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

24°F

-4°C

Humidity 91%
Wind Speed NE 9 mph
Barometer 30.16 in (1022.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 3 Feb 2:54 am CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • Overnight

    Overnight: Cloudy, with a low around 21. East northeast wind around 5 mph.

    Low: 21 °F

    Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 30. North wind 6 to 10 mph.

    High: 30 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 11. Wind chill values between 4 and 9. North wind around 7 mph.

    Low: 11 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 26. Wind chill values between 4 and 14. North wind around 6 mph.

    High: 26 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 9. Light and variable wind becoming west southwest around 6 mph after midnight.

    Low: 9 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 33. Southwest wind 6 to 13 mph, with gusts as high as 18 mph.

    High: 33 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. South southwest wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 21. East northeast wind around 5 mph.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 30. North wind 6 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 11. Wind chill values between 4 and 9. North wind around 7 mph.
Wednesday
Partly sunny, with a high near 26. Wind chill values between 4 and 14. North wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 9. Light and variable wind becoming west southwest around 6 mph after midnight.
Thursday
Mostly cloudy, with a high near 33. Southwest wind 6 to 13 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 26. South southwest wind 11 to 14 mph becoming west after midnight. Winds could gust as high as 21 mph.
Friday
Mostly sunny, with a high near 41.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
Last Update:
3:37 am CST Feb 3, 2026
Forecast Valid:
3am CST Feb 3, 2026-6pm CST Feb 9, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation