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Harmon, Illinois Weather Forecast
Harmon, Illinois Weather
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Weather Forecast for Harmon, Illinois : Lee County
Issued: 5:11 am CST Nov 5, 2025 Latitude: 41.722811 Longitude: -89.5539905 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Veterans Day
Partly Sunny on Today Mostly Clear on Tonight Increasing Clouds on Thursday Mostly Sunny on Friday 50% chance of rain on Saturday Mostly Sunny on Sunday Sunny on Monday Partly Sunny on Veterans Day
High: 60°F Low: 31°F High: 59°F High: 64°F High: 50°F High: 37°F High: 37°F High: 46°F
Low: 48°F Low: 34°F Low: 27°F Low: 19°F Low: 20°F  
Partly Sunny Mostly Clear Increasing Clouds Mostly Sunny Rain Mostly Sunny Sunny Partly Sunny
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Current Conditions at
STERLING ROCK - (KSQI)
Clear
as of 4:56 AM CST
Wind Data
Calm
Current Conditions at
PERU - (KVYS)
55°
Clear
as of 4:55 AM CST
Rel. Humidity: 66%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
13 MPH
230° Southwest
Cloud Level(s): Clear
Partly Sunny on Today Today... Partly sunny, then gradually becoming sunny, with a high near 60. Breezy, with a west southwest wind 10 to 15 mph becoming northwest 15 to 20 mph. Winds could gust as high as 35 mph.

Mostly Clear on Tonight Tonight... Mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming light and variable in the evening.

Increasing Clouds on Thursday Thursday... Increasing clouds, with a high near 59. Light southeast wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

70% chance of rain Thursday Night Thursday Night... Showers likely, mainly after midnight. Cloudy, with a low around 48. South southeast wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 64. West wind 10 to 15 mph, with gusts as high as 25 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 34.

50% chance of rain Saturday Saturday... A 50 percent chance of rain after noon. Partly sunny, with a high near 50.

20% chance of rain Saturday Night Saturday Night... A chance of rain before midnight. Mostly cloudy, with a low around 27.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 37.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 19.

Sunny on Monday Monday... Sunny, with a high near 37.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 20.

Partly Sunny on Veterans Day Veterans Day... Partly sunny, with a high near 46.

Sun Almanac for Harmon, Illinois
Sunrise: 06:36 AM
Sunset: 4:48 PM
Civil Sunrise:06:07 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 05:34 AM
Nautical Sunset: 5:50 PM
Astro Sunrise: 05:01 AM
Astro Sunset: 6:22 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.