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.

Mostly Cloudy

26°F

-3°C

Humidity 84%
Wind Speed NE 5 mph
Barometer 30.28 in (1026.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 7 Feb 1:54 am CST
Extended Forecast for

Forsyth IL

  • Overnight

    Overnight: Clear, with a low around 13. Wind chill values between 4 and 9. North wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 13 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 28. Wind chill values between 3 and 13. North northeast wind 5 to 7 mph becoming south southeast in the afternoon.

    High: 28 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear during the early evening, then becoming mostly cloudy, with a low around 20. South southeast wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39. South southeast wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 24. East southeast wind 6 to 8 mph.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 50. South southwest wind 6 to 8 mph.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34. South wind around 8 mph.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

Detailed Forecast

Overnight
Clear, with a low around 13. Wind chill values between 4 and 9. North wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 28. Wind chill values between 3 and 13. North northeast wind 5 to 7 mph becoming south southeast in the afternoon.
Saturday Night
Mostly clear during the early evening, then becoming mostly cloudy, with a low around 20. South southeast wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 39. South southeast wind 9 to 14 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 24. East southeast wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 50. South southwest wind 6 to 8 mph.
Monday Night
Mostly clear, with a low around 34. South wind around 8 mph.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 59.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of rain before noon. Partly sunny, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly cloudy, with a high near 40.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 41.
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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:
9:37 pm CST Feb 6, 2026
Forecast Valid:
2am CST Feb 7, 2026-6pm CST Feb 13, 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