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

43°F

6°C

Humidity 88%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 27 Feb 8:15 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 41. South southwest wind 5 to 7 mph becoming light and variable after midnight.

    Low: 41 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 69. Light and variable wind becoming south southeast around 6 mph in the morning.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 36. South southwest wind 6 to 10 mph becoming north northeast after midnight. Winds could gust as high as 18 mph.

    Low: 36 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 51. Northeast wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 51 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers likely, mainly after midnight. Cloudy, with a low around 36. East northeast wind around 8 mph. Chance of precipitation is 60%.

    Low: 36 °F

    Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers before noon. Cloudy, with a high near 46. East northeast wind 7 to 9 mph.

    High: 46 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 38. East northeast wind around 6 mph becoming south southeast after midnight.

    Low: 38 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 60. South southeast wind 6 to 9 mph becoming southwest in the afternoon.

    High: 60 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning.
Tonight
Clear, with a low around 41. South southwest wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 69. Light and variable wind becoming south southeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 36. South southwest wind 6 to 10 mph becoming north northeast after midnight. Winds could gust as high as 18 mph.
Sunday
Mostly cloudy, with a high near 51. Northeast wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Showers likely, mainly after midnight. Cloudy, with a low around 36. East northeast wind around 8 mph. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers before noon. Cloudy, with a high near 46. East northeast wind 7 to 9 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 38. East northeast wind around 6 mph becoming south southeast after midnight.
Tuesday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 60. South southeast wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 48. West southwest wind around 6 mph becoming east in the evening.
Wednesday
A chance of showers and thunderstorms. Cloudy, with a high near 67. South wind 6 to 9 mph.
Wednesday Night
A chance of showers and thunderstorms. Cloudy, with a low around 55. South wind 7 to 11 mph, with gusts as high as 21 mph.
Thursday
A chance of showers. Cloudy, with a high near 70. South southwest wind 8 to 14 mph, with gusts as high as 23 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:
8:22 am CST Feb 27, 2026
Forecast Valid:
8am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
Forecast Discussion
 
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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