TODAY MAY14
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 7950Fri
  • 7348Sat50%50%
  • 7649Sun20%
  • 7749Mon
  • 7445Tue
daynightWeather update from SADDLEBACK at

Key findings

  • The highest monthly average temperature in Sierra City for July is 70.9 degrees
  • The lowest monthly average temperature in Sierra City for December is 39.2 degrees
  • The most monthly precipitation in Sierra City occurs in December with 11.7 inches
  • The air quality index in Sierra City is 12% better than the national average
  • The pollution index in Sierra City is 426% worse than the national average

Compare Sierra City, CA Weather

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      Sierra City 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°F49°F41°F7.8"
      February35°F47°F40°F8.4"
      March36°F49°F41°F10.1"
      April38°F54°F45°F5.7"
      May46°F62°F53°F3.7"
      June55°F71°F62°F1.4"
      July64°F79°F71°F0.1"
      August63°F79°F70°F0.1"
      September58°F74°F65°F1.4"
      October48°F63°F54°F4.8"
      November40°F53°F46°F7.3"
      December34°F46°F39°F11.7"

      Sierra City 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.
      IndexSierra CityCaliforniaNational
      Air quality index445550
      Pollution index26,667,30018,106,7265,066,862

      Sierra City air quality information

      MeasurementTotal
      Days measured361
      Days with good air quality273
      Days with moderate air quality83
      Days w/ poor A.Q. for sensitive groups5
      Days with unhealthy air quality0

      Sierra City air quality information

      PollutantTotal
      Arsenic0.360%
      Benzene0.250%
      Carbon Tetrachloride0.100%
      Lead0.250%
      Mercury0.260%

      Average monthly Sierra City temperature with heat index

      Sierra City monthly precipitation with daily maximum

      Sierra City monthly snow depth with daily maximum

      Sierra City monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Goodyears Bar, CA504412%
      Sierraville, CA394412%
      C-Road, CA1164412%
      Johnsville, CA04412%
      Washington, CA794412%
      Sierra City, CA2044412%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Bear Valley, CA204484%
      Elm Grove, OK2043824%
      Danbury, WI2043530%
      Norcatur, KS2041962%
      Riverdale, NE2041962%
      Sierra City, CA2044412%
      Source: The Sierra City, 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.