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.

Overcast

26°F

-3°C

Humidity 78%
Wind Speed SW 6 mph
Barometer 30.17 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 2 Dec 10:35 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. Calm wind becoming southwest 5 to 8 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 21. Calm wind becoming north 5 to 9 mph after midnight.

    Low: 21 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 30. North wind 5 to 9 mph becoming light north northeast in the afternoon.

    High: 30 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 18. Calm wind.

    Low: 18 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39. Light south southwest wind.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42. Light and variable wind.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26. Light east wind.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. Calm wind.
Wednesday
Mostly sunny, with a high near 42. Calm wind becoming southwest 5 to 8 mph.
Wednesday Night
Increasing clouds, with a low around 21. Calm wind becoming north 5 to 9 mph after midnight.
Thursday
Partly sunny, with a high near 30. North wind 5 to 9 mph becoming light north northeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 18. Calm wind.
Friday
Mostly sunny, with a high near 39. Light south southwest wind.
Friday Night
Partly cloudy, with a low around 23. Calm wind.
Saturday
Mostly sunny, with a high near 42. Light and variable wind.
Saturday Night
Mostly cloudy, with a low around 26. Light east wind.
Sunday
Mostly cloudy, with a high near 41. Light and variable wind becoming east 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 23. North wind 3 to 5 mph.
Monday
Partly sunny, with a high near 37. North northwest wind around 6 mph becoming light and variable in the afternoon.
Monday Night
Mostly cloudy, with a low around 25. Calm wind becoming southwest around 6 mph after midnight.
Tuesday
A slight chance of rain and snow showers. Partly sunny, with a high near 43. West southwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.52°W
Last Update:
7:21 pm CST Dec 2, 2025
Forecast Valid:
10pm CST Dec 2, 2025-6pm CST Dec 9, 2025
 
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