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

24°F

-4°C

Humidity 71%
Wind Speed W 7 mph
Barometer 30.37 in (1029.0 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 28 Nov 12:54 am CST
Extended Forecast for

3 Miles WSW Forsyth IL

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

  • Overnight

    Overnight: Clear, with a low around 19. West northwest wind around 9 mph, with gusts as high as 16 mph.

    Low: 19 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming calm in the afternoon.

    High: 34 °F

    Sunny

  • Friday Night

    Friday Night: Snow, mainly after 3am. Low around 24. Light south wind becoming southeast 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 24 °F

    Mostly Cloudy
    then Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 33. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 33 °F

    Heavy Snow
    and Breezy

  • Saturday Night

    Saturday Night: Snow, mainly before midnight. Low around 25. Blustery, with a south southeast wind 15 to 22 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 25 °F

    Snow then
    Chance Snow
    and Blustery

  • Sunday

    Sunday: Mostly cloudy, with a high near 27. Blustery, with a west northwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 27 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 9. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 9 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 22.

    High: 22 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13.

    Low: 13 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Clear, with a low around 19. West northwest wind around 9 mph, with gusts as high as 16 mph.
Friday
Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Friday Night
Snow, mainly after 3am. Low around 24. Light south wind becoming southeast 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday
Snow. The snow could be heavy at times. High near 33. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Saturday Night
Snow, mainly before midnight. Low around 25. Blustery, with a south southeast wind 15 to 22 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Sunday
Mostly cloudy, with a high near 27. Blustery, with a west northwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 9. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Mostly cloudy, with a high near 22.
Monday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Partly sunny, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Mostly cloudy, with a high near 29.
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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:
12:36 am CST Nov 28, 2025
Forecast Valid:
1am CST Nov 28, 2025-6pm CST Dec 4, 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