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Built 2026-10-19 (19 October 2026)

Stockton Dam Threshold Days by Year (USC00238082)

17 fixed thresholds counted per year at Stockton Dam (USC00238082): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Stockton Dam Thresholds

  • Stockton Dam: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1990 with 47.
  • Stockton Dam: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1998 with 18.
  • Stockton Dam: days with a maximum temperature at or above 30 C (86 F) in 49 years, most in 1980 with 114.
  • Stockton Dam: days with a maximum temperature at or above 35 C (95 F) in 49 years, most in 1980 with 64.
  • 17 fixed thresholds have at least one qualifying day at Stockton Dam.
49 years with a qualifying day
Days at or above 30 C (86 F) per year at Stockton Dam Days per year at Stockton Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 114 in 1980. 0501001501971: 741972: 751973: 751974: 571975: 861976: 711977: 831978: 981979: 711980: 1141982: 641983: 751986: 851987: 961988: 921989: 651990: 741991: 1041992: 451993: 651994: 801995: 751996: 631997: 671998: 911999: 672000: 762001: 712002: 932005: 962006: 852007: 692008: 462009: 382010: 752011: 842012: 872015: 612016: 832017: 642018: 1022019: 792020: 802021: 922022: 1032023: 1052024: 872025: 922026: 1001971197619821989199419992006201120182023
Days per year at Stockton Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 114 in 1980.
Days at or above 30 C (86 F) per year at Stockton Dam
YearDaysDecade average
19717476.7
19727576.7
19737576.7
19745776.7
19758676.7
19767176.7
19778376.7
19789876.7
19797176.7
198011484.4
19826484.4
19837584.4
19868584.4
19879684.4
19889284.4
19896584.4
19907473.1
199110473.1
19924573.1
19936573.1
19948073.1
19957573.1
19966373.1
19976773.1
19989173.1
19996773.1
20007671.8
20017171.8
20029371.8
20059671.8
20068571.8
20076971.8
20084671.8
20093871.8
20107579.4
20118479.4
20128779.4
20156179.4
20168379.4
20176479.4
201810279.4
20197979.4
20208094.1
20219294.1
202210394.1
202310594.1
20248794.1
20259294.1
202610094.1
First to last qualifying date each year at Stockton Dam For each year, a bar from the first to the last day at Stockton Dam meeting 30 C (86 F). 1971: 1 June 1971 to 1 October 19711972: 13 April 1972 to 21 September 19721973: 10 June 1973 to 4 October 19731974: 14 May 1974 to 1 September 19741975: 26 April 1975 to 13 October 19751976: 11 June 1976 to 4 October 19761977: 19 May 1977 to 28 October 19771978: 24 May 1978 to 22 October 19781979: 9 May 1979 to 12 October 19791980: 25 April 1980 to 10 October 19801982: 29 May 1982 to 15 September 19821983: 21 June 1983 to 4 October 19831986: 8 June 1986 to 29 September 19861987: 20 April 1987 to 26 September 19871988: 12 May 1988 to 23 September 19881989: 24 April 1989 to 14 October 19891990: 26 May 1990 to 28 September 19901991: 12 May 1991 to 16 September 19911992: 17 May 1992 to 19 September 19921993: 14 June 1993 to 23 September 19931994: 16 May 1994 to 2 October 19941995: 23 March 1995 to 12 October 19951996: 20 April 1996 to 12 September 19961997: 18 May 1997 to 8 October 19971998: 14 May 1998 to 30 September 19981999: 4 June 1999 to 16 October 19992000: 9 May 2000 to 4 October 20002001: 17 May 2001 to 14 September 20012002: 1 June 2002 to 4 October 20022005: 17 April 2005 to 20 October 20052006: 14 April 2006 to 10 October 20062007: 7 May 2007 to 1 October 20072008: 26 May 2008 to 20 September 20082009: 1 June 2009 to 28 September 20092010: 25 May 2010 to 22 September 20102011: 10 May 2011 to 14 September 20112012: 6 May 2012 to 26 September 20122015: 8 June 2015 to 18 September 20152016: 30 May 2016 to 19 October 20162017: 19 May 2017 to 15 October 20172018: 8 May 2018 to 4 October 20182019: 17 May 2019 to 3 October 20192020: 9 April 2020 to 15 October 20202021: 24 May 2021 to 11 October 20212022: 10 May 2022 to 6 October 20222023: 7 May 2023 to 3 October 20232024: 19 May 2024 to 29 October 20242025: 14 April 2025 to 16 October 20252026: 21 March 2026 to 14 October 20261971197819881995200220112020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Stockton Dam meeting 30 C (86 F).
First to last qualifying date each year at Stockton Dam
YearFirst dateLast date
19711971-06-011971-10-01
19721972-04-131972-09-21
19731973-06-101973-10-04
19741974-05-141974-09-01
19751975-04-261975-10-13
19761976-06-111976-10-04
19771977-05-191977-10-28
19781978-05-241978-10-22
19791979-05-091979-10-12
19801980-04-251980-10-10
19821982-05-291982-09-15
19831983-06-211983-10-04
19861986-06-081986-09-29
19871987-04-201987-09-26
19881988-05-121988-09-23
19891989-04-241989-10-14
19901990-05-261990-09-28
19911991-05-121991-09-16
19921992-05-171992-09-19
19931993-06-141993-09-23
19941994-05-161994-10-02
19951995-03-231995-10-12
19961996-04-201996-09-12
19971997-05-181997-10-08
19981998-05-141998-09-30
19991999-06-041999-10-16
20002000-05-092000-10-04
20012001-05-172001-09-14
20022002-06-012002-10-04
20052005-04-172005-10-20
20062006-04-142006-10-10
20072007-05-072007-10-01
20082008-05-262008-09-20
20092009-06-012009-09-28
20102010-05-252010-09-22
20112011-05-102011-09-14
20122012-05-062012-09-26
20152015-06-082015-09-18
20162016-05-302016-10-19
20172017-05-192017-10-15
20182018-05-082018-10-04
20192019-05-172019-10-03
20202020-04-092020-10-15
20212021-05-242021-10-11
20222022-05-102022-10-06
20232023-05-072023-10-03
20242024-05-192024-10-29
20252025-04-142025-10-16
20262026-03-212026-10-14

Every Fixed Threshold

Fixed thresholds at Stockton Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days491141980100
35 C (95 F): Days4964198032
40 C (104 F): Days131719801
90 F (32.2 C): Days4994198068
100 F (37.8 C): Days3029198017
0 C (32 F): Ice days (max494619788
0 C (32 F): Frost days (min48120197841
-10 C (14 F): Days with min4745197810
-20 C (-4 F): Days with min201319792
20 C (68 F): Tropical nights (min4886202190
25 C (77 F): Days with min4525202527
10 mm (0.39 in): Days with 10 mm or more rain5047199025
25 mm (0.98 in): Days with 25 mm or more rain5018199811
50 mm (1.97 in): Days with 50 mm or more rain47719733
100 mm (3.94 in): Days with 100 mm or more rain10319921
10 cm (3.9 in): Days with 10 cm or more snowfall21319751
25 cm (9.8 in): Days with 25 cm or more snowfall2119801

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 Stockton Dam 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).