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

10°F

-12°C

Humidity 48%
Wind Speed W 3 mph
Barometer 30.39 in (1030.5 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Last update 19 Jan 7:54 pm CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 7. Wind chill values between -3 and 2. Southwest wind 5 to 7 mph.

    Low: 7 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between -3 and 7. South southwest wind 6 to 15 mph, with gusts as high as 20 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a temperature rising to around 33 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 30 mph.

    Low: 25 °F⇑

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 38. Breezy, with a west wind 13 to 20 mph, with gusts as high as 28 mph.

    High: 38 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 19. West northwest wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 30. West wind 7 to 13 mph, with gusts as high as 18 mph.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 3. West northwest wind 6 to 14 mph, with gusts as high as 20 mph.

    Low: 3 °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
Mostly cloudy, then gradually becoming mostly clear, with a low around 7. Wind chill values between -3 and 2. Southwest wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between -3 and 7. South southwest wind 6 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a temperature rising to around 33 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 30 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 38. Breezy, with a west wind 13 to 20 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 19. West northwest wind 10 to 15 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 30. West wind 7 to 13 mph, with gusts as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 3. West northwest wind 6 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
Mostly cloudy, with a high near 11.
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 7.
Monday
Mostly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
Last Update:
8:37 pm CST Jan 19, 2026
Forecast Valid:
8pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

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