National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

10°F

-12°C

Humidity 92%
Wind Speed N 6 mph
Barometer 30.31 in (1027.4 mb)
Dewpoint 8°F (-13°C)
Visibility 8.00 mi
Wind Chill0°F (-18°C)
Last update 4 Feb 2:54 am CST
Extended Forecast for

4 Miles N Forsyth IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 9. Wind chill values between -1 and 4. Northeast wind around 6 mph.

    Low: 9 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 26. Wind chill values between 1 and 11. North northeast wind around 7 mph.

    High: 26 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11. Wind chill values between 3 and 8. Light and variable wind becoming southwest around 6 mph after midnight.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 32. Wind chill values between zero and 10. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 32 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 42. Northwest wind 14 to 18 mph, with gusts as high as 26 mph.

    High: 42 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19. Northwest wind 7 to 14 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.

    Low: 19 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 9. Wind chill values between -1 and 4. Northeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 26. Wind chill values between 1 and 11. North northeast wind around 7 mph.
Wednesday Night
Partly cloudy, with a low around 11. Wind chill values between 3 and 8. Light and variable wind becoming southwest around 6 mph after midnight.
Thursday
Mostly cloudy, with a high near 32. Wind chill values between zero and 10. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 24. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 42. Northwest wind 14 to 18 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 19. Northwest wind 7 to 14 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 32.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 52.
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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:
2:37 am CST Feb 4, 2026
Forecast Valid:
3am CST Feb 4, 2026-6pm CST Feb 10, 2026
 
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Additional Resources

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