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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

12°F

-11°C

Humidity 61%
Wind Speed NW 7 mph
Barometer 30.36 in (1029.7 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 27 Jan 7:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

Cold Weather Advisory January 27, 09:00pm until January 28, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Mostly clear, with a low around -7. Wind chill values between -10 and -20. West southwest wind around 7 mph.

    Low: -7 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 20. Wind chill values between -9 and -19. West wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 20 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 0. Wind chill values between -5 and -10. West wind 5 to 7 mph becoming north after midnight.

    Low: 0 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 15. Wind chill values between -10 and zero. North wind around 6 mph.

    High: 15 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -2. North wind 5 to 7 mph.

    Low: -2 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 14. North wind 8 to 10 mph, with gusts as high as 15 mph.

    High: 14 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 0. Northwest wind 8 to 11 mph, with gusts as high as 17 mph.

    Low: 0 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 1.

    Low: 1 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around -7. Wind chill values between -10 and -20. West southwest wind around 7 mph.
Wednesday
Mostly sunny, with a high near 20. Wind chill values between -9 and -19. West wind 6 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
Increasing clouds, with a low around 0. Wind chill values between -5 and -10. West wind 5 to 7 mph becoming north after midnight.
Thursday
Mostly cloudy, with a high near 15. Wind chill values between -10 and zero. North wind around 6 mph.
Thursday Night
Mostly cloudy, with a low around -2. North wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 14. North wind 8 to 10 mph, with gusts as high as 15 mph.
Friday Night
Partly cloudy, with a low around 0. Northwest wind 8 to 11 mph, with gusts as high as 17 mph.
Saturday
Mostly sunny, with a high near 17.
Saturday Night
Partly cloudy, with a low around 1.
Sunday
Partly sunny, with a high near 21.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 11.
Monday
Mostly cloudy, with a high near 27.
Monday Night
Mostly cloudy, with a low around 12.
Tuesday
Partly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
6:36 pm CST Jan 27, 2026
Forecast Valid:
8pm CST Jan 27, 2026-6pm CST Feb 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation