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

29°F

-2°C

Humidity 72%
Wind Speed SE 10 mph
Barometer 30.36 in (1028.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 28 Nov 10:54 pm CST
Extended Forecast for

3 Miles WSW Forsyth IL

Winter Storm Warning November 29, 12:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • Tonight

    Tonight: Snow, mainly after 4am. Low around 24. Southeast wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of around an inch possible.

    Low: 24 °F

    Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 35. Breezy, with a south southeast wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 35 °F

    Heavy Snow
    and Breezy

  • Saturday Night

    Saturday Night: Rain and snow, becoming all snow after 11pm. Low around 24. Breezy, with a south wind 18 to 23 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Breezy.
    Rain/Snow
    then Chance
    Snow

  • Sunday

    Sunday: A 30 percent chance of snow before noon. Mostly cloudy, with a high near 27. Breezy, with a west northwest wind 14 to 23 mph, with gusts as high as 29 mph.

    High: 27 °F

    Chance Snow
    and Breezy
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 12. West northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.

    Low: 12 °F

    Mostly Cloudy

  • Monday

    Monday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 25. East wind 3 to 5 mph.

    High: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Monday Night

    Monday Night: Snow likely before midnight. Mostly cloudy, with a low around 14. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 60%.

    Low: 14 °F

    Snow Likely
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 4am. Low around 24. Southeast wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of around an inch possible.
Saturday
Snow. The snow could be heavy at times. High near 35. Breezy, with a south southeast wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Saturday Night
Rain and snow, becoming all snow after 11pm. Low around 24. Breezy, with a south wind 18 to 23 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Sunday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 27. Breezy, with a west northwest wind 14 to 23 mph, with gusts as high as 29 mph.
Sunday Night
Mostly cloudy, with a low around 12. West northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 16 mph.
Monday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 25. East wind 3 to 5 mph.
Monday Night
Snow likely before midnight. Mostly cloudy, with a low around 14. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 13.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 12.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Partly sunny, with a high near 31.
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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:
8:37 pm CST Nov 28, 2025
Forecast Valid:
11pm CST Nov 28, 2025-6pm CST Dec 5, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation