Boise Air Terminal Threshold Days by Year (USW00024131)
16 fixed thresholds counted per year at Boise Air Terminal (USW00024131): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Boise Air Terminal Thresholds
- Boise Air Terminal: days with a maximum temperature at or above 30 C (86 F) in 87 years, most in 1994 with 92.
- Boise Air Terminal: days with a maximum temperature at or above 35 C (95 F) in 87 years, most in 2022 with 55.
- Boise Air Terminal: days with a maximum temperature at or above 90 F (32.2 C) in 87 years, most in 2013 with 73.
- Boise Air Terminal: days with a maximum temperature at or below 0 C (32 F) in 87 years, most in 1985 with 78.
- 16 fixed thresholds have at least one qualifying day at Boise Air Terminal.
Days at or above 30 C (86 F)
87 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1940 | 83 | 60.1 |
| 1941 | 47 | 60.1 |
| 1942 | 60 | 60.1 |
| 1943 | 55 | 60.1 |
| 1944 | 50 | 60.1 |
| 1945 | 63 | 60.1 |
| 1946 | 63 | 60.1 |
| 1947 | 62 | 60.1 |
| 1948 | 52 | 60.1 |
| 1949 | 66 | 60.1 |
| 1950 | 59 | 60.6 |
| 1951 | 49 | 60.6 |
| 1952 | 62 | 60.6 |
| 1953 | 56 | 60.6 |
| 1954 | 57 | 60.6 |
| 1955 | 64 | 60.6 |
| 1956 | 63 | 60.6 |
| 1957 | 64 | 60.6 |
| 1958 | 73 | 60.6 |
| 1959 | 59 | 60.6 |
| 1960 | 74 | 66.4 |
| 1961 | 80 | 66.4 |
| 1962 | 59 | 66.4 |
| 1963 | 72 | 66.4 |
| 1964 | 51 | 66.4 |
| 1965 | 49 | 66.4 |
| 1966 | 76 | 66.4 |
| 1967 | 84 | 66.4 |
| 1968 | 59 | 66.4 |
| 1969 | 60 | 66.4 |
| 1970 | 74 | 64.5 |
| 1971 | 61 | 64.5 |
| 1972 | 68 | 64.5 |
| 1973 | 75 | 64.5 |
| 1974 | 74 | 64.5 |
| 1975 | 64 | 64.5 |
| 1976 | 46 | 64.5 |
| 1977 | 67 | 64.5 |
| 1978 | 49 | 64.5 |
| 1979 | 67 | 64.5 |
| 1980 | 50 | 65.7 |
| 1981 | 72 | 65.7 |
| 1982 | 57 | 65.7 |
| 1983 | 56 | 65.7 |
| 1984 | 64 | 65.7 |
| 1985 | 60 | 65.7 |
| 1986 | 74 | 65.7 |
| 1987 | 78 | 65.7 |
| 1988 | 79 | 65.7 |
| 1989 | 67 | 65.7 |
| 1990 | 76 | 70.4 |
| 1991 | 73 | 70.4 |
| 1992 | 78 | 70.4 |
| 1993 | 43 | 70.4 |
| 1994 | 92 | 70.4 |
| 1995 | 65 | 70.4 |
| 1996 | 65 | 70.4 |
| 1997 | 73 | 70.4 |
| 1998 | 70 | 70.4 |
| 1999 | 69 | 70.4 |
| 2000 | 76 | 77.9 |
| 2001 | 86 | 77.9 |
| 2002 | 72 | 77.9 |
| 2003 | 88 | 77.9 |
| 2004 | 70 | 77.9 |
| 2005 | 68 | 77.9 |
| 2006 | 78 | 77.9 |
| 2007 | 89 | 77.9 |
| 2008 | 76 | 77.9 |
| 2009 | 76 | 77.9 |
| 2010 | 69 | 78.6 |
| 2011 | 78 | 78.6 |
| 2012 | 88 | 78.6 |
| 2013 | 89 | 78.6 |
| 2014 | 71 | 78.6 |
| 2015 | 88 | 78.6 |
| 2016 | 70 | 78.6 |
| 2017 | 89 | 78.6 |
| 2018 | 71 | 78.6 |
| 2019 | 73 | 78.6 |
| 2020 | 77 | 84.9 |
| 2021 | 83 | 84.9 |
| 2022 | 86 | 84.9 |
| 2023 | 86 | 84.9 |
| 2024 | 89 | 84.9 |
| 2025 | 90 | 84.9 |
| 2026 | 83 | 84.9 |
| Year | First date | Last date |
|---|---|---|
| 1940 | 1940-05-09 | 1940-09-12 |
| 1941 | 1941-05-11 | 1941-09-10 |
| 1942 | 1942-05-21 | 1942-10-09 |
| 1943 | 1943-06-17 | 1943-10-01 |
| 1944 | 1944-05-14 | 1944-09-12 |
| 1945 | 1945-06-18 | 1945-09-14 |
| 1946 | 1946-04-25 | 1946-09-30 |
| 1947 | 1947-05-02 | 1947-10-04 |
| 1948 | 1948-05-16 | 1948-09-21 |
| 1949 | 1949-05-11 | 1949-09-26 |
| 1950 | 1950-06-04 | 1950-10-13 |
| 1951 | 1951-06-15 | 1951-10-10 |
| 1952 | 1952-05-28 | 1952-09-26 |
| 1953 | 1953-07-03 | 1953-10-09 |
| 1954 | 1954-05-15 | 1954-09-21 |
| 1955 | 1955-05-29 | 1955-09-13 |
| 1956 | 1956-05-17 | 1956-09-26 |
| 1957 | 1957-06-01 | 1957-09-30 |
| 1958 | 1958-05-18 | 1958-09-16 |
| 1959 | 1959-05-13 | 1959-09-12 |
| 1960 | 1960-05-11 | 1960-10-06 |
| 1961 | 1961-05-09 | 1961-09-15 |
| 1962 | 1962-04-14 | 1962-10-02 |
| 1963 | 1963-05-20 | 1963-10-03 |
| 1964 | 1964-05-16 | 1964-09-16 |
| 1965 | 1965-05-29 | 1965-10-08 |
| 1966 | 1966-05-02 | 1966-09-24 |
| 1967 | 1967-05-17 | 1967-09-29 |
| 1968 | 1968-05-19 | 1968-09-13 |
| 1969 | 1969-05-23 | 1969-09-09 |
| 1970 | 1970-05-16 | 1970-09-17 |
| 1971 | 1971-05-26 | 1971-09-10 |
| 1972 | 1972-05-14 | 1972-09-18 |
| 1973 | 1973-05-13 | 1973-09-13 |
| 1974 | 1974-05-26 | 1974-09-20 |
| 1975 | 1975-05-14 | 1975-10-02 |
| 1976 | 1976-05-13 | 1976-09-10 |
| 1977 | 1977-04-23 | 1977-09-13 |
| 1978 | 1978-06-07 | 1978-09-26 |
| 1979 | 1979-05-15 | 1979-09-21 |
| 1980 | 1980-05-20 | 1980-10-07 |
| 1981 | 1981-06-05 | 1981-09-18 |
| 1982 | 1982-06-11 | 1982-09-23 |
| 1983 | 1983-05-24 | 1983-09-13 |
| 1984 | 1984-05-29 | 1984-09-19 |
| 1985 | 1985-05-01 | 1985-08-30 |
| 1986 | 1986-05-19 | 1986-09-07 |
| 1987 | 1987-04-22 | 1987-10-02 |
| 1988 | 1988-05-12 | 1988-10-06 |
| 1989 | 1989-05-06 | 1989-09-29 |
| 1990 | 1990-05-05 | 1990-10-01 |
| 1991 | 1991-06-10 | 1991-10-15 |
| 1992 | 1992-04-29 | 1992-10-01 |
| 1993 | 1993-05-11 | 1993-10-04 |
| 1994 | 1994-04-18 | 1994-09-28 |
| 1995 | 1995-05-30 | 1995-09-16 |
| 1996 | 1996-06-02 | 1996-10-09 |
| 1997 | 1997-05-10 | 1997-10-01 |
| 1998 | 1998-06-29 | 1998-09-17 |
| 1999 | 1999-05-23 | 1999-09-23 |
| 2000 | 2000-04-27 | 2000-09-18 |
| 2001 | 2001-05-11 | 2001-10-01 |
| 2002 | 2002-05-13 | 2002-09-15 |
| 2003 | 2003-05-22 | 2003-09-30 |
| 2004 | 2004-05-04 | 2004-10-08 |
| 2005 | 2005-05-28 | 2005-10-14 |
| 2006 | 2006-05-15 | 2006-09-13 |
| 2007 | 2007-05-12 | 2007-09-14 |
| 2008 | 2008-05-16 | 2008-10-01 |
| 2009 | 2009-04-21 | 2009-09-26 |
| 2010 | 2010-06-14 | 2010-10-03 |
| 2011 | 2011-06-05 | 2011-10-01 |
| 2012 | 2012-04-22 | 2012-09-18 |
| 2013 | 2013-05-11 | 2013-09-20 |
| 2014 | 2014-05-23 | 2014-09-24 |
| 2015 | 2015-05-29 | 2015-10-10 |
| 2016 | 2016-04-21 | 2016-09-30 |
| 2017 | 2017-05-23 | 2017-09-13 |
| 2018 | 2018-04-27 | 2018-09-07 |
| 2019 | 2019-05-12 | 2019-09-15 |
| 2020 | 2020-04-29 | 2020-09-21 |
| 2021 | 2021-05-06 | 2021-10-04 |
| 2022 | 2022-05-26 | 2022-09-28 |
| 2023 | 2023-04-29 | 2023-10-09 |
| 2024 | 2024-05-16 | 2024-10-04 |
| 2025 | 2025-05-09 | 2025-09-28 |
| 2026 | 2026-05-10 | 2026-10-08 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 87 | 92 | 1994 | 83 |
| 35 C (95 F): Days | 87 | 55 | 2022 | 41 |
| 40 C (104 F): Days | 54 | 10 | 2024 | 2 |
| 90 F (32.2 C): Days | 87 | 73 | 2013 | 60 |
| 100 F (37.8 C): Days | 83 | 27 | 2022 | 14 |
| 110 F (43.3 C): Days | 6 | 1 | 1960 | 1 |
| 0 C (32 F): Ice days (max | 87 | 78 | 1985 | 6 |
| 0 C (32 F): Frost days (min | 87 | 162 | 1985 | 48 |
| -10 C (14 F): Days with min | 83 | 62 | 1985 | 4 |
| -20 C (-4 F): Days with min | 28 | 15 | 1985 | 2 |
| -30 C (-22 F): Days with min | 2 | 2 | 1972 | 2 |
| 20 C (68 F): Tropical nights (min | 86 | 29 | 2021 | 24 |
| 25 C (77 F): Days with min | 9 | 4 | 2021 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 87 | 12 | 2019 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 23 | 2 | 1976 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 42 | 4 | 1964 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.
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).