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Built 2026-10-19 (19 October 2026)

Pleasanton Threshold Days by Year (USC00417111)

17 fixed thresholds counted per year at Pleasanton (USC00417111): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pleasanton Thresholds

  • Pleasanton: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 2007 with 39.
  • Pleasanton: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1991 with 18.
  • Pleasanton: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1996 with 206.
  • Pleasanton: days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 2011 with 133.
  • 17 fixed thresholds have at least one qualifying day at Pleasanton.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Pleasanton Days per year at Pleasanton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 206 in 1996. 01002003001991: 1971992: 1781995: 2021996: 2061997: 1731998: 1832000: 1992001: 1772002: 1812003: 1892005: 1722006: 2052007: 1522008: 1822009: 1702010: 1552011: 2062012: 1952013: 1752014: 1732015: 1722016: 1752017: 1882018: 1692019: 1712020: 1902021: 1732022: 1982023: 1752026: 1321991199620002003200720102013201620192022
Days per year at Pleasanton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 206 in 1996.
Days at or above 30 C (86 F) per year at Pleasanton
YearDaysDecade average
1991197189.8
1992178189.8
1995202189.8
1996206189.8
1997173189.8
1998183189.8
2000199180.8
2001177180.8
2002181180.8
2003189180.8
2005172180.8
2006205180.8
2007152180.8
2008182180.8
2009170180.8
2010155177.9
2011206177.9
2012195177.9
2013175177.9
2014173177.9
2015172177.9
2016175177.9
2017188177.9
2018169177.9
2019171177.9
2020190173.6
2021173173.6
2022198173.6
2023175173.6
2026132173.6
First to last qualifying date each year at Pleasanton For each year, a bar from the first to the last day at Pleasanton meeting 30 C (86 F). 1991: 14 February 1991 to 29 October 19911992: 7 March 1992 to 4 November 19921995: 10 February 1995 to 5 December 19951996: 10 February 1996 to 29 December 19961997: 3 January 1997 to 31 October 19971998: 24 March 1998 to 30 November 19982000: 18 January 2000 to 2 November 20002001: 24 February 2001 to 25 November 20012002: 13 March 2002 to 12 November 20022003: 23 January 2003 to 16 November 20032005: 14 March 2005 to 28 November 20052006: 2 January 2006 to 11 November 20062007: 9 March 2007 to 22 November 20072008: 5 February 2008 to 6 November 20082009: 26 February 2009 to 30 October 20092010: 3 April 2010 to 25 November 20102011: 25 February 2011 to 21 November 20112012: 24 February 2012 to 19 December 20122013: 30 January 2013 to 5 December 20132014: 2 March 2014 to 31 October 20142015: 3 April 2015 to 12 November 20152016: 14 March 2016 to 17 November 20162017: 22 January 2017 to 19 November 20172018: 1 March 2018 to 15 October 20182019: 16 February 2019 to 15 December 20192020: 12 March 2020 to 26 November 20202021: 11 March 2021 to 11 December 20212022: 1 January 2022 to 5 November 20222023: 3 January 2023 to 9 November 20232026: 3 January 2026 to 15 October 202619911997200220072011201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Pleasanton meeting 30 C (86 F).
First to last qualifying date each year at Pleasanton
YearFirst dateLast date
19911991-02-141991-10-29
19921992-03-071992-11-04
19951995-02-101995-12-05
19961996-02-101996-12-29
19971997-01-031997-10-31
19981998-03-241998-11-30
20002000-01-182000-11-02
20012001-02-242001-11-25
20022002-03-132002-11-12
20032003-01-232003-11-16
20052005-03-142005-11-28
20062006-01-022006-11-11
20072007-03-092007-11-22
20082008-02-052008-11-06
20092009-02-262009-10-30
20102010-04-032010-11-25
20112011-02-252011-11-21
20122012-02-242012-12-19
20132013-01-302013-12-05
20142014-03-022014-10-31
20152015-04-032015-11-12
20162016-03-142016-11-17
20172017-01-222017-11-19
20182018-03-012018-10-15
20192019-02-162019-12-15
20202020-03-122020-11-26
20212021-03-112021-12-11
20222022-01-012022-11-05
20232023-01-032023-11-09
20262026-01-032026-10-15

Every Fixed Threshold

Fixed thresholds at Pleasanton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days302061996132
35 C (95 F): Days30133201168
40 C (104 F): Days263619982
45 C (113 F): Days2119981
90 F (32.2 C): Days301731996111
100 F (37.8 C): Days2975201128
110 F (43.3 C): Days3219981
0 C (32 F): Ice days (max3219972
0 C (32 F): Frost days (min293420109
-10 C (14 F): Days with min2320101
20 C (68 F): Tropical nights (min291611998118
25 C (77 F): Days with min2943199813
10 mm (0.39 in): Days with 10 mm or more rain3139200714
25 mm (0.98 in): Days with 25 mm or more rain311819915
50 mm (1.97 in): Days with 50 mm or more rain29920021
100 mm (3.94 in): Days with 100 mm or more rain6119491
200 mm (7.87 in): Days with 200 mm or more rain1119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1991.

Download the Data

  • Data for Pleasanton 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).