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

31°F

-1°C

Humidity 79%
Wind Speed E 7 mph
Barometer 30.22 in (1023.7 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 2 Mar 10:56 pm CST
Extended Forecast for

Lanark IL

  • Tonight

    Tonight: A slight chance of rain between 4am and 5am. Cloudy, with a low around 33. Southeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain between 11am and noon. Cloudy, with a high near 45. East wind around 5 mph becoming calm in the afternoon.

    High: 45 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 31. Calm wind becoming northeast around 5 mph after midnight.

    Low: 31 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of freezing rain before 8am, then a chance of rain. Partly sunny, with a high near 53. East wind around 5 mph. Chance of precipitation is 40%.

    High: 53 °F

    Slight Chance
    Rain/Freezing
    Rain then
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly before noon. Cloudy, with a high near 56. Chance of precipitation is 70%.

    High: 56 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Rain. High near 64. Chance of precipitation is 90%.

    High: 64 °F

    Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Rain

Detailed Forecast

Tonight
A slight chance of rain between 4am and 5am. Cloudy, with a low around 33. Southeast wind around 5 mph. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of rain between 11am and noon. Cloudy, with a high near 45. East wind around 5 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 31. Calm wind becoming northeast around 5 mph after midnight.
Wednesday
A slight chance of freezing rain before 8am, then a chance of rain. Partly sunny, with a high near 53. East wind around 5 mph. Chance of precipitation is 40%.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Thursday
Rain likely, mainly before noon. Cloudy, with a high near 56. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 41.
Friday
Rain. High near 64. Chance of precipitation is 90%.
Friday Night
Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.
Saturday
A 30 percent chance of rain before noon. Mostly cloudy, with a high near 61.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lanark IL
 42.11°N 89.83°W (Elev. 883 ft)
Last Update:
11:16 pm CST Mar 2, 2026
Forecast Valid:
11pm CST Mar 2, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation