TODAY MAY27
TEMPERATURE77
HUMIDITY69
PRESSURE29.96
WIND COND.140 11.4
  • 7861Thu40%80%
  • 7352Fri60%
  • 7151Sat
  • 7151Sun
  • 7459Mon
daynightWeather update from University of Illinois - Willard at
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Monticello 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°F36°F27°F1.7"
February19°F38°F28°F1.8"
March33°F54°F42°F2.3"
April42°F67°F54°F4.2"
May53°F77°F64°F4.2"
June63°F85°F73°F5.0"
July64°F85°F74°F4.5"
August62°F84°F73°F2.4"
September56°F80°F67°F3.4"
October44°F67°F55°F3.7"
November33°F53°F42°F2.8"
December24°F39°F31°F2.7"

Did you know?

  • The highest monthly average temperature in Monticello for July is 74 degrees.
  • The lowest monthly average temperature in Monticello for January is 27 degrees.
  • The most monthly precipitation in Monticello occurs in June with 5 inches.
  • The air quality index in Monticello is 28% better than the national average.
  • The pollution index in Monticello is 86% better than the national average.

Compare Monticello, IL Weather To Other Cities

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      Monticello 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.
      IndexMonticelloIllinoisNational
      Air quality index364150
      Pollution index703,2183,347,2955,066,862

      Monticello air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality311
      Days with moderate air quality54
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Monticello air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Monticello temperature with heat index

      Monticello monthly precipitation with daily maximum

      Monticello monthly snow depth with daily maximum

      Monticello monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Bondville, IL5153628%
      De Witt, IL2213628%
      Mahomet, IL7,9963628%
      Farmer City, IL2,0773628%
      Mansfield, IL8483628%
      Monticello, IL5,6093628%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Portland, CT5,607468%
      Avra Valley, AZ5,606468%
      Morris Plains, NJ5,612536%
      Exeter, PA5,6054020%
      South Apopka, FL5,6133628%
      Monticello, IL5,6093628%
      Source: The Monticello, 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.