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Built 2026-10-18 (18 October 2026)

Mount Wilson (Clarine) Threshold Days by Year

5 fixed thresholds counted per year at Mount Wilson (Clarine) (ASN00063246): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mount Wilson (Clarine) Thresholds

  • Mount Wilson (Clarine): days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 2022 with 73.
  • Mount Wilson (Clarine): days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 2022 with 26.
  • Mount Wilson (Clarine): days with 50 mm (1.97 in) or more of precipitation in 49 years, most in 1996 with 9.
  • Mount Wilson (Clarine): days with 100 mm (3.94 in) or more of precipitation in 24 years, most in 1988 with 3.
  • 5 fixed thresholds have at least one qualifying day at Mount Wilson (Clarine).
49 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Wilson (Clarine) Days per year at Mount Wilson (Clarine) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 73 in 2022. 0204060801970: 331971: 451972: 431974: 281975: 351976: 511977: 351978: 371981: 331982: 241983: 331984: 301985: 351986: 391988: 471989: 441990: 361991: 341992: 281993: 251995: 311996: 232000: 342001: 312002: 262003: 352004: 262005: 342006: 182007: 642008: 422009: 462010: 412011: 442012: 382013: 352014: 362015: 422016: 292017: 332018: 282019: 262020: 452021: 542022: 732023: 322024: 382025: 412026: 281970197619831989199520032008201320182023
Days per year at Mount Wilson (Clarine) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 73 in 2022.
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Wilson (Clarine)
YearDaysDecade average
19703338.4
19714538.4
19724338.4
19742838.4
19753538.4
19765138.4
19773538.4
19783738.4
19813335.6
19822435.6
19833335.6
19843035.6
19853535.6
19863935.6
19884735.6
19894435.6
19903629.5
19913429.5
19922829.5
19932529.5
19953129.5
19962329.5
20003435.6
20013135.6
20022635.6
20033535.6
20042635.6
20053435.6
20061835.6
20076435.6
20084235.6
20094635.6
20104135.2
20114435.2
20123835.2
20133535.2
20143635.2
20154235.2
20162935.2
20173335.2
20182835.2
20192635.2
20204544.4
20215444.4
20227344.4
20233244.4
20243844.4
20254144.4
20262844.4
First to last qualifying date each year at Mount Wilson (Clarine) For each year, a bar from the first to the last day at Mount Wilson (Clarine) meeting 10 mm (0.39 in). 1970: 8 January 1970 to 30 December 19701971: 14 January 1971 to 28 December 19711972: 7 January 1972 to 27 December 19721974: 8 January 1974 to 3 November 19741975: 16 January 1975 to 31 December 19751976: 10 January 1976 to 24 December 19761977: 2 January 1977 to 26 December 19771978: 3 January 1978 to 28 December 19781981: 4 January 1981 to 24 December 19811982: 14 January 1982 to 22 September 19821983: 3 January 1983 to 28 December 19831984: 13 January 1984 to 31 December 19841985: 8 February 1985 to 2 December 19851986: 6 January 1986 to 8 December 19861988: 4 January 1988 to 27 December 19881989: 1 January 1989 to 11 December 19891990: 9 January 1990 to 9 December 19901991: 2 January 1991 to 31 December 19911992: 6 January 1992 to 27 December 19921993: 5 January 1993 to 14 December 19931995: 4 January 1995 to 27 December 19951996: 3 January 1996 to 7 December 19962000: 12 January 2000 to 19 December 20002001: 5 January 2001 to 8 November 20012002: 7 January 2002 to 27 December 20022003: 2 January 2003 to 13 December 20032004: 17 January 2004 to 25 December 20042005: 5 January 2005 to 17 December 20052006: 7 January 2006 to 16 December 20062007: 1 January 2007 to 28 December 20072008: 18 January 2008 to 28 December 20082009: 12 January 2009 to 29 December 20092010: 3 January 2010 to 26 December 20102011: 3 January 2011 to 27 December 20112012: 15 January 2012 to 26 December 20122013: 27 January 2013 to 26 December 20132014: 8 January 2014 to 26 December 20142015: 5 January 2015 to 23 December 20152016: 4 January 2016 to 25 December 20162017: 4 January 2017 to 27 December 20172018: 9 January 2018 to 21 December 20182019: 1 January 2019 to 24 November 20192020: 20 January 2020 to 30 December 20202021: 5 January 2021 to 28 December 20212022: 6 January 2022 to 23 December 20222023: 5 January 2023 to 31 December 20232024: 1 January 2024 to 8 December 20242025: 7 January 2025 to 27 November 20252026: 4 January 2026 to 10 August 20261970197819881996200620132020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mount Wilson (Clarine) meeting 10 mm (0.39 in).
First to last qualifying date each year at Mount Wilson (Clarine)
YearFirst dateLast date
19701970-01-081970-12-30
19711971-01-141971-12-28
19721972-01-071972-12-27
19741974-01-081974-11-03
19751975-01-161975-12-31
19761976-01-101976-12-24
19771977-01-021977-12-26
19781978-01-031978-12-28
19811981-01-041981-12-24
19821982-01-141982-09-22
19831983-01-031983-12-28
19841984-01-131984-12-31
19851985-02-081985-12-02
19861986-01-061986-12-08
19881988-01-041988-12-27
19891989-01-011989-12-11
19901990-01-091990-12-09
19911991-01-021991-12-31
19921992-01-061992-12-27
19931993-01-051993-12-14
19951995-01-041995-12-27
19961996-01-031996-12-07
20002000-01-122000-12-19
20012001-01-052001-11-08
20022002-01-072002-12-27
20032003-01-022003-12-13
20042004-01-172004-12-25
20052005-01-052005-12-17
20062006-01-072006-12-16
20072007-01-012007-12-28
20082008-01-182008-12-28
20092009-01-122009-12-29
20102010-01-032010-12-26
20112011-01-032011-12-27
20122012-01-152012-12-26
20132013-01-272013-12-26
20142014-01-082014-12-26
20152015-01-052015-12-23
20162016-01-042016-12-25
20172017-01-042017-12-27
20182018-01-092018-12-21
20192019-01-012019-11-24
20202020-01-202020-12-30
20212021-01-052021-12-28
20222022-01-062022-12-23
20232023-01-052023-12-31
20242024-01-012024-12-08
20252025-01-072025-11-27
20262026-01-042026-08-10

Every Fixed Threshold

Fixed thresholds at Mount Wilson (Clarine)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4973202228
25 mm (0.98 in): Days with 25 mm or more rain4926202212
50 mm (1.97 in): Days with 50 mm or more rain49919965
100 mm (3.94 in): Days with 100 mm or more rain24319881
200 mm (7.87 in): Days with 200 mm or more rain2119781

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1970.

Download the Data

  • Data for Mount Wilson (Clarine) 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-12).