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.

A Few Clouds

72°F

22°C

Humidity 71%
Wind Speed S 14 G 26 mph
Barometer 29.85 in (1010.2 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 15 Apr 8:54 am CDT
Extended Forecast for

3 Miles WSW Forsyth IL

  • Today

    Today: Showers likely and possibly a thunderstorm before noon, then showers and thunderstorms likely, mainly after 4pm. Cloudy, with a high near 78. South southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers
    Likely then
    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 61 °F

    T-storms
    Likely then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 4pm, then a chance of showers after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 78. West southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. West wind 6 to 9 mph becoming south after midnight.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83. South wind 8 to 18 mph, with gusts as high as 25 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 52. South wind 15 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Showers

  • Saturday

    Saturday: A 50 percent chance of showers. Partly sunny, with a high near 66. Breezy, with a south southwest wind 17 to 22 mph becoming west in the afternoon. Winds could gust as high as 29 mph.

    High: 66 °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 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before noon, then showers and thunderstorms likely, mainly after 4pm. Cloudy, with a high near 78. South southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 4pm, then a chance of showers after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 78. West southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 55. West wind 6 to 9 mph becoming south after midnight.
Friday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83. South wind 8 to 18 mph, with gusts as high as 25 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 52. South wind 15 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 66. Breezy, with a south southwest wind 17 to 22 mph becoming west in the afternoon. Winds could gust as high as 29 mph.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 74.
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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:
7:41 am CDT Apr 15, 2026
Forecast Valid:
9am CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation