TODAY MAR19
TEMPERATURE
HUMIDITY
PRESSURE100510
WIND COND.250 24.1
  • 5116Tue
  • 3420Wed
  • 3825Thu90%
  • 3512Fri90%
  • 2920Sat40%
daynightWeather update from Mankato, Mankato Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in St. Clair for July is 73 degrees
  • The lowest monthly average temperature in St. Clair for January is 16.2 degrees
  • The most monthly precipitation in St. Clair occurs in July with 6.8 inches
  • The air quality index in St. Clair is 9% worse than the national average
  • The pollution index in St. Clair is 26% worse than the national average

Compare St. Clair, MN Weather

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      St. Clair 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
      January9°F24°F16°F1.2"
      February11°F28°F18°F2.3"
      March27°F44°F34°F2.2"
      April39°F59°F47°F2.9"
      May50°F71°F59°F4.0"
      June60°F80°F69°F5.5"
      July64°F83°F73°F6.8"
      August61°F80°F70°F6.7"
      September53°F74°F63°F4.4"
      October41°F60°F49°F3.0"
      November28°F45°F36°F2.0"
      December13°F28°F20°F1.4"

      St. Clair 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. ClairMinnesotaNational
      Air quality index463542
      Pollution index3,433,9001,854,5192,726,193

      St. Clair air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality214
      Days with moderate air quality148
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality1

      St. Clair air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.030%
      Carbon Tetrachloride0.005%
      Lead0.030%
      Mercury0.001%

      Average monthly St. Clair temperature with heat index

      St. Clair monthly precipitation with daily maximum

      St. Clair monthly snow depth with daily maximum

      St. Clair monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Good Thunder, MN5581570.0%
      Waldorf, MN1801570.0%
      Amboy, MN6141570.0%
      Mapleton, MN1,6061570.0%
      Janesville, MN2,5023628.0%
      St. Clair, MN764468.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Seligman, AZ7644314.0%
      Ballard, CA7644412.0%
      Colo, IA7643726.0%
      Lockridge, IA7642942.0%
      Highland Hills, OH76450= 100
      St. Clair, MN764468.0%
      Source: The St. Clair, MN 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.