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.

Fair and Breezy

29°F

-2°C

Humidity 66%
Wind Speed NW 23 G 38 mph
Barometer 30.29 in (1026.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 10 Nov 8:54 am CST
Extended Forecast for

4 Miles WSW Sullivan IL

  • Today

    Today: Mostly sunny, with a high near 37. North northwest wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 37 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 20. West northwest wind 5 to 8 mph becoming southwest after midnight. Winds could gust as high as 15 mph.

    Low: 20 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: Cloudy, then gradually becoming mostly sunny, with a high near 47. South southwest wind 7 to 15 mph, with gusts as high as 29 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 35. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 58. West northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 58 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. West northwest wind around 6 mph becoming calm in the evening.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 59. Calm wind becoming south around 6 mph in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 37. North northwest wind 10 to 17 mph, with gusts as high as 29 mph.
Tonight
Increasing clouds, with a low around 20. West northwest wind 5 to 8 mph becoming southwest after midnight. Winds could gust as high as 15 mph.
Veterans Day
Cloudy, then gradually becoming mostly sunny, with a high near 47. South southwest wind 7 to 15 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 35. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 58. West northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 31. West northwest wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 59. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 51.
Sunday
A chance of rain. Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Sullivan IL
 39.57°N 88.67°W (Elev. 676 ft)
Last Update:
5:11 am CST Nov 10, 2025
Forecast Valid:
9am CST Nov 10, 2025-6pm CST Nov 16, 2025
 
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Additional Resources

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Chance of Precipitation