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

29°F

-2°C

Humidity 47%
Wind Speed NW 5 mph
Barometer 30.50 in (1033.7 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 23 Feb 12:56 pm CST
Extended Forecast for

Shannon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 26. Northwest wind 5 to 10 mph.

    High: 26 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 16. Northwest wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph.

    Low: 16 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm. Cloudy, with a high near 43. Breezy, with a south wind 15 to 25 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 20%.

    High: 43 °F

    Breezy.
    Cloudy then
    Slight Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 18. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow before noon. Partly sunny, with a high near 37.

    High: 37 °F

    Chance Snow
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 26. Northwest wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 16. Northwest wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph.
Tuesday
A slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm. Cloudy, with a high near 43. Breezy, with a south wind 15 to 25 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 18. West wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 33.
Wednesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18.
Thursday
A 30 percent chance of snow before noon. Partly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 21.
Friday
Sunny, with a high near 52.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shannon IL
 42.15°N 89.74°W (Elev. 928 ft)
Last Update:
10:31 am CST Feb 23, 2026
Forecast Valid:
1pm CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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