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

65°F

18°C

Humidity 83%
Wind Speed S 7 mph
Barometer 30.06 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 6 Mar 7:55 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 80. South southwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 63. South wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 73. South southwest wind 8 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%.

    High: 73 °F

    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 42. West northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 42 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 66. Calm wind becoming west southwest around 5 mph.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 74. South southwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly after midnight. Partly cloudy, with a low around 60. South southwest wind around 8 mph.

    Low: 60 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 76. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 76 °F

    Showers
    Likely

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 80. South southwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 63. South wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 73. South southwest wind 8 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 100%.
Saturday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 42. West northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Sunny, with a high near 66. Calm wind becoming west southwest around 5 mph.
Sunday Night
Mostly clear, with a low around 47. Calm wind becoming south southwest around 6 mph after midnight.
Monday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 74. South southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
A chance of showers, mainly after midnight. Partly cloudy, with a low around 60. South southwest wind around 8 mph.
Tuesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 76. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely after midnight. Mostly cloudy, with a low around 60. South southwest wind 13 to 16 mph, with gusts as high as 29 mph.
Wednesday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 70. South southwest wind 13 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 40. North wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 57. North northeast wind 6 to 10 mph, with gusts as high as 18 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 88.55°W
Last Update:
5:16 am CST Mar 6, 2026
Forecast Valid:
8am CST Mar 6, 2026-6pm CDT Mar 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