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

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

58°F

14°C

Humidity 93%
Wind Speed Vrbl 6 mph
Barometer 29.62 in (1002.8 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 15 Nov 3:56 am CST
Extended Forecast for

Harmon IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 68. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 68 °F

    Partly Sunny
    then Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 32. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 50. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 50 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. West northwest wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 49. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Rain likely. Cloudy, with a low around 36. Chance of precipitation is 70%.

    Low: 36 °F

    Rain Likely

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 68. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 32. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 50. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 27. West northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 49. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Monday Night
Rain likely. Cloudy, with a low around 36. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
A chance of rain after midnight. Mostly cloudy, with a low around 36.
Thursday
Rain likely. Mostly cloudy, with a high near 54.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Mostly cloudy, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harmon IL
 41.73°N 89.56°W
Last Update:
3:46 am CST Nov 15, 2025
Forecast Valid:
5am CST Nov 15, 2025-6pm CST Nov 21, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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