TODAY DEC13
TEMPERATURE60
HUMIDITY93
PRESSURE30.27
WIND COND.200 6.9
  • 5942Fri30%40%
  • 5735Sat20%
  • 5632Sun
  • 5634Mon
  • 5538Tue
daynightWeather update from Napa, Napa County Airport at
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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"

Did you know?

  • 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 14% better than the national average.
  • The pollution index in Sonoma is 56% worse than the national average.

Compare Sonoma, CA Weather To Other Cities

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 index435550
Pollution index7,898,29018,106,7265,066,862

Sonoma air quality information

MeasurementTotal
Days measured365
Days with good air quality220
Days with moderate air quality143
Days w/ poor A.Q. for sensitive groups2
Days with unhealthy air quality

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.
Kenwood, CA1,2273530%
Roseland, CA5,8593530%
Penngrove, CA2,9403530%
Petaluma, CA59,7573530%
St. Helena, CA5,9953530%
Sonoma, CA10,9524314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
South Yarmouth, MA10,9533334%
Lighthouse Point, FL10,9464118%
White House, TN10,9444510%
Dent, OH10,963548%
Malvern, AR10,9373628%
Sonoma, CA10,9524314%
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.
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