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

14°F

-10°C

Humidity 61%
Wind Speed W 16 G 23 mph
Barometer 30.22 in (1024.5 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 17 Jan 10:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 10. Wind chill values between -4 and 1. West wind 10 to 15 mph, with gusts as high as 22 mph.

    Low: 10 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of flurries between 9am and noon, then a chance of snow after noon. Partly sunny, with a high near 25. Wind chill values between -3 and 7. South southwest wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    High: 25 °F

    Partly Sunny
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values between -7 and -17. Blustery, with a southwest wind 11 to 16 mph becoming west northwest 18 to 23 mph in the evening. Winds could gust as high as 34 mph.

    Low: 4 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 14. Wind chill values between -9 and -19. Blustery, with a west northwest wind 13 to 22 mph, with gusts as high as 33 mph.

    High: 14 °F

    Sunny and
    Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 6. West northwest wind 7 to 10 mph becoming southwest after midnight. Winds could gust as high as 16 mph.

    Low: 6 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. South wind 10 to 18 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 10. Wind chill values between -4 and 1. West wind 10 to 15 mph, with gusts as high as 22 mph.
Sunday
A chance of flurries between 9am and noon, then a chance of snow after noon. Partly sunny, with a high near 25. Wind chill values between -3 and 7. South southwest wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Sunday Night
A 20 percent chance of snow before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values between -7 and -17. Blustery, with a southwest wind 11 to 16 mph becoming west northwest 18 to 23 mph in the evening. Winds could gust as high as 34 mph.
M.L.King Day
Sunny, with a high near 14. Wind chill values between -9 and -19. Blustery, with a west northwest wind 13 to 22 mph, with gusts as high as 33 mph.
Monday Night
Mostly clear, with a low around 6. West northwest wind 7 to 10 mph becoming southwest after midnight. Winds could gust as high as 16 mph.
Tuesday
Mostly sunny, with a high near 29. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 23. South wind 10 to 18 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 36.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Sunny, with a high near 30.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 36.
Friday Night
A chance of snow. Mostly cloudy, with a low around 15.
Saturday
A chance of snow. Mostly cloudy, with a high near 24.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
9:36 pm CST Jan 17, 2026
Forecast Valid:
11pm CST Jan 17, 2026-6pm CST Jan 24, 2026
 
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Additional Resources

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Chance of Precipitation