TODAY NOV25
TEMPERATURE13
HUMIDITY83
PRESSURE
WIND COND.114 1.6
  • 3917Tue
  • 398Wed50%
  • 318
  • 304Fri
  • 349Sat
daynightWeather update from GREENFIELDS at
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Weather Quick Facts

  • The highest monthly average temperature in Simms for July is 67.9 degrees
  • The lowest monthly average temperature in Simms for February is 18.2 degrees
  • The most monthly precipitation in Simms occurs in September with 7.8 inches
  • The air quality index in Simms is 50% better than the national average
  • The pollution index in Simms is 58% better than the national average

Compare Simms, MT Weather

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      Simms 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
      January12°F30°F20°F1.5"
      February10°F28°F18°F1.2"
      March21°F45°F31°F2.1"
      April30°F56°F42°F1.3"
      May37°F63°F50°F5.0"
      June46°F74°F59°F3.2"
      July52°F84°F68°F2.0"
      August51°F82°F66°F0.9"
      September42°F69°F54°F7.8"
      October35°F59°F45°F2.5"
      November22°F42°F31°F1.5"
      December12°F30°F21°F1.3"

      Simms 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.
      IndexSimmsMontanaNational
      Air quality index213442
      Pollution index1,148,190834,4732,726,193

      Simms air quality

      MeasurementTotal
      Days measured363
      Days with good air quality350
      Days with moderate air quality12
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Simms temperature with heat index

      Simms monthly precipitation with daily maximum

      Simms monthly snow depth with daily maximum

      Simms monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fort Shaw, MT1382158.0%
      Sun River, MT412158.0%
      Fairfield, MT6902158.0%
      Simms, MT3382158.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Northway, AK3383824.0%
      Tununak, AK3383138.0%
      St. Charles, AR3384314.0%
      Strawberry, AR3384510.0%
      Winkelman, AZ338476.0%
      Simms, MT3382158.0%
      Source: The Simms, 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.