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

37°F

3°C

Humidity 73%
Wind Speed NE 17 mph
Barometer 30.38 in (1029.0 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 7 Apr 3:54 am CDT
Extended Forecast for

Decatur IL

  • Today

    Today: A slight chance of snow between 7am and 8am. Cloudy, with a high near 48. East wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. East wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 69. South southeast wind 13 to 18 mph, with gusts as high as 28 mph.

    High: 69 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind around 15 mph, with gusts as high as 24 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 74. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 55. South wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 67. South southwest wind 8 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers. Partly sunny, with a high near 68.

    High: 68 °F

    Chance
    Showers

Detailed Forecast

Today
A slight chance of snow between 7am and 8am. Cloudy, with a high near 48. East wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 37. East wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 69. South southeast wind 13 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind around 15 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 74. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 55. South wind 8 to 11 mph, with gusts as high as 20 mph.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 67. South southwest wind 8 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Mostly cloudy, with a high near 78.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 63.
Monday
A chance of showers. Partly sunny, with a high near 81. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur IL
 39.84°N 88.94°W (Elev. 692 ft)
Last Update:
2:57 am CDT Apr 7, 2026
Forecast Valid:
4am CDT Apr 7, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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