TODAY MAR29
TEMPERATURE39
HUMIDITY76
PRESSURE101290
WIND COND.120 11.2
  • 5333Fri20%
  • 5933Sat20%
  • 6133Sun
  • 6937Mon
  • 7341Tue
daynightWeather update from Montague Siskiyou County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hornbrook for July is 75 degrees
  • The lowest monthly average temperature in Hornbrook for December is 33.5 degrees
  • The most monthly precipitation in Hornbrook occurs in December with 2.2 inches
  • The air quality index in Hornbrook is 14% better than the national average
  • The pollution index in Hornbrook is 408% worse than the national average

Compare Hornbrook, CA Weather

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      Hornbrook 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
      January25°F46°F34°F1.7"
      February27°F53°F39°F1.5"
      March31°F58°F43°F1.5"
      April33°F64°F48°F1.0"
      May40°F74°F57°F0.9"
      June47°F83°F65°F0.8"
      July55°F94°F75°F0.2"
      August52°F93°F73°F0.2"
      September45°F85°F64°F0.2"
      October37°F70°F52°F1.3"
      November30°F54°F41°F1.5"
      December25°F45°F34°F2.2"

      Hornbrook 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.
      IndexHornbrookCaliforniaNational
      Air quality index365542
      Pollution index13,842,60010,473,1902,726,193

      Hornbrook 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

      Hornbrook air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.210%
      Carbon Tetrachloride0.030%
      Lead0.030%
      Mercury0.020%

      Average monthly Hornbrook temperature with heat index

      Hornbrook monthly precipitation with daily maximum

      Hornbrook monthly snow depth with daily maximum

      Hornbrook monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Montague, CA1,5193628.0%
      Yreka, CA7,5893628.0%
      Hornbrook, CA2433628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Koyuk, AK2433824.0%
      Malcolm, AL2434216.0%
      East Globe, AZ2436020.0%
      McNeal, AZ2434510.0%
      Bloomfield, CA2433432.0%
      Hornbrook, CA2433628.0%
      Source: The Hornbrook, 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.