TODAY DEC22
TEMPERATURE33
HUMIDITY99
PRESSURE
WIND COND.
  • 4130Sun80%
  • 4225Mon60%40%
  • 3928Tue60%50%
  • 3825
  • 3928Thu
daynightWeather update from ST. REGIS at
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Weather Quick Facts

  • The highest monthly average temperature in St. Regis for July is 60.7 degrees
  • The lowest monthly average temperature in St. Regis for December is 20.6 degrees
  • The most monthly precipitation in St. Regis occurs in March with 6.5 inches
  • The air quality index in St. Regis is 5% better than the national average
  • The pollution index in St. Regis is 59% better than the national average

Compare St. Regis, MT Weather

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      St. Regis 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
      January19°F28°F23°F4.8"
      February19°F30°F24°F4.6"
      March23°F34°F27°F6.5"
      April27°F41°F32°F3.4"
      May35°F52°F42°F2.7"
      June42°F60°F49°F3.5"
      July53°F72°F61°F1.0"
      August51°F71°F59°F1.0"
      September44°F61°F50°F1.6"
      October32°F45°F37°F4.2"
      November23°F33°F27°F6.4"
      December16°F25°F21°F6.1"

      St. Regis 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.
      IndexSt. RegisMontanaNational
      Air quality index403442
      Pollution index1,107,360834,4732,726,193

      St. Regis 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
      Arsenic0.001%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.004%
      Mercury0.000%

      Average monthly St. Regis temperature with heat index

      St. Regis monthly precipitation with daily maximum

      St. Regis monthly snow depth with daily maximum

      St. Regis monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Riverbend, MT3324020.0%
      De Borgia, MT714020.0%
      Superior, MT7334020.0%
      Paradise, MT1144020.0%
      Plains, MT1,0194020.0%
      St. Regis, MT2074020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Daviston, AL2073824.0%
      Dell, AR2072648.0%
      Phippsburg, CO207476.0%
      Woodside, DE2074216.0%
      Banner, IL2074118.0%
      St. Regis, MT2074020.0%
      Source: The St. Regis, 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.