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.

Mostly Cloudy

77°F

25°C

Humidity 79%
Wind Speed Calm
Barometer 29.97 in (1014.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 2 Sep 7:56 am CDT
Extended Forecast for

Sterling IL

Heat Advisory September 2, 08:08am until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 2, 08:08am until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • Today

    High: 94 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 73. South wind around 5 mph becoming calm after midnight.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 73. Southeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 73 °F

    Mostly Clear
    then Chance
    T-storms

  • Friday

    Friday: A chance of thunderstorms before 7am. Mostly sunny, with a high near 91. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    T-storms then
    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • 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

Today
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 105. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 73. South wind around 5 mph becoming calm after midnight.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 73. Southeast wind around 5 mph. Chance of precipitation is 30%.
Friday
A chance of thunderstorms before 7am. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
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 65.
Labor Day
Mostly sunny, with a high near 83.
Monday Night
Mostly cloudy, with a low around 63.
Tuesday
Partly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sterling IL
 41.8°N 89.67°W (Elev. 656 ft)
Last Update:
2:36 am CDT Sep 2, 2026
Forecast Valid:
8am 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