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

53°F

12°C

Humidity 34%
Wind Speed NW 18 G 31 mph
Barometer 29.90 in (1012.5 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 13 Mar 2:54 pm CDT
Extended Forecast for

Decatur IL

Wind Advisory March 13, 03:12pm until March 13, 04:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 13, 03:12pm until March 13, 04:00pm

    NOW until 4:00pm Fri

    Wind Advisory

  • This Afternoon

    High: 53 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. West northwest wind 6 to 11 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 53. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 53 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47. East southeast wind 13 to 16 mph, with gusts as high as 26 mph.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain before 10am, then showers, mainly after 1pm. High near 67. Breezy, with a south wind 18 to 26 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

    Breezy.
    Chance Rain
    then Showers

  • Sunday Night

    Sunday Night: Rain showers before 1am, then snow likely. Low around 21. Blustery, with a south southwest wind 22 to 26 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 21 °F

    Showers and
    Breezy then
    Rain/Snow and
    Blustery

  • Monday

    Monday: A 50 percent chance of snow before 1pm. Cloudy, with a high near 25. Blustery, with a west northwest wind around 25 mph, with gusts as high as 39 mph.

    High: 25 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Blustery.

    Low: 10 °F

    Mostly Cloudy
    and Blustery

Detailed Forecast

This Afternoon
Partly sunny, with a high near 53. Breezy, with a west wind 18 to 21 mph, with gusts as high as 32 mph.
Tonight
Mostly cloudy, with a low around 33. West northwest wind 6 to 11 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.
Saturday
Partly sunny, with a high near 53. Southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Mostly cloudy, with a low around 47. East southeast wind 13 to 16 mph, with gusts as high as 26 mph.
Sunday
A chance of rain before 10am, then showers, mainly after 1pm. High near 67. Breezy, with a south wind 18 to 26 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 showers before 1am, then snow likely. Low around 21. Blustery, with a south southwest wind 22 to 26 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 50 percent chance of snow before 1pm. Cloudy, with a high near 25. Blustery, with a west northwest wind around 25 mph, with gusts as high as 39 mph.
Monday Night
Mostly cloudy, with a low around 10. Blustery.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
A chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 53.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Mostly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Decatur IL
 39.84°N 88.94°W (Elev. 692 ft)
Last Update:
2:06 pm CDT Mar 13, 2026
Forecast Valid:
3pm CDT Mar 13, 2026-6pm CDT Mar 19, 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