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Sunnyside, Illinois Weather Forecast
Sunnyside, Illinois Weather
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Weather Forecast for Sunnyside, Illinois : Stephenson County
Issued: 11:46 pm CST Dec 14, 2025 Latitude: 42.3566808 Longitude: -89.9137337 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Cloudy on Overnight Partly Sunny on Monday Partly Sunny on Tuesday Mostly Sunny on Wednesday 50% chance of rain on Thursday Partly Sunny on Friday Mostly Cloudy on Saturday Mostly Sunny on Sunday
Low: -3°F High: 25°F High: 35°F High: 37°F High: 41°F High: 25°F High: 39°F High: 29°F
Low: 13°F Low: 26°F Low: 29°F Low: 3°F Low: 18°F Low: 18°F  
Mostly Cloudy Partly Sunny Partly Sunny Mostly Sunny Rain Partly Sunny Mostly Cloudy Mostly Sunny
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Current Conditions at
ALBERTUS AIRPORT - (KFEP)
Feels like -11°F
Clear
as of 2:35 AM CST
Rel. Humidity: 71%
Dew Point: -2°F
Visibility: 10 Miles
Pressure: 30.37 in.
Flight Rule: VFR
Wind Data
13 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
SAVANNA - (KSFY)
Feels like -9°F
Clear
as of 2:35 AM CST
Rel. Humidity: 65%
Dew Point: -4°F
Visibility: 10 Miles
Pressure: 30.38 in.
Flight Rule: VFR
Wind Data
10 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
MONROE - (KEFT)
Feels like -11°F
Clear
as of 2:35 AM CST
Rel. Humidity: 71%
Dew Point: -2°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
13 MPH
200° South
Cloud Level(s): Clear
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around -3. Wind chill values as low as -15. South wind around 15 mph, with gusts as high as 25 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 25. Wind chill values as low as -10. Breezy, with a southwest wind 15 to 20 mph decreasing to 5 to 10 mph in the afternoon. Winds could gust as high as 30 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 13. West wind around 5 mph becoming calm.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 35. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 26.

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

50% chance of rain Wednesday Night Wednesday Night... A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 29.

50% chance of rain Thursday Thursday... A 50 percent chance of rain before noon. Mostly cloudy, with a high near 41. Breezy.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 3.

Partly Sunny on Friday Friday... Partly sunny, with a high near 25.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 18.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 39.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 18.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 29.

Sun Almanac for Sunnyside, Illinois
Sunrise: 07:22 AM
Sunset: 4:28 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:00 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:35 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:09 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.