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

65°F

18°C

Humidity 66%
Wind Speed SW 16 G 28 mph
Barometer 29.97 in (1014.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 28 Mar 7:54 am CDT
Extended Forecast for

Decatur Airport IL

  • Today

    Today: Isolated showers and thunderstorms before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 81. Breezy, with a southwest wind 14 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.

    High: 81 °F

    Breezy.
    Isolated
    T-storms then
    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Partly cloudy, with a low around 60. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph.

    Low: 60 °F

    Mostly Clear
    and Breezy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers, mainly after 7am. Mostly cloudy, with a high near 68. South wind 14 to 18 mph, with gusts as high as 29 mph.

    High: 68 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 60. South wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 74. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Breezy.
    Showers then
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 39. Northwest wind around 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    T-storms
    Likely then
    Showers
    Likely

  • Monday

    Monday: Mostly cloudy, with a high near 49. Northwest wind around 17 mph, with gusts as high as 25 mph.

    High: 49 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

Detailed Forecast

Today
Isolated showers and thunderstorms before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 81. Breezy, with a southwest wind 14 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers after 4am. Partly cloudy, with a low around 60. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph.
Saturday
A 50 percent chance of showers, mainly after 7am. Mostly cloudy, with a high near 68. South wind 14 to 18 mph, with gusts as high as 29 mph.
Saturday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 60. South wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 74. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 39. Northwest wind around 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly cloudy, with a high near 49. Northwest wind around 17 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 57.
Tuesday Night
Showers likely after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Wednesday
Showers. Mostly cloudy, with a high near 70. Breezy.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46.
Thursday
A chance of showers. Partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur Airport IL
 39.84°N 88.88°W (Elev. 650 ft)
Last Update:
7:58 am CDT Mar 28, 2025
Forecast Valid:
8am CDT Mar 28, 2025-6pm CDT Apr 3, 2025
 
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