National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

77°F

25°C

Humidity 82%
Wind Speed SE 5 mph
Barometer 30.19 in (1021.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Aug 8:54 pm CDT
Extended Forecast for

Bethany IL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 11pm and 3am. Partly cloudy, with a low around 67. Light southeast wind. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 89. South wind 3 to 6 mph.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69. South southeast wind 3 to 6 mph.

    Low: 69 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 89. South wind 5 to 8 mph.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 70. South southeast wind around 6 mph.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90. South wind 6 to 9 mph.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. South southeast wind around 7 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 11pm and 3am. Partly cloudy, with a low around 67. Light southeast wind. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 89. South wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 69. South southeast wind 3 to 6 mph.
Friday
Sunny, with a high near 89. South wind 5 to 8 mph.
Friday Night
Mostly clear, with a low around 70. South southeast wind around 6 mph.
Saturday
Sunny, with a high near 90. South wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 71. South southeast wind around 7 mph.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 88.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bethany IL
 39.64°N 88.75°W (Elev. 650 ft)
Last Update:
9:41 pm CDT Aug 6, 2025
Forecast Valid:
9pm CDT Aug 6, 2025-6pm CDT Aug 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation