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

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Mostly Cloudy

24°F

-4°C

Humidity 55%
Wind Speed Calm
Barometer 30.25 in (1025.3 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 17 Mar 1:54 pm CDT
Extended Forecast for

Bethany IL

  • This Afternoon

    This Afternoon: A chance of flurries. Partly sunny, with a high near 28. West southwest wind around 8 mph.

    High: 28 °F

    Chance
    Flurries

  • Tonight

    Tonight: Snow, mainly before 5am. Low around 24. South southeast wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Snow Likely
    then Snow

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 53. South wind 9 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 53 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 37. West northwest wind around 6 mph becoming south after midnight.

    Low: 37 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 64. South wind 7 to 9 mph becoming west in the afternoon.

    High: 64 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. North northeast wind around 6 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66. East wind 5 to 9 mph becoming west southwest in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of flurries. Partly sunny, with a high near 28. West southwest wind around 8 mph.
Tonight
Snow, mainly before 5am. Low around 24. South southeast wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 53. South wind 9 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Increasing clouds, with a low around 37. West northwest wind around 6 mph becoming south after midnight.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 64. South wind 7 to 9 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 38. North northeast wind around 6 mph.
Friday
Mostly sunny, with a high near 66. East wind 5 to 9 mph becoming west southwest in the afternoon.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 50.
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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:
1:26 pm CDT Mar 17, 2026
Forecast Valid:
2pm CDT Mar 17, 2026-6pm CDT Mar 23, 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