TODAY NOV22
TEMPERATURE36
HUMIDITY92
PRESSURE101250
WIND COND.330 11.2
  • 4532Fri
  • 4433Sat
  • 4942Sun
  • 4825Mon
  • 3624Tue
daynightWeather update from Chicago / Wheeling, Pal-Waukee Airport at
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Weather Quick Facts

  • 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 31% worse than the national average
  • The pollution index in Forest Lake is 80% 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 index554142
      Pollution index543,5163,148,6942,726,193

      Forest Lake air quality

      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

      Air quality details

      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

      CityPopulationAir Quality IndexNational Avg.
      Grandwood Park, IL5,1143922.0%
      Mundelein, IL31,5743922.0%
      Venetian Village, IL2,5613922.0%
      Holiday Hills, IL6533922.0%
      McHenry, IL26,8893922.0%
      Forest Lake, IL1,2925510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Redstone Arsenal, AL1,2924412.0%
      Sherwood No. 159, SK1,292n/a 
      Brookdale, CA1,2933530.0%
      Tennille, GA1,2913824.0%
      Lapwai, ID1,2912942.0%
      Forest Lake, IL1,2925510.0%
      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.