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

33°F

1°C

Humidity 75%
Wind Speed NW 8 mph
Barometer 30.25 in (1025.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 12 Mar 4:54 am CDT
Extended Forecast for

Decatur IL

Wind Advisory March 12, 10:00pm until March 13, 01:00pm
Click here for hazard details and duration
Wind Advisory

  • Today

    Today: Increasing clouds, with a high near 50. West wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 50 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. Breezy, with a south wind 13 to 18 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 41 mph.

    Low: 41 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 54. Breezy, with a west northwest wind 18 to 23 mph, with gusts as high as 41 mph.

    High: 54 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. West northwest wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 23 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 54. East southeast wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 54 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 48. East southeast wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 48 °F

    Cloudy

  • Sunday

    Sunday: Rain. High near 63. Breezy, with a south wind 16 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    Breezy. Rain
    Likely then
    Rain

  • Sunday Night

    Sunday Night: Rain and snow likely before 1am, then a chance of snow. Cloudy, with a low around 21. Blustery. Chance of precipitation is 70%.

    Low: 21 °F

    Rain/Snow
    Likely and
    Blustery

  • Monday

    Monday: Mostly cloudy, with a high near 26. Blustery.

    High: 26 °F

    Mostly Cloudy
    and Blustery

Detailed Forecast

Today
Increasing clouds, with a high near 50. West wind 6 to 11 mph, with gusts as high as 18 mph.
Tonight
Mostly cloudy, with a low around 41. Breezy, with a south wind 13 to 18 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 41 mph.
Friday
Partly sunny, with a high near 54. Breezy, with a west northwest wind 18 to 23 mph, with gusts as high as 41 mph.
Friday Night
Mostly cloudy, with a low around 33. West northwest wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 23 mph.
Saturday
Mostly cloudy, with a high near 54. East southeast wind 7 to 11 mph, with gusts as high as 18 mph.
Saturday Night
Cloudy, with a low around 48. East southeast wind 10 to 16 mph, with gusts as high as 25 mph.
Sunday
Rain. High near 63. Breezy, with a south wind 16 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain and snow likely before 1am, then a chance of snow. Cloudy, with a low around 21. Blustery. Chance of precipitation is 70%.
Monday
Mostly cloudy, with a high near 26. Blustery.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Mostly cloudy, with a high near 49.
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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:
4:41 am CDT Mar 12, 2026
Forecast Valid:
5am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation