Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Williamsburg Threshold Days by Year (USC00148892)

7 fixed thresholds counted per year at Williamsburg (USC00148892): 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 40 years, most in 1985 with 45.
  • Williamsburg: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1973 with 18.
  • Williamsburg: days with 50 mm (1.97 in) or more of precipitation in 35 years, most in 2009 with 6.
  • Williamsburg: days with 10 cm (3.9 in) or more of snowfall in 18 years, most in 2010 with 4.
  • 7 fixed thresholds have at least one qualifying day at Williamsburg.
40 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Williamsburg 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 45 in 1985. 02040601971: 251972: 281973: 441974: 251975: 231976: 171977: 341978: 211979: 301980: 221981: 331982: 321983: 311984: 301985: 451986: 331987: 361988: 261989: 301990: 331991: 251992: 441993: 391994: 271995: 241996: 321997: 381998: 321999: 362000: 222001: 252002: 252003: 212004: 372005: 312006: 302007: 342008: 412009: 412010: 301971197519791983198719911995199920032007
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 45 in 1985.
Days with 10 mm (0.39 in) or more of precipitation per year at Williamsburg
YearDaysDecade average
19712527.4
19722827.4
19734427.4
19742527.4
19752327.4
19761727.4
19773427.4
19782127.4
19793027.4
19802231.8
19813331.8
19823231.8
19833131.8
19843031.8
19854531.8
19863331.8
19873631.8
19882631.8
19893031.8
19903333
19912533
19924433
19933933
19942733
19952433
19963233
19973833
19983233
19993633
20002230.7
20012530.7
20022530.7
20032130.7
20043730.7
20053130.7
20063030.7
20073430.7
20084130.7
20094130.7
20103030
First to last qualifying date each year at Williamsburg For each year, a bar from the first to the last day at Williamsburg meeting 10 mm (0.39 in). 1971: 3 January 1971 to 30 December 19711972: 24 March 1972 to 30 December 19721973: 3 January 1973 to 24 December 19731974: 22 February 1974 to 31 December 19741975: 31 January 1975 to 30 November 19751976: 4 March 1976 to 30 October 19761977: 4 January 1977 to 1 November 19771978: 13 February 1978 to 31 December 19781979: 1 January 1979 to 21 November 19791980: 19 January 1980 to 8 December 19801981: 10 February 1981 to 30 November 19811982: 29 January 1982 to 28 December 19821983: 1 February 1983 to 11 December 19831984: 17 March 1984 to 29 December 19841985: 1 January 1985 to 11 December 19851986: 3 February 1986 to 7 December 19861987: 15 February 1987 to 20 December 19871988: 19 January 1988 to 27 December 19881989: 29 January 1989 to 30 October 19891990: 17 January 1990 to 27 November 19901991: 17 March 1991 to 20 December 19911992: 1 January 1992 to 15 December 19921993: 9 January 1993 to 13 December 19931994: 27 January 1994 to 7 December 19941995: 7 March 1995 to 19 December 19951996: 18 January 1996 to 1 December 19961997: 21 February 1997 to 24 December 19971998: 8 March 1998 to 6 December 19981999: 30 January 1999 to 9 December 19992000: 18 February 2000 to 14 December 20002001: 29 January 2001 to 16 October 20012002: 31 January 2002 to 24 October 20022003: 14 February 2003 to 13 December 20032004: 4 January 2004 to 6 December 20042005: 3 January 2005 to 24 December 20052006: 20 March 2006 to 31 December 20062007: 15 January 2007 to 23 December 20072008: 17 January 2008 to 27 December 20082009: 11 February 2009 to 23 December 20092010: 9 March 2010 to 12 October 201019711976198119861991199620012006JanFebMarAprMayJunJulAugSepOctNovDec
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
YearFirst dateLast date
19711971-01-031971-12-30
19721972-03-241972-12-30
19731973-01-031973-12-24
19741974-02-221974-12-31
19751975-01-311975-11-30
19761976-03-041976-10-30
19771977-01-041977-11-01
19781978-02-131978-12-31
19791979-01-011979-11-21
19801980-01-191980-12-08
19811981-02-101981-11-30
19821982-01-291982-12-28
19831983-02-011983-12-11
19841984-03-171984-12-29
19851985-01-011985-12-11
19861986-02-031986-12-07
19871987-02-151987-12-20
19881988-01-191988-12-27
19891989-01-291989-10-30
19901990-01-171990-11-27
19911991-03-171991-12-20
19921992-01-011992-12-15
19931993-01-091993-12-13
19941994-01-271994-12-07
19951995-03-071995-12-19
19961996-01-181996-12-01
19971997-02-211997-12-24
19981998-03-081998-12-06
19991999-01-301999-12-09
20002000-02-182000-12-14
20012001-01-292001-10-16
20022002-01-312002-10-24
20032003-02-142003-12-13
20042004-01-042004-12-06
20052005-01-032005-12-24
20062006-03-202006-12-31
20072007-01-152007-12-23
20082008-01-172008-12-27
20092009-02-112009-12-23
20102010-03-092010-10-12

Every Fixed Threshold

Fixed thresholds at Williamsburg
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4045198530
25 mm (0.98 in): Days with 25 mm or more rain4018197314
50 mm (1.97 in): Days with 50 mm or more rain35620096
100 mm (3.94 in): Days with 100 mm or more rain13220051
200 mm (7.87 in): Days with 200 mm or more rain1120071
10 cm (3.9 in): Days with 10 cm or more snowfall18420104
25 cm (9.8 in): Days with 25 cm or more snowfall1119801

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1971.

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 . Last revised (2025-12-31).