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.

Fair

6°F

-14°C

Humidity 76%
Wind Speed W 7 mph
Barometer 30.17 in (1023.1 mb)
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 17 Mar 7:56 am CDT
Extended Forecast for

Nachusa IL

  • Today

    Today: Increasing clouds, with a high near 21. Wind chill values as low as -6. West northwest wind around 10 mph becoming southwest in the afternoon.

    High: 21 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow, mainly between 10pm and 4am. Temperature falling to near 18 by 8pm, then rising to around 25 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F⇑

    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow before 7am. Partly sunny, with a high near 39. South wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 39 °F

    Chance Snow
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. South wind around 5 mph.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 49. South wind around 5 mph becoming northwest in the afternoon. Winds could gust as high as 10 mph.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 21. Wind chill values as low as -6. West northwest wind around 10 mph becoming southwest in the afternoon.
Tonight
Snow, mainly between 10pm and 4am. Temperature falling to near 18 by 8pm, then rising to around 25 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Wednesday
A 30 percent chance of snow before 7am. Partly sunny, with a high near 39. South wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 34. South wind around 5 mph.
Thursday
Mostly sunny, with a high near 49. South wind around 5 mph becoming northwest in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Mostly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nachusa IL
 41.83°N 89.38°W
Last Update:
5:56 am CDT Mar 17, 2026
Forecast Valid:
8am CDT Mar 17, 2026-6pm CDT Mar 23, 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