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Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

64°F

18°C

Humidity 84%
Wind Speed SW 8 mph
Barometer 29.97 in (1014.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 12 Oct 5:54 am CDT
Extended Forecast for

4 Miles SSE Bethany IL

  • Columbus Day

    Columbus Day: Partly sunny, then gradually becoming sunny, with a high near 90. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 90 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 69. South southwest wind 7 to 9 mph, with gusts as high as 17 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. Southwest wind 9 to 11 mph, with gusts as high as 17 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. South southwest wind around 6 mph.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers. High near 81. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 61. Northeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 61 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 77. East northeast wind 6 to 9 mph becoming west southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 62. Breezy.

    High: 62 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Partly sunny, then gradually becoming sunny, with a high near 90. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 69. South southwest wind 7 to 9 mph, with gusts as high as 17 mph.
Tuesday
Sunny, with a high near 92. Southwest wind 9 to 11 mph, with gusts as high as 17 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. South southwest wind around 6 mph.
Wednesday
Showers. High near 81. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 61. Northeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 77. East northeast wind 6 to 9 mph becoming west southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 62. Breezy.
Friday Night
Mostly clear, with a low around 35.
Saturday
Sunny, with a high near 60.
Saturday Night
Clear, with a low around 34.
Sunday
Sunny, with a high near 67.
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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:
6:36 am CDT Oct 12, 2026
Forecast Valid:
6am CDT Oct 12, 2026-6pm CDT Oct 18, 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