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Guerneville Average Weather

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°F60°F46°F6.0"
February39°F64°F50°F5.7"
March41°F67°F52°F4.6"
April43°F71°F55°F2.4"
May46°F77°F60°F1.1"
June50°F83°F64°F0.4"
July52°F85°F65°F0.0"
August52°F84°F64°F0.0"
September49°F85°F64°F0.2"
October46°F78°F59°F2.0"
November41°F67°F52°F3.2"
December36°F59°F46°F6.9"

Did you know?

  • The highest monthly average temperature in Guerneville for July is 65 degrees.
  • The lowest monthly average temperature in Guerneville for December is 46 degrees.
  • The most monthly precipitation in Guerneville occurs in December with 6.9 inches.
  • The air quality index in Guerneville is 29% better than the national average.
  • The pollution index in Guerneville is 92% better than the national average.

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Compare Guerneville, CA Weather To Other Cities

Guerneville 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.
IndexGuernevilleCaliforniaNational
Air quality index355550
Pollution index360,23818,106,7265,066,862

Guerneville 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

Guerneville air quality information

PollutantTotal
Arsenic0.002%
Benzene0.004%
Carbon Tetrachloride0.000%
Lead0.002%
Mercury0.000%

Average monthly Guerneville temperature with heat index

Guerneville monthly precipitation with daily maximum

Guerneville monthly snow depth with daily maximum

Guerneville monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bodega, CA2743530%
Forestville, CA3,5143530%
Healdsburg, CA11,6143530%
Occidental, CA8983530%
Sereno del Mar, CA613530%
Guerneville, CA4,0953530%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Fordyce, AR4,0963138%
Williamston, SC4,0933138%
Ellenville, NY4,0973628%
Grayson, KY4,0933824%
Mullica Hill, NJ4,0925714%
Guerneville, CA4,0953530%
Source: The Guerneville, 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.