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

70°F

21°C

Humidity 50%
Wind Speed SW 8 mph
Barometer 29.98 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 20 Mar 10:55 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Sunny, with a high near 82. West southwest wind around 10 mph, with gusts as high as 18 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 81. Calm wind becoming east around 5 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 60. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 85. South southwest wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 45. Southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph.

    Low: 45 °F

    Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 60. North wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. East northeast wind 3 to 6 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. East southeast wind 3 to 5 mph.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. West southwest wind around 10 mph, with gusts as high as 18 mph.
Tonight
Partly cloudy, with a low around 54. Southwest wind 5 to 7 mph becoming calm after midnight.
Saturday
Sunny, with a high near 81. Calm wind becoming east around 5 mph.
Saturday Night
Clear, with a low around 60. Calm wind becoming south southwest around 6 mph after midnight.
Sunday
Sunny, with a high near 85. South southwest wind 8 to 15 mph, with gusts as high as 23 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 45. Southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 23 mph.
Monday
Sunny, with a high near 60. North wind 9 to 11 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 40. East northeast wind 3 to 6 mph.
Tuesday
Partly sunny, with a high near 63. East southeast wind 3 to 5 mph.
Tuesday Night
Mostly cloudy, with a low around 44. East northeast wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 66. East wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 51. South southeast wind 6 to 8 mph.
Thursday
Sunny, with a high near 78. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
10:11 am CDT Mar 20, 2026
Forecast Valid:
11am CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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