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.

Overcast

63°F

17°C

Humidity 78%
Wind Speed E 7 mph
Barometer 30.05 in (1017.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 3 Apr 10:54 am CDT
Extended Forecast for

Forsyth IL

  • Today

    Today: A 40 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76. South wind 7 to 15 mph, with gusts as high as 21 mph.

    High: 76 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 58. South wind 11 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers likely, mainly before 1pm. Mostly cloudy, with a temperature falling to around 52 by 5pm. Breezy, with a west wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F⇓

    Showers
    Likely then
    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 36. West northwest wind 14 to 18 mph, with gusts as high as 28 mph.

    Low: 36 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 53. West northwest wind 14 to 17 mph, with gusts as high as 24 mph.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. West wind 8 to 10 mph, with gusts as high as 16 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Northwest wind 10 to 17 mph, with gusts as high as 24 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76. South wind 7 to 15 mph, with gusts as high as 21 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 58. South wind 11 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely, mainly before 1pm. Mostly cloudy, with a temperature falling to around 52 by 5pm. Breezy, with a west wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Partly cloudy, with a low around 36. West northwest wind 14 to 18 mph, with gusts as high as 28 mph.
Sunday
Mostly sunny, with a high near 53. West northwest wind 14 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 36. West wind 8 to 10 mph, with gusts as high as 16 mph.
Monday
Sunny, with a high near 55. Northwest wind 10 to 17 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 67. Breezy.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Partly sunny, with a high near 73. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
Last Update:
10:36 am CDT Apr 3, 2026
Forecast Valid:
11am CDT Apr 3, 2026-6pm CDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation