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

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

A Few Clouds

80°F

27°C

Humidity 87%
Wind Speed Vrbl 3 mph
Barometer 30.03 in (1016.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 29 Jun 7:52 am CDT
Extended Forecast for

3 Miles SSE Makanda IL

Extreme Heat Warning June 29, 11:00am until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny, with a high near 94. Heat index values as high as 109. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 75. South wind 3 to 8 mph.

    Low: 75 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Heat index values as high as 109. South southwest wind 3 to 7 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. South wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Calm wind becoming south around 6 mph in the afternoon.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. Light south wind.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. Light and variable wind.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 94. Heat index values as high as 109. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 75. South wind 3 to 8 mph.
Tuesday
Sunny, with a high near 95. Heat index values as high as 109. South southwest wind 3 to 7 mph.
Tuesday Night
Clear, with a low around 74. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 96. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 76. Light south wind.
Thursday
Sunny, with a high near 96. Calm wind becoming south southwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 76. Light and variable wind.
Friday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 76. Calm wind.
Independence Day
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Light south southwest wind.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 75. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Light southwest wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Makanda IL
 37.59°N 89.21°W
Last Update:
6:06 am CDT Jun 29, 2026
Forecast Valid:
8am 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