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.

Fair

67°F

19°C

Humidity 76%
Wind Speed SW 9 mph
Barometer 29.96 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 1 Apr 4:55 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 80. Southwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 80 °F

    Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 66. South wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Breezy, with a south wind 14 to 24 mph, with gusts as high as 38 mph.

    High: 81 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. South southwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 71. South southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    High: 71 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 1am. Partly cloudy, with a low around 41. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 58. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 58 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 80. Southwest wind 7 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Tonight
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 66. South wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Breezy, with a south wind 14 to 24 mph, with gusts as high as 38 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. South southwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Friday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Saturday
Showers and possibly a thunderstorm. High near 71. South southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday Night
A chance of showers, mainly before 1am. Partly cloudy, with a low around 41. Northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 58. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 36. North northwest wind 5 to 8 mph becoming calm after midnight.
Monday
Sunny, with a high near 64. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 42. Calm wind.
Tuesday
Sunny, with a high near 63. North wind 3 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
3:22 am CDT Apr 1, 2026
Forecast Valid:
5am CDT Apr 1, 2026-6pm CDT Apr 7, 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