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

24°F

-4°C

Humidity 75%
Wind Speed SW 10 mph
Barometer 30.14 in (1021.6 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 2 Feb 4:54 am CST
Extended Forecast for

Forsyth IL

  • Today

    Today: Mostly cloudy, with a high near 30. West northwest wind 6 to 10 mph, with gusts as high as 15 mph.

    High: 30 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of snow after 3am. Mostly cloudy, with a low around 19. West wind around 5 mph becoming calm.

    Low: 19 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A 30 percent chance of snow before noon. Cloudy, then gradually becoming mostly sunny, with a high near 29. North wind 6 to 10 mph.

    High: 29 °F

    Chance Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 8. Wind chill values between -1 and 4. North northeast wind 5 to 7 mph.

    Low: 8 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 25. North wind around 6 mph becoming west in the afternoon.

    High: 25 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 9. West wind around 6 mph.

    Low: 9 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 32. Southwest wind 6 to 13 mph, with gusts as high as 17 mph.

    High: 32 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 30. West northwest wind 6 to 10 mph, with gusts as high as 15 mph.
Tonight
A 20 percent chance of snow after 3am. Mostly cloudy, with a low around 19. West wind around 5 mph becoming calm.
Tuesday
A 30 percent chance of snow before noon. Cloudy, then gradually becoming mostly sunny, with a high near 29. North wind 6 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 8. Wind chill values between -1 and 4. North northeast wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 25. North wind around 6 mph becoming west in the afternoon.
Wednesday Night
Partly cloudy, with a low around 9. West wind around 6 mph.
Thursday
Partly sunny, with a high near 32. Southwest wind 6 to 13 mph, with gusts as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 38.
Friday Night
Partly cloudy, with a low around 14.
Saturday
Mostly sunny, with a high near 28.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Mostly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
Last Update:
3:44 am CST Feb 2, 2026
Forecast Valid:
5am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
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