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

21°F

-6°C

Humidity 54%
Wind Speed SW 6 mph
Barometer 30.18 in (1023.1 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 17 Mar 4:56 pm CDT
Extended Forecast for

Nachusa IL

  • Tonight

    Tonight: Snow, mainly before 5am. Temperature falling to near 19 by 8pm, then rising to around 24 during the remainder of the night. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 19 °F⇑

    Snow Likely
    then Snow

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 39. South southeast wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 39 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 1am. Increasing clouds, with a low around 33. South wind around 5 mph, with gusts as high as 10 mph.

    Low: 33 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 48. South wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34. North northeast wind around 5 mph becoming south southeast after midnight.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow, mainly before 5am. Temperature falling to near 19 by 8pm, then rising to around 24 during the remainder of the night. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 39. South southeast wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
A 30 percent chance of showers after 1am. Increasing clouds, with a low around 33. South wind around 5 mph, with gusts as high as 10 mph.
Thursday
Mostly sunny, with a high near 48. South wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Mostly cloudy, with a low around 34. North northeast wind around 5 mph becoming south southeast after midnight.
Friday
Partly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 28.
Monday
Partly sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nachusa IL
 41.83°N 89.38°W
Last Update:
3:46 pm CDT Mar 17, 2026
Forecast Valid:
5pm CDT Mar 17, 2026-6pm CDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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