TODAY MAY06
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 7445Thu
  • 7747Fri
  • 8450Sat
  • 8251Sun
  • 8651Mon
daynightWeather update from KF6YUA Sebastopol at

Key findings

  • The highest monthly average temperature in Roseland for July is 64.9 degrees
  • The lowest monthly average temperature in Roseland for December is 46.1 degrees
  • The most monthly precipitation in Roseland occurs in December with 6.9 inches
  • The air quality index in Roseland is 32% better than the national average
  • The pollution index in Roseland is 56% worse than the national average

Compare Roseland, CA Weather

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      Roseland 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"

      Roseland 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.
      IndexRoselandCaliforniaNational
      Air quality index345550
      Pollution index7,898,29018,106,7265,066,862

      Roseland 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

      Roseland air quality information

      PollutantTotal
      Arsenic0.260%
      Benzene0.080%
      Carbon Tetrachloride0.005%
      Lead0.240%
      Mercury0.270%

      Average monthly Roseland temperature with heat index

      Roseland monthly precipitation with daily maximum

      Roseland monthly snow depth with daily maximum

      Roseland monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Cotati, CA7,4153432%
      Larkfield-Wikiup, CA9,2573432%
      St. Helena, CA5,9953432%
      Bloomfield, CA4443432%
      Graton, CA1,6653432%
      Roseland, CA5,8593432%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Prosser, WA5,8603726%
      Wesley Hills, NY5,860512%
      Dowagiac, MI5,8633922%
      Spring Hill, KS5,863476%
      Charleston, MO5,8554412%
      Roseland, CA5,8593432%
      Source: The Roseland, 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.