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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

71°F

22°C

Humidity 39%
Wind Speed S 8 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 6 Oct 5:54 pm CDT
Extended Forecast for

6 Miles WSW Bethany IL

  • Tonight

    Tonight: Clear, with a low around 54. South southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    Low: 54 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Southwest wind 7 to 10 mph, with gusts as high as 15 mph.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. North northwest wind 3 to 8 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. North wind around 5 mph becoming light and variable in the evening.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. East wind 5 to 9 mph becoming south southeast in the afternoon.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. South southeast wind around 8 mph.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 54. South southwest wind 6 to 8 mph, with gusts as high as 15 mph.
Wednesday
Sunny, with a high near 85. Southwest wind 7 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 78. North northwest wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 47. North wind around 5 mph becoming light and variable in the evening.
Friday
Sunny, with a high near 81. East wind 5 to 9 mph becoming south southeast in the afternoon.
Friday Night
Mostly clear, with a low around 54. South southeast wind around 8 mph.
Saturday
Sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 55.
Columbus Day
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
A chance of showers. Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WSW Bethany IL
 39.62°N 88.84°W (Elev. 689 ft)
Last Update:
4:36 pm CDT Oct 6, 2026
Forecast Valid:
6pm CDT Oct 6, 2026-6pm CDT Oct 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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