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Hazardous Weather Conditions

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

44°F

7°C

Humidity 51%
Wind Speed W 12 mph
Barometer 30.07 in (1018.6 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 18 Apr 7:56 pm CDT
Extended Forecast for

6 Miles SSE Harmon IL

Freeze Watch April 20, 12:00am until April 20, 09:00am
Frost Advisory April 19, 12:00am until April 19, 09:00am
Click here for hazard details and duration
Freeze Watch
Frost Advisory

  • Tonight

    Tonight: Patchy frost after midnight. Otherwise, clear, with a low around 33. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Clear then
    Patchy Frost

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 51. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 51 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Widespread frost after 1am. Otherwise, mostly clear, with a low around 30. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph.

    Low: 30 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 56. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph.

    High: 56 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy frost after midnight. Otherwise, clear, with a low around 33. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 51. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Widespread frost after 1am. Otherwise, mostly clear, with a low around 30. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 56. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph.
Monday Night
Partly cloudy, with a low around 45. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Showers likely. Mostly cloudy, with a low around 59.
Friday
A chance of showers. Mostly cloudy, with a high near 69.
Friday Night
A chance of showers. Mostly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 61.
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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:
7:01 pm CDT Apr 18, 2026
Forecast Valid:
8pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation