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

65°F

18°C

Humidity 90%
Wind Speed NW 15 G 22 mph
Barometer 29.81 in (1009.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 31 Mar 2:56 pm CDT
Extended Forecast for

Nachusa IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 65. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 3am. Mostly cloudy, with a low around 38. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 38 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 11am, then a chance of showers after 2pm. Mostly cloudy, with a high near 48. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 41. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 41 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 73. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%.

    High: 73 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 44. Breezy.

    Low: 44 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 46.

    Low: 46 °F

    T-storms

  • Saturday

    Saturday: A chance of showers. Mostly cloudy, with a high near 58. Breezy.

    High: 58 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 65. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 3am. Mostly cloudy, with a low around 38. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of showers before 11am, then a chance of showers after 2pm. Mostly cloudy, with a high near 48. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 41. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Thursday
Showers and possibly a thunderstorm. High near 73. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%.
Thursday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 44. Breezy.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72.
Friday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 46.
Saturday
A chance of showers. Mostly cloudy, with a high near 58. Breezy.
Saturday Night
Mostly cloudy, with a low around 31. Blustery.
Sunday
Mostly sunny, with a high near 50. Breezy.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 57.
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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:
2:36 pm CDT Mar 31, 2026
Forecast Valid:
3pm CDT Mar 31, 2026-6pm CDT Apr 6, 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