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

San Ramon Threshold Days by Year (BLM00085109)

7 fixed thresholds counted per year at San Ramon (BLM00085109): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for San Ramon Thresholds

  • San Ramon: days with a maximum temperature at or above 30 C (86 F) in 1 years, most in 2017 with 281.
  • San Ramon: days with a maximum temperature at or above 35 C (95 F) in 1 years, most in 2017 with 74.
  • San Ramon: days with a maximum temperature at or above 90 F (32.2 C) in 1 years, most in 2017 with 216.
  • San Ramon: days with a maximum temperature at or above 100 F (37.8 C) in 1 years, most in 2017 with 3.
  • 7 fixed thresholds have at least one qualifying day at San Ramon.
1 years with a qualifying day
Days at or above 30 C (86 F) per year at San Ramon Days per year at San Ramon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 281 in 2017. 01002003002017: 2812017
Days per year at San Ramon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 281 in 2017.
Days at or above 30 C (86 F) per year at San Ramon
YearDaysDecade average
2017281281
First to last qualifying date each year at San Ramon For each year, a bar from the first to the last day at San Ramon meeting 30 C (86 F). 2017: 5 January 2017 to 30 December 20172017JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at San Ramon meeting 30 C (86 F).
First to last qualifying date each year at San Ramon
YearFirst dateLast date
20172017-01-052017-12-30

Every Fixed Threshold

Fixed thresholds at San Ramon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days12812017281
35 C (95 F): Days174201774
90 F (32.2 C): Days12162017216
100 F (37.8 C): Days1320173
10 mm (0.39 in): Days with 10 mm or more rain1420264
25 mm (0.98 in): Days with 25 mm or more rain1220262
50 mm (1.97 in): Days with 50 mm or more rain1120261

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2017.

Download the Data

  • Data for San Ramon 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).