TODAY NOV24
TEMPERATURE22
HUMIDITY71
PRESSURE
WIND COND.19 16.1
  • 2812Sun90%
  • 4026Mon
  • 4527Tue20%40%
  • 3918Wed30%50%
  • 311740%20%
daynightWeather update from LITTLE BIGHORN at
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Weather Quick Facts

  • The highest monthly average temperature in Fort Smith for July is 74.8 degrees
  • The lowest monthly average temperature in Fort Smith for December is 25.3 degrees
  • The most monthly precipitation in Fort Smith occurs in May with 3 inches
  • The air quality index in Fort Smith is 50% better than the national average
  • The pollution index in Fort Smith is 92% better than the national average

Compare Fort Smith, MT Weather

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      Fort Smith 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
      January17°F39°F27°F0.5"
      February19°F43°F29°F0.5"
      March27°F54°F39°F1.1"
      April34°F61°F46°F1.7"
      May42°F70°F55°F3.0"
      June51°F81°F65°F1.7"
      July59°F92°F75°F0.9"
      August56°F89°F72°F1.0"
      September48°F79°F62°F1.6"
      October38°F63°F49°F1.7"
      November27°F50°F37°F0.8"
      December16°F36°F25°F0.9"

      Fort Smith 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 SmithMontanaNational
      Air quality index213442
      Pollution index218,962834,4732,726,193

      Fort Smith air quality

      MeasurementTotal
      Days measured362
      Days with good air quality357
      Days with moderate air quality4
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality1

      Air quality details

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

      Average monthly Fort Smith temperature with heat index

      Fort Smith monthly precipitation with daily maximum

      Fort Smith monthly snow depth with daily maximum

      Fort Smith monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      St. Xavier, MT1842158.0%
      Fort Smith, MT1602158.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Tomales, CA1603432.0%
      Dewy Rose, GA1604412.0%
      Alexander, IA1601570.0%
      Andover, IA1604216.0%
      Stockton, IA160468.0%
      Fort Smith, MT1602158.0%
      Source: The Fort Smith, 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.