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

28°F

-2°C

Humidity 47%
Wind Speed NW 17 G 25 mph
Barometer 30.20 in (1023.2 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 21 Jan 11:54 pm CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • Overnight

    Overnight: Mostly clear, with a low around 19. West northwest wind 7 to 17 mph, with gusts as high as 32 mph.

    Low: 19 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 33. West wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 0. Wind chill values between -5 and -15. West wind 5 to 10 mph becoming north northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph.

    Low: 0 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 7. Wind chill values between -10 and -19. North wind 11 to 17 mph, with gusts as high as 24 mph.

    High: 7 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -2. North northeast wind around 13 mph, with gusts as high as 20 mph.

    Low: -2 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow after noon. Cloudy, with a high near 12. Northeast wind around 14 mph, with gusts as high as 20 mph.

    High: 12 °F

    Cloudy then
    Chance Snow

  • Saturday Night

    Saturday Night: Snow likely. Cloudy, with a low around 7. Northeast wind around 11 mph, with gusts as high as 17 mph. Chance of precipitation is 70%.

    Low: 7 °F

    Snow Likely

  • Sunday

    Sunday: A 50 percent chance of snow. Mostly cloudy, with a high near 16.

    High: 16 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -2.

    Low: -2 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 19. West northwest wind 7 to 17 mph, with gusts as high as 32 mph.
Thursday
Mostly sunny, with a high near 33. West wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 0. Wind chill values between -5 and -15. West wind 5 to 10 mph becoming north northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph.
Friday
Mostly cloudy and cold, with a high near 7. Wind chill values between -10 and -19. North wind 11 to 17 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around -2. North northeast wind around 13 mph, with gusts as high as 20 mph.
Saturday
A 50 percent chance of snow after noon. Cloudy, with a high near 12. Northeast wind around 14 mph, with gusts as high as 20 mph.
Saturday Night
Snow likely. Cloudy, with a low around 7. Northeast wind around 11 mph, with gusts as high as 17 mph. Chance of precipitation is 70%.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 16.
Sunday Night
Mostly cloudy, with a low around -2.
Monday
Mostly sunny, with a high near 12.
Monday Night
Mostly clear, with a low around 2.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Partly sunny, with a high near 22.
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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:
11:51 pm CST Jan 21, 2026
Forecast Valid:
12am CST Jan 22, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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