National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Harrisburg-Raleigh Airport (KHSB)

Lat: 37.81°NLon: 88.54°WElev: 387ft.

Fair

44°F

7°C

Humidity 92%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 2 May 12:35 am CDT
Extended Forecast for

Cave-In-Rock IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Partly sunny, with a high near 63. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 30%.

    High: 63 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. North wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Light south southwest wind becoming southwest 5 to 10 mph in the morning.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Partly cloudy, with a low around 56. Southwest wind around 7 mph. Chance of precipitation is 30%.

    Low: 56 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 79. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 58. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 70. South southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 70 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Mostly cloudy, with a low around 51. South southwest wind 7 to 9 mph becoming northwest after midnight. Winds could gust as high as 18 mph.

    Low: 51 °F

    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 45. Calm wind.
Saturday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Partly sunny, with a high near 63. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 38. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 69. Light south southwest wind becoming southwest 5 to 10 mph in the morning.
Sunday Night
A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Partly cloudy, with a low around 56. Southwest wind around 7 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 79. South southwest wind 7 to 13 mph, with gusts as high as 22 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 58. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 70. South southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Mostly cloudy, with a low around 51. South southwest wind 7 to 9 mph becoming northwest after midnight. Winds could gust as high as 18 mph.
Wednesday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 67. North wind 6 to 8 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46. North wind around 6 mph.
Thursday
Mostly sunny, with a high near 66. Northwest wind 5 to 9 mph.
Thursday Night
Mostly clear, with a low around 45. Northwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 71. Calm wind becoming west southwest 5 to 8 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cave-In-Rock IL
 37.46°N 88.18°W
Last Update:
10:41 pm CDT May 1, 2026
Forecast Valid:
12am CDT May 2, 2026-6pm CDT May 8, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation