TODAY MAY21
TEMPERATURE58
HUMIDITY78
PRESSURE29.95
WIND COND.220 4.7
  • 8148Mon
  • 8855Tue20%
  • 8153Wed60%50%
  • 8353Thu
  • 8251Fri
daynightWeather update from Montague Siskiyou County Airport at

Hornbrook Average Weather

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
January3°F62°F33°F1.4"
February9°F67°F37°F0.6"
March11°F75°F42°F0.7"
April15°F90°F47°F0.7"
May19°F98°F58°F1.2"
June33°F104°F64°F0.8"
July43°F106°F75°F0.0"
August37°F106°F72°F0.2"
September28°F99°F64°F0.1"
October18°F86°F50°F0.8"
November15°F76°F40°F1.6"
December-2°F60°F33°F2.5"

Did you know?

  • The highest monthly average temperature in Hornbrook for July is 75 degrees.
  • The lowest monthly average temperature in Hornbrook for January is 33 degrees.
  • The most monthly precipitation in Hornbrook occurs in December with 2.5 inches.
  • The air quality index in Hornbrook is 7% better than the national average.
  • The pollution index in Hornbrook is 173% worse than the national average.

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Compare Hornbrook, CA Weather To Other Cities

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 index465550
Pollution index13,842,60018,106,7265,066,862

Hornbrook air quality information

MeasurementTotal
Days measured365
Days with good air quality211
Days with moderate air quality131
Days w/ poor A.Q. for sensitive groups12
Days with unhealthy air quality9

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

City, StatePopulationAir Quality IndexNational Avg.
Montague, CA1,378468%
Yreka, CA7,598468%
Hornbrook, CA210468%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
St. Marys, IA2104118%
Trinity Center, CA2103824%
Cable, WI2103726%
Foss, OK2104216%
Animas, NM2104216%
Hornbrook, CA210468%
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.