Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Thunderstorm in Vicinity

57°F

14°C

Humidity 90%
Wind Speed E 3 mph
Barometer 29.60 in (1002.1 mb)
Dewpoint 54°F (12°C)
Visibility 9.00 mi
Last update 17 Jun 7:56 am CDT
Extended Forecast for

Harmon IL

Flood Watch June 17, 10:00am until June 17, 05:00pm
Click here for hazard details and duration
Flood Watch
  • Today

    Today: Showers and possibly a thunderstorm before 4pm, then showers and thunderstorms likely, mainly between 4pm and 5pm. Some of the storms could be severe and produce heavy rainfall.  High near 73. Breezy, with a south southeast wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 73 °F

    Heavy Rain
    then Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Some of the storms could be severe.  Mostly cloudy, then gradually becoming clear, with a low around 57. West wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%.

    Low: 57 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 75. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. West northwest wind 5 to 10 mph.

    Low: 54 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 77. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am.  Mostly clear, with a low around 57.

    Low: 57 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 76.

    High: 76 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and possibly a thunderstorm before 4pm, then showers and thunderstorms likely, mainly between 4pm and 5pm. Some of the storms could be severe and produce heavy rainfall. High near 73. Breezy, with a south southeast wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Tonight
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming clear, with a low around 57. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 75. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 54. West northwest wind 5 to 10 mph.
Juneteenth
Sunny, with a high near 77. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 57.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 61.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Harmon IL
 41.73°N 89.56°W
7:56 am CDT Jun 17, 2026
8am CDT Jun 17, 2026-6pm CDT Jun 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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