Harrison, Illinois Weather
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Weather Forecast for Harrison, Illinois : Winnebago County
Issued: 8:42 pm CDT Jun 5, 2025 Latitude: 42.4272375 Longitude: -89.1915002 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Cloudy on Tonight Partly Sunny on Friday Mostly Cloudy on Saturday 70% chance of thunderstorms on Sunday 20% chance of rain on Monday Mostly Sunny on Tuesday Sunny on Wednesday Sunny on Thursday
Low: 56°F High: 77°F High: 75°F High: 74°F High: 72°F High: 75°F High: 80°F High: 83°F
Low: 53°F Low: 56°F Low: 52°F Low: 50°F Low: 54°F Low: 58°F  
Mostly Cloudy Partly Sunny Mostly Cloudy Thunderstorms Rain Mostly Sunny Sunny Sunny
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Current Conditions at
JANESVILLE - (KJVL)
61°
Clear
as of 11:10 PM CDST
Rel. Humidity: 77%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ROCKFORD - (KRFD)
61°
Mostly Cloudy
as of 10:54 PM CDST
Rel. Humidity: 77%
Dew Point: 54°F
Visibility: 7 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
3 MPH
110° East
Cloud Level(s): Broken at 25000ft
Current Conditions at
MONROE - (KEFT)
64°
Clear
as of 11:15 PM CDST
Rel. Humidity: 52%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
6 MPH
120° Southeast
Cloud Level(s): Clear
Mostly Cloudy on Tonight Tonight... Widespread haze. Mostly cloudy, with a low around 56. East wind around 5 mph becoming calm.

Partly Sunny on Friday Friday... Widespread haze before 8am. Partly sunny, with a high near 77. Calm wind becoming northeast around 5 mph in the afternoon.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 53. Northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 75. East southeast wind around 5 mph, with gusts as high as 10 mph.

20% chance of rain Saturday Night Saturday Night... A 20 percent chance of showers. Mostly cloudy, with a low around 56. East wind around 5 mph.

70% chance of thunderstorms Sunday Sunday... A chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 74. Chance of precipitation is 70%.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 52.

20% chance of rain Monday Monday... A chance of showers after 1pm. Mostly sunny, with a high near 72.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 50.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 75.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 54.

Sunny on Wednesday Wednesday... Sunny, with a high near 80.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 58.

Sunny on Thursday Thursday... Sunny, with a high near 83.

Current Radar Image


Sun Almanac for Harrison, Illinois
Sunrise: 05:20 AM
Sunset: 8:31 PM
Civil Sunrise:04:46 AM
Civil Sunset: 9:05 PM
Nautical Sunrise: 04:02 AM
Nautical Sunset: 9:50 PM
Astro Sunrise: 03:08 AM
Astro Sunset: 10:43 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.