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

Oakland South California Threshold Days by Year (USR0000COKS)

9 fixed thresholds counted per year at Oakland South California (USR0000COKS): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oakland South California Thresholds

  • Oakland South California: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 2024 with 42.
  • Oakland South California: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 2024 with 30.
  • Oakland South California: days with a maximum temperature at or above 35 C (95 F) in 27 years, most in 2024 with 13.
  • Oakland South California: nights with a minimum temperature at or above 20 C (68 F) in 26 years, most in 2017 with 12.
  • 9 fixed thresholds have at least one qualifying day at Oakland South California.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Oakland South California Days per year at Oakland South California with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 2024. 02040601993: 191994: 111995: 181996: 311997: 141998: 221999: 202000: 222001: 252002: 302003: 292004: 242007: 252010: 202011: 182012: 152013: 142014: 172015: 242016: 182017: 302018: 112019: 202020: 392021: 232022: 232023: 242024: 422025: 202026: 291993199619992002200720122015201820212024
Days per year at Oakland South California with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 2024.
Days at or above 30 C (86 F) per year at Oakland South California
YearDaysDecade average
19931919.3
19941119.3
19951819.3
19963119.3
19971419.3
19982219.3
19992019.3
20002225.8
20012525.8
20023025.8
20032925.8
20042425.8
20072525.8
20102018.7
20111818.7
20121518.7
20131418.7
20141718.7
20152418.7
20161818.7
20173018.7
20181118.7
20192018.7
20203928.6
20212328.6
20222328.6
20232428.6
20244228.6
20252028.6
20262928.6
First to last qualifying date each year at Oakland South California For each year, a bar from the first to the last day at Oakland South California meeting 30 C (86 F). 1993: 9 May 1993 to 27 September 19931994: 9 June 1994 to 16 September 19941995: 23 June 1995 to 14 October 19951996: 29 April 1996 to 8 October 19961997: 16 May 1997 to 16 October 19971998: 15 June 1998 to 13 September 19981999: 28 June 1999 to 10 October 19992000: 20 May 2000 to 30 September 20002001: 7 May 2001 to 15 October 20012002: 5 June 2002 to 8 October 20022003: 27 May 2003 to 28 October 20032004: 17 March 2004 to 14 October 20042007: 27 April 2007 to 26 September 20072010: 12 June 2010 to 14 October 20102011: 20 June 2011 to 28 September 20112012: 10 June 2012 to 18 October 20122013: 2 May 2013 to 8 September 20132014: 13 May 2014 to 12 October 20142015: 8 June 2015 to 13 October 20152016: 3 June 2016 to 8 October 20162017: 1 May 2017 to 27 October 20172018: 2 June 2018 to 26 September 20182019: 9 June 2019 to 25 October 20192020: 8 May 2020 to 21 October 20202021: 8 May 2021 to 3 October 20212022: 7 April 2022 to 24 September 20222023: 13 May 2023 to 19 October 20232024: 4 June 2024 to 7 October 20242025: 9 May 2025 to 7 October 20252026: 18 March 2026 to 8 October 202619931997200120072013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Oakland South California meeting 30 C (86 F).
First to last qualifying date each year at Oakland South California
YearFirst dateLast date
19931993-05-091993-09-27
19941994-06-091994-09-16
19951995-06-231995-10-14
19961996-04-291996-10-08
19971997-05-161997-10-16
19981998-06-151998-09-13
19991999-06-281999-10-10
20002000-05-202000-09-30
20012001-05-072001-10-15
20022002-06-052002-10-08
20032003-05-272003-10-28
20042004-03-172004-10-14
20072007-04-272007-09-26
20102010-06-122010-10-14
20112011-06-202011-09-28
20122012-06-102012-10-18
20132013-05-022013-09-08
20142014-05-132014-10-12
20152015-06-082015-10-13
20162016-06-032016-10-08
20172017-05-012017-10-27
20182018-06-022018-09-26
20192019-06-092019-10-25
20202020-05-082020-10-21
20212021-05-082021-10-03
20222022-04-072022-09-24
20232023-05-132023-10-19
20242024-06-042024-10-07
20252025-05-092025-10-07
20262026-03-182026-10-08

Every Fixed Threshold

Fixed thresholds at Oakland South California
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3042202429
35 C (95 F): Days271320244
40 C (104 F): Days4220172
90 F (32.2 C): Days3030202414
100 F (37.8 C): Days12520201
110 F (43.3 C): Days1120171
0 C (32 F): Frost days (min10519981
20 C (68 F): Tropical nights (min261220177
25 C (77 F): Days with min2320243

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1993.

Download the Data

  • Data for Oakland South 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).