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

45°F

7°C

Humidity 59%
Wind Speed SE 8 mph
Barometer 30.30 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 8 Apr 7:15 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Mostly sunny, with a high near 75. East southeast wind 6 to 9 mph becoming south in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 54. South wind 6 to 8 mph.

    Low: 54 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 78. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. South wind around 6 mph.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 79 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 78 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. Light and variable wind becoming southeast around 5 mph after midnight.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. South wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 75. East southeast wind 6 to 9 mph becoming south in the afternoon.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 54. South wind 6 to 8 mph.
Thursday
Sunny, with a high near 78. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 56. South wind around 6 mph.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 30%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 59. Light and variable wind becoming southeast around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 83. South wind 6 to 14 mph, with gusts as high as 22 mph.
Sunday Night
A chance of showers after 1am. Mostly cloudy, with a low around 67. South wind 10 to 14 mph, with gusts as high as 24 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 30 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South southwest wind around 15 mph, with gusts as high as 24 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South southwest wind 14 to 17 mph, with gusts as high as 26 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
7:21 am CDT Apr 8, 2026
Forecast Valid:
7am CDT Apr 8, 2026-6pm CDT Apr 14, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation