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

91°F

33°C

Humidity 61%
Wind Speed SW 17 G 26 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 76°F (24°C)
Visibility 9.00 mi
Heat Index103°F (39°C)
Last update 30 Jun 3:54 pm CDT
Extended Forecast for

Oreana IL

Extreme Heat Warning June 30, 04:26pm until July 3, 12:00am
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 30, 04:26pm until July 3, 12:00am

    NOW until 12:00am Fri

    Extreme Heat Warning

  • Tonight

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Heat index values as high as 102. South southwest wind 7 to 13 mph, with gusts as high as 18 mph.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 75. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Heat index values as high as 103. Southwest wind 8 to 11 mph, with gusts as high as 16 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. South southwest wind 6 to 8 mph.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South southwest wind 7 to 11 mph, with gusts as high as 16 mph.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 72. South southwest wind 5 to 7 mph. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 74. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 93. Heat index values as high as 102. South southwest wind 7 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Clear, with a low around 75. South wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 93. Heat index values as high as 103. Southwest wind 8 to 11 mph, with gusts as high as 16 mph.
Thursday Night
Mostly clear, with a low around 74. South southwest wind 6 to 8 mph.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South southwest wind 7 to 11 mph, with gusts as high as 16 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. South southwest wind 5 to 7 mph. Chance of precipitation is 40%.
Independence Day
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 50%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 69.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Oreana IL
 39.95°N 88.88°W (Elev. 682 ft)
Last Update:
3:06 pm CDT Jun 30, 2026
Forecast Valid:
4pm CDT Jun 30, 2026-6pm CDT Jul 7, 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