Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

52°F

11°C

Humidity 41%
Wind Speed E 17 G 26 mph
Barometer 30.02 in (1016.8 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 14 Mar 2:54 pm CDT
Extended Forecast for

3 Miles NNE Shelbyville IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory
  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 54. East southeast wind around 13 mph, with gusts as high as 22 mph.

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 46. East southeast wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm.  Mostly cloudy, with a high near 63. Breezy, with a south wind 18 to 23 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 47 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 11pm, then rain and snow showers between 11pm and 1am, then a chance of snow after 1am.  Patchy blowing snow after 1am. Low around 20. Blustery, with a west southwest wind 21 to 25 mph, with gusts as high as 41 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 20 °F

    Rain/Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: A 30 percent chance of snow before 1pm.  Mostly cloudy, with a high near 24. Blustery, with a west northwest wind 22 to 25 mph, with gusts as high as 41 mph.

    High: 24 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. West northwest wind 13 to 17 mph, with gusts as high as 29 mph.

    Low: 10 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. West northwest wind 7 to 9 mph, with gusts as high as 16 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 54. East southeast wind around 13 mph, with gusts as high as 22 mph.
Tonight
Increasing clouds, with a low around 46. East southeast wind 10 to 14 mph, with gusts as high as 25 mph.
Sunday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 63. Breezy, with a south wind 18 to 23 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Rain showers before 11pm, then rain and snow showers between 11pm and 1am, then a chance of snow after 1am. Patchy blowing snow after 1am. Low around 20. Blustery, with a west southwest wind 21 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 24. Blustery, with a west northwest wind 22 to 25 mph, with gusts as high as 41 mph.
Monday Night
Mostly cloudy, with a low around 10. West northwest wind 13 to 17 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 30. West northwest wind 7 to 9 mph, with gusts as high as 16 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Sunny, with a high near 67.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Shelbyville IL
 39.44°N 88.79°W (Elev. 673 ft)
2:16 pm CDT Mar 14, 2026
3pm CDT Mar 14, 2026-6pm CDT Mar 20, 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