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Fairfax, CA weather and climate

Marin County, CA · population 7,523 · about 197 ft elevation

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

The year at a glance

Sunny days
250
clear or partly cloudy, per year
Precipitation
23 in
per year
Wet days
56
rain or snow per year
Snowfall
0 in
per year
Hot days
22
above 90 °F
Freezing nights
3
at or below 32 °F
Humidity
77%
average relative
Average temperature
59 °F
year round

Monthly temperatures

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

Daily highDaily low
406080JanMarMayJulSepNovDaily high, Jan: 57 °FDaily high, Feb: 61 °FDaily high, Mar: 65 °FDaily high, Apr: 68 °FDaily high, May: 73 °FDaily high, Jun: 78 °FDaily high, Jul: 81 °FDaily high, Aug: 82 °FDaily high, Sep: 81 °FDaily high, Oct: 75 °FDaily high, Nov: 64 °FDaily high, Dec: 57 °FDaily low, Jan: 42 °FDaily low, Feb: 44 °FDaily low, Mar: 45 °FDaily low, Apr: 47 °FDaily low, May: 50 °FDaily low, Jun: 53 °FDaily low, Jul: 54 °FDaily low, Aug: 55 °FDaily low, Sep: 54 °FDaily low, Oct: 51 °FDaily low, Nov: 46 °FDaily low, Dec: 42 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high576165687378818281756457
Daily low424445475053545554514642

Monthly precipitation

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

0.02.04.0JanMarMayJulSepNovFairfax, Jan: 4.5 inFairfax, Feb: 4.7 inFairfax, Mar: 3.4 inFairfax, Apr: 1.5 inFairfax, May: 0.8 inFairfax, Jun: 0.2 inFairfax, Jul: 0.0 inFairfax, Aug: 0.0 inFairfax, Sep: 0.1 inFairfax, Oct: 1.0 inFairfax, Nov: 2.2 inFairfax, Dec: 4.4 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Fairfax4.54.73.41.50.80.20.00.00.11.02.24.4

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovFairfax, Jan: 13 daysFairfax, Feb: 13 daysFairfax, Mar: 16 daysFairfax, Apr: 20 daysFairfax, May: 23 daysFairfax, Jun: 26 daysFairfax, Jul: 28 daysFairfax, Aug: 28 daysFairfax, Sep: 27 daysFairfax, Oct: 24 daysFairfax, Nov: 18 daysFairfax, Dec: 15 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Fairfax131316202326282827241815

Compare Fairfax with another city

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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).