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.

Light Snow

21°F

-6°C

Humidity 88%
Wind Speed Vrbl 6 mph
Barometer 30.11 in (1020.6 mb)
Dewpoint 18°F (-8°C)
Visibility 9.00 mi
Wind Chill13°F (-11°C)
Last update 17 Mar 11:56 pm CDT
Extended Forecast for

6 Miles SSE Harmon IL

  • Overnight

    Overnight: Snow, mainly before 4am. Temperature rising to around 24 by 4am. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 21 °F⇑

    Snow

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 41. South southeast wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 41 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Increasing clouds, with a low around 34. South wind around 5 mph.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 50. South wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 36. North wind around 5 mph becoming south southeast after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow, mainly before 4am. Temperature rising to around 24 by 4am. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 41. South southeast wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Increasing clouds, with a low around 34. South wind around 5 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 50. South wind around 5 mph becoming north in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Mostly cloudy, with a low around 36. North wind around 5 mph becoming south southeast after midnight.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 29.
Monday
Partly sunny, with a high near 45.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE Harmon IL
 41.64°N 89.51°W
Last Update:
8:51 pm CDT Mar 17, 2026
Forecast Valid:
12am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation