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.

Overcast

45°F

7°C

Humidity 96%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 2 May 5:55 am CDT
Extended Forecast for

Harrisburg IL

  • Today

    Today: A chance of rain and thunderstorms before 4pm, then a chance of showers, mainly between 4pm and 5pm. Partly sunny, with a high near 61. Calm wind becoming north 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 61 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of sprinkles before 7pm. Mostly clear, with a low around 38. North wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Chance
    Sprinkles

  • Sunday

    Sunday: Sunny, with a high near 70. Light south southwest wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 70 °F

    Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. South southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 80 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60. South southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 60 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 72 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 52. South southwest wind 10 to 16 mph becoming north after midnight. Winds could gust as high as 25 mph.

    Low: 52 °F

    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 62. North northeast wind around 8 mph.

    High: 62 °F

    Showers
    Likely

Detailed Forecast

Today
A chance of rain and thunderstorms before 4pm, then a chance of showers, mainly between 4pm and 5pm. Partly sunny, with a high near 61. Calm wind becoming north 5 to 9 mph in the morning. Chance of precipitation is 30%.
Tonight
A chance of sprinkles before 7pm. Mostly clear, with a low around 38. North wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 70. Light south southwest wind becoming southwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Monday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. South southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
Showers and possibly a thunderstorm. High near 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 52. South southwest wind 10 to 16 mph becoming north after midnight. Winds could gust as high as 25 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 62. North northeast wind around 8 mph.
Wednesday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 46. North wind around 8 mph.
Thursday
A slight chance of showers. Mostly sunny, with a high near 64. Northwest wind 7 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 43. Northwest wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 70. Light southwest wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 18 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:
5:46 am CDT May 2, 2026
Forecast Valid:
6am CDT May 2, 2026-6pm CDT May 8, 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