Baltimore-Washington Intl AP Threshold Days by Year
18 fixed thresholds counted per year at Baltimore-Washington Intl AP (USW00093721): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Baltimore-Washington Intl AP Thresholds
- Baltimore-Washington Intl AP: days with a maximum temperature at or above 30 C (86 F) in 87 years, most in 2019 with 94.
- Baltimore-Washington Intl AP: days with a maximum temperature at or above 90 F (32.2 C) in 87 years, most in 2010 with 59.
- Baltimore-Washington Intl AP: nights with a minimum temperature at or below 0 C (32 F) in 87 years, most in 1962 with 116.
- Baltimore-Washington Intl AP: nights with a minimum temperature at or above 20 C (68 F) in 87 years, most in 2020 with 72.
- 18 fixed thresholds have at least one qualifying day at Baltimore-Washington Intl AP.
Days at or above 30 C (86 F)
87 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1940 | 39 | 58.2 |
| 1941 | 72 | 58.2 |
| 1942 | 65 | 58.2 |
| 1943 | 78 | 58.2 |
| 1944 | 66 | 58.2 |
| 1945 | 57 | 58.2 |
| 1946 | 46 | 58.2 |
| 1947 | 55 | 58.2 |
| 1948 | 45 | 58.2 |
| 1949 | 59 | 58.2 |
| 1950 | 44 | 59.1 |
| 1951 | 66 | 59.1 |
| 1952 | 65 | 59.1 |
| 1953 | 67 | 59.1 |
| 1954 | 55 | 59.1 |
| 1955 | 55 | 59.1 |
| 1956 | 51 | 59.1 |
| 1957 | 69 | 59.1 |
| 1958 | 45 | 59.1 |
| 1959 | 74 | 59.1 |
| 1960 | 53 | 62 |
| 1961 | 68 | 62 |
| 1962 | 67 | 62 |
| 1963 | 57 | 62 |
| 1964 | 64 | 62 |
| 1965 | 68 | 62 |
| 1966 | 78 | 62 |
| 1967 | 37 | 62 |
| 1968 | 61 | 62 |
| 1969 | 67 | 62 |
| 1970 | 77 | 54.9 |
| 1971 | 47 | 54.9 |
| 1972 | 40 | 54.9 |
| 1973 | 49 | 54.9 |
| 1974 | 46 | 54.9 |
| 1975 | 50 | 54.9 |
| 1976 | 54 | 54.9 |
| 1977 | 78 | 54.9 |
| 1978 | 56 | 54.9 |
| 1979 | 52 | 54.9 |
| 1980 | 76 | 58.4 |
| 1981 | 51 | 58.4 |
| 1982 | 44 | 58.4 |
| 1983 | 71 | 58.4 |
| 1984 | 45 | 58.4 |
| 1985 | 52 | 58.4 |
| 1986 | 71 | 58.4 |
| 1987 | 68 | 58.4 |
| 1988 | 68 | 58.4 |
| 1989 | 38 | 58.4 |
| 1990 | 54 | 64.8 |
| 1991 | 92 | 64.8 |
| 1992 | 43 | 64.8 |
| 1993 | 70 | 64.8 |
| 1994 | 68 | 64.8 |
| 1995 | 78 | 64.8 |
| 1996 | 50 | 64.8 |
| 1997 | 58 | 64.8 |
| 1998 | 80 | 64.8 |
| 1999 | 55 | 64.8 |
| 2000 | 36 | 55.5 |
| 2001 | 48 | 55.5 |
| 2002 | 71 | 55.5 |
| 2003 | 34 | 55.5 |
| 2004 | 50 | 55.5 |
| 2005 | 72 | 55.5 |
| 2006 | 65 | 55.5 |
| 2007 | 77 | 55.5 |
| 2008 | 60 | 55.5 |
| 2009 | 42 | 55.5 |
| 2010 | 87 | 71 |
| 2011 | 69 | 71 |
| 2012 | 74 | 71 |
| 2013 | 59 | 71 |
| 2014 | 42 | 71 |
| 2015 | 69 | 71 |
| 2016 | 76 | 71 |
| 2017 | 67 | 71 |
| 2018 | 73 | 71 |
| 2019 | 94 | 71 |
| 2020 | 74 | 74.1 |
| 2021 | 81 | 74.1 |
| 2022 | 74 | 74.1 |
| 2023 | 73 | 74.1 |
| 2024 | 78 | 74.1 |
| 2025 | 64 | 74.1 |
| 2026 | 75 | 74.1 |
| Year | First date | Last date |
|---|---|---|
| 1940 | 1940-05-07 | 1940-09-21 |
| 1941 | 1941-04-14 | 1941-10-07 |
| 1942 | 1942-04-06 | 1942-09-19 |
| 1943 | 1943-05-06 | 1943-09-16 |
| 1944 | 1944-05-05 | 1944-10-07 |
| 1945 | 1945-03-29 | 1945-09-29 |
| 1946 | 1946-05-25 | 1946-09-18 |
| 1947 | 1947-05-13 | 1947-10-21 |
| 1948 | 1948-05-10 | 1948-09-20 |
| 1949 | 1949-05-05 | 1949-10-11 |
| 1950 | 1950-06-07 | 1950-11-01 |
| 1951 | 1951-04-29 | 1951-10-06 |
| 1952 | 1952-04-22 | 1952-09-14 |
| 1953 | 1953-04-25 | 1953-09-30 |
| 1954 | 1954-05-31 | 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 | 1958-05-18 | 1958-10-10 |
| 1959 | 1959-04-09 | 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 | 1963-04-02 | 1963-09-20 |
| 1964 | 1964-04-18 | 1964-09-23 |
| 1965 | 1965-05-03 | 1965-09-23 |
| 1966 | 1966-05-06 | 1966-09-11 |
| 1967 | 1967-04-02 | 1967-10-05 |
| 1968 | 1968-06-05 | 1968-09-25 |
| 1969 | 1969-04-27 | 1969-10-20 |
| 1970 | 1970-05-09 | 1970-10-03 |
| 1971 | 1971-05-19 | 1971-09-10 |
| 1972 | 1972-06-03 | 1972-09-26 |
| 1973 | 1973-04-22 | 1973-09-06 |
| 1974 | 1974-04-29 | 1974-09-13 |
| 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 | 1978-09-21 |
| 1979 | 1979-03-30 | 1979-09-14 |
| 1980 | 1980-05-05 | 1980-09-23 |
| 1981 | 1981-05-22 | 1981-09-22 |
| 1982 | 1982-05-12 | 1982-09-16 |
| 1983 | 1983-04-28 | 1983-09-20 |
| 1984 | 1984-05-19 | 1984-09-25 |
| 1985 | 1985-04-19 | 1985-09-20 |
| 1986 | 1986-05-01 | 1986-10-02 |
| 1987 | 1987-05-10 | 1987-09-15 |
| 1988 | 1988-05-23 | 1988-09-23 |
| 1989 | 1989-05-26 | 1989-10-15 |
| 1990 | 1990-03-12 | 1990-10-09 |
| 1991 | 1991-04-08 | 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 | 1995-10-06 |
| 1996 | 1996-04-22 | 1996-09-10 |
| 1997 | 1997-05-19 | 1997-10-10 |
| 1998 | 1998-03-30 | 1998-09-27 |
| 1999 | 1999-05-22 | 1999-08-29 |
| 2000 | 2000-05-05 | 2000-09-20 |
| 2001 | 2001-04-09 | 2001-08-28 |
| 2002 | 2002-04-16 | 2002-10-03 |
| 2003 | 2003-06-12 | 2003-08-30 |
| 2004 | 2004-04-18 | 2004-09-23 |
| 2005 | 2005-04-19 | 2005-09-23 |
| 2006 | 2006-05-28 | 2006-08-29 |
| 2007 | 2007-05-25 | 2007-10-09 |
| 2008 | 2008-06-07 | 2008-09-14 |
| 2009 | 2009-04-25 | 2009-08-26 |
| 2010 | 2010-04-06 | 2010-09-25 |
| 2011 | 2011-04-04 | 2011-09-14 |
| 2012 | 2012-04-15 | 2012-09-08 |
| 2013 | 2013-04-10 | 2013-10-06 |
| 2014 | 2014-05-12 | 2014-09-11 |
| 2015 | 2015-05-12 | 2015-09-17 |
| 2016 | 2016-04-26 | 2016-10-19 |
| 2017 | 2017-04-11 | 2017-10-10 |
| 2018 | 2018-04-13 | 2018-10-04 |
| 2019 | 2019-05-02 | 2019-10-02 |
| 2020 | 2020-05-15 | 2020-09-06 |
| 2021 | 2021-04-28 | 2021-10-03 |
| 2022 | 2022-04-13 | 2022-09-21 |
| 2023 | 2023-04-06 | 2023-10-03 |
| 2024 | 2024-04-28 | 2024-09-19 |
| 2025 | 2025-03-31 | 2025-09-19 |
| 2026 | 2026-04-01 | 2026-10-02 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 87 | 94 | 2019 | 75 |
| 35 C (95 F): Days | 79 | 24 | 2019 | 13 |
| 40 C (104 F): Days | 7 | 2 | 2012 | 1 |
| 90 F (32.2 C): Days | 87 | 59 | 2010 | 35 |
| 100 F (37.8 C): Days | 36 | 8 | 2024 | 3 |
| 0 C (32 F): Ice days (max | 86 | 29 | 1963 | 13 |
| 0 C (32 F): Frost days (min | 87 | 116 | 1962 | 60 |
| -10 C (14 F): Days with min | 81 | 29 | 1963 | 13 |
| -20 C (-4 F): Days with min | 6 | 2 | 1984 | 1 |
| 20 C (68 F): Tropical nights (min | 87 | 72 | 2020 | 60 |
| 25 C (77 F): Days with min | 39 | 9 | 1995 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 87 | 61 | 2018 | 32 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 87 | 21 | 1979 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 75 | 6 | 1952 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 16 | 2 | 1952 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 63 | 7 | 1996 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 17 | 2 | 2010 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 3 | 1 | 1983 | 1 |
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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-15).