Mount Vernon Threshold Days by Year
5 fixed thresholds counted per year at Mount Vernon (ASN00007059): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mount Vernon Thresholds
- Mount Vernon: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1942 with 18.
- Mount Vernon: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1942 with 10.
- Mount Vernon: days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 1961 with 3.
- Mount Vernon: days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1997 with 2.
- 5 fixed thresholds have at least one qualifying day at Mount Vernon.
Days with 10 mm (0.39 in) or more of precipitation
70 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1940 | 3 | 7.6 |
| 1941 | 6 | 7.6 |
| 1942 | 18 | 7.6 |
| 1943 | 4 | 7.6 |
| 1944 | 1 | 7.6 |
| 1945 | 7 | 7.6 |
| 1946 | 9 | 7.6 |
| 1947 | 8 | 7.6 |
| 1948 | 10 | 7.6 |
| 1949 | 10 | 7.6 |
| 1950 | 3 | 4.1 |
| 1951 | 5 | 4.1 |
| 1952 | 7 | 4.1 |
| 1953 | 3 | 4.1 |
| 1955 | 6 | 4.1 |
| 1956 | 1 | 4.1 |
| 1959 | 4 | 4.1 |
| 1960 | 10 | 6.7 |
| 1961 | 4 | 6.7 |
| 1962 | 7 | 6.7 |
| 1963 | 15 | 6.7 |
| 1964 | 4 | 6.7 |
| 1965 | 5 | 6.7 |
| 1966 | 6 | 6.7 |
| 1967 | 5 | 6.7 |
| 1969 | 4 | 6.7 |
| 1970 | 4 | 5.8 |
| 1971 | 8 | 5.8 |
| 1972 | 2 | 5.8 |
| 1974 | 9 | 5.8 |
| 1975 | 8 | 5.8 |
| 1976 | 3 | 5.8 |
| 1977 | 3 | 5.8 |
| 1978 | 8 | 5.8 |
| 1979 | 7 | 5.8 |
| 1980 | 12 | 7.9 |
| 1981 | 6 | 7.9 |
| 1982 | 12 | 7.9 |
| 1983 | 2 | 7.9 |
| 1984 | 10 | 7.9 |
| 1985 | 6 | 7.9 |
| 1986 | 6 | 7.9 |
| 1989 | 9 | 7.9 |
| 1990 | 6 | 8.4 |
| 1991 | 4 | 8.4 |
| 1992 | 11 | 8.4 |
| 1993 | 5 | 8.4 |
| 1994 | 5 | 8.4 |
| 1995 | 12 | 8.4 |
| 1996 | 8 | 8.4 |
| 1997 | 14 | 8.4 |
| 1998 | 8 | 8.4 |
| 1999 | 11 | 8.4 |
| 2000 | 13 | 7.3 |
| 2001 | 4 | 7.3 |
| 2002 | 5 | 7.3 |
| 2003 | 5 | 7.3 |
| 2004 | 6 | 7.3 |
| 2005 | 4 | 7.3 |
| 2006 | 15 | 7.3 |
| 2007 | 5 | 7.3 |
| 2008 | 11 | 7.3 |
| 2009 | 5 | 7.3 |
| 2010 | 5 | 10 |
| 2012 | 14 | 10 |
| 2015 | 12 | 10 |
| 2016 | 9 | 10 |
| 2021 | 9 | 8.3 |
| 2022 | 13 | 8.3 |
| 2026 | 3 | 8.3 |
| Year | First date | Last date |
|---|---|---|
| 1940 | 1940-01-07 | 1940-08-11 |
| 1941 | 1941-02-28 | 1941-12-15 |
| 1942 | 1942-01-17 | 1942-12-28 |
| 1943 | 1943-01-10 | 1943-11-10 |
| 1944 | 1944-04-02 | 1944-04-02 |
| 1945 | 1945-01-01 | 1945-10-13 |
| 1946 | 1946-01-19 | 1946-07-09 |
| 1947 | 1947-02-25 | 1947-10-25 |
| 1948 | 1948-02-22 | 1948-07-18 |
| 1949 | 1949-02-18 | 1949-12-10 |
| 1950 | 1950-05-26 | 1950-11-05 |
| 1951 | 1951-02-11 | 1951-06-09 |
| 1952 | 1952-01-22 | 1952-07-11 |
| 1953 | 1953-03-21 | 1953-05-13 |
| 1955 | 1955-01-01 | 1955-12-11 |
| 1956 | 1956-06-24 | 1956-06-24 |
| 1959 | 1959-04-11 | 1959-07-26 |
| 1960 | 1960-01-30 | 1960-03-31 |
| 1961 | 1961-01-25 | 1961-05-17 |
| 1962 | 1962-01-30 | 1962-10-30 |
| 1963 | 1963-01-08 | 1963-05-28 |
| 1964 | 1964-01-09 | 1964-05-11 |
| 1965 | 1965-03-11 | 1965-07-12 |
| 1966 | 1966-01-05 | 1966-10-22 |
| 1967 | 1967-01-30 | 1967-08-09 |
| 1969 | 1969-02-20 | 1969-06-13 |
| 1970 | 1970-04-30 | 1970-09-10 |
| 1971 | 1971-01-29 | 1971-07-30 |
| 1972 | 1972-06-22 | 1972-07-02 |
| 1974 | 1974-01-02 | 1974-08-14 |
| 1975 | 1975-02-21 | 1975-12-11 |
| 1976 | 1976-03-04 | 1976-10-09 |
| 1977 | 1977-11-15 | 1977-12-29 |
| 1978 | 1978-02-13 | 1978-08-16 |
| 1979 | 1979-02-13 | 1979-12-11 |
| 1980 | 1980-01-12 | 1980-12-16 |
| 1981 | 1981-02-16 | 1981-12-11 |
| 1982 | 1982-01-04 | 1982-12-27 |
| 1983 | 1983-03-31 | 1983-04-08 |
| 1984 | 1984-03-02 | 1984-12-13 |
| 1985 | 1985-02-01 | 1985-04-25 |
| 1986 | 1986-01-08 | 1986-09-30 |
| 1989 | 1989-01-06 | 1989-11-07 |
| 1990 | 1990-01-17 | 1990-08-08 |
| 1991 | 1991-06-02 | 1991-07-20 |
| 1992 | 1992-01-07 | 1992-06-12 |
| 1993 | 1993-01-22 | 1993-08-07 |
| 1994 | 1994-02-12 | 1994-02-28 |
| 1995 | 1995-01-06 | 1995-07-20 |
| 1996 | 1996-04-11 | 1996-12-22 |
| 1997 | 1997-01-08 | 1997-09-06 |
| 1998 | 1998-04-14 | 1998-12-08 |
| 1999 | 1999-01-16 | 1999-12-13 |
| 2000 | 2000-01-02 | 2000-04-21 |
| 2001 | 2001-02-08 | 2001-10-06 |
| 2002 | 2002-02-02 | 2002-12-24 |
| 2003 | 2003-01-28 | 2003-04-09 |
| 2004 | 2004-02-13 | 2004-11-23 |
| 2005 | 2005-05-25 | 2005-12-31 |
| 2006 | 2006-01-11 | 2006-10-24 |
| 2007 | 2007-02-27 | 2007-12-11 |
| 2008 | 2008-02-03 | 2008-11-23 |
| 2009 | 2009-01-27 | 2009-06-25 |
| 2010 | 2010-03-22 | 2010-12-17 |
| 2012 | 2012-01-13 | 2012-12-14 |
| 2015 | 2015-02-01 | 2015-11-25 |
| 2016 | 2016-01-25 | 2016-07-06 |
| 2021 | 2021-01-05 | 2021-11-22 |
| 2022 | 2022-01-30 | 2022-09-03 |
| 2026 | 2026-04-13 | 2026-06-12 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 10 mm (0.39 in): Days with 10 mm or more rain | 70 | 18 | 1942 | 3 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 62 | 10 | 1942 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 32 | 3 | 1961 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 6 | 2 | 1997 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 1997 | 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).