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.

Fair

14°F

-10°C

Humidity 36%
Wind Speed W 16 G 24 mph
Barometer 30.36 in (1029.5 mb)
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 19 Jan 3:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

  • Tonight

    Tonight: Increasing clouds, with a low around 6. Wind chill values between -1 and -6. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 6 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between -6 and 4. South southwest wind 7 to 14 mph, with gusts as high as 20 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a temperature rising to around 32 by 5am. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 29 mph.

    Low: 23 °F⇑

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 37. Breezy, with a west wind 13 to 20 mph, with gusts as high as 28 mph.

    High: 37 °F

    Becoming
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18. West northwest wind 10 to 16 mph, with gusts as high as 24 mph.

    Low: 18 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 29. West wind 8 to 14 mph, with gusts as high as 18 mph.

    High: 29 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 2. North northwest wind 7 to 14 mph, with gusts as high as 20 mph.

    Low: 2 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 9.

    High: 9 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -4.

    Low: -4 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 6. Wind chill values between -1 and -6. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between -6 and 4. South southwest wind 7 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
Increasing clouds, with a temperature rising to around 32 by 5am. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 29 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 37. Breezy, with a west wind 13 to 20 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 18. West northwest wind 10 to 16 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 29. West wind 8 to 14 mph, with gusts as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 2. North northwest wind 7 to 14 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy and cold, with a high near 9.
Friday Night
Mostly cloudy, with a low around -4.
Saturday
Partly sunny and cold, with a high near 10.
Saturday Night
Partly cloudy, with a low around 0.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 6.
Monday
Mostly sunny, with a high near 26.
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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:
3:36 pm CST Jan 19, 2026
Forecast Valid:
4pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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