TODAY MAY07
TEMPERATURE70
HUMIDITY38
PRESSURE30.07
WIND COND.270 14.8
  • 5954Sat60%60%
  • 6845Sun90%70%
  • 6344Mon
  • 6245Tue
  • 6246Wed20%30%
daynightWeather update from Sparta Community-Hunter Field Airport at

Key findings

  • The highest monthly average temperature in Fayetteville for August is 80 degrees
  • The lowest monthly average temperature in Fayetteville for December is 33.3 degrees
  • The most monthly precipitation in Fayetteville occurs in September with 16.1 inches
  • The air quality index in Fayetteville is 9% worse than the national average
  • The pollution index in Fayetteville is 76% better than the national average

Compare Fayetteville, IL Weather

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      Fayetteville 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
      January28°F43°F34°F9.8"
      February26°F45°F34°F4.7"
      March38°F60°F48°F2.9"
      April45°F68°F56°F5.6"
      May56°F79°F67°F3.7"
      June65°F88°F76°F7.6"
      July67°F88°F77°F12.3"
      August70°F93°F80°F7.2"
      September61°F85°F72°F16.1"
      October49°F72°F59°F7.5"
      November38°F59°F47°F11.9"
      December27°F42°F33°F2.9"

      Fayetteville 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.
      IndexFayettevilleIllinoisNational
      Air quality index544150
      Pollution index1,232,9203,347,2955,066,862

      Fayetteville air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality134
      Days with moderate air quality221
      Days w/ poor A.Q. for sensitive groups8
      Days with unhealthy air quality2

      Fayetteville air quality information

      PollutantTotal
      Arsenic0.170%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.290%

      Average monthly Fayetteville temperature with heat index

      Fayetteville monthly precipitation with daily maximum

      Fayetteville monthly snow depth with daily maximum

      Fayetteville monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Tilden, IL7634314%
      Okawville, IL1,6204314%
      Germantown, IL1,1594314%
      Coulterville, IL9344314%
      Venedy, IL182548%
      Fayetteville, IL407548%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Elkhart, IL4074020%
      Terral, OK4072648%
      Kasilof, AK4073138%
      Akiak, AK4073138%
      Calamus, IA407468%
      Fayetteville, IL407548%
      Source: The Fayetteville, 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.