Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fog/Mist

57°F

14°C

Humidity 93%
Wind Speed S 8 mph
Barometer 29.61 in (1002.9 mb)
Dewpoint 55°F (13°C)
Visibility 4.00 mi
Last update 19 Feb 9:54 am CST
Extended Forecast for

Forsyth IL

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after noon.  Patchy fog before 11am.  Otherwise, cloudy, with a high near 63. South southeast wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 63 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 9pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Breezy, with a south wind 9 to 14 mph becoming west 19 to 24 mph after midnight. Winds could gust as high as 39 mph.

    Low: 35 °F

    Chance
    Showers then
    Partly Cloudy
    and Breezy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 44. Breezy, with a west wind 21 to 26 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 44 °F

    Decreasing
    Clouds and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 41. West northwest wind 7 to 15 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. Northwest wind 10 to 17 mph, with gusts as high as 22 mph.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 34. Breezy, with a northwest wind 17 to 23 mph, with gusts as high as 31 mph.

    High: 34 °F

    Partly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34.

    High: 34 °F

    Sunny

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after noon. Patchy fog before 11am. Otherwise, cloudy, with a high near 63. South southeast wind 8 to 14 mph, with gusts as high as 22 mph.
Tonight
A 30 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Breezy, with a south wind 9 to 14 mph becoming west 19 to 24 mph after midnight. Winds could gust as high as 39 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 44. Breezy, with a west wind 21 to 26 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 38 mph.
Friday Night
Mostly clear, with a low around 25. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Saturday
Mostly sunny, with a high near 41. West northwest wind 7 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 22. Northwest wind 10 to 17 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 34. Breezy, with a northwest wind 17 to 23 mph, with gusts as high as 31 mph.
Sunday Night
Partly cloudy, with a low around 17.
Monday
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Mostly sunny, with a high near 44. Breezy.
Tuesday Night
Mostly cloudy, with a low around 34. Breezy.
Wednesday
Mostly cloudy, with a high near 54. 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)
8:56 am CST Feb 19, 2026
10am CST Feb 19, 2026-6pm CST Feb 25, 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