TODAY NOV07
TEMPERATURE30
HUMIDITY69
PRESSURE
WIND COND.200 14.8
  • 4720Thu
  • 5127Fri
  • 5031Sat50%
  • 5030Sun
  • 4826
daynightWeather update from Ravalli County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Corvallis for July is 71 degrees
  • The lowest monthly average temperature in Corvallis for December is 23.7 degrees
  • The most monthly precipitation in Corvallis occurs in June with 2 inches
  • The air quality index in Corvallis is 5% better than the national average
  • The pollution index in Corvallis is 69% better than the national average

Compare Corvallis, MT Weather

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      Corvallis 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
      January16°F34°F25°F0.9"
      February21°F40°F30°F1.0"
      March26°F51°F38°F1.0"
      April31°F60°F44°F1.1"
      May38°F69°F53°F1.4"
      June45°F78°F61°F2.0"
      July51°F91°F71°F0.6"
      August49°F88°F68°F0.7"
      September42°F77°F58°F1.0"
      October33°F59°F45°F1.2"
      November24°F44°F33°F1.4"
      December15°F32°F24°F1.2"

      Corvallis 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.
      IndexCorvallisMontanaNational
      Air quality index403442
      Pollution index848,303834,4732,726,193

      Corvallis air quality

      MeasurementTotal
      Days measured365
      Days with good air quality224
      Days with moderate air quality137
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality1

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.020%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.000%

      Average monthly Corvallis temperature with heat index

      Corvallis monthly precipitation with daily maximum

      Corvallis monthly snow depth with daily maximum

      Corvallis monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Victor, MT9734020.0%
      Hamilton, MT4,8274020.0%
      Charlos Heights, MT04020.0%
      Pinesdale, MT9994020.0%
      Stevensville, MT1,8974020.0%
      Corvallis, MT1,7554020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Kaibito, AZ1,7554510.0%
      Portola, CA1,7554412.0%
      Prudenville, MI1,7553628.0%
      Decatur, MS1,7553628.0%
      Mercer, PA1,7553138.0%
      Corvallis, MT1,7554020.0%
      Source: The Corvallis, MT 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.