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 and Breezy

54°F

12°C

Humidity 80%
Wind Speed S 24 G 33 mph
Barometer 29.62 in (1003.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 17 Feb 10:54 pm CST
Extended Forecast for

Decatur IL

Wind Advisory until February 18, 01:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until February 18, 01:00am

    NOW until 1:00am Wed

    Wind Advisory

  • Tonight

    Low: 51 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 68. West southwest wind 9 to 17 mph, with gusts as high as 28 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Increasing clouds, with a low around 47. Southwest wind around 7 mph becoming south southeast after midnight.

    Low: 47 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: A 50 percent chance of rain after noon. Partly sunny, with a high near 67. South southeast wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 67 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before midnight. Partly cloudy, with a low around 35. South southwest wind 11 to 18 mph becoming west after midnight. Winds could gust as high as 28 mph.

    Low: 35 °F

    Chance Rain
    then Partly
    Cloudy

  • Friday

    Friday: Sunny, with a high near 45. West wind 11 to 18 mph, with gusts as high as 29 mph.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27. West northwest wind 7 to 9 mph, with gusts as high as 15 mph.

    Low: 27 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

Tonight
A chance of rain before 4am, then a chance of sprinkles between 4am and 5am. Mostly cloudy, with a low around 51. Breezy, with a south wind 17 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.
Wednesday
Sunny, with a high near 68. West southwest wind 9 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Increasing clouds, with a low around 47. Southwest wind around 7 mph becoming south southeast after midnight.
Thursday
A 50 percent chance of rain after noon. Partly sunny, with a high near 67. South southeast wind 8 to 14 mph, with gusts as high as 23 mph.
Thursday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 35. South southwest wind 11 to 18 mph becoming west after midnight. Winds could gust as high as 28 mph.
Friday
Sunny, with a high near 45. West wind 11 to 18 mph, with gusts as high as 29 mph.
Friday Night
Mostly clear, with a low around 27. West northwest wind 7 to 9 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly clear, with a low around 17.
Monday
Sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Decatur IL
 39.84°N 88.94°W (Elev. 692 ft)
Last Update:
9:45 pm CST Feb 17, 2026
Forecast Valid:
11pm CST Feb 17, 2026-6pm CST Feb 24, 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