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Key findings

  • The highest monthly average temperature in Kelseyville for July is 74 degrees
  • The lowest monthly average temperature in Kelseyville for December is 44 degrees
  • The most monthly precipitation in Kelseyville occurs in December with 7.1 inches
  • The air quality index in Kelseyville is 38% better than the national average
  • The pollution index in Kelseyville is 93% better than the national average

Compare Kelseyville, CA Weather

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      Kelseyville 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
      January35°F60°F45°F6.2"
      February38°F63°F48°F5.5"
      March40°F66°F51°F5.5"
      April42°F71°F55°F2.8"
      May47°F80°F62°F0.9"
      June52°F87°F68°F0.4"
      July56°F96°F74°F0.0"
      August54°F95°F72°F0.0"
      September50°F90°F68°F0.2"
      October45°F79°F59°F2.1"
      November40°F65°F51°F3.8"
      December35°F57°F44°F7.1"

      Kelseyville 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.
      IndexKelseyvilleCaliforniaNational
      Air quality index315550
      Pollution index360,23818,106,7265,066,862

      Kelseyville air quality information

      MeasurementTotal
      Days measured360
      Days with good air quality360
      Days with moderate air quality0
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Kelseyville air quality information

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

      Average monthly Kelseyville temperature with heat index

      Kelseyville monthly precipitation with daily maximum

      Kelseyville monthly snow depth with daily maximum

      Kelseyville monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Cobb, CA1,1223138%
      Soda Bay, CA1,4953138%
      Lucerne, CA3,1633138%
      Clearlake, CA15,0703138%
      Nice, CA2,2603138%
      Kelseyville, CA3,8223138%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Hannahs Mill, GA3,8223824%
      Indian Head Park, IL3,8235510%
      Brownsville, LA3,8203432%
      Thorndale, PA3,8244216%
      Arcadia, SC3,8204412%
      Kelseyville, CA3,8223138%
      Source: The Kelseyville, 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.