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

83°F

28°C

Humidity 47%
Wind Speed NA
Barometer 30.21 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 3 Oct 2:35 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: A slight chance of sprinkles after 5pm. Sunny, with a high near 88. South wind around 6 mph.

    High: 88 °F

    Slight Chance
    Sprinkles

  • Tonight

    Tonight: A slight chance of sprinkles before 7pm. Clear, with a low around 59. Light south wind.

    Low: 59 °F

    Slight Chance
    Sprinkles

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Calm wind becoming south 5 to 8 mph in the morning.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. Light south southeast wind.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers. Mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning.

    High: 83 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 80. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 80 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A slight chance of sprinkles after 5pm. Sunny, with a high near 88. South wind around 6 mph.
Tonight
A slight chance of sprinkles before 7pm. Clear, with a low around 59. Light south wind.
Saturday
Sunny, with a high near 86. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Saturday Night
Clear, with a low around 57. Calm wind.
Sunday
Sunny, with a high near 86. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 64. Light south southeast wind.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 83. Calm wind becoming south around 6 mph in the morning.
Monday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. Calm wind.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Calm wind becoming north northwest around 6 mph in the afternoon.
Tuesday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 57. North northeast wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 75. Northeast wind 7 to 11 mph.
Wednesday Night
Mostly clear, with a low around 52. East northeast wind 5 to 7 mph.
Thursday
Sunny, with a high near 74. East northeast wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.52°W
Last Update:
2:31 pm CDT Oct 3, 2025
Forecast Valid:
2pm CDT Oct 3, 2025-6pm CDT Oct 9, 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