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.

Overcast

26°F

-3°C

Humidity 55%
Wind Speed NW 14 G 23 mph
Barometer 30.01 in (1016.7 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 14 Jan 4:54 pm CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • Tonight

    Tonight: Mostly clear, with a low around 15. Wind chill values between 2 and 10. North northwest wind 11 to 18 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 28. Wind chill values between 2 and 12. Northwest wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.

    High: 28 °F

    Sunny

  • Thursday Night

    Thursday Night: Snow likely. Mostly cloudy, with a low around 23. South southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Snow Likely

  • Friday

    Friday: Mostly cloudy, with a high near 39. Breezy, with a west wind 14 to 20 mph, with gusts as high as 29 mph.

    High: 39 °F

    Mostly Cloudy
    and Breezy

  • Friday Night

    Friday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 15. West wind 14 to 17 mph, with gusts as high as 23 mph.

    Low: 15 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 20. West wind 15 to 18 mph, with gusts as high as 25 mph.

    High: 20 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 4. West northwest wind 11 to 14 mph, with gusts as high as 20 mph.

    Low: 4 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 19.

    High: 19 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 15. Wind chill values between 2 and 10. North northwest wind 11 to 18 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 28. Wind chill values between 2 and 12. Northwest wind 8 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.
Thursday Night
Snow likely. Mostly cloudy, with a low around 23. South southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Mostly cloudy, with a high near 39. Breezy, with a west wind 14 to 20 mph, with gusts as high as 29 mph.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 15. West wind 14 to 17 mph, with gusts as high as 23 mph.
Saturday
Mostly cloudy, with a high near 20. West wind 15 to 18 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 4. West northwest wind 11 to 14 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 19.
Sunday Night
Mostly cloudy, with a low around 9.
M.L.King Day
Mostly sunny, with a high near 19.
Monday Night
Mostly clear, with a low around 4.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Partly cloudy, with a low around 15.
Wednesday
Mostly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
Last Update:
3:36 pm CST Jan 14, 2026
Forecast Valid:
5pm CST Jan 14, 2026-6pm CST Jan 21, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation