TODAY MAY30
TEMPERATURE73
HUMIDITY44
PRESSURE30.19
WIND COND.10 8.1
  • 7153Sun
  • 7863Mon
  • 8869Tue
  • 9070Wed30%
  • 8869Thu40%30%
daynightWeather update from Salem, Salem-Leckrone Airport at
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St. Peter 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
January25°F41°F32°F3.5"
February27°F44°F34°F2.0"
March39°F58°F47°F3.7"
April48°F69°F58°F7.8"
May57°F77°F66°F5.4"
June66°F86°F76°F8.3"
July68°F88°F78°F7.4"
August66°F87°F76°F7.2"
September59°F81°F69°F8.9"
October48°F70°F58°F5.6"
November38°F57°F47°F4.2"
December30°F45°F37°F4.9"

Did you know?

  • The highest monthly average temperature in St. Peter for July is 78 degrees.
  • The lowest monthly average temperature in St. Peter for January is 32 degrees.
  • The most monthly precipitation in St. Peter occurs in September with 8.9 inches.
  • The air quality index in St. Peter is 26% better than the national average.
  • The pollution index in St. Peter is 69% better than the national average.

Compare St. Peter, IL Weather To Other Cities

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      St. Peter 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. PeterIllinoisNational
      Air quality index374150
      Pollution index1,561,3103,347,2955,066,862

      St. Peter air quality information

      MeasurementTotal
      Days measured214
      Days with good air quality201
      Days with moderate air quality13
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      St. Peter air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.040%
      Carbon Tetrachloride0.010%
      Lead0.002%
      Mercury0.002%

      Average monthly St. Peter temperature with heat index

      St. Peter monthly precipitation with daily maximum

      St. Peter monthly snow depth with daily maximum

      St. Peter monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Altamont, IL2,3143726%
      Iola, IL1483726%
      St. Elmo, IL1,2983726%
      Brownstown, IL7103726%
      Kinmundy, IL1,0073726%
      St. Peter, IL3883726%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Tetonia, ID3884020%
      Palisade, NE3881962%
      Flat Top Mountain, TN3883628%
      Uplands Park, MO3886020%
      Kellnersville, WI3883726%
      St. Peter, IL3883726%
      Source: The St. Peter, IL 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.