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San Francisco, CA weather and climate

San Francisco County, CA · population 836,321 · about 75 ft elevation

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

The year at a glance

Sunny days
248
clear or partly cloudy, per year
Precipitation
23 in
per year
Wet days
71
rain or snow per year
Snowfall
0 in
per year
Hot days
3
above 90 °F
Freezing nights
0
at or below 32 °F
Humidity
77%
average relative
Average temperature
58 °F
year round

Monthly temperatures

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

Daily highDaily low
506070JanMarMayJulSepNovDaily high, Jan: 58 °FDaily high, Feb: 60 °FDaily high, Mar: 62 °FDaily high, Apr: 63 °FDaily high, May: 64 °FDaily high, Jun: 66 °FDaily high, Jul: 66 °FDaily high, Aug: 68 °FDaily high, Sep: 70 °FDaily high, Oct: 70 °FDaily high, Nov: 64 °FDaily high, Dec: 58 °FDaily low, Jan: 47 °FDaily low, Feb: 48 °FDaily low, Mar: 49 °FDaily low, Apr: 50 °FDaily low, May: 51 °FDaily low, Jun: 53 °FDaily low, Jul: 55 °FDaily low, Aug: 56 °FDaily low, Sep: 56 °FDaily low, Oct: 54 °FDaily low, Nov: 51 °FDaily low, Dec: 47 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high586062636466666870706458
Daily low474849505153555656545147

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovSan Francisco, Jan: 4.5 inSan Francisco, Feb: 4.7 inSan Francisco, Mar: 3.5 inSan Francisco, Apr: 1.6 inSan Francisco, May: 0.8 inSan Francisco, Jun: 0.2 inSan Francisco, Jul: 0.0 inSan Francisco, Aug: 0.0 inSan Francisco, Sep: 0.1 inSan Francisco, Oct: 1.0 inSan Francisco, Nov: 2.2 inSan Francisco, Dec: 4.2 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Francisco4.54.73.51.60.80.20.00.00.11.02.24.2

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovSan Francisco, Jan: 14 daysSan Francisco, Feb: 13 daysSan Francisco, Mar: 16 daysSan Francisco, Apr: 19 daysSan Francisco, May: 22 daysSan Francisco, Jun: 25 daysSan Francisco, Jul: 28 daysSan Francisco, Aug: 27 daysSan Francisco, Sep: 27 daysSan Francisco, Oct: 24 daysSan Francisco, Nov: 18 daysSan Francisco, Dec: 15 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
San Francisco141316192225282727241815

Compare San Francisco 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).