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

78°F

26°C

Humidity 36%
Wind Speed S 14 G 21 mph
Barometer 30.07 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 12 Apr 3:35 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 84. South southwest wind around 17 mph, with gusts as high as 25 mph.

    High: 84 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 67. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 8am. Mostly sunny, with a high near 83. South southwest wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. South southwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 85 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 81. South southwest wind around 10 mph.

    High: 81 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 84. South southwest wind around 17 mph, with gusts as high as 25 mph.
Tonight
A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 67. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 8am. Mostly sunny, with a high near 83. South southwest wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 69. South southwest wind around 14 mph, with gusts as high as 23 mph.
Tuesday
Mostly sunny, with a high near 87. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South southwest wind around 10 mph, with gusts as high as 20 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South southwest wind around 10 mph.
Thursday Night
Mostly clear, with a low around 63. South southwest wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 88. Light south wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 67. South wind 7 to 10 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 10 to 14 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:
2:02 pm CDT Apr 12, 2026
Forecast Valid:
3pm CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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