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

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fog/Mist

72°F

22°C

Humidity 95%
Wind Speed Calm
Barometer 30.20 in
Dewpoint 70°F (21°C)
Visibility 5.00 mi
Last update 7 Aug 7:35 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Mostly sunny, with a high near 91. Light south wind.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 94. Calm wind becoming south around 6 mph in the morning.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 72. Light south wind.

    Low: 72 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 93. Calm wind becoming south 5 to 7 mph in the morning.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 72. South southeast wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Calm wind becoming south around 6 mph in the morning.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. Light south wind.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Calm wind becoming south around 6 mph in the morning.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 91. Light south wind.
Tonight
Mostly clear, with a low around 71. Calm wind.
Friday
Sunny, with a high near 94. Calm wind becoming south around 6 mph in the morning.
Friday Night
Clear, with a low around 72. Light south wind.
Saturday
Sunny, with a high near 93. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
Clear, with a low around 72. South southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 93. Calm wind becoming south around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 72. Light south wind.
Monday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Calm wind becoming south around 6 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. Light south wind.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the morning.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Light south southwest wind.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming southwest around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
7:30 am CDT Aug 7, 2025
Forecast Valid:
7am CDT Aug 7, 2025-6pm CDT Aug 13, 2025
 
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