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.

Fair

66°F

19°C

Humidity 39%
Wind Speed S 17 G 32 mph
Barometer 30.17 in (1021.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 8 Apr 12:54 pm CDT
Extended Forecast for

Forsyth IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 71. Breezy, with a south wind around 21 mph, with gusts as high as 29 mph.

    High: 71 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 54. South wind around 16 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 76. West southwest wind 13 to 15 mph, with gusts as high as 22 mph.

    High: 76 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 56. South wind 8 to 15 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers. High near 65. Southwest wind 11 to 13 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 65 °F

    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43. East northeast wind 8 to 10 mph, with gusts as high as 16 mph.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66. East southeast wind around 11 mph, with gusts as high as 16 mph.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 77. Breezy.

    High: 77 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 71. Breezy, with a south wind around 21 mph, with gusts as high as 29 mph.
Tonight
Partly cloudy, with a low around 54. South wind around 16 mph, with gusts as high as 25 mph.
Thursday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 76. West southwest wind 13 to 15 mph, with gusts as high as 22 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 56. South wind 8 to 15 mph, with gusts as high as 22 mph.
Friday
Showers. High near 65. Southwest wind 11 to 13 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly cloudy, with a low around 43. East northeast wind 8 to 10 mph, with gusts as high as 16 mph.
Saturday
Partly sunny, with a high near 66. East southeast wind around 11 mph, with gusts as high as 16 mph.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Mostly cloudy, with a high near 77. Breezy.
Sunday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 64. Breezy. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Breezy.
Monday Night
Showers likely. Mostly cloudy, with a low around 65. Breezy.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
Last Update:
12:37 pm CDT Apr 8, 2026
Forecast Valid:
1pm CDT Apr 8, 2026-6pm CDT Apr 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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