TODAY MAY26
TEMPERATURE91
HUMIDITY30
PRESSURE
WIND COND.109 1
  • 8653Wed
  • 8053Thu
  • 7355Fri
  • 7052Sat
  • 7051Sun
daynightWeather update from DW7094 Mill Valley at
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Fairfax Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January36°F58°F47°F3.8"
February39°F62°F50°F3.4"
March41°F66°F52°F3.0"
April42°F69°F55°F1.6"
May46°F74°F59°F0.5"
June50°F80°F64°F0.3"
July53°F81°F65°F0.0"
August53°F80°F64°F0.0"
September49°F82°F64°F0.1"
October45°F76°F59°F1.3"
November40°F66°F52°F1.8"
December36°F58°F47°F3.8"

Did you know?

  • The highest monthly average temperature in Fairfax for July is 65 degrees.
  • The lowest monthly average temperature in Fairfax for December is 47 degrees.
  • The most monthly precipitation in Fairfax occurs in January with 3.8 inches.
  • The air quality index in Fairfax is 14% better than the national average.
  • The pollution index in Fairfax is 62% worse than the national average.

Compare Fairfax, CA Weather To Other Cities

      vs

      Fairfax air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexFairfaxCaliforniaNational
      Air quality index435550
      Pollution index8,232,36018,106,7265,066,862

      Fairfax air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality241
      Days with moderate air quality115
      Days w/ poor A.Q. for sensitive groups9
      Days with unhealthy air quality

      Fairfax air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.060%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.010%

      Average monthly Fairfax temperature with heat index

      Fairfax monthly precipitation with daily maximum

      Fairfax monthly snow depth with daily maximum

      Fairfax monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Point Reyes Station, CA5743530%
      Lagunitas-Forest Knolls, CA1,5304314%
      Mill Valley, CA14,3184314%
      North Richmond, CA4,0394314%
      Rollingwood, CA3,2314314%
      Fairfax, CA7,5984314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Yreka, CA7,598468%
      Selah, WA7,5994020%
      Rockton, IL7,5963138%
      Sanger, TX7,595548%
      Holly Springs, MS7,5914412%
      Fairfax, CA7,5984314%
      Source: The Fairfax, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.