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

28°F

-2°C

Humidity 89%
Wind Speed Calm
Barometer 30.34 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 12 Feb 12:35 am CST
Extended Forecast for

Harrisburg IL

  • Overnight

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

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 50. Calm wind becoming east around 6 mph in the morning.

    High: 50 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31. East southeast wind 3 to 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 56. Calm wind becoming south southeast around 5 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 54. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 54 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely. Cloudy, with a low around 45. East wind around 7 mph. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before noon. Partly sunny, with a high near 55. North wind 7 to 10 mph.

    High: 55 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 29. Calm wind.
Thursday
Partly sunny, with a high near 50. Calm wind becoming east around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 31. East southeast wind 3 to 5 mph.
Friday
Sunny, with a high near 56. Calm wind becoming south southeast around 5 mph.
Friday Night
Mostly cloudy, with a low around 36. Calm wind.
Saturday
A 40 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 54. Calm wind becoming south southeast around 6 mph in the afternoon.
Saturday Night
Showers likely. Cloudy, with a low around 45. East wind around 7 mph. Chance of precipitation is 60%.
Sunday
A chance of showers before noon. Partly sunny, with a high near 55. North wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 60. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Mostly cloudy, with a low around 44. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 6 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 54. South southwest wind 11 to 15 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers. Partly sunny, with a high near 67. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
10:31 pm CST Feb 11, 2026
Forecast Valid:
12am CST Feb 12, 2026-6pm CST Feb 18, 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