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.

Mostly Cloudy

81°F

27°C

Humidity 49%
Wind Speed SW 14 G 21 mph
Barometer 29.93 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 15 Apr 4:35 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 64. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 64 °F

    Slight Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after noon. Partly sunny, with a high near 81. Southwest wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 59. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 61. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Southwest wind 11 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers before 1am. Mostly cloudy, with a low around 41. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 41 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 65. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 64. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Thursday
Showers likely, with thunderstorms also possible after noon. Partly sunny, with a high near 81. Southwest wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 59. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 61. South wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Southwest wind 11 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Saturday Night
A chance of showers before 1am. Mostly cloudy, with a low around 41. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 65. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 41. North northwest wind around 5 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 71. South wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 50. South wind around 6 mph.
Tuesday
Sunny, with a high near 77. Southwest wind 6 to 11 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harrisburg IL
 37.74°N 88.58°W
Last Update:
4:16 pm CDT Apr 15, 2026
Forecast Valid:
4pm CDT Apr 15, 2026-6pm CDT Apr 21, 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