National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Thunderstorm in Vicinity Fog/Mist

41°F

5°C

Humidity 94%
Wind Speed E 3 mph
Barometer 30.10 in
Dewpoint 40°F (4°C)
Visibility 1.75 mi
Last update 3 Mar 6:55 am CST
Extended Forecast for

Harrisburg IL

  • Today

    Today: A chance of showers before 9am, then a chance of showers after 11am. Partly sunny, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 56. South wind around 5 mph becoming east in the evening. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 72. South southwest wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 72 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. South wind 6 to 8 mph. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 71. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 71 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 58. South wind 3 to 6 mph. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 79. South southwest wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 79 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 62. South wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 71. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 71 °F

    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers before 9am, then a chance of showers after 11am. Partly sunny, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Tonight
A chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 56. South wind around 5 mph becoming east in the evening. Chance of precipitation is 60%.
Wednesday
Showers and possibly a thunderstorm. High near 72. South southwest wind 5 to 10 mph. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. South wind 6 to 8 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 71. Southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 58. South wind 3 to 6 mph. Chance of precipitation is 40%.
Friday
A 20 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 79. South southwest wind 6 to 15 mph, with gusts as high as 23 mph.
Friday Night
A chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 62. South wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 71. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Saturday Night
A chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 50. West southwest wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers. Mostly cloudy, with a high near 67. Calm wind becoming south southwest around 6 mph in the morning.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 53. South southwest wind 3 to 5 mph.
Monday
A chance of showers. Mostly sunny, with a high near 73. West southwest wind 5 to 9 mph.
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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:
6:36 am CST Mar 3, 2026
Forecast Valid:
7am CST Mar 3, 2026-6pm CDT Mar 9, 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