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

67°F

19°C

Humidity 35%
Wind Speed E 7 mph
Barometer 30.12 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 14 May 12:35 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 75. Light northeast wind.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 82. South wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 67. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South southwest wind around 11 mph, with gusts as high as 22 mph.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67. South wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90. South wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69. South wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 90. South wind 8 to 17 mph, with gusts as high as 25 mph.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 75. Light northeast wind.
Tonight
Mostly clear, with a low around 52. Calm wind becoming south southeast around 5 mph after midnight.
Friday
A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 82. South wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 67. South wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South southwest wind around 11 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 67. South wind 5 to 9 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 90. South wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 69. South wind 7 to 9 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 90. South wind 8 to 17 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 85. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. South southwest wind 5 to 8 mph, with gusts as high as 20 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. South wind around 7 mph becoming west in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.72°N 88.55°W
Last Update:
11:36 am CDT May 14, 2026
Forecast Valid:
12pm CDT May 14, 2026-6pm CDT May 20, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation