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

61°F

16°C

Humidity 87%
Wind Speed NE 3 mph
Barometer 29.94 in (1013.2 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 29 Jul 4:54 am CDT
Extended Forecast for

4 Miles SSE Bethany IL

  • Today

    Today: Sunny, with a high near 83. North northeast wind 5 to 8 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. Northeast wind 3 to 6 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63. Light southeast wind.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Showers likely, mainly after 1pm. Partly sunny, with a high near 79. South wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers, with thunderstorms also possible after 7pm. Low around 64. South southeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Southeast wind 11 to 13 mph becoming north in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 83. North northeast wind 5 to 8 mph.
Tonight
Mostly clear, with a low around 59. Northeast wind 3 to 6 mph.
Thursday
Sunny, with a high near 84. Light and variable wind.
Thursday Night
Partly cloudy, with a low around 63. Light southeast wind.
Friday
Showers likely, mainly after 1pm. Partly sunny, with a high near 79. South wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers, with thunderstorms also possible after 7pm. Low around 64. South southeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Southeast wind 11 to 13 mph becoming north in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 62.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 62.
Monday
A chance of showers and thunderstorms. Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 63.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Bethany IL
 39.59°N 88.7°W (Elev. 676 ft)
Last Update:
5:21 am CDT Jul 29, 2026
Forecast Valid:
5am CDT Jul 29, 2026-6pm CDT Aug 4, 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