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

43°F

6°C

Humidity 80%
Wind Speed Calm
Barometer 29.84 in (1010.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 7 Jan 4:56 pm CST
Extended Forecast for

Rock Falls IL

  • Tonight

    Tonight: Partly cloudy, with a low around 38. South wind 5 to 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain, mainly after 11am. High near 54. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain, mainly before midnight. Low around 40. Southeast wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    Low: 40 °F

    Rain then
    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 45. West wind 5 to 10 mph becoming north in the afternoon.

    High: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 33. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 33 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Saturday

    Saturday: Snow likely, mainly before noon. Mostly cloudy, with a high near 36. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 38. South wind 5 to 10 mph.
Thursday
Rain, mainly after 11am. High near 54. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain, mainly before midnight. Low around 40. Southeast wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Friday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 45. West wind 5 to 10 mph becoming north in the afternoon.
Friday Night
A chance of rain after midnight, mixing with snow after 3am. Mostly cloudy, with a low around 33. Chance of precipitation is 50%. Little or no snow accumulation expected.
Saturday
Snow likely, mainly before noon. Mostly cloudy, with a high near 36. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Mostly clear, with a low around 20.
Monday
Mostly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
Mostly cloudy, with a high near 41.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rock Falls IL
 41.77°N 89.67°W (Elev. 650 ft)
Last Update:
3:16 pm CST Jan 7, 2026
Forecast Valid:
5pm CST Jan 7, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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