TODAY APR23
TEMPERATURE61
HUMIDITY20
PRESSURE101800
WIND COND. 5.4
  • 7645Wed
  • 7246Thu50%
  • 6543Fri50%50%
  • 5740Sat70%50%
  • 6241Sun40%20%
daynightWeather update from Billings, Billings Logan International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in St. Xavier for July is 74.8 degrees
  • The lowest monthly average temperature in St. Xavier for December is 25.3 degrees
  • The most monthly precipitation in St. Xavier occurs in May with 3 inches
  • The air quality index in St. Xavier is 50% better than the national average
  • The pollution index in St. Xavier is 79% better than the national average

Compare St. Xavier, MT Weather

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      St. Xavier 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"

      St. Xavier 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. XavierMontanaNational
      Air quality index213442
      Pollution index562,118834,4732,726,193

      St. Xavier air quality information

      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

      St. Xavier air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly St. Xavier temperature with heat index

      St. Xavier monthly precipitation with daily maximum

      St. Xavier monthly snow depth with daily maximum

      St. Xavier monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fort Smith, MT1602158.0%
      Crow Agency, MT1,9722158.0%
      St. Xavier, MT1842158.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Deer Creek, AZ1847448.0%
      Clio, CA1844412.0%
      Lodoga, CA1843138.0%
      Tooleville, CA1846020.0%
      Farmington, DE1843628.0%
      St. Xavier, MT1842158.0%
      Source: The St. Xavier, 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.