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.

Fog/Mist

69°F

21°C

Humidity 96%
Wind Speed E 10 mph
Barometer 29.95 in (1013.8 mb)
Dewpoint 68°F (20°C)
Visibility 6.00 mi
Last update 26 Jun 11:54 pm CDT
Extended Forecast for

2 Miles WSW Decatur IL

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 1am. Cloudy, with a low around 63. Northeast wind around 6 mph.

    Low: 63 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. East wind 3 to 5 mph.

    High: 80 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly between 2am and 5am. Partly cloudy, with a low around 67. East wind 3 to 5 mph.

    Low: 67 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 89. East southeast wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 89 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 7 to 10 mph, with gusts as high as 17 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South wind 7 to 10 mph, with gusts as high as 17 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74.

    Low: 74 °F

    Clear

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 1am. Cloudy, with a low around 63. Northeast wind around 6 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. East wind 3 to 5 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly between 2am and 5am. Partly cloudy, with a low around 67. East wind 3 to 5 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 89. East southeast wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly clear, with a low around 73. South wind 7 to 10 mph, with gusts as high as 17 mph.
Monday
Sunny, with a high near 93. South wind 8 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 75. South wind 7 to 10 mph, with gusts as high as 17 mph.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Clear, with a low around 74.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny and hot, with a high near 95.
Thursday Night
Mostly clear, with a low around 74.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Decatur IL
 39.84°N 88.97°W (Elev. 676 ft)
Last Update:
11:46 pm CDT Jun 26, 2026
Forecast Valid:
12am CDT Jun 27, 2026-6pm CDT Jul 3, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation