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

80°F

27°C

Humidity 74%
Wind Speed Calm
Barometer 30.08 in (1018.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 7 Aug 10:54 am CDT
Extended Forecast for

Bethany IL

  • Today

    Today: Isolated showers and thunderstorms before noon. Mostly sunny, with a high near 85. Southwest wind around 8 mph. Chance of precipitation is 20%.

    High: 85 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southwest wind 5 to 8 mph, with gusts as high as 16 mph.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86. West wind around 7 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Light and variable wind.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 88. South wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. South wind around 10 mph, with gusts as high as 16 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 90. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Isolated showers and thunderstorms before noon. Mostly sunny, with a high near 85. Southwest wind around 8 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 68. Southwest wind 5 to 8 mph, with gusts as high as 16 mph.
Saturday
Mostly sunny, with a high near 86. West wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 66. Light and variable wind.
Sunday
Mostly sunny, with a high near 88. South wind 5 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 72. South wind around 10 mph, with gusts as high as 16 mph.
Monday
Sunny, with a high near 90. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Monday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 74.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
Tuesday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A chance of showers. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bethany IL
 39.64°N 88.75°W (Elev. 650 ft)
Last Update:
8:51 am CDT Aug 7, 2026
Forecast Valid:
11am CDT Aug 7, 2026-6pm CDT Aug 13, 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