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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

66°F

19°C

Humidity 81%
Wind Speed S 10 mph
Barometer 29.93 in (1013.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 17 Apr 8:54 am CDT
Extended Forecast for

3 Miles WSW Forsyth IL

  • Today

    Today: A slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. Breezy, with a south wind 11 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Low around 46. Breezy, with a south wind 18 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 46 °F

    T-storms and
    Breezy

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm. Cloudy through mid morning, then gradual clearing, with a high near 55. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    High: 55 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. West northwest wind 8 to 17 mph, with gusts as high as 24 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 8am. Otherwise, sunny, with a high near 59. West northwest wind 8 to 18 mph, with gusts as high as 26 mph.

    High: 59 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. North northwest wind 6 to 11 mph becoming east after midnight. Winds could gust as high as 17 mph.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

  • Monday

    Monday: Patchy frost before 8am. Otherwise, sunny, with a high near 64. East wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 16 mph.

    High: 64 °F

    Patchy Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Breezy.

    High: 76 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Today
A slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. Breezy, with a south wind 11 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Low around 46. Breezy, with a south wind 18 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm. Cloudy through mid morning, then gradual clearing, with a high near 55. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Saturday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. West northwest wind 8 to 17 mph, with gusts as high as 24 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 59. West northwest wind 8 to 18 mph, with gusts as high as 26 mph.
Sunday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. North northwest wind 6 to 11 mph becoming east after midnight. Winds could gust as high as 17 mph.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 64. East wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 16 mph.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Mostly sunny, with a high near 76. Breezy.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 81.
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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:
8:42 am CDT Apr 17, 2026
Forecast Valid:
9am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation