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.

Fog/Mist

66°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 29.89 in (1011.7 mb)
Dewpoint 66°F (19°C)
Visibility 0.75 mi
Last update 13 Aug 2:56 am CDT
Extended Forecast for

Sterling IL

Flood Watch August 13, 07:00pm until August 14, 01:00pm
Dense Fog Advisory until August 13, 09:00am
Click here for hazard details and duration
Flood Watch
Dense Fog Advisory
  •  
    Dense Fog Advisory until August 13, 09:00am

    NOW until 9:00am Thu

    Dense Fog Advisory

  • Overnight

    Low: 66 °F

    Dense Fog

  • Thursday

    Thursday: Occasional showers and thunderstorms, mainly before 3pm. Widespread dense fog, mainly before 8am. High near 79. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 79 °F

    Chance
    T-storms and
    Dense Fog
    then T-storms

  • Thursday Night

    Thursday Night: Occasional showers and thunderstorms, mainly after 11pm. Low around 66. East wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    Low: 66 °F

    T-storms

  • Friday

    Friday: Showers and thunderstorms likely before noon, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm. Mostly cloudy, with a high near 88. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Overnight
Widespread dense fog. Otherwise, mostly cloudy, with a low around 66. East wind around 5 mph.
Thursday
Occasional showers and thunderstorms, mainly before 3pm. Widespread dense fog, mainly before 8am. High near 79. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Occasional showers and thunderstorms, mainly after 11pm. Low around 66. East wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers and thunderstorms likely before noon, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm. Mostly cloudy, with a high near 88. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sterling IL
 41.8°N 89.7°W (Elev. 669 ft)
Last Update:
3:46 am CDT Aug 13, 2026
Forecast Valid:
3am CDT Aug 13, 2026-6pm CDT Aug 19, 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