 2007-06-01 | 2007-09-16 |
| 2010 | 2010-07-07 | 2010-08-27 |
| 2011 | 2011-07-04 | 2011-09-25 |
| 2014 | 2014-07-02 | 2014-09-08 |
| 2015 | 2015-05-22 | 2015-09-13 |
| 2016 | 2016-05-08 | 2016-09-16 |
| 2017 | 2017-05-23 | 2017-09-13 |
| 2018 | 2018-05-14 | 2018-09-08 |
| 2019 | 2019-05-11 | 2019-09-07 |
| 2020 | 2020-05-30 | 2020-09-11 |
| 2021 | 2021-05-17 | 2021-09-09 |
| 2022 | 2022-06-27 | 2022-09-07 |
| 2023 | 2023-04-30 | 2023-09-17 |
| 2024 | 2024-05-11 | 2024-09-10 |
| 2025 | 2025-05-26 | 2025-09-19 |
| 2026 | 2026-05-04 | 2026-09-22 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 63 | 82 | 2025 | 60 |
| 35 C (95 F): Days | 60 | 34 | 2021 | 11 |
| 40 C (104 F): Days | 9 | 8 | 2021 | 1 |
| 90 F (32.2 C): Days | 63 | 53 | 2025 | 31 |
| 100 F (37.8 C): Days | 39 | 12 | 2021 | 4 |
| 110 F (43.3 C): Days | 2 | 1 | 2015 | 1 |
| 0 C (32 F): Ice days (max | 63 | 73 | 2022 | 6 |
| 0 C (32 F): Frost days (min | 63 | 146 | 1982 | 62 |
| -10 C (14 F): Days with min | 58 | 36 | 2022 | 21 |
| -20 C (-4 F): Days with min | 10 | 4 | 1968 | 4 |
| 20 C (68 F): Tropical nights (min | 57 | 20 | 2021 | 3 |
| 25 C (77 F): Days with min | 3 | 1 | 1960 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 65 | 18 | 1983 | 5 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 30 | 2 | 1981 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 44 | 6 | 1973 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 2 | 1971 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.
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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).