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

23°F

-5°C

Humidity 78%
Wind Speed SW 14 mph
Barometer 30.15 in (1021.9 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 2 Feb 12:54 am CST
Extended Forecast for

4 Miles N Forsyth IL

  • Overnight

    Overnight: A 20 percent chance of snow between 4am and 5am. Cloudy, with a low around 20. South southwest wind around 8 mph, with gusts as high as 16 mph.

    Low: 20 °F

    Slight Chance
    Snow

  • Monday

    Monday: Mostly cloudy, with a high near 30. West northwest wind 7 to 10 mph, with gusts as high as 15 mph.

    High: 30 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17. West northwest wind around 5 mph becoming calm.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 29. Northeast wind 6 to 9 mph.

    High: 29 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 10. North northeast wind around 7 mph.

    Low: 10 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 26. North wind around 6 mph becoming west northwest in the afternoon.

    High: 26 °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 33.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow between 4am and 5am. Cloudy, with a low around 20. South southwest wind around 8 mph, with gusts as high as 16 mph.
Monday
Mostly cloudy, with a high near 30. West northwest wind 7 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 17. West northwest wind around 5 mph becoming calm.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 29. Northeast wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 10. North northeast wind around 7 mph.
Wednesday
Mostly sunny, with a high near 26. North wind around 6 mph becoming west northwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 9. West wind around 6 mph.
Thursday
Partly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 37.
Friday Night
Partly cloudy, with a low around 14.
Saturday
Mostly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Partly sunny, with a high near 35.
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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:
12:36 am CST Feb 2, 2026
Forecast Valid:
1am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
Forecast Discussion
 
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Additional Resources

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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