Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Thunderstorm Heavy Rain Fog/Mist

70°F

21°C

Humidity 100%
Wind Speed W 18 G 23 mph
Barometer 29.90 in (1012.1 mb)
Dewpoint 70°F (21°C)
Visibility 6.00 mi
Last update 20 Sep 1:56 am CDT
Extended Forecast for

3 Miles SSE Rock Falls IL

Flood Watch September 20, 03:33am until September 20, 01:00pm
Flash Flood Warning September 20, 03:33am until September 20, 07:30am
Click here for hazard details and duration
Flood Watch
Flash Flood Warning
  •  
    Flood Watch September 20, 03:33am until September 20, 01:00pm
    Flash Flood Warning September 20, 03:33am until September 20, 07:30am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 63 °F

    Heavy Rain
    and Patchy
    Fog

  • Sunday

    Sunday: Occasional showers and thunderstorms before 3pm, then a chance of showers. Some of the storms could produce heavy rainfall.  Patchy fog before 9am. High near 68. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 68 °F

    Heavy Rain
    and Patchy
    Fog then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of showers before 1am, then a slight chance of showers after 2am.  Mostly cloudy, with a low around 56. Northeast wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers

  • Monday

    Monday: A chance of showers before noon, then a slight chance of showers after 4pm.  Cloudy, with a high near 65. Northeast wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%.

    High: 65 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers after 1am.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Overnight
Occasional showers and thunderstorms. Some of the storms could produce heavy rainfall. Patchy fog. Low around 63. Northeast wind around 5 mph becoming north. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Sunday
Occasional showers and thunderstorms before 3pm, then a chance of showers. Some of the storms could produce heavy rainfall. Patchy fog before 9am. High near 68. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A slight chance of showers before 1am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 56. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday
A chance of showers before noon, then a slight chance of showers after 4pm. Cloudy, with a high near 65. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 51.
Friday
Partly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Partly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rock Falls IL
 41.75°N 89.68°W (Elev. 650 ft)
3:26 am CDT Sep 20, 2026
3am CDT Sep 20, 2026-6pm CDT Sep 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database