Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

87°F

31°C

Humidity 72%
Wind Speed SE 9 mph
Barometer 29.88 in (1011.2 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 28 Jun 6:54 pm CDT
Extended Forecast for

Oreana IL

Heat Advisory June 29, 11:00am until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Mostly clear, with a low around 74. South southeast wind 8 to 10 mph, with gusts as high as 17 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 92. Heat index values as high as 105. South wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 92 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Heat index values as high as 105. South southwest wind 9 to 16 mph, with gusts as high as 22 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. South southwest wind 8 to 13 mph, with gusts as high as 17 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 74. South wind 8 to 10 mph, with gusts as high as 15 mph.

    Low: 74 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 74. South southeast wind 8 to 10 mph, with gusts as high as 17 mph.
Monday
Mostly sunny, with a high near 92. Heat index values as high as 105. South wind 9 to 16 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 74. South wind 9 to 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 94. Heat index values as high as 105. South southwest wind 9 to 16 mph, with gusts as high as 22 mph.
Tuesday Night
Clear, with a low around 74. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 94. South southwest wind 8 to 13 mph, with gusts as high as 17 mph.
Wednesday Night
Clear, with a low around 74. South wind 8 to 10 mph, with gusts as high as 15 mph.
Thursday
Sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 74.
Friday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 93.
Friday Night
Partly cloudy, with a low around 73.
Independence Day
Mostly sunny, with a high near 92.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Oreana IL
 39.95°N 88.88°W (Elev. 682 ft)
7:11 pm CDT Jun 28, 2026
7pm CDT Jun 28, 2026-6pm CDT Jul 5, 2026
 
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Additional Resources

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