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San Jacinto, CA weather and climate

Riverside County, CA · population 54,756 · about 1,490 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at San Jacinto's own coordinates.

The year at a glance

Sunny days
284
clear or partly cloudy, per year
Precipitation
15 in
per year
Wet days
43
rain or snow per year
Snowfall
9 in
per year
Hot days
120
above 90 °F
Freezing nights
15
at or below 32 °F
Humidity
56%
average relative
Average temperature
65 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
406080100JanMarMayJulSepNovDaily high, Jan: 66 °FDaily high, Feb: 66 °FDaily high, Mar: 70 °FDaily high, Apr: 74 °FDaily high, May: 80 °FDaily high, Jun: 89 °FDaily high, Jul: 95 °FDaily high, Aug: 96 °FDaily high, Sep: 92 °FDaily high, Oct: 82 °FDaily high, Nov: 73 °FDaily high, Dec: 65 °FDaily low, Jan: 40 °FDaily low, Feb: 42 °FDaily low, Mar: 45 °FDaily low, Apr: 48 °FDaily low, May: 53 °FDaily low, Jun: 58 °FDaily low, Jul: 64 °FDaily low, Aug: 64 °FDaily low, Sep: 61 °FDaily low, Oct: 53 °FDaily low, Nov: 44 °FDaily low, Dec: 39 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high666670748089959692827365
Daily low404245485358646461534439

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.01.02.03.0JanMarMayJulSepNovSan Jacinto, Jan: 2.9 inSan Jacinto, Feb: 3.5 inSan Jacinto, Mar: 2.2 inSan Jacinto, Apr: 1.1 inSan Jacinto, May: 0.5 inSan Jacinto, Jun: 0.1 inSan Jacinto, Jul: 0.2 inSan Jacinto, Aug: 0.1 inSan Jacinto, Sep: 0.2 inSan Jacinto, Oct: 0.7 inSan Jacinto, Nov: 1.1 inSan Jacinto, Dec: 2.3 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Jacinto2.93.52.21.10.50.10.20.10.20.71.12.3

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovSan Jacinto, Jan: 19 daysSan Jacinto, Feb: 17 daysSan Jacinto, Mar: 19 daysSan Jacinto, Apr: 21 daysSan Jacinto, May: 24 daysSan Jacinto, Jun: 27 daysSan Jacinto, Jul: 28 daysSan Jacinto, Aug: 30 daysSan Jacinto, Sep: 28 daysSan Jacinto, Oct: 26 daysSan Jacinto, Nov: 23 daysSan Jacinto, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Jacinto191719212427283028262321

Compare San Jacinto with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered California city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).

Citing this page

Writing about San Jacinto's climate in a report or paper? Cite this page directly. The reference period is part of the citation, so it stays accurate even as individual numbers are refined; add an access date in whatever citation style you use.

VSWeather. San Jacinto, CA weather and climate: 1991-2020 climate normals. https://vsweather.com/weather/san-jacinto-ca/. Computed from Open-Meteo historical reanalysis, station-calibrated against NOAA NCEI climate normals.

BibTeX entry
@misc{vsweather_san_jacinto_ca,
  author = {{VSWeather}},
  title = {San Jacinto, CA weather and climate: 1991-2020 climate normals},
  howpublished = {\url{https://vsweather.com/weather/san-jacinto-ca/}},
  note = {Computed from Open-Meteo historical reanalysis, station-calibrated against NOAA NCEI climate normals}
}

How to cite VSWeather explains the sources and verification behind these numbers.