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.

Overcast

74°F

23°C

Humidity 100%
Wind Speed NE 6 mph
Barometer 30.10 in (1019.0 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 14 Aug 7:56 pm CDT
Extended Forecast for

Prophetstown IL

Flood Watch August 14, 08:38pm until August 15, 10:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 14, 08:38pm until August 15, 10:00am

    NOW until 10:00am Sat

    Flood Watch

  • Tonight

    Low: 70 °F

    Chance
    T-storms then
    Heavy Rain

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 10am. Some of the storms could produce heavy rainfall. High near 88. Heat index values as high as 106. Southeast wind around 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 88 °F

    Heavy Rain
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72. West wind around 5 mph. New rainfall amounts between a quarter and half of an inch possible.

    Low: 72 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. West wind 5 to 10 mph.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Some of the storms could produce heavy rainfall. Low around 70. East wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Saturday
Showers and thunderstorms, mainly before 10am. Some of the storms could produce heavy rainfall. High near 88. Heat index values as high as 106. Southeast wind around 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72. West wind around 5 mph. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. West wind 5 to 10 mph.
Sunday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 63. Chance of precipitation is 30%.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prophetstown IL
 41.67°N 89.94°W (Elev. 604 ft)
Last Update:
8:26 pm CDT Aug 14, 2026
Forecast Valid:
8pm CDT Aug 14, 2026-6pm CDT Aug 21, 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