Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

44°F

7°C

Humidity 40%
Wind Speed E 12 mph
Barometer 30.38 in (1029.3 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 7 Apr 3:54 pm CDT
Extended Forecast for

Forsyth IL

  • Tonight

    Tonight: A chance of sprinkles between 10pm and midnight.  Mostly cloudy, with a low around 37. East wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 37 °F

    Chance
    Sprinkles

  • Wednesday

    Wednesday: Partly sunny, with a high near 69. Breezy, with a south wind 13 to 22 mph, with gusts as high as 31 mph.

    High: 69 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind around 17 mph, with gusts as high as 26 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74. Southwest wind 14 to 16 mph, with gusts as high as 23 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am.  Mostly cloudy, with a low around 54. South wind 10 to 15 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm.  Mostly cloudy, with a high near 65. Southwest wind 10 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers
    Likely

  • 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: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of sprinkles between 10pm and midnight. Mostly cloudy, with a low around 37. East wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday
Partly sunny, with a high near 69. Breezy, with a south wind 13 to 22 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind around 17 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 74. Southwest wind 14 to 16 mph, with gusts as high as 23 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 54. South wind 10 to 15 mph, with gusts as high as 21 mph.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 65. Southwest wind 10 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Mostly cloudy, with a low around 43. East northeast wind 8 to 10 mph, with gusts as high as 16 mph.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 79. Breezy.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 63. Breezy.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 81. Breezy.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Breezy.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
3:36 pm CDT Apr 7, 2026
4pm CDT Apr 7, 2026-6pm CDT Apr 14, 2026
 
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