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.

Partly Cloudy

86°F

30°C

Humidity 69%
Wind Speed SW 9 mph
Barometer 29.93 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 15 Oct 2:55 pm CDT
Extended Forecast for

Harrisburg IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 88. Southwest wind around 13 mph, with gusts as high as 20 mph.

    High: 88 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 3am, then a slight chance of showers between 3am and 5am. Increasing clouds, with a low around 50. West southwest wind 8 to 16 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Friday

    Friday: A 10 percent chance of showers before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 59. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 28 mph.

    High: 59 °F

    Slight Chance
    Showers then
    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. North wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60. North northeast wind 8 to 11 mph.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 5am. Otherwise, clear, with a low around 35. Calm wind.

    Low: 35 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 67 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71. Calm wind becoming south around 5 mph.

    High: 71 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 88. Southwest wind around 13 mph, with gusts as high as 20 mph.
Tonight
Showers and thunderstorms likely before 3am, then a slight chance of showers between 3am and 5am. Increasing clouds, with a low around 50. West southwest wind 8 to 16 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.
Friday
A 10 percent chance of showers before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 59. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 40. North wind 10 to 14 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 60. North northeast wind 8 to 11 mph.
Saturday Night
Areas of frost after 5am. Otherwise, clear, with a low around 35. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 39. Calm wind.
Monday
Sunny, with a high near 71. Calm wind becoming south around 5 mph.
Monday Night
Partly cloudy, with a low around 43. Calm wind.
Tuesday
Sunny, with a high near 75. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 45. Calm wind.
Wednesday
Sunny, with a high near 77. Light and variable wind.
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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:
1:51 pm CDT Oct 15, 2026
Forecast Valid:
3pm CDT Oct 15, 2026-6pm CDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation