TODAY MAY15
TEMPERATURE46
HUMIDITY93
PRESSURE29.84
WIND COND.170 5.4
  • 7248Sat
  • 7147Sun
  • 7148Mon
  • 7548Tue
  • 6643Wed
daynightWeather update from Santa Rosa, Santa Rosa Sonoma County Airport at

Key findings

  • The highest monthly average temperature in Angwin for July is 64.9 degrees
  • The lowest monthly average temperature in Angwin for December is 46.1 degrees
  • The most monthly precipitation in Angwin occurs in December with 6.9 inches
  • The air quality index in Angwin is 32% better than the national average
  • The pollution index in Angwin is 93% better than the national average

Compare Angwin, CA Weather

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      Angwin 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°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"

      Angwin 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.
      IndexAngwinCaliforniaNational
      Air quality index345550
      Pollution index360,23818,106,7265,066,862

      Angwin air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality346
      Days with moderate air quality18
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality1

      Angwin air quality information

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

      Average monthly Angwin temperature with heat index

      Angwin monthly precipitation with daily maximum

      Angwin monthly snow depth with daily maximum

      Angwin monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Middletown, CA7713138%
      St. Helena, CA5,9953432%
      Calistoga, CA5,2813432%
      Santa Rosa, CA173,1653432%
      Deer Park, CA1,0923432%
      Angwin, CA3,5053432%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Pretty Bayou, FL3,5053824%
      Marion, AL3,5073530%
      Newcastle, WY3,5034412%
      Peaceful Valley, WA3,5033432%
      Forest Oaks, NC3,5024314%
      Angwin, CA3,5053432%
      Source: The Angwin, 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.