Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.79 in (1008.4 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 15 Apr 9:56 am CDT
Extended Forecast for

Nachusa IL

Flood Watch April 15, 10:30am until April 16, 01:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch April 15, 10:30am until April 16, 01:00am

    NOW until 1:00am Thu

    Flood Watch

  • Today

    High: 74 °F

    Showers
    Likely then
    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 10pm, then showers and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am.  Low around 58. South wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 58 °F

    T-storms

  • Thursday

    Thursday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm.  Cloudy, then gradually becoming mostly sunny, with a high near 71. West southwest wind around 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 50%.

    High: 71 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. West northwest wind around 5 mph becoming south southeast after midnight. Winds could gust as high as 10 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 80. South wind 5 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 20%.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm.  Low around 46. Chance of precipitation is 90%.

    Low: 46 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers.  Partly sunny, with a high near 58. Breezy.

    High: 58 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 4pm, then showers and thunderstorms likely after 4pm. Cloudy, with a high near 74. South southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely before 10pm, then showers and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Low around 58. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Thursday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 71. West southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.
Thursday Night
Mostly clear, with a low around 54. West northwest wind around 5 mph becoming south southeast after midnight. Winds could gust as high as 10 mph.
Friday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday Night
Showers and possibly a thunderstorm. Low around 46. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 58. Breezy.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Sunny, with a high near 52.
Sunday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 33.
Monday
Patchy frost. Otherwise, sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Nachusa IL
 41.83°N 89.38°W
9:51 am CDT Apr 15, 2026
10am CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
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