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Data as of 2026-10-15
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Built 2026-10-17 (17 October 2026)

Alder Point California Threshold Days by Year

10 fixed thresholds counted per year at Alder Point California (USR0000CAPT): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alder Point California Thresholds

  • Alder Point California: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 2021 with 90.
  • Alder Point California: days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 2021 with 39.
  • Alder Point California: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 2017 with 60.
  • Alder Point California: days with a maximum temperature at or above 100 F (37.8 C) in 30 years, most in 1996 with 22.
  • 10 fixed thresholds have at least one qualifying day at Alder Point California.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Alder Point California Days per year at Alder Point California with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 2021. 02550751001992: 721994: 611996: 681998: 662000: 702001: 772002: 792003: 752004: 812005: 712006: 702007: 442008: 702009: 792010: 632011: 482012: 682013: 732015: 892016: 812017: 772018: 732019: 652020: 772021: 902022: 732023: 702024: 892025: 782026: 761992199820022005200820112015201820212024
Days per year at Alder Point California with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 2021.
Days at or above 30 C (86 F) per year at Alder Point California
YearDaysDecade average
19927266.8
19946166.8
19966866.8
19986666.8
20007071.6
20017771.6
20027971.6
20037571.6
20048171.6
20057171.6
20067071.6
20074471.6
20087071.6
20097971.6
20106370.8
20114870.8
20126870.8
20137370.8
20158970.8
20168170.8
20177770.8
20187370.8
20196570.8
20207779
20219079
20227379
20237079
20248979
20257879
20267679
First to last qualifying date each year at Alder Point California For each year, a bar from the first to the last day at Alder Point California meeting 30 C (86 F). 1992: 16 May 1992 to 12 October 19921994: 15 April 1994 to 9 October 19941996: 11 May 1996 to 9 October 19961998: 27 April 1998 to 6 October 19982000: 31 March 2000 to 7 October 20002001: 7 May 2001 to 15 October 20012002: 2 April 2002 to 9 October 20022003: 23 May 2003 to 28 October 20032004: 20 March 2004 to 15 October 20042005: 25 May 2005 to 30 September 20052006: 10 May 2006 to 9 October 20062007: 7 May 2007 to 26 September 20072008: 11 April 2008 to 30 September 20082009: 19 April 2009 to 27 September 20092010: 12 June 2010 to 14 October 20102011: 4 May 2011 to 29 September 20112012: 21 April 2012 to 18 October 20122013: 1 May 2013 to 19 September 20132015: 19 April 2015 to 15 October 20152016: 6 April 2016 to 28 September 20162017: 3 May 2017 to 9 October 20172018: 23 April 2018 to 27 September 20182019: 18 April 2019 to 26 September 20192020: 7 May 2020 to 17 October 20202021: 5 May 2021 to 4 October 20212022: 7 April 2022 to 15 October 20222023: 26 April 2023 to 8 October 20232024: 22 April 2024 to 7 October 20242025: 25 March 2025 to 27 September 20252026: 11 May 2026 to 8 October 202619922000200420082012201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alder Point California meeting 30 C (86 F).
First to last qualifying date each year at Alder Point California
YearFirst dateLast date
19921992-05-161992-10-12
19941994-04-151994-10-09
19961996-05-111996-10-09
19981998-04-271998-10-06
20002000-03-312000-10-07
20012001-05-072001-10-15
20022002-04-022002-10-09
20032003-05-232003-10-28
20042004-03-202004-10-15
20052005-05-252005-09-30
20062006-05-102006-10-09
20072007-05-072007-09-26
20082008-04-112008-09-30
20092009-04-192009-09-27
20102010-06-122010-10-14
20112011-05-042011-09-29
20122012-04-212012-10-18
20132013-05-012013-09-19
20152015-04-192015-10-15
20162016-04-062016-09-28
20172017-05-032017-10-09
20182018-04-232018-09-27
20192019-04-182019-09-26
20202020-05-072020-10-17
20212021-05-052021-10-04
20222022-04-072022-10-15
20232023-04-262023-10-08
20242024-04-222024-10-07
20252025-03-252025-09-27
20262026-05-112026-10-08

Every Fixed Threshold

Fixed thresholds at Alder Point California
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3090202176
35 C (95 F): Days3039202131
40 C (104 F): Days281120032
45 C (113 F): Days1120241
90 F (32.2 C): Days3060201755
100 F (37.8 C): Days3022199610
110 F (43.3 C): Days9519982
0 C (32 F): Ice days (max1120131
0 C (32 F): Frost days (min304720077
20 C (68 F): Tropical nights (min5319941

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.

Download the Data

  • Data for Alder Point California 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-15).