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.

Light Rain

72°F

22°C

Humidity 94%
Wind Speed S 10 mph
Barometer 30.08 in (1017.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 14 Aug 11:54 am CDT
Extended Forecast for

Owaneco IL

Heat Advisory August 14, 12:51pm until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 14, 12:51pm until August 16, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 91 °F

    Showers
    Likely

  • Tonight

    Tonight: A slight chance of showers before 4am, then a slight chance of showers after 5am. Partly cloudy, with a low around 73. Southeast wind 5 to 7 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon. Mostly sunny, with a high near 94. Heat index values as high as 111. Southwest wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.

    High: 94 °F

    Chance
    T-storms then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74. Southwest wind 3 to 7 mph.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 92. West northwest wind 5 to 8 mph.

    High: 92 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. North wind 3 to 7 mph.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 84. North wind 5 to 8 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly before 2pm. Partly sunny, with a high near 91. South southeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A slight chance of showers before 4am, then a slight chance of showers after 5am. Partly cloudy, with a low around 73. Southeast wind 5 to 7 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon. Mostly sunny, with a high near 94. Heat index values as high as 111. Southwest wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 74. Southwest wind 3 to 7 mph.
Sunday
Partly sunny, with a high near 92. West northwest wind 5 to 8 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. North wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 84. North wind 5 to 8 mph.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Owaneco IL
 39.47°N 89.19°W (Elev. 623 ft)
Last Update:
12:36 pm CDT Aug 14, 2026
Forecast Valid:
12pm CDT Aug 14, 2026-6pm CDT Aug 20, 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