TODAY JUN20
TEMPERATURE70
HUMIDITY100
PRESSURE29.93
WIND COND.250 11.4
  • 8267Thu50%60%
  • 7864Fri60%60%
  • 8267Sat20%
  • 8467Sun50%30%
  • 8569Mon
daynightWeather update from St. Louis Regional Airport at

Grantfork 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
January-4°F72°F35°Fn/a
February3°F75°F33°Fn/a
March12°F82°F45°Fn/a
April23°F90°F56°Fn/a
May36°F91°F64°Fn/a
June52°F95°F75°Fn/a
July54°F102°F77°Fn/a
August55°F102°F77°Fn/a
September41°F95°F69°Fn/a
October27°F95°F56°Fn/a
November16°F81°F46°Fn/a
December1°F66°F35°Fn/a

Did you know?

  • The highest monthly average temperature in Grantfork for August is 77 degrees.
  • The lowest monthly average temperature in Grantfork for February is 33 degrees.
  • The most monthly precipitation in Grantfork occurs in January with 0 inches.
  • The air quality index in Grantfork is 20% worse than the national average.
  • The pollution index in Grantfork is 87% better than the national average.

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Compare Grantfork, IL Weather To Other Cities

Grantfork 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.
IndexGrantforkIllinoisNational
Air quality index604150
Pollution index647,2803,347,2955,066,862

Grantfork air quality information

MeasurementTotal
Days measured365
Days with good air quality99
Days with moderate air quality231
Days w/ poor A.Q. for sensitive groups33
Days with unhealthy air quality2

Grantfork air quality information

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

Average monthly Grantfork temperature with heat index

Grantfork monthly precipitation with daily maximum

Grantfork monthly snow depth with daily maximum

Grantfork monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Greenville, IL6,8333922%
Breese, IL4,5903922%
Donnellson, IL1766020%
Holiday Shores, IL2,7856020%
Old Ripley, IL1036020%
Grantfork, IL3606020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Orchid, FL3603432%
Nichols, IA3605612%
Bennett, IA3605612%
Downsville, MD3604118%
Freeburn, KY360295490%
Grantfork, IL3606020%
Source: The Grantfork, 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.