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Built 2026-10-19 (19 October 2026)

Williamstown (South Para Reser Threshold Days by Year (ASN00023820)

4 fixed thresholds counted per year at Williamstown (South Para Reser (ASN00023820): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Williamstown (South Para Reser Thresholds

  • Williamstown (South Para Reser: days with 10 mm (0.39 in) or more of precipitation in 58 years, most in 1992 with 38.
  • Williamstown (South Para Reser: days with 25 mm (0.98 in) or more of precipitation in 54 years, most in 2011 with 10.
  • Williamstown (South Para Reser: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 2010 with 3.
  • Williamstown (South Para Reser: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 2010 with 1.
  • 4 fixed thresholds have at least one qualifying day at Williamstown (South Para Reser.
58 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Williamstown (South Para Reser Days per year at Williamstown (South Para Reser with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1992. 0102030401969: 181970: 231971: 311972: 201973: 211974: 301975: 221976: 71977: 161978: 211979: 231980: 151981: 261982: 111983: 231984: 191985: 161986: 201987: 191988: 241989: 181990: 201991: 211992: 381993: 201994: 121995: 211996: 291997: 181998: 211999: 272000: 302001: 292002: 182003: 262004: 262005: 282006: 182007: 182008: 162009: 272010: 242011: 222012: 172013: 232014: 182015: 172016: 262017: 192018: 152019: 132020: 212021: 202022: 282023: 192024: 122025: 142026: 111969197519811987199319992005201120172023
Days per year at Williamstown (South Para Reser with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1992.
Days with 10 mm (0.39 in) or more of precipitation per year at Williamstown (South Para Reser
YearDaysDecade average
19691818
19702321.4
19713121.4
19722021.4
19732121.4
19743021.4
19752221.4
1976721.4
19771621.4
19782121.4
19792321.4
19801519.1
19812619.1
19821119.1
19832319.1
19841919.1
19851619.1
19862019.1
19871919.1
19882419.1
19891819.1
19902022.7
19912122.7
19923822.7
19932022.7
19941222.7
19952122.7
19962922.7
19971822.7
19982122.7
19992722.7
20003023.6
20012923.6
20021823.6
20032623.6
20042623.6
20052823.6
20061823.6
20071823.6
20081623.6
20092723.6
20102419.4
20112219.4
20121719.4
20132319.4
20141819.4
20151719.4
20162619.4
20171919.4
20181519.4
20191319.4
20202117.9
20212017.9
20222817.9
20231917.9
20241217.9
20251417.9
20261117.9
First to last qualifying date each year at Williamstown (South Para Reser For each year, a bar from the first to the last day at Williamstown (South Para Reser meeting 10 mm (0.39 in). 1969: 9 February 1969 to 2 December 19691970: 1 January 1970 to 5 December 19701971: 15 March 1971 to 10 December 19711972: 7 January 1972 to 13 September 19721973: 4 February 1973 to 30 December 19731974: 28 January 1974 to 24 October 19741975: 8 January 1975 to 31 October 19751976: 2 June 1976 to 2 November 19761977: 14 January 1977 to 2 December 19771978: 9 April 1978 to 19 November 19781979: 17 January 1979 to 15 November 19791980: 18 April 1980 to 6 November 19801981: 27 January 1981 to 10 November 19811982: 8 March 1982 to 27 September 19821983: 3 March 1983 to 15 October 19831984: 24 March 1984 to 11 November 19841985: 16 March 1985 to 26 November 19851986: 16 April 1986 to 7 December 19861987: 25 January 1987 to 1 December 19871988: 24 January 1988 to 26 December 19881989: 9 May 1989 to 2 December 19891990: 17 May 1990 to 22 December 19901991: 14 April 1991 to 6 November 19911992: 12 February 1992 to 20 December 19921993: 24 January 1993 to 23 December 19931994: 7 January 1994 to 7 November 19941995: 15 January 1995 to 5 September 19951996: 1 January 1996 to 6 December 19961997: 15 January 1997 to 18 December 19971998: 13 January 1998 to 11 November 19981999: 7 March 1999 to 3 December 19992000: 20 February 2000 to 22 December 20002001: 17 March 2001 to 23 November 20012002: 21 January 2002 to 31 December 20022003: 1 January 2003 to 22 December 20032004: 22 February 2004 to 9 December 20042005: 4 January 2005 to 16 December 20052006: 2 January 2006 to 22 December 20062007: 20 January 2007 to 22 December 20072008: 3 April 2008 to 13 December 20082009: 4 March 2009 to 29 November 20092010: 13 January 2010 to 8 December 20102011: 12 February 2011 to 18 December 20112012: 8 January 2012 to 11 October 20122013: 14 January 2013 to 17 September 20132014: 14 February 2014 to 1 August 20142015: 9 January 2015 to 8 December 20152016: 30 January 2016 to 28 December 20162017: 14 January 2017 to 1 December 20172018: 15 April 2018 to 22 November 20182019: 8 May 2019 to 2 December 20192020: 1 February 2020 to 30 October 20202021: 26 January 2021 to 12 November 20212022: 23 January 2022 to 19 November 20222023: 29 January 2023 to 12 December 20232024: 7 January 2024 to 27 November 20242025: 27 May 2025 to 29 November 20252026: 16 May 2026 to 10 August 202619691977198519932001200920172025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Williamstown (South Para Reser meeting 10 mm (0.39 in).
First to last qualifying date each year at Williamstown (South Para Reser
YearFirst dateLast date
19691969-02-091969-12-02
19701970-01-011970-12-05
19711971-03-151971-12-10
19721972-01-071972-09-13
19731973-02-041973-12-30
19741974-01-281974-10-24
19751975-01-081975-10-31
19761976-06-021976-11-02
19771977-01-141977-12-02
19781978-04-091978-11-19
19791979-01-171979-11-15
19801980-04-181980-11-06
19811981-01-271981-11-10
19821982-03-081982-09-27
19831983-03-031983-10-15
19841984-03-241984-11-11
19851985-03-161985-11-26
19861986-04-161986-12-07
19871987-01-251987-12-01
19881988-01-241988-12-26
19891989-05-091989-12-02
19901990-05-171990-12-22
19911991-04-141991-11-06
19921992-02-121992-12-20
19931993-01-241993-12-23
19941994-01-071994-11-07
19951995-01-151995-09-05
19961996-01-011996-12-06
19971997-01-151997-12-18
19981998-01-131998-11-11
19991999-03-071999-12-03
20002000-02-202000-12-22
20012001-03-172001-11-23
20022002-01-212002-12-31
20032003-01-012003-12-22
20042004-02-222004-12-09
20052005-01-042005-12-16
20062006-01-022006-12-22
20072007-01-202007-12-22
20082008-04-032008-12-13
20092009-03-042009-11-29
20102010-01-132010-12-08
20112011-02-122011-12-18
20122012-01-082012-10-11
20132013-01-142013-09-17
20142014-02-142014-08-01
20152015-01-092015-12-08
20162016-01-302016-12-28
20172017-01-142017-12-01
20182018-04-152018-11-22
20192019-05-082019-12-02
20202020-02-012020-10-30
20212021-01-262021-11-12
20222022-01-232022-11-19
20232023-01-292023-12-12
20242024-01-072024-11-27
20252025-05-272025-11-29
20262026-05-162026-08-10

Every Fixed Threshold

Fixed thresholds at Williamstown (South Para Reser
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5838199211
25 mm (0.98 in): Days with 25 mm or more rain541020113
50 mm (1.97 in): Days with 50 mm or more rain14320101
100 mm (3.94 in): Days with 100 mm or more rain1120101

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Williamstown (South Para Reser 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 (2026-10-12).