TODAY OCT20
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 5228Sat
  • 5139Sun
  • 6139Mon
  • 5533Tue
  • 5436Wed
daynightWeather update from Illinois Valley Regional Airport at
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Hennepin 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°F34°F26°F3.3"
February19°F35°F26°F3.0"
March32°F51°F40°F4.3"
April42°F64°F52°F7.2"
May53°F75°F63°F8.0"
June62°F83°F72°F7.5"
July66°F85°F75°F7.1"
August64°F83°F73°F8.2"
September56°F78°F66°F6.3"
October45°F65°F54°F6.6"
November34°F51°F42°F4.3"
December23°F37°F30°F3.5"

Did you know?

  • The highest monthly average temperature in Hennepin for July is 75 degrees.
  • The lowest monthly average temperature in Hennepin for January is 26 degrees.
  • The most monthly precipitation in Hennepin occurs in August with 8.2 inches.
  • The air quality index in Hennepin is 97% better than the national average.
  • The pollution index in Hennepin is 93% better than the national average.

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Compare Hennepin, IL Weather To Other Cities

Hennepin 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.
IndexHennepinIllinoisNational
Air quality index14150
Pollution index339,1563,347,2955,066,862

Hennepin air quality information

MeasurementTotal
Days measured351
Days with good air quality351
Days with moderate air quality
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Hennepin air quality information

PollutantTotal
Arsenic0.000%
Benzene0.020%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Hennepin temperature with heat index

Hennepin monthly precipitation with daily maximum

Hennepin monthly snow depth with daily maximum

Hennepin monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Cherry, IL478198%
Granville, IL1,305198%
LaSalle, IL9,484198%
Malden, IL309198%
Princeton, IL7,741198%
Hennepin, IL815198%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Spring Hill, PA8154510%
New Florence, PA8154510%
Gaston, IN8153628%
Tatum, NM8153628%
Heidelberg, MS8153138%
Hennepin, IL815198%
Source: The Hennepin, 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.