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

66°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 66°F (19°C)
Visibility 7.00 mi
Last update 23 May 11:15 pm CDT
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: A slight chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 81. Light north wind. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 63. Calm wind.

    Low: 63 °F

    Increasing
    Clouds

  • Memorial Day

    Memorial Day: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 50%.

    High: 80 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 66. Light east wind. Chance of precipitation is 70%.

    Low: 66 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 80. Calm wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. South southwest wind 3 to 6 mph.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light and variable wind.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 81. Light north wind. Chance of precipitation is 70%.
Sunday Night
Increasing clouds, with a low around 63. Calm wind.
Memorial Day
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 50%.
Monday Night
Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 66. Light east wind. Chance of precipitation is 70%.
Tuesday
Showers and possibly a thunderstorm. High near 80. Calm wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. South southwest wind 3 to 6 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light and variable wind.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Light and variable wind.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Calm wind.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. East northeast wind 3 to 8 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. East northeast wind 5 to 8 mph.
Saturday
A slight chance of showers. Partly sunny, with a high near 79. Northeast wind 6 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.72°N 88.58°W
Last Update:
11:06 pm CDT May 23, 2026
Forecast Valid:
11pm CDT May 23, 2026-6pm CDT May 30, 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