TODAY NOV21
TEMPERATURE42
HUMIDITY44
PRESSURE
WIND COND.
  • 4230Fri70%50%
  • 4312Sat90%70%
  • 2611Sun20%
  • 3115Mon
  • 3616Tue
daynightWeather update from Helena Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Montana City for July is 72.7 degrees
  • The lowest monthly average temperature in Montana City for December is 21.8 degrees
  • The most monthly precipitation in Montana City occurs in June with 2 inches
  • The air quality index in Montana City is 5% better than the national average
  • The pollution index in Montana City is 58% better than the national average

Compare Montana City, MT Weather

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      Montana City 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
      January13°F35°F24°F0.6"
      February18°F41°F28°F0.7"
      March25°F52°F38°F0.5"
      April31°F60°F44°F0.9"
      May39°F69°F53°F1.8"
      June47°F79°F63°F2.0"
      July55°F91°F73°F0.7"
      August52°F88°F69°F1.1"
      September44°F77°F59°F1.1"
      October34°F62°F46°F0.8"
      November23°F47°F34°F0.8"
      December12°F33°F22°F0.8"

      Montana City 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.
      IndexMontana CityMontanaNational
      Air quality index403442
      Pollution index1,148,190834,4732,726,193

      Montana City air quality

      MeasurementTotal
      Days measured365
      Days with good air quality288
      Days with moderate air quality75
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Montana City temperature with heat index

      Montana City monthly precipitation with daily maximum

      Montana City monthly snow depth with daily maximum

      Montana City monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Spokane Creek, MT4384020.0%
      Helena Valley Northeast, MT3,5194020.0%
      Helena West Side, MT1,6564020.0%
      Winston, MT3184020.0%
      Helena Valley Northwest, MT4,2564020.0%
      Montana City, MT2,8214020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Winner, SD2,8213628.0%
      Palmview South, TX2,8204216.0%
      Huguley, AL2,8194216.0%
      New Haven, MO2,8193922.0%
      Amery, WI2,819468.0%
      Montana City, MT2,8214020.0%
      Source: The Montana City, 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.