Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Weather and Flooding From Portions of the Plains to the Mid-Atlantic

A potent spring storm system with abundant moisture will bring a chance of significant severe weather and heavy rain today into tonight. Damaging winds, large hail, and a couple of tornadoes will be possible across the Tennessee Valley, middle Ohio Valley, and portions of the Mid-Atlantic. Heavy rain and flooding are possible from the Ozarks to the Tennessee Valley. Read More >

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fog/Mist

61°F

16°C

Humidity 97%
Wind Speed N 9 mph
Barometer 29.85 in (1010.4 mb)
Dewpoint 60°F (16°C)
Visibility 4.00 mi
Last update 27 May 4:54 am CDT
Extended Forecast for

Decatur IL

  • Today

    Today: Areas of fog before 8am.  Otherwise, mostly sunny, with a high near 81. North wind around 6 mph becoming east in the afternoon.

    Areas Fog
    then Mostly
    Sunny

    High: 81 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 10pm and 4am.  Increasing clouds, with a low around 64. East southeast wind around 7 mph becoming south after midnight.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    T-storms
    Likely

    Low: 64 °F

  • Sunday

    Sunday: A chance of showers and thunderstorms.  Mostly cloudy, with a high near 75. West wind 7 to 11 mph, with gusts as high as 17 mph.  Chance of precipitation is 30%.

    Chance
    T-storms then
    Chance
    Showers

    High: 75 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 57. West wind 6 to 9 mph.

    Mostly Clear

    Low: 57 °F

  • Memorial
    Day

    Memorial Day: Sunny, with a high near 77. West wind 6 to 11 mph, with gusts as high as 18 mph.

    Sunny

    High: 77 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 55. West wind 5 to 9 mph.

    Mostly Clear

    Low: 55 °F

  • Tuesday

    Tuesday: Sunny, with a high near 75. West wind 6 to 11 mph, with gusts as high as 17 mph.

    Sunny

    High: 75 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 55.

    Partly Cloudy

    Low: 55 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75.

    Mostly Sunny

    High: 75 °F

Detailed Forecast

Today
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 81. North wind around 6 mph becoming east in the afternoon.
Tonight
Showers and thunderstorms likely, mainly between 10pm and 4am. Increasing clouds, with a low around 64. East southeast wind around 7 mph becoming south after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 75. West wind 7 to 11 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 57. West wind 6 to 9 mph.
Memorial Day
Sunny, with a high near 77. West wind 6 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 55. West wind 5 to 9 mph.
Tuesday
Sunny, with a high near 75. West wind 6 to 11 mph, with gusts as high as 17 mph.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Partly sunny, with a high near 74.
Click Map For Forecast
Point Forecast:
Decatur IL
 39.86°N 88.94°W (Elev. 682 ft)
5:09 am CDT May 27, 2017
5am CDT May 27, 2017-6pm CDT Jun 2, 2017
 
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