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

78°F

26°C

Humidity 67%
Wind Speed E 3 mph
Barometer 30.04 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 May 5:15 pm CDT
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Light and variable wind. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Calm wind becoming east northeast 5 to 7 mph in the afternoon.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 65. East northeast wind 3 to 5 mph.

    Low: 65 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 76. East northeast wind 5 to 7 mph.

    High: 76 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly after 1am. Mostly cloudy, with a low around 62. East northeast wind 3 to 5 mph.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 64. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Light and variable wind. Chance of precipitation is 60%.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Calm wind becoming east northeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 65. East northeast wind 3 to 5 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 76. East northeast wind 5 to 7 mph.
Friday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 62. East northeast wind 3 to 5 mph.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 78. Northeast wind 5 to 9 mph.
Saturday Night
Partly cloudy, with a low around 60. Northeast wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 78. Northeast wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 58. Northeast wind 3 to 8 mph.
Monday
Sunny, with a high near 79. Northeast wind 5 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
1:26 pm CDT May 25, 2026
Forecast Valid:
5pm CDT May 25, 2026-6pm CDT Jun 1, 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