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

44°F

7°C

Humidity 55%
Wind Speed S 20 G 29 mph
Barometer 29.87 in (1011.6 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 13 Mar 12:54 am CDT
Extended Forecast for

3 Miles WSW Forsyth IL

Wind Advisory until March 13, 04:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until March 13, 04:00pm

    NOW until 4:00pm Fri

    Wind Advisory

  • Overnight

    Low: 41 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 53. Breezy, with a west wind 23 to 28 mph, with gusts as high as 43 mph.

    High: 53 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: A 10 percent chance of rain after 5am. Partly cloudy, with a low around 33. West northwest wind 6 to 15 mph becoming east northeast after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 55. East southeast wind 9 to 15 mph, with gusts as high as 22 mph.

    High: 55 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48. East southeast wind 14 to 18 mph, with gusts as high as 28 mph.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain, mainly after 1pm. High near 67. Windy, with a south wind 21 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Chance Rain
    and Breezy
    then Rain and
    Windy

  • Sunday Night

    Sunday Night: Rain before 1am, then snow. Some thunder is also possible. Low around 21. Windy, with a south southwest wind 23 to 30 mph becoming west northwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 21 °F

    Rain and
    Breezy then
    Rain/Snow and
    Windy

  • Monday

    Monday: A 50 percent chance of snow before 1pm. Mostly cloudy, with a high near 25. Windy.

    High: 25 °F

    Chance Snow
    and Windy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 41. Breezy, with a south wind around 26 mph, with gusts as high as 39 mph.
Friday
Partly sunny, with a high near 53. Breezy, with a west wind 23 to 28 mph, with gusts as high as 43 mph.
Friday Night
A 10 percent chance of rain after 5am. Partly cloudy, with a low around 33. West northwest wind 6 to 15 mph becoming east northeast after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly cloudy, with a high near 55. East southeast wind 9 to 15 mph, with gusts as high as 22 mph.
Saturday Night
Mostly cloudy, with a low around 48. East southeast wind 14 to 18 mph, with gusts as high as 28 mph.
Sunday
Rain, mainly after 1pm. High near 67. Windy, with a south wind 21 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain before 1am, then snow. Some thunder is also possible. Low around 21. Windy, with a south southwest wind 23 to 30 mph becoming west northwest after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
A 50 percent chance of snow before 1pm. Mostly cloudy, with a high near 25. Windy.
Monday Night
Partly cloudy, with a low around 10. Blustery.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 22.
Wednesday
Mostly cloudy, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
Last Update:
1:26 am CDT Mar 13, 2026
Forecast Valid:
1am CDT Mar 13, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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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