Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

21°F

-6°C

Humidity 80%
Wind Speed Calm
Barometer 30.41 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 23 Feb 10:15 pm CST
Extended Forecast for

Harrisburg IL

  • Tonight

    Tonight: Mostly clear, with a low around 20. Light south southwest wind.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 48. Breezy, with a south wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 48 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 57. West southwest wind around 5 mph becoming light and variable  in the afternoon.

    High: 57 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly after midnight.  Mostly cloudy, with a low around 40. East wind 3 to 7 mph.

    Low: 40 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers before noon.  Partly sunny, with a high near 52. North wind 6 to 9 mph.

    High: 52 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 33. North wind around 5 mph becoming calm  in the evening.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 60. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 39. South southwest wind around 6 mph.

    Low: 39 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 20. Light south southwest wind.
Tuesday
Increasing clouds, with a high near 48. Breezy, with a south wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Wednesday
Partly sunny, with a high near 57. West southwest wind around 5 mph becoming light and variable in the afternoon.
Wednesday Night
A 50 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 40. East wind 3 to 7 mph.
Thursday
A 50 percent chance of showers before noon. Partly sunny, with a high near 52. North wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 33. North wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 60. Calm wind becoming south southwest 5 to 7 mph in the morning.
Friday Night
Clear, with a low around 39. South southwest wind around 6 mph.
Saturday
Sunny, with a high near 66. South southwest wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 36. South wind around 8 mph becoming north after midnight.
Sunday
A slight chance of showers. Partly sunny, with a high near 53. Northeast wind 7 to 10 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 37. East northeast wind 7 to 9 mph.
Monday
A chance of showers. Partly sunny, with a high near 55. Northeast wind 8 to 10 mph becoming west northwest in the morning. Winds could gust as high as 18 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
9:42 pm CST Feb 23, 2026
10pm CST Feb 23, 2026-6pm CST Mar 2, 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