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.

Overcast

40°F

4°C

Humidity 77%
Wind Speed NW 18 G 26 mph
Barometer 30.04 in (1017.4 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 11 Mar 5:54 pm CDT
Extended Forecast for

3 Miles SE Bethany IL

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 28. Blustery, with a north northwest wind 16 to 21 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 32 mph.

    Low: 28 °F

    Decreasing
    Clouds and
    Blustery then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 49. West wind 6 to 11 mph, with gusts as high as 17 mph.

    High: 49 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 40. Breezy, with a south wind 10 to 15 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 36 mph.

    Low: 40 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 54. Breezy, with a southwest wind 16 to 22 mph becoming west northwest in the afternoon. Winds could gust as high as 32 mph.

    High: 54 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 32. West northwest wind 6 to 9 mph becoming north northeast after midnight. Winds could gust as high as 16 mph.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 52. East southeast wind 7 to 11 mph, with gusts as high as 16 mph.

    High: 52 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 44. East wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 44 °F

    Cloudy

  • Sunday

    Sunday: Rain, mainly after 1pm. High near 61. Breezy. Chance of precipitation is 80%.

    High: 61 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: A chance of rain and snow before 1am. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 50%.

    Low: 21 °F

    Chance
    Rain/Snow and
    Blustery

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around 28. Blustery, with a north northwest wind 16 to 21 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 32 mph.
Thursday
Sunny, with a high near 49. West wind 6 to 11 mph, with gusts as high as 17 mph.
Thursday Night
Mostly cloudy, with a low around 40. Breezy, with a south wind 10 to 15 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 36 mph.
Friday
Partly sunny, with a high near 54. Breezy, with a southwest wind 16 to 22 mph becoming west northwest in the afternoon. Winds could gust as high as 32 mph.
Friday Night
Mostly cloudy, with a low around 32. West northwest wind 6 to 9 mph becoming north northeast after midnight. Winds could gust as high as 16 mph.
Saturday
Mostly cloudy, with a high near 52. East southeast wind 7 to 11 mph, with gusts as high as 16 mph.
Saturday Night
Cloudy, with a low around 44. East wind 10 to 15 mph, with gusts as high as 24 mph.
Sunday
Rain, mainly after 1pm. High near 61. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 29. Blustery.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Bethany IL
 39.61°N 88.7°W (Elev. 650 ft)
Last Update:
6:12 pm CDT Mar 11, 2026
Forecast Valid:
6pm CDT Mar 11, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation