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Deer Park, Illinois Weather Forecast
Deer Park, Illinois Weather
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Weather Forecast for Deer Park, Illinois : LaSalle County
Issued: 3:11 pm CST Dec 6, 2025 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Cloudy on This Afternoon 90% chance of snow on Tonight 40% chance of snow on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday 20% chance of snow on Thursday Partly Sunny on Friday
High: 32°F Low: 27°F High: 15 °F High: 22°F High: 38°F High: 36°F High: 26°F High: 15°F
Low: 6 °F Low: 13°F Low: 33°F Low: 18°F Low: 9°F  
Cloudy Snow Snow Partly Sunny Mostly Cloudy Mostly Cloudy Snow Partly Sunny
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Current Conditions at
PERU - (KVYS)
30°
Cloudy
as of 3:15 PM CST
Rel. Humidity: 80%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: MVFR
Wind Data
3 MPH
330° Northwest
Cloud Level(s): Solid Overcast at 2300ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
32°
Cloudy
as of 3:15 PM CST
Rel. Humidity: 80%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 2500ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
32°
Cloudy
as of 3:15 PM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: MVFR
Wind Data
3 MPH
120° Southeast
Cloud Level(s): Solid Overcast at 2700ft
Cloudy on This Afternoon This Afternoon... Cloudy, with a high near 32. Calm wind becoming south southeast around 5 mph.

90% chance of snow Tonight Tonight... Snow, mainly after 10pm. Low around 27. East southeast wind 5 to 10 mph becoming north northeast after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

40% chance of snow Sunday Sunday... A 40 percent chance of snow before 9am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 15 by 5pm. North wind 10 to 15 mph, with gusts as high as 20 mph.

Increasing Clouds on Sunday Night Sunday Night... Increasing clouds, with a low around 6. Wind chill values as low as -5. North wind 5 to 10 mph becoming light north northeast after midnight. Winds could gust as high as 15 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 22. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.

20% chance of snow Monday Night Monday Night... A 20 percent chance of snow. Mostly cloudy, with a low around 13.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 38.

70% chance of rain Tuesday Night Tuesday Night... Rain likely, mainly before midnight. Mostly cloudy, with a low around 33. Breezy.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 36. Breezy.

20% chance of snow Wednesday Night Wednesday Night... A chance of snow after midnight. Mostly cloudy, with a low around 18.

20% chance of snow Thursday Thursday... A chance of snow. Mostly cloudy, with a high near 26.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 9.

Partly Sunny on Friday Friday... Partly sunny, with a high near 15.

Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:08 AM
Sunset: 4:27 PM
Civil Sunrise:06:37 AM
Civil Sunset: 4:58 PM
Nautical Sunrise: 06:02 AM
Nautical Sunset: 5:32 PM
Astro Sunrise: 05:29 AM
Astro Sunset: 6:06 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.