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

62°F

17°C

Humidity 32%
Wind Speed NW 7 mph
Barometer 30.24 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 6 Apr 6:35 pm CDT
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Mostly clear, with a low around 39. North northeast wind 3 to 8 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. East northeast wind 7 to 13 mph, with gusts as high as 18 mph.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 38. East northeast wind around 6 mph.

    Low: 38 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. East southeast wind 5 to 8 mph becoming south in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South southeast wind 6 to 8 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75. South wind 7 to 10 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. South wind 3 to 5 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 78. Southwest wind 5 to 8 mph.

    High: 78 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Light and variable wind.

    Low: 58 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 39. North northeast wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 59. East northeast wind 7 to 13 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 38. East northeast wind around 6 mph.
Wednesday
Mostly sunny, with a high near 74. East southeast wind 5 to 8 mph becoming south in the afternoon.
Wednesday Night
Partly cloudy, with a low around 53. South southeast wind 6 to 8 mph.
Thursday
Sunny, with a high near 75. South wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 54. South wind 3 to 5 mph.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 78. Southwest wind 5 to 8 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Light and variable wind.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Light and variable wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 61. Southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 84. South southwest wind 6 to 14 mph, with gusts as high as 22 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 66. South wind 9 to 11 mph, with gusts as high as 22 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 13 to 18 mph, with gusts as high as 28 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:
4:16 pm CDT Apr 6, 2026
Forecast Valid:
6pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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