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.

Thunderstorm in Vicinity Light Rain

58°F

14°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.74 in (1006.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 16 Apr 1:56 am CDT
Extended Forecast for

Nachusa IL

  • Overnight

    Overnight: A chance of showers and thunderstorms. Cloudy, with a steady temperature around 62. South southwest wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 72. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 72 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. West northwest wind around 5 mph becoming east southeast in the evening. Winds could gust as high as 10 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 81. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms and
    Breezy

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 7pm, then showers and possibly a thunderstorm between 7pm and 1am, then showers likely after 1am. Low around 42. South wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    Low: 42 °F

    T-storms then
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 9am. Mostly sunny, with a high near 50.

    High: 50 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 2am. Otherwise, mostly clear, with a low around 32.

    Low: 32 °F

    Partly Cloudy
    then Areas
    Frost

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Cloudy, with a steady temperature around 62. South southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 72. West wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 53. West northwest wind around 5 mph becoming east southeast in the evening. Winds could gust as high as 10 mph.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 81. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
A chance of showers and thunderstorms before 7pm, then showers and possibly a thunderstorm between 7pm and 1am, then showers likely after 1am. Low around 42. South wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Saturday
A 20 percent chance of showers before 9am. Mostly sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 52.
Sunday Night
Areas of frost after 2am. Otherwise, mostly clear, with a low around 32.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nachusa IL
 41.83°N 89.38°W
Last Update:
2:31 am CDT Apr 16, 2026
Forecast Valid:
2am CDT Apr 16, 2026-6pm CDT Apr 22, 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