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

San Joaquin Threshold Days by Year (BLM00085104)

6 fixed thresholds counted per year at San Joaquin (BLM00085104): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Joaquin Thresholds

  • San Joaquin: days with a maximum temperature at or above 30 C (86 F) in 6 years, most in 2010 with 293.
  • San Joaquin: days with a maximum temperature at or above 35 C (95 F) in 6 years, most in 2010 with 108.
  • San Joaquin: days with a maximum temperature at or above 90 F (32.2 C) in 6 years, most in 2017 with 247.
  • San Joaquin: days with a maximum temperature at or above 100 F (37.8 C) in 6 years, most in 2009 with 13.
  • 6 fixed thresholds have at least one qualifying day at San Joaquin.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at San Joaquin Days per year at San Joaquin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 293 in 2010. 01002003002009: 2872010: 2932012: 2862016: 2792017: 2912018: 270200920102012201620172018
Days per year at San Joaquin with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 293 in 2010.
Days at or above 30 C (86 F) per year at San Joaquin
YearDaysDecade average
2009287287
2010293283.8
2012286283.8
2016279283.8
2017291283.8
2018270283.8
First to last qualifying date each year at San Joaquin For each year, a bar from the first to the last day at San Joaquin meeting 30 C (86 F). 2009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 29 December 20102012: 3 January 2012 to 30 December 20122016: 1 January 2016 to 30 December 20162017: 5 January 2017 to 30 December 20172018: 1 January 2018 to 31 December 2018200920102012201620172018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Joaquin meeting 30 C (86 F).
First to last qualifying date each year at San Joaquin
YearFirst dateLast date
20092009-01-012009-12-31
20102010-01-012010-12-29
20122012-01-032012-12-30
20162016-01-012016-12-30
20172017-01-052017-12-30
20182018-01-012018-12-31

Every Fixed Threshold

Fixed thresholds at San Joaquin
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days62932010270
35 C (95 F): Days6108201044
40 C (104 F): Days1120091
90 F (32.2 C): Days62472017192
100 F (37.8 C): Days61320095
20 C (68 F): Tropical nights (min32522009260

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2009.

Download the Data

  • Data for San Joaquin 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).