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

42°F

6°C

Humidity 68%
Wind Speed SE 5 mph
Barometer 30.09 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 9 Feb 4:55 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Mostly clear, with a low around 37. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. Southwest wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 30. North wind around 6 mph.

    Low: 30 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 48. North wind 3 to 6 mph.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 47. Light east wind.

    High: 47 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 32. Light east wind.

    Low: 32 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 48. Calm wind becoming east around 5 mph.

    High: 48 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of showers after midnight. Mostly cloudy, with a low around 36. East wind 3 to 6 mph.

    Low: 36 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 37. Calm wind becoming south southwest 5 to 7 mph after midnight.
Tuesday
Partly sunny, with a high near 63. Southwest wind 6 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 30. North wind around 6 mph.
Wednesday
Sunny, with a high near 48. North wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 29. Calm wind.
Thursday
Mostly cloudy, with a high near 47. Light east wind.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 32. Light east wind.
Friday
Mostly cloudy, with a high near 48. Calm wind becoming east around 5 mph.
Friday Night
A chance of showers after midnight. Mostly cloudy, with a low around 36. East wind 3 to 6 mph.
Saturday
Showers likely, mainly after noon. Cloudy, with a high near 49. East wind 6 to 9 mph.
Saturday Night
Showers. Cloudy, with a low around 41. East wind around 10 mph, with gusts as high as 20 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 52. North northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 35. Northwest wind 3 to 7 mph.
Washington's Birthday
Mostly sunny, with a high near 58. Light and variable wind becoming south 5 to 7 mph in the morning.
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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:
4:47 pm CST Feb 9, 2026
Forecast Valid:
5pm CST Feb 9, 2026-6pm CST Feb 16, 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