Coulee Dam 1 SW Threshold Days by Year (USC00451767)
17 fixed thresholds counted per year at Coulee Dam 1 SW (USC00451767): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Coulee Dam 1 SW Thresholds
- Coulee Dam 1 SW: days with 10 mm (0.39 in) or more of precipitation in 86 years, most in 1948 with 14.
- Coulee Dam 1 SW: nights with a minimum temperature at or below 0 C (32 F) in 85 years, most in 1985 with 150.
- Coulee Dam 1 SW: days with a maximum temperature at or above 30 C (86 F) in 82 years, most in 1938 with 90.
- Coulee Dam 1 SW: days with a maximum temperature at or above 90 F (32.2 C) in 82 years, most in 1938 with 76.
- 17 fixed thresholds have at least one qualifying day at Coulee Dam 1 SW.
Days at or above 30 C (86 F)
82 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1936 | 70 | 76 |
| 1937 | 68 | 76 |
| 1938 | 90 | 76 |
| 1939 | 76 | 76 |
| 1940 | 84 | 52.4 |
| 1941 | 53 | 52.4 |
| 1942 | 38 | 52.4 |
| 1943 | 45 | 52.4 |
| 1944 | 69 | 52.4 |
| 1945 | 70 | 52.4 |
| 1947 | 39 | 52.4 |
| 1948 | 25 | 52.4 |
| 1949 | 49 | 52.4 |
| 1951 | 48 | 41.1 |
| 1952 | 46 | 41.1 |
| 1953 | 35 | 41.1 |
| 1954 | 21 | 41.1 |
| 1955 | 40 | 41.1 |
| 1956 | 47 | 41.1 |
| 1957 | 28 | 41.1 |
| 1958 | 71 | 41.1 |
| 1959 | 34 | 41.1 |
| 1960 | 45 | 47.7 |
| 1961 | 64 | 47.7 |
| 1962 | 39 | 47.7 |
| 1963 | 51 | 47.7 |
| 1964 | 27 | 47.7 |
| 1965 | 40 | 47.7 |
| 1966 | 42 | 47.7 |
| 1967 | 75 | 47.7 |
| 1968 | 38 | 47.7 |
| 1969 | 56 | 47.7 |
| 1970 | 49 | 44.5 |
| 1971 | 45 | 44.5 |
| 1972 | 42 | 44.5 |
| 1973 | 51 | 44.5 |
| 1974 | 45 | 44.5 |
| 1975 | 34 | 44.5 |
| 1976 | 21 | 44.5 |
| 1977 | 47 | 44.5 |
| 1978 | 39 | 44.5 |
| 1979 | 72 | 44.5 |
| 1980 | 32 | 45.6 |
| 1981 | 49 | 45.6 |
| 1982 | 49 | 45.6 |
| 1983 | 36 | 45.6 |
| 1984 | 47 | 45.6 |
| 1985 | 55 | 45.6 |
| 1986 | 58 | 45.6 |
| 1988 | 53 | 45.6 |
| 1989 | 31 | 45.6 |
| 1990 | 52 | 46.1 |
| 1991 | 44 | 46.1 |
| 1992 | 46 | 46.1 |
| 1994 | 56 | 46.1 |
| 1995 | 43 | 46.1 |
| 1996 | 45 | 46.1 |
| 1997 | 36 | 46.1 |
| 1999 | 47 | 46.1 |
| 2001 | 54 | 51.8 |
| 2002 | 45 | 51.8 |
| 2006 | 65 | 51.8 |
| 2007 | 47 | 51.8 |
| 2008 | 43 | 51.8 |
| 2009 | 57 | 51.8 |
| 2010 | 37 | 52.1 |
| 2011 | 44 | 52.1 |
| 2012 | 50 | 52.1 |
| 2013 | 72 | 52.1 |
| 2014 | 48 | 52.1 |
| 2015 | 63 | 52.1 |
| 2016 | 44 | 52.1 |
| 2017 | 74 | 52.1 |
| 2018 | 49 | 52.1 |
| 2019 | 40 | 52.1 |
| 2020 | 52 | 56.1 |
| 2021 | 64 | 56.1 |
| 2022 | 59 | 56.1 |
| 2023 | 52 | 56.1 |
| 2024 | 49 | 56.1 |
| 2025 | 62 | 56.1 |
| 2026 | 55 | 56.1 |
| Year | First date | Last date |
|---|---|---|
| 1936 | 1936-04-16 | 1936-10-09 |
| 1937 | 1937-05-02 | 1937-09-18 |
| 1938 | 1938-05-21 | 1938-09-27 |
| 1939 | 1939-04-28 | 1939-09-26 |
| 1940 | 1940-05-10 | 1940-09-26 |
| 1941 | 1941-05-11 | 1941-08-22 |
| 1942 | 1942-06-30 | 1942-09-27 |
| 1943 | 1943-06-28 | 1943-09-25 |
| 1944 | 1944-05-06 | 1944-09-12 |
| 1945 | 1945-05-03 | 1945-09-14 |
| 1947 | 1947-04-28 | 1947-09-12 |
| 1948 | 1948-06-06 | 1948-09-13 |
| 1949 | 1949-05-09 | 1949-09-09 |
| 1951 | 1951-05-22 | 1951-09-18 |
| 1952 | 1952-05-27 | 1952-09-26 |
| 1953 | 1953-07-06 | 1953-09-14 |
| 1954 | 1954-05-18 | 1954-08-30 |
| 1955 | 1955-06-09 | 1955-09-10 |
| 1956 | 1956-05-17 | 1956-09-18 |
| 1957 | 1957-05-30 | 1957-09-16 |
| 1958 | 1958-05-18 | 1958-09-10 |
| 1959 | 1959-06-02 | 1959-09-13 |
| 1960 | 1960-06-23 | 1960-09-14 |
| 1961 | 1961-05-25 | 1961-08-30 |
| 1962 | 1962-06-15 | 1962-09-26 |
| 1963 | 1963-05-21 | 1963-09-28 |
| 1964 | 1964-06-23 | 1964-08-23 |
| 1965 | 1965-05-28 | 1965-08-19 |
| 1966 | 1966-05-04 | 1966-09-22 |
| 1967 | 1967-06-15 | 1967-09-28 |
| 1968 | 1968-06-18 | 1968-09-09 |
| 1969 | 1969-05-09 | 1969-09-12 |
| 1970 | 1970-06-03 | 1970-09-01 |
| 1971 | 1971-05-13 | 1971-08-31 |
| 1972 | 1972-05-29 | 1972-09-03 |
| 1973 | 1973-05-14 | 1973-09-12 |
| 1974 | 1974-06-12 | 1974-09-25 |
| 1975 | 1975-06-02 | 1975-09-15 |
| 1976 | 1976-06-29 | 1976-09-05 |
| 1977 | 1977-04-24 | 1977-08-23 |
| 1978 | 1978-06-02 | 1978-08-11 |
| 1979 | 1979-05-22 | 1979-09-21 |
| 1980 | 1980-05-05 | 1980-09-12 |
| 1981 | 1981-06-26 | 1981-09-19 |
| 1982 | 1982-06-11 | 1982-09-08 |
| 1983 | 1983-05-24 | 1983-08-31 |
| 1984 | 1984-05-29 | 1984-09-19 |
| 1985 | 1985-05-16 | 1985-09-04 |
| 1986 | 1986-05-25 | 1986-08-29 |
| 1988 | 1988-05-12 | 1988-09-16 |
| 1989 | 1989-06-05 | 1989-08-12 |
| 1990 | 1990-06-23 | 1990-09-24 |
| 1991 | 1991-07-02 | 1991-09-07 |
| 1992 | 1992-05-05 | 1992-08-21 |
| 1994 | 1994-05-07 | 1994-09-29 |
| 1995 | 1995-05-29 | 1995-09-18 |
| 1996 | 1996-06-07 | 1996-09-12 |
| 1997 | 1997-06-15 | 1997-09-02 |
| 1999 | 1999-05-24 | 1999-09-22 |
| 2001 | 2001-05-22 | 2001-09-24 |
| 2002 | 2002-06-14 | 2002-09-14 |
| 2006 | 2006-05-15 | 2006-09-12 |
| 2007 | 2007-05-31 | 2007-09-14 |
| 2008 | 2008-05-16 | 2008-09-20 |
| 2009 | 2009-05-29 | 2009-09-24 |
| 2010 | 2010-07-07 | 2010-08-26 |
| 2011 | 2011-06-28 | 2011-09-25 |
| 2012 | 2012-05-14 | 2012-09-08 |
| 2013 | 2013-05-07 | 2013-09-15 |
| 2014 | 2014-06-23 | 2014-09-22 |
| 2015 | 2015-05-29 | 2015-09-13 |
| 2016 | 2016-06-04 | 2016-08-30 |
| 2017 | 2017-05-29 | 2017-09-12 |
| 2018 | 2018-06-20 | 2018-09-08 |
| 2019 | 2019-05-29 | 2019-09-06 |
| 2020 | 2020-05-29 | 2020-09-07 |
| 2021 | 2021-06-01 | 2021-09-09 |
| 2022 | 2022-06-26 | 2022-09-28 |
| 2023 | 2023-05-19 | 2023-09-16 |
| 2024 | 2024-06-21 | 2024-09-09 |
| 2025 | 2025-05-28 | 2025-09-19 |
| 2026 | 2026-05-28 | 2026-08-26 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 82 | 90 | 1938 | 55 |
| 35 C (95 F): Days | 80 | 44 | 1938 | 10 |
| 40 C (104 F): Days | 20 | 11 | 1938 | 2 |
| 45 C (113 F): Days | 1 | 1 | 1939 | 1 |
| 90 F (32.2 C): Days | 82 | 76 | 1938 | 32 |
| 100 F (37.8 C): Days | 60 | 20 | 1938 | 2 |
| 110 F (43.3 C): Days | 3 | 3 | 2021 | 3 |
| 0 C (32 F): Ice days (max | 82 | 79 | 1985 | 11 |
| 0 C (32 F): Frost days (min | 85 | 150 | 1985 | 62 |
| -10 C (14 F): Days with min | 81 | 48 | 1985 | 1 |
| -20 C (-4 F): Days with min | 31 | 8 | 1936 | 3 |
| 20 C (68 F): Tropical nights (min | 69 | 19 | 2021 | 3 |
| 25 C (77 F): Days with min | 4 | 2 | 1985 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 86 | 14 | 1948 | 4 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 20 | 2 | 1937 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 1 | 1 | 1996 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 22 | 7 | 1996 | 3 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1936.
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).