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

58°F

14°C

Humidity 60%
Wind Speed SW 5 mph
Barometer 29.99 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 20 Mar 3:35 am CDT
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 57. South southwest wind around 7 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. West southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. Southwest wind around 6 mph becoming calm after midnight.

    Low: 52 °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

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 57. South southwest wind around 7 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 81. West southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 52. Southwest wind around 6 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
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
1:26 am CDT Mar 20, 2026
Forecast Valid:
3am CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

Radar & Satellite Image

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