National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

84°F

29°C

Humidity 77%
Wind Speed SW 10 mph
Barometer 29.99 in (1014.7 mb)
Dewpoint 76°F (24°C)
Visibility 8.00 mi
Heat Index93°F (34°C)
Last update 29 Jun 9:54 am CDT
Extended Forecast for

Warrensburg IL

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

  • Today

    Today: Partly sunny, with a high near 93. Heat index values as high as 106. South wind 13 to 17 mph, with gusts as high as 23 mph.

    High: 93 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 76. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 76 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 94. Heat index values as high as 107. South southwest wind 10 to 15 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 18 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 18 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 75. South wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 75 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94. South southwest wind 8 to 14 mph, with gusts as high as 18 mph.

    High: 94 °F

    Sunny

  • Thursday Night

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

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 93. Heat index values as high as 106. South wind 13 to 17 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 76. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 94. Heat index values as high as 107. South southwest wind 10 to 15 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 18 mph.
Wednesday
Sunny, with a high near 94. South southwest wind 8 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Clear, with a low around 75. South wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 94. South southwest wind 8 to 14 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 74.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 73.
Independence Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 71.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Warrensburg IL
 39.93°N 89.05°W (Elev. 699 ft)
Last Update:
2:46 am CDT Jun 29, 2026
Forecast Valid:
10am CDT Jun 29, 2026-6pm CDT Jul 5, 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