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.

Mostly Cloudy

59°F

15°C

Humidity 81%
Wind Speed N 8 mph
Barometer 30.31 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 10 Apr 11:15 pm CDT
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. Northeast wind 3 to 7 mph.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 77. East wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 20%.

    High: 77 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 60 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 85. South southwest wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 85 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. South southwest wind around 14 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. South southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 68 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers before 1pm. Mostly sunny, with a high near 87. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 87 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 70 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 55. Northeast wind 3 to 7 mph.
Saturday
A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 77. East wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 20%.
Saturday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
Partly sunny, with a high near 85. South southwest wind 6 to 16 mph, with gusts as high as 26 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. South southwest wind around 14 mph, with gusts as high as 25 mph.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 14 to 16 mph, with gusts as high as 28 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly 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 before 1pm. Mostly sunny, with a high near 87. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southwest wind around 11 mph, with gusts as high as 21 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. South southwest wind 6 to 8 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. South southwest wind around 7 mph.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
10:26 pm CDT Apr 10, 2026
Forecast Valid:
11pm CDT Apr 10, 2026-6pm CDT Apr 17, 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