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.

Fair

79°F

26°C

Humidity 43%
Wind Speed NE 5 mph
Barometer 30.15 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 1 Sep 11:35 am CDT
Extended Forecast for

Harrisburg IL

  • Labor Day

    Labor Day: Sunny, with a high near 86. East northeast wind around 7 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. North northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Light east northeast wind.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Partly cloudy, with a low around 58. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 77. Northwest wind 6 to 8 mph.

    High: 77 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. Light and variable wind.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Light south southwest wind becoming west southwest 5 to 10 mph in the morning.

    High: 84 °F

    Sunny

Detailed Forecast

Labor Day
Sunny, with a high near 86. East northeast wind around 7 mph.
Tonight
Partly cloudy, with a low around 59. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. Light east northeast wind.
Tuesday Night
Partly cloudy, with a low around 59. Calm wind.
Wednesday
Sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Partly cloudy, with a low around 58. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 77. Northwest wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 50. Light and variable wind.
Friday
Sunny, with a high near 84. Light south southwest wind becoming west southwest 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 52. Northwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 80. Calm wind becoming north northwest 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 49. Light north northeast wind.
Sunday
Sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
8:32 am CDT Sep 1, 2025
Forecast Valid:
11am CDT Sep 1, 2025-6pm CDT Sep 7, 2025
 
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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