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Petaluma 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 Petaluma for July is 65 degrees.
  • The lowest monthly average temperature in Petaluma for December is 47 degrees.
  • The most monthly precipitation in Petaluma occurs in January with 3.8 inches.
  • The air quality index in Petaluma is 30% better than the national average.
  • The pollution index in Petaluma is 56% worse than the national average.

Compare Petaluma, CA Weather To Other Cities

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      Petaluma 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.
      IndexPetalumaCaliforniaNational
      Air quality index355550
      Pollution index7,898,29018,106,7265,066,862

      Petaluma air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality296
      Days with moderate air quality69
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Petaluma air quality information

      PollutantTotal
      Arsenic0.260%
      Benzene0.080%
      Carbon Tetrachloride0.005%
      Lead0.240%
      Mercury0.270%

      Average monthly Petaluma temperature with heat index

      Petaluma monthly precipitation with daily maximum

      Petaluma monthly snow depth with daily maximum

      Petaluma monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Kenwood, CA1,2273530%
      Roseland, CA5,8593530%
      Cotati, CA7,4153530%
      Glen Ellen, CA7263530%
      Penngrove, CA2,9403530%
      Petaluma, CA59,7573530%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Springfield, OH59,7614216%
      Lakeville, MN59,7864412%
      Marietta, GA59,714524%
      Gardena, CA59,8987448%
      St. Clair Shores, MI59,916524%
      Petaluma, CA59,7573530%
      Source: The Petaluma, 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.