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San Bernardino, CA weather and climate

San Bernardino County, CA · population 221,774 · about 1,201 ft elevation

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

The year at a glance

Sunny days
296
clear or partly cloudy, per year
Precipitation
12 in
per year
Wet days
42
rain or snow per year
Snowfall
14 in
per year
Hot days
106
above 90 °F
Freezing nights
3
at or below 32 °F
Humidity
55%
average relative
Average temperature
66 °F
year round

Monthly temperatures

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

Daily highDaily low
406080100JanMarMayJulSepNovDaily high, Jan: 68 °FDaily high, Feb: 69 °FDaily high, Mar: 72 °FDaily high, Apr: 76 °FDaily high, May: 81 °FDaily high, Jun: 88 °FDaily high, Jul: 95 °FDaily high, Aug: 96 °FDaily high, Sep: 93 °FDaily high, Oct: 83 °FDaily high, Nov: 76 °FDaily high, Dec: 68 °FDaily low, Jan: 42 °FDaily low, Feb: 43 °FDaily low, Mar: 46 °FDaily low, Apr: 49 °FDaily low, May: 54 °FDaily low, Jun: 58 °FDaily low, Jul: 63 °FDaily low, Aug: 64 °FDaily low, Sep: 60 °FDaily low, Oct: 54 °FDaily low, Nov: 46 °FDaily low, Dec: 41 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high686972768188959693837668
Daily low424346495458636460544641

Monthly precipitation

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

0.01.02.0JanMarMayJulSepNovSan Bernardino, Jan: 2.2 inSan Bernardino, Feb: 2.7 inSan Bernardino, Mar: 1.6 inSan Bernardino, Apr: 0.8 inSan Bernardino, May: 0.3 inSan Bernardino, Jun: 0.1 inSan Bernardino, Jul: 0.5 inSan Bernardino, Aug: 0.4 inSan Bernardino, Sep: 0.3 inSan Bernardino, Oct: 0.5 inSan Bernardino, Nov: 0.7 inSan Bernardino, Dec: 1.7 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Bernardino2.22.71.60.80.30.10.50.40.30.50.71.7

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovSan Bernardino, Jan: 20 daysSan Bernardino, Feb: 17 daysSan Bernardino, Mar: 21 daysSan Bernardino, Apr: 24 daysSan Bernardino, May: 26 daysSan Bernardino, Jun: 28 daysSan Bernardino, Jul: 29 daysSan Bernardino, Aug: 30 daysSan Bernardino, Sep: 29 daysSan Bernardino, Oct: 28 daysSan Bernardino, Nov: 24 daysSan Bernardino, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Bernardino201721242628293029282421

Compare San Bernardino 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).