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

68°F

20°C

Humidity 61%
Wind Speed SW 14 mph
Barometer 29.93 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 26 Mar 8:15 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Sunny, with a high near 86. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 33 mph.

    High: 86 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 46. South southwest wind 11 to 16 mph becoming west after midnight. Winds could gust as high as 29 mph.

    Low: 46 °F

    Mostly Clear
    then Chance
    T-storms

  • Friday

    Friday: Showers likely and possibly a thunderstorm, then showers after 7am. Temperature falling to around 49 by 11am. North wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 54 °F⇓

    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 32. North wind 5 to 13 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. Light and variable wind becoming northeast around 6 mph in the morning.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Light east southeast wind.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68. Light south southeast wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 86. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 33 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 46. South southwest wind 11 to 16 mph becoming west after midnight. Winds could gust as high as 29 mph.
Friday
Showers likely and possibly a thunderstorm, then showers after 7am. Temperature falling to around 49 by 11am. North wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Friday Night
Mostly clear, with a low around 32. North wind 5 to 13 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 56. Light and variable wind becoming northeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 40. Light east southeast wind.
Sunday
Mostly sunny, with a high near 68. Light south southeast wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 56. South wind 7 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 79. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 63. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. South southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 64. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South southwest wind 14 to 18 mph, with gusts as high as 28 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
5:26 am CDT Mar 26, 2026
Forecast Valid:
8am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation