TODAY OCT21
TEMPERATURE
HUMIDITY
PRESSURE29.88
WIND COND.
  • 7746Sun
  • 7146Mon
  • 7447Tue
  • 7649Wed
  • 7750Thu
daynightWeather update from DW7094 Mill Valley at
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San Anselmo 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 San Anselmo for July is 65 degrees.
  • The lowest monthly average temperature in San Anselmo for December is 47 degrees.
  • The most monthly precipitation in San Anselmo occurs in January with 3.8 inches.
  • The air quality index in San Anselmo is 13% better than the national average.
  • The pollution index in San Anselmo is 62% worse than the national average.

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Compare San Anselmo, CA Weather To Other Cities

San Anselmo 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.
IndexSan AnselmoCaliforniaNational
Air quality index435550
Pollution index8,232,36018,106,7265,066,862

San Anselmo 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

San Anselmo air quality information

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

Average monthly San Anselmo temperature with heat index

San Anselmo monthly precipitation with daily maximum

San Anselmo monthly snow depth with daily maximum

San Anselmo monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Point Reyes Station, CA5743530%
Albany, CA19,4204314%
Black Point-Green Point, CA1,5924314%
El Cerrito, CA24,6464314%
Kentfield, CA6,9074314%
San Anselmo, CA12,6234314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Dallas, GA12,622524%
Georgetown, GA12,6214020%
Markham, IL12,6336020%
Boone, IA12,6093726%
Lincolnwood, IL12,6376020%
San Anselmo, CA12,6234314%
Source: The San Anselmo, 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.