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

36°F

2°C

Humidity 94%
Wind Speed Calm
Barometer 30.29 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 6 Apr 5:15 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: Sunny, with a high near 67. Light and variable wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 41. North wind 3 to 6 mph.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58. East northeast wind around 9 mph.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. East northeast wind around 6 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 74. East southeast wind 6 to 9 mph becoming south in the afternoon.

    High: 74 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 53. South southeast wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 53 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 73. South wind around 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 58. South wind around 6 mph.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 77. South southwest wind around 7 mph.

    High: 77 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 67. Light and variable wind becoming northwest 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 41. North wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 58. East northeast wind around 9 mph.
Tuesday Night
Partly cloudy, with a low around 40. East northeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 74. East southeast wind 6 to 9 mph becoming south in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 53. South southeast wind 6 to 9 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 73. South wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 58. South wind around 6 mph.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 77. South southwest wind around 7 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58. Light and variable wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Light and variable wind becoming south 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 61. South southeast wind around 6 mph.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
5:12 am CDT Apr 6, 2026
Forecast Valid:
5am CDT Apr 6, 2026-6pm CDT Apr 12, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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