TODAY AUG17
TEMPERATURE84
HUMIDITY72
PRESSURE30
WIND COND.230 9.2
  • 8567Sat20%30%
  • 8670Sun
  • 8367Mon50%
  • 8162Tue
  • 7958Wed
daynightWeather update from Mount Vernon, Mount Vernon Airport at

Sims Average Weather

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
January25°F41°F32°F8.1"
February27°F44°F34°F1.6"
March39°F58°F47°F5.3"
April48°F69°F58°F10.0"
May57°F77°F66°F5.8"
June66°F86°F76°F3.6"
July68°F87°F77°F8.5"
August66°F86°F75°F10.2"
September59°F81°F69°F6.4"
October48°F70°F58°F6.6"
November37°F57°F46°F6.8"
December30°F45°F37°F4.1"

Did you know?

  • The highest monthly average temperature in Sims for July is 77 degrees.
  • The lowest monthly average temperature in Sims for January is 32 degrees.
  • The most monthly precipitation in Sims occurs in August with 10.2 inches.
  • The air quality index in Sims is 21% better than the national average.
  • The pollution index in Sims is 11% better than the national average.

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Compare Sims, IL Weather To Other Cities

Sims 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.
IndexSimsIllinoisNational
Air quality index394150
Pollution index4,489,3403,347,2955,066,862

Sims air quality information

MeasurementTotal
Days measured243
Days with good air quality204
Days with moderate air quality39
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Sims air quality information

PollutantTotal
Arsenic0.080%
Benzene0.020%
Carbon Tetrachloride0.002%
Lead0.020%
Mercury0.050%

Average monthly Sims temperature with heat index

Sims monthly precipitation with daily maximum

Sims monthly snow depth with daily maximum

Sims monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Cisne, IL6113922%
Johnsonville, IL583922%
Springerton, IL1173922%
Belle Prairie City, IL633922%
Dahlgren, IL4023922%
Sims, IL2763922%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Ellsworth, IL2763628%
Athens, LA276492%
Marydel, MD2763824%
Augusta, MT2762648%
Creswell, NC276394%
Sims, IL2763922%
Source: The Sims, 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.