Washington, D.C. Threshold Days: Hot, Cold and Wet Days per Year
17 fixed thresholds counted per year for Washington, D.C.: days at or above 30 C and 100 F, frost, tropical nights and heavy rain, with rankings and streaks.
Key Facts for Washington, D.C. Thresholds
- Washington, D.C.: days with a maximum temperature at or above 30 C (86 F) in 85 years, most in 2010 with 97.
- Washington, D.C.: days with a maximum temperature at or above 90 F (32.2 C) in 85 years, most in 1980 with 67.
- Washington, D.C.: nights with a minimum temperature at or below Frost days (min at or below 0 C) (32 F) in 85 years, most in 1943 with 92.
- Washington, D.C.: nights with a minimum temperature at or above Tropical nights (min at or above 20 C) (68 F) in 85 years, most in 2018 with 105.
- 17 fixed thresholds have at least one qualifying day at Washington, D.C..
Days at or above 30 C (86 F)
85 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1942 | 57 | 57.8 |
| 1943 | 76 | 57.8 |
| 1944 | 64 | 57.8 |
| 1945 | 57 | 57.8 |
| 1946 | 45 | 57.8 |
| 1947 | 54 | 57.8 |
| 1948 | 49 | 57.8 |
| 1949 | 60 | 57.8 |
| 1950 | 46 | 64.1 |
| 1951 | 63 | 64.1 |
| 1952 | 69 | 64.1 |
| 1953 | 65 | 64.1 |
| 1954 | 69 | 64.1 |
| 1955 | 54 | 64.1 |
| 1956 | 54 | 64.1 |
| 1957 | 81 | 64.1 |
| 1958 | 54 | 64.1 |
| 1959 | 86 | 64.1 |
| 1960 | 64 | 69.1 |
| 1961 | 73 | 69.1 |
| 1962 | 64 | 69.1 |
| 1963 | 65 | 69.1 |
| 1964 | 75 | 69.1 |
| 1965 | 77 | 69.1 |
| 1966 | 81 | 69.1 |
| 1967 | 56 | 69.1 |
| 1968 | 65 | 69.1 |
| 1969 | 71 | 69.1 |
| 1970 | 89 | 68.8 |
| 1971 | 60 | 68.8 |
| 1972 | 44 | 68.8 |
| 1973 | 78 | 68.8 |
| 1974 | 61 | 68.8 |
| 1975 | 66 | 68.8 |
| 1976 | 73 | 68.8 |
| 1977 | 79 | 68.8 |
| 1978 | 83 | 68.8 |
| 1979 | 55 | 68.8 |
| 1980 | 86 | 66.5 |
| 1981 | 65 | 66.5 |
| 1982 | 52 | 66.5 |
| 1983 | 76 | 66.5 |
| 1984 | 57 | 66.5 |
| 1985 | 55 | 66.5 |
| 1986 | 79 | 66.5 |
| 1987 | 77 | 66.5 |
| 1988 | 69 | 66.5 |
| 1989 | 49 | 66.5 |
| 1990 | 63 | 71.4 |
| 1991 | 94 | 71.4 |
| 1992 | 40 | 71.4 |
| 1993 | 84 | 71.4 |
| 1994 | 79 | 71.4 |
| 1995 | 75 | 71.4 |
| 1996 | 62 | 71.4 |
| 1997 | 67 | 71.4 |
| 1998 | 81 | 71.4 |
| 1999 | 69 | 71.4 |
| 2000 | 38 | 60.4 |
| 2001 | 50 | 60.4 |
| 2002 | 73 | 60.4 |
| 2003 | 38 | 60.4 |
| 2004 | 51 | 60.4 |
| 2005 | 79 | 60.4 |
| 2006 | 60 | 60.4 |
| 2007 | 82 | 60.4 |
| 2008 | 78 | 60.4 |
| 2009 | 55 | 60.4 |
| 2010 | 97 | 82.4 |
| 2011 | 79 | 82.4 |
| 2012 | 80 | 82.4 |
| 2013 | 72 | 82.4 |
| 2014 | 69 | 82.4 |
| 2015 | 91 | 82.4 |
| 2016 | 88 | 82.4 |
| 2017 | 74 | 82.4 |
| 2018 | 85 | 82.4 |
| 2019 | 89 | 82.4 |
| 2020 | 75 | 77.1 |
| 2021 | 74 | 77.1 |
| 2022 | 79 | 77.1 |
| 2023 | 78 | 77.1 |
| 2024 | 82 | 77.1 |
| 2025 | 66 | 77.1 |
| 2026 | 86 | 77.1 |
| Year | First date | Last date |
|---|---|---|
| 1942 | 1942-04-06 | 1942-09-19 |
| 1943 | 1943-05-06 | 1943-09-16 |
| 1944 | 1944-05-04 | 1944-09-06 |
| 1945 | 1945-03-16 | 1945-09-29 |
| 1946 | 1946-04-23 | 1946-09-22 |
| 1947 | 1947-04-06 | 1947-09-19 |
| 1948 | 1948-03-21 | 1948-09-20 |
| 1949 | 1949-04-15 | 1949-10-10 |
| 1950 | 1950-05-06 | 1950-10-02 |
| 1951 | 1951-04-29 | 1951-10-06 |
| 1952 | 1952-04-20 | 1952-10-02 |
| 1953 | 1953-04-25 | 1953-09-30 |
| 1954 | 1954-05-02 | 1954-10-13 |
| 1955 | 1955-05-05 | 1955-09-20 |
| 1956 | 1956-04-28 | 1956-09-23 |
| 1957 | 1957-04-21 | 1957-09-22 |
| 1958 | 1958-05-04 | 1958-10-10 |
| 1959 | 1959-04-08 | 1959-10-06 |
| 1960 | 1960-04-14 | 1960-09-09 |
| 1961 | 1961-04-25 | 1961-09-25 |
| 1962 | 1962-04-22 | 1962-10-12 |
| 1963 | 1963-03-30 | 1963-09-20 |
| 1964 | 1964-04-17 | 1964-09-23 |
| 1965 | 1965-05-03 | 1965-09-23 |
| 1966 | 1966-04-24 | 1966-09-11 |
| 1967 | 1967-04-02 | 1967-10-05 |
| 1968 | 1968-04-14 | 1968-10-02 |
| 1969 | 1969-04-27 | 1969-10-20 |
| 1970 | 1970-05-09 | 1970-10-03 |
| 1971 | 1971-05-19 | 1971-09-16 |
| 1972 | 1972-06-03 | 1972-09-26 |
| 1973 | 1973-04-22 | 1973-10-05 |
| 1974 | 1974-04-29 | 1974-11-01 |
| 1975 | 1975-05-20 | 1975-10-15 |
| 1976 | 1976-04-16 | 1976-09-14 |
| 1977 | 1977-04-12 | 1977-09-20 |
| 1978 | 1978-04-01 | 1978-09-22 |
| 1979 | 1979-05-08 | 1979-09-14 |
| 1980 | 1980-05-05 | 1980-09-23 |
| 1981 | 1981-04-03 | 1981-10-01 |
| 1982 | 1982-05-07 | 1982-09-18 |
| 1983 | 1983-04-28 | 1983-09-20 |
| 1984 | 1984-05-19 | 1984-09-25 |
| 1985 | 1985-04-19 | 1985-09-10 |
| 1986 | 1986-05-01 | 1986-10-04 |
| 1987 | 1987-05-10 | 1987-09-18 |
| 1988 | 1988-05-29 | 1988-09-23 |
| 1989 | 1989-05-18 | 1989-09-22 |
| 1990 | 1990-03-12 | 1990-10-10 |
| 1991 | 1991-04-07 | 1991-09-18 |
| 1992 | 1992-05-02 | 1992-09-22 |
| 1993 | 1993-05-11 | 1993-09-15 |
| 1994 | 1994-04-25 | 1994-09-17 |
| 1995 | 1995-04-19 | 1995-09-14 |
| 1996 | 1996-04-22 | 1996-09-10 |
| 1997 | 1997-05-18 | 1997-10-10 |
| 1998 | 1998-03-30 | 1998-09-27 |
| 1999 | 1999-05-22 | 1999-09-09 |
| 2000 | 2000-05-05 | 2000-09-01 |
| 2001 | 2001-04-09 | 2001-09-10 |
| 2002 | 2002-04-15 | 2002-10-05 |
| 2003 | 2003-06-11 | 2003-08-30 |
| 2004 | 2004-04-18 | 2004-09-23 |
| 2005 | 2005-04-20 | 2005-09-23 |
| 2006 | 2006-05-28 | 2006-08-29 |
| 2007 | 2007-04-30 | 2007-10-09 |
| 2008 | 2008-05-31 | 2008-09-15 |
| 2009 | 2009-04-25 | 2009-09-24 |
| 2010 | 2010-04-06 | 2010-10-11 |
| 2011 | 2011-04-20 | 2011-09-14 |
| 2012 | 2012-04-16 | 2012-09-08 |
| 2013 | 2013-04-09 | 2013-10-06 |
| 2014 | 2014-05-08 | 2014-09-21 |
| 2015 | 2015-05-05 | 2015-09-19 |
| 2016 | 2016-04-26 | 2016-10-19 |
| 2017 | 2017-04-16 | 2017-10-10 |
| 2018 | 2018-04-13 | 2018-10-04 |
| 2019 | 2019-05-02 | 2019-10-02 |
| 2020 | 2020-05-15 | 2020-09-08 |
| 2021 | 2021-04-28 | 2021-09-15 |
| 2022 | 2022-04-13 | 2022-09-21 |
| 2023 | 2023-04-05 | 2023-10-28 |
| 2024 | 2024-04-29 | 2024-09-20 |
| 2025 | 2025-03-29 | 2025-09-19 |
| 2026 | 2026-03-11 | 2026-10-02 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days | Page |
|---|---|---|---|---|---|
| 30 C (86 F): Days | 85 | 97 | 2010 | 86 | Full page |
| 35 C (95 F): Days | 81 | 29 | 2012 | 15 | Full page |
| 40 C (104 F): Days | 5 | 2 | 2012 | 1 | Full page |
| 90 F (32.2 C): Days | 85 | 67 | 1980 | 50 | Full page |
| 100 F (37.8 C): Days | 29 | 8 | 2012 | 4 | Full page |
| Ice days (max at or below 0 C) (32 F): Ice days (max | 82 | 20 | 1958 | 10 | Full page |
| Frost days (min at or below 0 C) (32 F): Frost days (min | 85 | 92 | 1943 | 42 | Full page |
| -10 C (14 F): Days with min | 61 | 12 | 1963 | 7 | Full page |
| -20 C (-4 F): Days with min | 3 | 1 | 1982 | 1 | Too few years |
| Tropical nights (min at or above 20 C) (68 F): Tropical nights (min | 85 | 105 | 2018 | 88 | Full page |
| 25 C (77 F): Days with min | 61 | 19 | 1980 | 6 | Full page |
| Days with 10 mm or more rain (0.39 in): Days with 10 mm or more rain | 85 | 53 | 2018 | 24 | Full page |
| Days with 25 mm or more rain (0.98 in): Days with 25 mm or more rain | 85 | 24 | 2018 | 3 | Full page |
| Days with 50 mm or more rain (1.97 in): Days with 50 mm or more rain | 63 | 7 | 2020 | 1 | Full page |
| Days with 100 mm or more rain (3.94 in): Days with 100 mm or more rain | 13 | 2 | 2006 | 1 | Full page |
| Days with 10 cm or more snowfall (3.9 in): Days with 10 cm or more snowfall | 51 | 5 | 1966 | 1 | Full page |
| Days with 25 cm or more snowfall (9.8 in): Days with 25 cm or more snowfall | 10 | 2 | 1987 | 1 | Full page |
A full page with streaks and every date exists for thresholds with at least 5 qualifying years. Years with under 90 percent of days observed are left out of the most days column.
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 2026-10-12 (12 October 2026). Threshold counts are computed by this site from the threaded city record.
Data as of . Last revised (2026-10-12).