TODAY MAY27
TEMPERATURE81
HUMIDITY70
PRESSURE29.88
WIND COND.150 17.2
  • 7564Wed60%60%
  • 7864Thu30%80%
  • 7655Fri40%20%
  • 7356Sat
  • 7457Sun
daynightWeather update from St. Louis Regional Airport at
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St. Jacob 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
January23°F42°F32°F5.6"
February25°F45°F34°F3.8"
March37°F59°F47°F7.1"
April47°F70°F57°F10.2"
May56°F77°F66°F8.9"
June65°F87°F76°F9.2"
July68°F89°F78°F8.0"
August66°F88°F76°F7.8"
September58°F82°F69°F8.4"
October47°F70°F57°F8.6"
November36°F57°F46°F6.9"
December28°F45°F36°F8.2"

Did you know?

  • The highest monthly average temperature in St. Jacob for July is 78 degrees.
  • The lowest monthly average temperature in St. Jacob for January is 32 degrees.
  • The most monthly precipitation in St. Jacob occurs in April with 10.2 inches.
  • The air quality index in St. Jacob is 21% worse than the national average.
  • The pollution index in St. Jacob is 20% worse than the national average.

Compare St. Jacob, IL Weather To Other Cities

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      St. Jacob 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. JacobIllinoisNational
      Air quality index604150
      Pollution index6,055,6403,347,2955,066,862

      St. Jacob air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality99
      Days with moderate air quality231
      Days w/ poor A.Q. for sensitive groups33
      Days with unhealthy air quality2

      St. Jacob air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.040%
      Lead0.100%
      Mercury0.230%

      Average monthly St. Jacob temperature with heat index

      St. Jacob monthly precipitation with daily maximum

      St. Jacob monthly snow depth with daily maximum

      St. Jacob monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Breese, IL4,5903922%
      Germantown, IL1,1593922%
      Belleville, IL42,7296020%
      Damiansville, IL5626020%
      Glen Carbon, IL12,7826020%
      St. Jacob, IL1,3546020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Lincoln Beach, OR1,3541766%
      Chums Corner, MI1,3533628%
      Nellieburg, MS1,3553138%
      Kodiak Station, AK1,3532942%
      Mulberry, IN1,355524%
      St. Jacob, IL1,3546020%
      Source: The St. Jacob, 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.