TODAY OCT13
TEMPERATURE67
HUMIDITY28
PRESSURE101490.06
WIND COND.20 9.3
  • 8756Sun
  • 8658
  • 8957Tue
  • 8556Wed
  • 8053Thu
daynightWeather update from Fort Irwin/Barstow, Bicycle Lake Army Airfield at
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Weather Quick Facts

  • The highest monthly average temperature in Fort Irwin for July is 90.6 degrees
  • The lowest monthly average temperature in Fort Irwin for December is 46.8 degrees
  • The most monthly precipitation in Fort Irwin occurs in December with 0.7 inches
  • The air quality index in Fort Irwin is 64% better than the national average
  • The pollution index in Fort Irwin is 674% worse than the national average

Compare Fort Irwin, CA Weather

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      Fort Irwin 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°F63°F48°F0.7"
      February40°F68°F53°F0.5"
      March46°F75°F60°F0.2"
      April51°F82°F65°F0.2"
      May59°F91°F74°F0.0"
      June68°F102°F85°F0.0"
      July75°F107°F91°F0.2"
      August73°F105°F89°F0.3"
      September66°F97°F81°F0.1"
      October54°F85°F68°F0.2"
      November43°F72°F56°F0.3"
      December35°F61°F47°F0.7"

      Fort Irwin 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.
      IndexFort IrwinCaliforniaNational
      Air quality index155542
      Pollution index21,095,50010,473,1902,726,193

      Fort Irwin air quality

      MeasurementTotal
      Days measured365
      Days with good air quality352
      Days with moderate air quality12
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic1.700%
      Benzene0.350%
      Carbon Tetrachloride0.004%
      Lead0.580%
      Mercury1.550%

      Average monthly Fort Irwin temperature with heat index

      Fort Irwin monthly precipitation with daily maximum

      Fort Irwin monthly snow depth with daily maximum

      Fort Irwin monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fort Irwin, CA9,5731570.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Hermantown, MN9,5773530.0%
      Bristol, PA9,5774118.0%
      Stanley, MB9,568n/a 
      Pine Ridge, FL9,5783040.0%
      Chesapeake Ranch Estates, MD9,5794118.0%
      Fort Irwin, CA9,5731570.0%
      Source: The Fort Irwin, 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.