TODAY MAR08
TEMPERATURE50
HUMIDITY68
PRESSURE30.03
WIND COND.220 9.4
  • 5739Mon20%40%
  • 5539Tue80%80%
  • 5635Wed60%20%
  • 6336Thu
  • 6636Fri
daynightWeather update from Napa, Napa County Airport at

Key findings

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

Compare Sonoma, CA Weather

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      Sonoma 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"

      Sonoma 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.
      IndexSonomaCaliforniaNational
      Air quality index355550
      Pollution index7,898,29018,106,7265,066,862

      Sonoma air quality information

      MeasurementTotal
      Days measured363
      Days with good air quality330
      Days with moderate air quality31
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Sonoma air quality information

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

      Average monthly Sonoma temperature with heat index

      Sonoma monthly precipitation with daily maximum

      Sonoma monthly snow depth with daily maximum

      Sonoma monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Roseland, CA5,8593432%
      Penngrove, CA2,9403432%
      Cotati, CA7,4153432%
      Glen Ellen, CA7263432%
      Petaluma, CA59,7573432%
      Sonoma, CA10,9523530%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      South Yarmouth, MA10,9533628%
      Lighthouse Point, FL10,9464118%
      White House, TN10,9444510%
      Dent, OH10,963548%
      Fairfield, AL10,937536%
      Sonoma, CA10,9523530%
      Source: The Sonoma, 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.