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

57°F

14°C

Humidity 61%
Wind Speed S 5 mph
Barometer 30.22 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 10 Apr 4:35 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 80. South southwest wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 55. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 55 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60. South wind 3 to 6 mph.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 83. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 83 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. South southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68. South southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 88 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 80. South southwest wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 55. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
A slight chance of showers before 7am, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 60. South wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 83. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. South southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 68. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southwest wind 6 to 9 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 6 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
2:16 am CDT Apr 10, 2026
Forecast Valid:
4am CDT Apr 10, 2026-6pm CDT Apr 16, 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