National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

43°F

6°C

Humidity 53%
Wind Speed Vrbl 5 mph
Barometer 30.29 in (1026.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 28 Mar 10:56 pm CDT
Extended Forecast for

Nachusa IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. Breezy. Chance of precipitation is 70%.

    High: 77 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain and snow showers after 1am. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 64. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 48. South wind around 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 78. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 25 mph.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. Breezy. Chance of precipitation is 70%.
Tuesday Night
A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 48.
Wednesday Night
A chance of rain and snow showers after 1am. Mostly cloudy, with a low around 31.
Thursday
A chance of rain and snow showers before 1pm, then a chance of rain showers. Partly sunny, with a high near 44. Breezy.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 34.
Friday
A chance of showers. Mostly cloudy, with a high near 60.
Friday Night
A chance of showers. Mostly cloudy, with a low around 44.
Saturday
A chance of showers. Mostly cloudy, with a high near 59. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nachusa IL
 41.83°N 89.38°W
Last Update:
8:06 pm CDT Mar 28, 2026
Forecast Valid:
11pm CDT Mar 28, 2026-6pm CDT Apr 4, 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