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Key findings

  • The highest monthly average temperature in Franklin for July is 76 degrees
  • The lowest monthly average temperature in Franklin for January is 29 degrees
  • The most monthly precipitation in Franklin occurs in June with 8 inches
  • The air quality index in Franklin is 20% better than the national average
  • The pollution index in Franklin is 77% better than the national average

Compare Franklin, IL Weather

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      Franklin 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
      January21°F39°F29°F3.2"
      February22°F41°F31°F2.9"
      March35°F56°F44°F3.7"
      April44°F68°F55°F6.8"
      May55°F76°F65°F5.2"
      June64°F85°F74°F8.0"
      July66°F87°F76°F5.2"
      August64°F85°F74°F6.3"
      September57°F80°F68°F6.6"
      October46°F68°F56°F3.3"
      November36°F55°F45°F5.0"
      December26°F41°F33°F5.3"

      Franklin 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.
      IndexFranklinIllinoisNational
      Air quality index404150
      Pollution index1,150,6703,347,2955,066,862

      Franklin air quality information

      MeasurementTotal
      Days measured360
      Days with good air quality287
      Days with moderate air quality73
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Franklin air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Franklin temperature with heat index

      Franklin monthly precipitation with daily maximum

      Franklin monthly snow depth with daily maximum

      Franklin monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Jacksonville, IL19,0424020%
      Murrayville, IL5444020%
      South Jacksonville, IL3,2724020%
      Berlin, IL1834020%
      Loami, IL9664020%
      Franklin, IL4664020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Inchelium, WA4664314%
      Eureka, WI4663628%
      Galva, IA4663530%
      Thompson, IA4661570%
      South Renovo, PA4663530%
      Franklin, IL4664020%
      Source: The Franklin, 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.