TODAY MAY15
TEMPERATURE56
HUMIDITY79
PRESSURE
WIND COND.104 5.8
  • 6552Sat20%
  • 6351Sun
  • 6652Mon
  • 7154Tue
  • 7051Wed
daynightWeather update from Thousand Oaks - Moorpark Rd at

Key findings

  • The highest monthly average temperature in Santa Rosa Valley for September is 68.1 degrees
  • The lowest monthly average temperature in Santa Rosa Valley for December is 54.9 degrees
  • The most monthly precipitation in Santa Rosa Valley occurs in January with 2.1 inches
  • The air quality index in Santa Rosa Valley is 8% better than the national average
  • The pollution index in Santa Rosa Valley is 167% worse than the national average

Compare Santa Rosa Valley, CA Weather

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      Santa Rosa Valley 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
      January45°F69°F56°F2.1"
      February44°F68°F56°F1.9"
      March46°F70°F57°F1.4"
      April48°F71°F59°F0.7"
      May52°F72°F61°F0.2"
      June57°F74°F65°F0.0"
      July60°F78°F68°F0.1"
      August60°F78°F68°F0.0"
      September59°F80°F68°F0.1"
      October54°F78°F65°F0.4"
      November48°F74°F60°F0.7"
      December43°F68°F55°F2.0"

      Santa Rosa Valley 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.
      IndexSanta Rosa ValleyCaliforniaNational
      Air quality index465550
      Pollution index13,529,80018,106,7265,066,862

      Santa Rosa Valley air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality214
      Days with moderate air quality142
      Days w/ poor A.Q. for sensitive groups9
      Days with unhealthy air quality0

      Santa Rosa Valley air quality information

      PollutantTotal
      Arsenic0.150%
      Benzene0.190%
      Carbon Tetrachloride0.010%
      Lead0.180%
      Mercury0.070%

      Average monthly Santa Rosa Valley temperature with heat index

      Santa Rosa Valley monthly precipitation with daily maximum

      Santa Rosa Valley monthly snow depth with daily maximum

      Santa Rosa Valley monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Camarillo, CA66,630468%
      Lake Sherwood, CA1,651468%
      Piru, CA1,950468%
      Saticoy, CA1,287468%
      Casa Conejo, CA3,180468%
      Santa Rosa Valley, CA3,601468%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Peralta, NM3,601536%
      Sneads Ferry, NC3,6013432%
      Fairview, NC3,602492%
      Severance, CO3,6034510%
      King City, OR3,5993824%
      Santa Rosa Valley, CA3,601468%
      Source: The Santa Rosa Valley, 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.