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Key findings

  • The highest monthly average temperature in Etna for July is 71 degrees
  • The lowest monthly average temperature in Etna for December is 35 degrees
  • The most monthly precipitation in Etna occurs in December with 6.7 inches
  • The air quality index in Etna is 28% better than the national average
  • The pollution index in Etna is 11% worse than the national average

Compare Etna, CA Weather

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      Etna 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
      January27°F46°F35°F5.5"
      February29°F51°F38°F6.1"
      March32°F55°F42°F6.5"
      April35°F62°F47°F3.2"
      May41°F72°F55°F1.7"
      June47°F80°F63°F1.4"
      July52°F89°F71°F0.2"
      August50°F88°F69°F0.1"
      September44°F81°F61°F0.6"
      October38°F67°F50°F2.8"
      November32°F53°F41°F3.6"
      December27°F45°F35°F6.7"

      Etna 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.
      IndexEtnaCaliforniaNational
      Air quality index365550
      Pollution index5,642,31018,106,7265,066,862

      Etna air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality295
      Days with moderate air quality63
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality4

      Etna air quality information

      PollutantTotal
      Arsenic0.060%
      Benzene0.080%
      Carbon Tetrachloride0.000%
      Lead0.050%
      Mercury0.050%

      Average monthly Etna temperature with heat index

      Etna monthly precipitation with daily maximum

      Etna monthly snow depth with daily maximum

      Etna monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Fort Jones, CA8163628%
      Greenview, CA1943628%
      Etna, CA7333628%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Waterville, KS7333236%
      Hardy, AR7333628%
      Reddick, FL7333824%
      Garden Plain, KS7334020%
      Ellendale, MN7333628%
      Etna, CA7333628%
      Source: The Etna, 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.