TODAY MAY12
TEMPERATURE55
HUMIDITY41
PRESSURE30.49
WIND COND.
  • 6743Thu
  • 6747Fri20%
  • 6650Sat20%
  • 7055Sun
  • 7254Mon
daynightWeather update from Rochelle, Rochelle Municipal-Koritz Field Airport at

Key findings

  • The highest monthly average temperature in Lee for July is 71.5 degrees
  • The lowest monthly average temperature in Lee for January is 21.6 degrees
  • The most monthly precipitation in Lee occurs in October with 7.1 inches
  • The air quality index in Lee is 100% better than the national average
  • The pollution index in Lee is 63% better than the national average

Compare Lee, IL Weather

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      Lee 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
      January14°F30°F22°F3.8"
      February14°F32°F23°F3.4"
      March29°F48°F37°F4.3"
      April39°F62°F50°F4.5"
      May50°F74°F61°F5.4"
      June59°F81°F70°F6.7"
      July61°F82°F71°F6.0"
      August59°F81°F69°F6.4"
      September51°F76°F63°F3.8"
      October41°F63°F51°F7.1"
      November29°F48°F38°F3.9"
      December19°F34°F26°F3.6"

      Lee 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.
      IndexLeeIllinoisNational
      Air quality index04150
      Pollution index1,874,4903,347,2955,066,862

      Lee air quality information

      MeasurementTotal
      Days measured335
      Days with good air quality334
      Days with moderate air quality1
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Lee air quality information

      PollutantTotal
      Arsenic0.002%
      Benzene0.030%
      Carbon Tetrachloride0.010%
      Lead0.010%
      Mercury0.010%

      Average monthly Lee temperature with heat index

      Lee monthly precipitation with daily maximum

      Lee monthly snow depth with daily maximum

      Lee monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Earlville, IL1,6720100%
      Compton, IL2590100%
      Sublette, IL4360100%
      Lake Holiday, IL4,7180100%
      Paw Paw, IL8120100%
      Lee, IL3580100%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Union Valley, TX358512%
      Herrick, IL3584020%
      Grays Prairie, TX3584118%
      Shoal Creek Drive, MO3583726%
      Cornell, IL3580100%
      Lee, IL3580100%
      Source: The Lee, 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.