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

85°F

29°C

Humidity 39%
Wind Speed SW 18 G 32 mph
Barometer 29.79 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 26 Mar 4:35 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 87. Breezy, with a southwest wind around 22 mph, with gusts as high as 32 mph.

    High: 87 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 45. South southwest wind 14 to 17 mph becoming north after midnight. Winds could gust as high as 31 mph.

    Low: 45 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 56. North wind 15 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 56 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 32. North wind 6 to 13 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 57. North northeast wind around 6 mph becoming east southeast in the afternoon.

    High: 57 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. Light southeast wind.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. South wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 87. Breezy, with a southwest wind around 22 mph, with gusts as high as 32 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 45. South southwest wind 14 to 17 mph becoming north after midnight. Winds could gust as high as 31 mph.
Friday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 56. North wind 15 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Friday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 32. North wind 6 to 13 mph, with gusts as high as 22 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 57. North northeast wind around 6 mph becoming east southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 39. Light southeast wind.
Sunday
Mostly sunny, with a high near 69. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 58. South wind 7 to 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 81. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 84. South southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 61. South southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. South southwest wind 14 to 17 mph, with gusts as high as 28 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:
4:02 pm CDT Mar 26, 2026
Forecast Valid:
4pm CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation