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

51°F

11°C

Humidity 66%
Wind Speed Vrbl 7 mph
Barometer 30.01 in (1016.2 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 21 Apr 2:56 am CDT
Extended Forecast for

Nachusa IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 46. South wind around 15 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52. West wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. East wind around 5 mph becoming south in the morning. Winds could gust as high as 10 mph.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Breezy.

    High: 80 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 72.

    High: 72 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 46. South wind around 15 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Southwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 52. West wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.
Wednesday
Mostly sunny, with a high near 76. East wind around 5 mph becoming south in the morning. Winds could gust as high as 10 mph.
Wednesday Night
Partly cloudy, with a low around 58. South wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
Mostly sunny, with a high near 80. Breezy.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 49.
Monday
A chance of showers. Mostly cloudy, with a high near 66.
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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:
3:26 am CDT Apr 21, 2026
Forecast Valid:
3am CDT Apr 21, 2026-6pm CDT Apr 27, 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