TODAY AUG14
TEMPERATURE67
HUMIDITY95
PRESSURE30.03
WIND COND.
  • 8769Tue20%20%
  • 8269Wed40%60%
  • 8467Thu50%40%
  • 8566Fri
  • 8466Sat
daynightWeather update from Flora Municipal Airport at

Clay City 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
January24°F41°F31°F5.3"
February26°F43°F33°F3.7"
March38°F57°F46°F4.5"
April47°F69°F57°F8.3"
May56°F77°F66°F6.2"
June65°F86°F75°F8.8"
July67°F88°F77°F7.5"
August65°F87°F75°F7.1"
September58°F81°F68°F8.8"
October47°F70°F57°F6.4"
November36°F57°F45°F7.2"
December29°F45°F36°F5.8"

Did you know?

  • The highest monthly average temperature in Clay City for July is 77 degrees.
  • The lowest monthly average temperature in Clay City for January is 31 degrees.
  • The most monthly precipitation in Clay City occurs in September with 8.8 inches.
  • The air quality index in Clay City is 25% better than the national average.
  • The pollution index in Clay City is 90% better than the national average.

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Compare Clay City, IL Weather To Other Cities

Clay City 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.
IndexClay CityIllinoisNational
Air quality index374150
Pollution index500,0043,347,2955,066,862

Clay City air quality information

MeasurementTotal
Days measured214
Days with good air quality201
Days with moderate air quality13
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Clay City air quality information

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

Average monthly Clay City temperature with heat index

Clay City monthly precipitation with daily maximum

Clay City monthly snow depth with daily maximum

Clay City monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Olney, IL8,9313334%
Louisville, IL1,0843726%
Sailor Springs, IL993726%
Flora, IL4,9403726%
Iola, IL1483726%
Clay City, IL8243726%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Elmwood, WI8243628%
Garnavillo, IA8243236%
Gilbert, SC8244216%
Hartford, IA8244118%
Oxford, NE8241962%
Clay City, IL8243726%
Source: The Clay City, 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.