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

40°F

4°C

Humidity 97%
Wind Speed E 3 mph
Barometer 30.36 in (1028.4 mb)
Dewpoint 39°F (4°C)
Visibility 7.00 mi
Last update 10 Apr 11:56 pm CDT
Extended Forecast for

Nachusa IL

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 37. East southeast wind around 5 mph.

    Low: 37 °F

    Patchy Fog

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Patchy fog before 8am. Otherwise, increasing clouds, with a high near 55. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 55 °F

    Patchy Fog
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.

    High: 74 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 61. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely and
    Breezy

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 78. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82.

    High: 82 °F

    Partly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 37. East southeast wind around 5 mph.
Saturday
A 30 percent chance of showers after 1pm. Patchy fog before 8am. Otherwise, increasing clouds, with a high near 55. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 61. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Monday
A slight chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 78. Chance of precipitation is 20%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Tuesday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 62.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 75.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 55.
Thursday
A chance of showers. Mostly sunny, with a high near 77.
Thursday Night
A chance of showers. Partly cloudy, with a low around 56.
Friday
A chance of showers. Partly sunny, with a high near 74.
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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:
12:16 am CDT Apr 11, 2026
Forecast Valid:
12am CDT Apr 11, 2026-6pm CDT Apr 17, 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