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.

Fog/Mist

40°F

4°C

Humidity 92%
Wind Speed E 3 mph
Barometer 30.09 in
Dewpoint 38°F (3°C)
Visibility 4.00 mi
Last update 3 Mar 4:15 am CST
Extended Forecast for

Harrisburg IL

  • Overnight

    Overnight: Showers likely, mainly before 5am. Cloudy, with a steady temperature around 42. East wind 3 to 5 mph. Chance of precipitation is 70%.

    Low: 42 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely 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 60%.

    High: 71 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: 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 slight 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

Detailed Forecast

Overnight
Showers likely, mainly before 5am. Cloudy, with a steady temperature around 42. East wind 3 to 5 mph. Chance of precipitation is 70%.
Tuesday
Showers likely 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 60%.
Tuesday Night
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 slight 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. 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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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.55°W
Last Update:
3:41 am CST Mar 3, 2026
Forecast Valid:
4am 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