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

92°F

33°C

Humidity 62%
Wind Speed SW 9 mph
Barometer 30.09 in (1018.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 16 Aug 11:54 am CDT
Extended Forecast for

Oreana IL

Heat Advisory until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 17, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 73. South southwest wind 5 to 7 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming south southwest around 5 mph in the morning.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Light and variable wind becoming east around 5 mph in the evening.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95. South southeast wind 6 to 8 mph becoming southwest in the afternoon.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South southwest wind around 6 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. West wind 6 to 9 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 95. Heat index values as high as 110. Southwest wind around 8 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 73. South southwest wind 5 to 7 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming south southwest around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 74. Light and variable wind becoming east around 5 mph in the evening.
Monday
Sunny and hot, with a high near 95. South southeast wind 6 to 8 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 74. South southwest wind around 6 mph.
Tuesday
Sunny, with a high near 94. West wind 6 to 9 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oreana IL
 39.93°N 88.88°W (Elev. 682 ft)
Last Update:
11:56 am CDT Aug 16, 2025
Forecast Valid:
12pm CDT Aug 16, 2025-6pm CDT Aug 22, 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