TODAY DEC06
TEMPERATURE34
HUMIDITY67
PRESSURE30.23
WIND COND.350 16.1
  • 4034Sat
  • 4740Sun60%
  • 4623Mon60%
  • 269Tue
  • 1911Wed
daynightWeather update from Chicago, Chicago Midway Airport at
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Summit 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
January20°F34°F26°F1.9"
February21°F36°F28°F1.6"
March33°F49°F40°F2.4"
April42°F62°F51°F3.6"
May52°F73°F61°F4.3"
June63°F82°F72°F4.6"
July68°F86°F76°F3.5"
August67°F83°F75°F5.1"
September60°F77°F68°F2.8"
October48°F65°F55°F3.9"
November36°F51°F43°F2.2"
December25°F37°F31°F2.2"

Did you know?

  • The highest monthly average temperature in Summit for July is 76 degrees.
  • The lowest monthly average temperature in Summit for January is 26 degrees.
  • The most monthly precipitation in Summit occurs in August with 5.1 inches.
  • The air quality index in Summit is 21% worse than the national average.
  • The pollution index in Summit is 6% better than the national average.

Compare Summit, IL Weather To Other Cities

Summit 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.
IndexSummitIllinoisNational
Air quality index604150
Pollution index4,766,0003,347,2955,066,862

Summit air quality information

MeasurementTotal
Days measured365
Days with good air quality72
Days with moderate air quality281
Days w/ poor A.Q. for sensitive groups11
Days with unhealthy air quality1

Summit air quality information

PollutantTotal
Arsenic0.060%
Benzene0.050%
Carbon Tetrachloride0.000%
Lead0.020%
Mercury0.090%

Average monthly Summit temperature with heat index

Summit monthly precipitation with daily maximum

Summit monthly snow depth with daily maximum

Summit monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bedford Park, IL5816020%
Berwyn, IL56,4146020%
Bridgeview, IL16,3816020%
Burnham, IL4,2126020%
Chicago, IL2,714,0176020%
Summit, IL11,4096020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Two Rivers, WI11,4093726%
Signal Hill, CA11,4047448%
Peru, IN11,4153236%
Somerset, KY11,4153628%
Centerton, AR11,4033922%
Summit, IL11,4096020%
Source: The Summit, 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.
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