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

Hazardous Weather Conditions

Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

73°F

23°C

Humidity 98%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 3 Sep 2:35 am CDT
Extended Forecast for

McLeansboro IL

Extreme Heat Warning September 3, 02:42am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 3, 02:42am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Overnight

    Low: 73 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Calm wind becoming west southwest around 5 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 98. Light and variable wind. Chance of precipitation is 20%.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 72. Calm wind. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Calm wind becoming northeast 5 to 9 mph in the morning.

    High: 93 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 73. Calm wind.
Thursday
Sunny and hot, with a high near 99. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 75. Calm wind.
Friday
Sunny and hot, with a high near 99. Calm wind becoming west southwest around 5 mph.
Friday Night
Mostly clear, with a low around 75. Calm wind.
Saturday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 98. Light and variable wind. Chance of precipitation is 20%.
Saturday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 72. Calm wind. Chance of precipitation is 10%.
Sunday
Sunny, with a high near 93. Calm wind becoming northeast 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 65. Northeast wind 5 to 8 mph becoming calm after midnight.
Labor Day
Sunny, with a high near 93. Calm wind becoming east around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 69. Light east wind.
Tuesday
Sunny, with a high near 95. Calm wind becoming south 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 73. South wind around 6 mph.
Wednesday
Sunny and hot, with a high near 97. Southwest wind 7 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
McLeansboro IL
 38.1°N 88.53°W
Last Update:
2:36 am CDT Sep 3, 2026
Forecast Valid:
2am CDT Sep 3, 2026-6pm CDT Sep 9, 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