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.

Overcast

65°F

18°C

Humidity 54%
Wind Speed NW 9 mph
Barometer 29.92 in (1012.7 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 May 1:54 am CDT
Extended Forecast for

3 Miles SE Bethany IL

  • Overnight

    Overnight: Mostly clear, with a low around 54. Northwest wind around 8 mph, with gusts as high as 18 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69. Northwest wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43. North wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71. East northeast wind around 5 mph becoming calm in the morning.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Increasing clouds, with a low around 52. South southeast wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 52 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers before 1pm. Partly sunny, with a high near 77. South southeast wind 14 to 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, with thunderstorms also possible after 10pm. Partly cloudy, with a low around 61. South wind 7 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Northwest wind around 8 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 69. Northwest wind 9 to 17 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly clear, with a low around 43. North wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 71. East northeast wind around 5 mph becoming calm in the morning.
Thursday Night
A 40 percent chance of showers after 1am. Increasing clouds, with a low around 52. South southeast wind 6 to 10 mph, with gusts as high as 18 mph.
Friday
A 50 percent chance of showers before 1pm. Partly sunny, with a high near 77. South southeast wind 14 to 17 mph, with gusts as high as 26 mph.
Friday Night
A chance of showers, with thunderstorms also possible after 10pm. Partly cloudy, with a low around 61. South wind 7 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.
Saturday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 68.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68.
Tuesday
Showers likely. Partly sunny, with a high near 79.
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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:
1:26 am CDT May 13, 2026
Forecast Valid:
2am CDT May 13, 2026-6pm CDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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