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

38°F

3°C

Humidity 55%
Wind Speed Calm
Barometer 30.29 in (1026.4 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 11 Feb 6:54 pm CST
Extended Forecast for

Bethany IL

  • Tonight

    Tonight: Increasing clouds, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.

    Low: 30 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 47. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 47 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. South southeast wind 3 to 6 mph.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 51. South wind 6 to 10 mph, with gusts as high as 15 mph.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 31. South wind around 6 mph.

    Low: 31 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 51. South southeast wind 5 to 7 mph.

    High: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 37. East southeast wind 6 to 8 mph becoming northeast after midnight.

    Low: 37 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 47. Calm wind becoming south southwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 28. South southeast wind 3 to 6 mph.
Friday
Sunny, with a high near 51. South wind 6 to 10 mph, with gusts as high as 15 mph.
Friday Night
Increasing clouds, with a low around 31. South wind around 6 mph.
Saturday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 51. South southeast wind 5 to 7 mph.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37. East southeast wind 6 to 8 mph becoming northeast after midnight.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 32.
Washington's Birthday
Partly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly cloudy, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 48.
Wednesday
A chance of rain. Mostly sunny, with a high near 63. Breezy.
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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:
7:21 pm CST Feb 11, 2026
Forecast Valid:
7pm CST Feb 11, 2026-6pm CST Feb 18, 2026
 
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