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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

42°F

6°C

Humidity 71%
Wind Speed Calm
Barometer 29.67 in (1004.7 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 18 Feb 9:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 1am and 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 45. East southeast wind around 6 mph. Chance of precipitation is 20%.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers, mainly between 11am and noon, then a chance of rain and thunderstorms after noon. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 67. South southeast wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 67 °F

    Chance
    Showers and
    Areas Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before midnight. Partly cloudy, with a low around 35. Breezy, with a southwest wind 11 to 16 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 33 mph.

    Low: 35 °F

    Chance Rain
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 45. Breezy, with a west wind 21 to 26 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. Northwest wind 9 to 13 mph, with gusts as high as 17 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 40. West northwest wind 9 to 15 mph, with gusts as high as 20 mph.

    High: 40 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. Northwest wind 11 to 17 mph, with gusts as high as 23 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 34. Breezy.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 1am and 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 45. East southeast wind around 6 mph. Chance of precipitation is 20%.
Thursday
A chance of showers, mainly between 11am and noon, then a chance of rain and thunderstorms after noon. Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 67. South southeast wind 9 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 35. Breezy, with a southwest wind 11 to 16 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 33 mph.
Friday
Mostly sunny, with a high near 45. Breezy, with a west wind 21 to 26 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 34 mph.
Friday Night
Mostly clear, with a low around 25. Northwest wind 9 to 13 mph, with gusts as high as 17 mph.
Saturday
Sunny, with a high near 40. West northwest wind 9 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 21. Northwest wind 11 to 17 mph, with gusts as high as 23 mph.
Sunday
Partly sunny, with a high near 34. Breezy.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 35.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Partly sunny, with a high near 44. Breezy.
Tuesday Night
Mostly cloudy, with a low around 34. Breezy.
Wednesday
A chance of rain. Partly sunny, with a high near 51. Breezy.
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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:
9:36 pm CST Feb 18, 2026
Forecast Valid:
10pm CST Feb 18, 2026-6pm CST Feb 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation