Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

76°F

24°C

Humidity 85%
Wind Speed SW 7 mph
Barometer 29.89 in (1011.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 16 Jul 5:54 pm CDT
Extended Forecast for

Decatur Airport IL

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 2am.  Mostly cloudy, with a low around 72. Southwest wind 5 to 13 mph, with gusts as high as 22 mph.

    Low: 72 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly cloudy, with a high near 82. Northwest wind 8 to 10 mph.

    High: 82 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 66. North wind 6 to 8 mph becoming east northeast after midnight.

    Low: 66 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 84. East northeast wind 6 to 8 mph becoming south southeast in the afternoon.

    High: 84 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 73. South southeast wind around 6 mph.

    Low: 73 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely.  Partly sunny, with a high near 89. Southwest wind 7 to 9 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 74. South southwest wind around 6 mph.

    Low: 74 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 72. Southwest wind 5 to 13 mph, with gusts as high as 22 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 82. Northwest wind 8 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. North wind 6 to 8 mph becoming east northeast after midnight.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. East northeast wind 6 to 8 mph becoming south southeast in the afternoon.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. South southeast wind around 6 mph.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 89. Southwest wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South southwest wind around 6 mph.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur Airport IL
 39.84°N 88.88°W (Elev. 650 ft)
6:11 pm CDT Jul 16, 2025
6pm CDT Jul 16, 2025-6pm CDT Jul 23, 2025
 
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Additional Resources

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Hourly Weather Forecast

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