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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Calistoga Threshold Days by Year

15 fixed thresholds counted per year at Calistoga (USC00041312): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Calistoga Thresholds

  • Calistoga: days with 10 mm (0.39 in) or more of precipitation in 79 years, most in 1983 with 55.
  • Calistoga: days with 25 mm (0.98 in) or more of precipitation in 78 years, most in 1983 with 32.
  • Calistoga: days with 50 mm (1.97 in) or more of precipitation in 66 years, most in 1962 with 10.
  • Calistoga: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 2013 with 78.
  • 15 fixed thresholds have at least one qualifying day at Calistoga.
27 years with a qualifying day
Days at or above 30 C (86 F) per year at Calistoga Days per year at Calistoga with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 132 in 2008. 0501001501917: 711982: 781983: 951984: 1151990: 1151991: 1101992: 1211996: 1091997: 972004: 1002005: 832006: 1022007: 992008: 1322011: 922012: 1162013: 1132014: 802015: 872016: 772019: 912020: 1232022: 1082023: 792024: 1142025: 862026: 98191719841992200420072012201520202024
Days per year at Calistoga with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 132 in 2008.
Days at or above 30 C (86 F) per year at Calistoga
YearDaysDecade average
19177171
19827896
19839596
198411596
1990115110.4
1991110110.4
1992121110.4
1996109110.4
199797110.4
2004100103.2
200583103.2
2006102103.2
200799103.2
2008132103.2
20119293.7
201211693.7
201311393.7
20148093.7
20158793.7
20167793.7
20199193.7
2020123101.3
2022108101.3
202379101.3
2024114101.3
202586101.3
202698101.3
First to last qualifying date each year at Calistoga For each year, a bar from the first to the last day at Calistoga meeting 30 C (86 F). 1917: 20 March 1917 to 26 October 19171982: 4 May 1982 to 13 October 19821983: 17 May 1983 to 27 October 19831984: 14 April 1984 to 24 October 19841990: 13 April 1990 to 27 October 19901991: 29 April 1991 to 21 October 19911992: 1 April 1992 to 13 October 19921996: 12 February 1996 to 11 October 19961997: 25 March 1997 to 5 November 19972004: 16 March 2004 to 15 October 20042005: 11 March 2005 to 18 October 20052006: 27 April 2006 to 24 October 20062007: 11 March 2007 to 23 October 20072008: 12 April 2008 to 16 November 20082011: 4 May 2011 to 24 October 20112012: 20 April 2012 to 7 November 20122013: 22 April 2013 to 23 October 20132014: 29 April 2014 to 14 October 20142015: 27 April 2015 to 30 October 20152016: 6 April 2016 to 20 October 20162019: 23 April 2019 to 26 October 20192020: 24 April 2020 to 5 November 20202022: 11 February 2022 to 21 October 20222023: 26 April 2023 to 20 October 20232024: 23 April 2024 to 20 October 20242025: 25 March 2025 to 22 October 20252026: 16 March 2026 to 3 October 20261917199019972007201320192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Calistoga meeting 30 C (86 F).
First to last qualifying date each year at Calistoga
YearFirst dateLast date
19171917-03-201917-10-26
19821982-05-041982-10-13
19831983-05-171983-10-27
19841984-04-141984-10-24
19901990-04-131990-10-27
19911991-04-291991-10-21
19921992-04-011992-10-13
19961996-02-121996-10-11
19971997-03-251997-11-05
20042004-03-162004-10-15
20052005-03-112005-10-18
20062006-04-272006-10-24
20072007-03-112007-10-23
20082008-04-122008-11-16
20112011-05-042011-10-24
20122012-04-202012-11-07
20132013-04-222013-10-23
20142014-04-292014-10-14
20152015-04-272015-10-30
20162016-04-062016-10-20
20192019-04-232019-10-26
20202020-04-242020-11-05
20222022-02-112022-10-21
20232023-04-262023-10-20
20242024-04-232024-10-20
20252025-03-252025-10-22
20262026-03-162026-10-03

Every Fixed Threshold

Fixed thresholds at Calistoga
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days27132200898
35 C (95 F): Days2752198432
40 C (104 F): Days201019843
45 C (113 F): Days1120221
90 F (32.2 C): Days2789199071
100 F (37.8 C): Days2624198410
110 F (43.3 C): Days3320223
0 C (32 F): Frost days (min327820139
-10 C (14 F): Days with min1119901
20 C (68 F): Tropical nights (min12320042
10 mm (0.39 in): Days with 10 mm or more rain795519836
25 mm (0.98 in): Days with 25 mm or more rain783219832
50 mm (1.97 in): Days with 50 mm or more rain661019622
100 mm (3.94 in): Days with 100 mm or more rain25219621
200 mm (7.87 in): Days with 200 mm or more rain2119131

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Calistoga 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 (2026-10-17).