TODAY NOV26
TEMPERATURE36
HUMIDITY99
PRESSURE
WIND COND.102 6.4
  • 4226Tue50%50%
  • 4024Wed70%50%
  • 392340%40%
  • 3719Fri
  • 3619Sat
daynightWeather update from TROY at
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Weather Quick Facts

  • The highest monthly average temperature in Troy for July is 71.1 degrees
  • The lowest monthly average temperature in Troy for December is 26.3 degrees
  • The most monthly precipitation in Troy occurs in January with 10.5 inches
  • The air quality index in Troy is 12% better than the national average
  • The pollution index in Troy is 64% better than the national average

Compare Troy, MT Weather

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      Troy 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
      January24°F34°F28°F10.5"
      February27°F40°F32°F1.8"
      March31°F49°F39°F2.0"
      April37°F59°F47°F1.0"
      May45°F70°F56°F1.9"
      June51°F76°F62°F2.4"
      July58°F87°F71°F0.8"
      August56°F85°F69°F1.1"
      September48°F73°F58°F1.5"
      October39°F57°F46°F2.2"
      November31°F43°F35°F2.3"
      December22°F32°F26°F8.7"

      Troy 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.
      IndexTroyMontanaNational
      Air quality index373442
      Pollution index968,253834,4732,726,193

      Troy air quality

      MeasurementTotal
      Days measured365
      Days with good air quality302
      Days with moderate air quality62
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.000%

      Average monthly Troy temperature with heat index

      Troy monthly precipitation with daily maximum

      Troy monthly snow depth with daily maximum

      Troy monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Troy, MT9723726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Lakeview, AR9723628.0%
      Brunswick, MO9723824.0%
      Clarkton, NC9723040.0%
      Lake Waynoka, OH9724314.0%
      Pound, VA9724510.0%
      Troy, MT9723726.0%
      Source: The Troy, 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.