TODAY AUG19
TEMPERATURE84
HUMIDITY65
PRESSURE29.96
WIND COND.50 5.8
  • 8568Sun
  • 7966Mon70%70%
  • 7858Tue30%
  • 7656Wed
  • 8058Thu
daynightWeather update from Decatur Airport at

Bethany 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°F38°F31°F6.8"
February23°F37°F29°F3.4"
March35°F56°F45°F3.0"
April43°F65°F54°F4.2"
May54°F78°F66°F3.1"
June64°F86°F75°F8.1"
July65°F86°F76°F4.0"
August68°F89°F78°F3.9"
September59°F85°F72°F7.7"
October49°F71°F60°F7.1"
November37°F56°F45°F6.1"
December24°F37°F30°F2.5"

Did you know?

  • The highest monthly average temperature in Bethany for August is 78 degrees.
  • The lowest monthly average temperature in Bethany for February is 29 degrees.
  • The most monthly precipitation in Bethany occurs in June with 8.1 inches.
  • The air quality index in Bethany is 21% better than the national average.
  • The pollution index in Bethany is 86% better than the national average.

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Compare Bethany, IL Weather To Other Cities

Bethany 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.
IndexBethanyIllinoisNational
Air quality index394150
Pollution index703,2183,347,2955,066,862

Bethany air quality information

MeasurementTotal
Days measured365
Days with good air quality293
Days with moderate air quality72
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Bethany air quality information

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

Average monthly Bethany temperature with heat index

Bethany monthly precipitation with daily maximum

Bethany monthly snow depth with daily maximum

Bethany monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Atwood, IL1,1063628%
Windsor village, IL9653726%
Windsor, IL1,4603726%
Gays, IL2933726%
Allenville, IL1693922%
Bethany, IL1,2753922%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Boonville, NC1,2754118%
Lewiston, MI1,2753628%
Culver, IN1,275512%
The Pinehills, MA1,2753334%
Cottonwood Shores, TX1,2754118%
Bethany, IL1,2753922%
Source: The Bethany, 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.