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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

73°F

23°C

Humidity 69%
Wind Speed SW 18 G 26 mph
Barometer 29.88 in (1011.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 15 Apr 12:54 pm CDT
Extended Forecast for

Forsyth IL

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 77. South southwest wind around 17 mph, with gusts as high as 26 mph.

    High: 77 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then a slight chance of showers. Low around 61. South southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 13 to 16 mph, with gusts as high as 23 mph.

    High: 77 °F

    Slight Chance
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. West wind 5 to 7 mph becoming southeast after midnight.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 84. Breezy, with a south southeast wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 84 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 49. South wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 49 °F

    Showers

  • Saturday

    Saturday: A 50 percent chance of showers. Partly sunny, with a high near 60. Breezy, with a west northwest wind 18 to 22 mph, with gusts as high as 28 mph.

    High: 60 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 77. South southwest wind around 17 mph, with gusts as high as 26 mph.
Tonight
Showers and thunderstorms before 4am, then a slight chance of showers. Low around 61. South southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A 20 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 13 to 16 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 54. West wind 5 to 7 mph becoming southeast after midnight.
Friday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 84. Breezy, with a south southeast wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 28 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 49. South wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 60. Breezy, with a west northwest wind 18 to 22 mph, with gusts as high as 28 mph.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 75. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
Last Update:
1:21 pm CDT Apr 15, 2026
Forecast Valid:
1pm CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation