Williamsburg Threshold Days by Year (USC00369714)

6 fixed thresholds counted per year at Williamsburg (USC00369714): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Williamsburg Thresholds

Williamsburg: days with 10 mm (0.39 in) or more of precipitation in 66 years, most in 2018 with 56.
Williamsburg: days with 25 mm (0.98 in) or more of precipitation in 66 years, most in 2018 with 17.
Williamsburg: days with 10 cm (3.9 in) or more of snowfall in 51 years, most in 1961 with 8.
Williamsburg: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1952 with 3.
6 fixed thresholds have at least one qualifying day at Williamsburg.

Days with 10 mm (0.39 in) or more of precipitation

66 years with a qualifying day

Days per year at Williamsburg with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 56 in 2018.

Days with 10 mm (0.39 in) or more of precipitation per year at Williamsburg
Year	Days	Decade average
1950	39	37.1
1951	43	37.1
1952	40	37.1
1953	32	37.1
1954	39	37.1
1955	28	37.1
1956	43	37.1
1957	28	37.1
1958	40	37.1
1959	39	37.1
1960	31	30.5
1961	38	30.5
1962	35	30.5
1963	28	30.5
1964	31	30.5
1965	24	30.5
1966	30	30.5
1967	33	30.5
1968	33	30.5
1969	22	30.5
1970	45	36.4
1971	39	36.4
1972	36	36.4
1975	33	36.4
1976	34	36.4
1977	31	36.4
1978	37	36.4
1979	36	36.4
1980	27	32.2
1981	29	32.2
1982	31	32.2
1983	38	32.2
1986	36	32.2
1987	32	32.2
1995	28	33.2
1996	41	33.2
1997	32	33.2
1998	33	33.2
1999	32	33.2
2000	28	34.2
2001	22	34.2
2002	39	34.2
2003	45	34.2
2004	47	34.2
2005	33	34.2
2006	36	34.2
2007	31	34.2
2008	32	34.2
2009	29	34.2
2010	27	33.5
2011	47	33.5
2012	35	33.5
2013	23	33.5
2014	27	33.5
2015	26	33.5
2016	25	33.5
2017	31	33.5
2018	56	33.5
2019	38	33.5
2020	33	32.3
2021	28	32.3
2022	33	32.3
2023	34	32.3
2024	41	32.3
2025	32	32.3
2026	25	32.3

For each year, a bar from the first to the last day at Williamsburg meeting 10 mm (0.39 in).

First to last qualifying date each year at Williamsburg
Year	First date	Last date
1950	1950-01-03	1950-12-16
1951	1951-01-03	1951-12-21
1952	1952-01-03	1952-12-11
1953	1953-01-01	1953-12-14
1954	1954-01-11	1954-12-30
1955	1955-02-07	1955-11-17
1956	1956-01-10	1956-12-21
1957	1957-01-10	1957-12-27
1958	1958-01-15	1958-12-09
1959	1959-01-02	1959-12-22
1960	1960-01-03	1960-11-01
1961	1961-01-01	1961-12-28
1962	1962-01-07	1962-12-30
1963	1963-01-12	1963-12-24
1964	1964-01-02	1964-12-27
1965	1965-01-02	1965-11-27
1966	1966-01-03	1966-12-29
1967	1967-01-28	1967-12-29
1968	1968-01-14	1968-12-04
1969	1969-03-25	1969-12-31
1970	1970-02-03	1970-12-24
1971	1971-01-01	1971-12-07
1972	1972-02-04	1972-12-22
1975	1975-01-01	1975-12-26
1976	1976-01-01	1976-12-07
1977	1977-02-25	1977-12-21
1978	1978-01-08	1978-12-25
1979	1979-01-02	1979-12-25
1980	1980-01-15	1980-12-10
1981	1981-02-02	1981-12-02
1982	1982-01-01	1982-12-16
1983	1983-02-03	1983-12-29
1986	1986-01-20	1986-12-25
1987	1987-01-02	1987-12-29
1995	1995-01-16	1995-12-20
1996	1996-01-03	1996-12-13
1997	1997-01-25	1997-11-22
1998	1998-01-08	1998-10-10
1999	1999-01-03	1999-12-15
2000	2000-02-14	2000-12-17
2001	2001-03-05	2001-12-18
2002	2002-01-07	2002-12-26
2003	2003-01-02	2003-12-25
2004	2004-01-04	2004-12-10
2005	2005-01-04	2005-12-26
2006	2006-01-03	2006-12-23
2007	2007-01-08	2007-12-24
2008	2008-01-11	2008-12-25
2009	2009-01-07	2009-12-26
2010	2010-01-18	2010-12-02
2011	2011-02-02	2011-12-28
2012	2012-01-12	2012-12-27
2013	2013-01-16	2013-12-30
2014	2014-02-05	2014-12-07
2015	2015-01-04	2015-12-29
2016	2016-01-10	2016-12-17
2017	2017-01-04	2017-11-19
2018	2018-01-13	2018-12-28
2019	2019-01-01	2019-12-30
2020	2020-01-12	2020-12-25
2021	2021-01-02	2021-12-29
2022	2022-01-02	2022-12-23
2023	2023-01-04	2023-12-28
2024	2024-01-07	2024-12-16
2025	2025-01-01	2025-12-27
2026	2026-01-26	2026-08-23

Every Fixed Threshold

Fixed thresholds at Williamsburg
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	66	56	2018	25
25 mm (0.98 in): Days with 25 mm or more rain	66	17	2018	6
50 mm (1.97 in): Days with 50 mm or more rain	39	3	1952	1
100 mm (3.94 in): Days with 100 mm or more rain	8	2	2004	1
10 cm (3.9 in): Days with 10 cm or more snowfall	51	8	1961	1
25 cm (9.8 in): Days with 25 cm or more snowfall	11	3	1971	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

Data for Williamsburg threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Williamsburg Threshold Days by Year (USC00369714)

Key Facts for Williamsburg Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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