TODAY MAY13
TEMPERATURE39
HUMIDITY70
PRESSURE30.42
WIND COND.
  • 6543Thu
  • 6850Fri
  • 6650Sat30%30%
  • 6954Sun
  • 7052Mon
daynightWeather update from Chicago / Wheeling, Pal-Waukee Airport at

Key findings

  • The highest monthly average temperature in Forest Lake for July is 74.5 degrees
  • The lowest monthly average temperature in Forest Lake for January is 24.9 degrees
  • The most monthly precipitation in Forest Lake occurs in June with 4.7 inches
  • The air quality index in Forest Lake is 11% worse than the national average
  • The pollution index in Forest Lake is 89% better than the national average

Compare Forest Lake, IL Weather

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      Forest Lake 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
      January18°F33°F25°F1.1"
      February19°F34°F26°F1.4"
      March30°F48°F38°F1.8"
      April39°F60°F49°F2.7"
      May49°F71°F60°F3.6"
      June60°F81°F69°F4.7"
      July65°F85°F74°F4.0"
      August64°F83°F73°F4.4"
      September56°F76°F66°F2.7"
      October45°F64°F54°F3.2"
      November34°F50°F42°F1.7"
      December23°F37°F30°F2.0"

      Forest Lake 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.
      IndexForest LakeIllinoisNational
      Air quality index554150
      Pollution index543,5163,347,2955,066,862

      Forest Lake air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality121
      Days with moderate air quality227
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality1

      Forest Lake air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.004%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Forest Lake temperature with heat index

      Forest Lake monthly precipitation with daily maximum

      Forest Lake monthly snow depth with daily maximum

      Forest Lake monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Grayslake, IL21,0533922%
      Libertyville, IL20,4353922%
      Johnsburg, IL6,2853922%
      Oakwood Hills, IL2,1153922%
      Round Lake Heights, IL3,1103922%
      Forest Lake, IL1,7435510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Clearwater, MN1,7433236%
      Williamsport, IN1,7434216%
      Sparta, GA1,7433824%
      Glen Lyon, PA1,7433824%
      Sharon, WI1,7443824%
      Forest Lake, IL1,7435510%
      Source: The Forest Lake, 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.