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

53°F

12°C

Humidity 83%
Wind Speed SW 9 mph
Barometer 29.82 in (1009.8 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 20 Mar 8:56 am CDT
Extended Forecast for

Nachusa IL

  • Today

    Today: Partly sunny, with a high near 70. West southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. North northeast wind 5 to 10 mph becoming east southeast after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 69. Southeast wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 69 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 64. Breezy, with a west southwest wind 10 to 20 mph becoming north northeast in the morning. Winds could gust as high as 25 mph.

    High: 64 °F

    Slight Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 70. West southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly cloudy, with a low around 40. North northeast wind 5 to 10 mph becoming east southeast after midnight.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 69. Southeast wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 52. South southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 64. Breezy, with a west southwest wind 10 to 20 mph becoming north northeast in the morning. Winds could gust as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
Sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Mostly cloudy, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nachusa IL
 41.83°N 89.38°W
Last Update:
9:01 am CDT Mar 20, 2026
Forecast Valid:
9am CDT Mar 20, 2026-6pm CDT Mar 26, 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation