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

Hazardous Weather Conditions

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

95°F

35°C

Humidity 47%
Wind Speed SW 13 G 20 mph
Barometer 29.94 in (1012.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 2 Sep 1:56 pm CDT
Extended Forecast for

Rock Falls IL

Heat Advisory September 2, 02:12pm until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 2, 02:12pm until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 93. Heat index values as high as 103. Southwest wind 5 to 10 mph.

    High: 93 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms between 1am and 3am. Mostly clear, with a low around 73. South wind around 5 mph. Chance of precipitation is 30%.

    Low: 73 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 94. Heat index values as high as 105. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 73. South wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 93. Heat index values as high as 103. Southwest wind 5 to 10 mph.
Thursday Night
A chance of showers and thunderstorms between 1am and 3am. Mostly clear, with a low around 73. South wind around 5 mph. Chance of precipitation is 30%.
Friday
Sunny, with a high near 93.
Friday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 66.
Labor Day
Mostly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rock Falls IL
 41.77°N 89.67°W (Elev. 650 ft)
Last Update:
1:26 pm CDT Sep 2, 2026
Forecast Valid:
2pm CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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