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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: 3:41 am CST Nov 29, 2025 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
100% chance of snow on Overnight 100% chance of blowing snow on Saturday 20% chance of blowing snow on Sunday 50% chance of snow on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday Mostly Cloudy on Friday
Low: 27°F High: 32°F High: 27°F High: 23°F High: 21°F High: 29°F High: 16°F High: 28°F
Low: 23°F Low: 8 °F Low: 13°F Low: 13°F Low: 3°F Low: 4°F  
Snow Blowing Snow Blowing Snow Snow Partly Sunny Mostly Cloudy Mostly Sunny Mostly Cloudy
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Current Conditions at
PERU - (KVYS)
27°
Feels like 17°F
Cloudy
Snow
as of 3:55 AM CST
Rel. Humidity: 92%
Dew Point: 25°F
Visibility: 1 Miles
Pressure: 30.35 in.
Flight Rule: IFR
Wind Data
9 MPH
130° Southeast
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
27°
Feels like 16°F
Cloudy
Light Snow
as of 3:55 AM CST
Rel. Humidity: 86%
Dew Point: 23°F
Visibility: 1 1/2 Miles
Pressure: 30.33 in.
Flight Rule: IFR
Wind Data
12 MPH
140° Southeast
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
27°
Mostly Cloudy
Light Snow
as of 3:55 AM CST
Rel. Humidity: 86%
Dew Point: 23°F
Visibility: 5 Miles
Pressure: 30.37 in.
Flight Rule: MVFR
Wind Data
7 MPH
160° South
Cloud Level(s): Scattered at 2400ft, Broken at 2800ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
27°
Feels like 17°F
Cloudy
Light Snow
as of 3:55 AM CST
Rel. Humidity: 92%
Dew Point: 25°F
Visibility: 1 1/2 Miles
Pressure: 30.38 in.
Flight Rule: IFR
Wind Data
9 MPH
140° Southeast
Cloud Level(s): Solid Overcast at 1200ft
100% chance of snow Overnight Overnight... Snow. Low around 27. Southeast wind 5 to 10 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
100% chance of blowing snow Saturday Saturday... Snow. The snow could be heavy at times. Patchy blowing snow after noon. High near 32. Breezy, with a southeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
100% chance of blowing snow Saturday Night Saturday Night... Snow before 9pm, then snow, possibly mixed with rain between 9pm and 1am, then snow likely after 1am. Patchy blowing snow before 7pm, then patchy blowing snow after 3am. Low around 23. Breezy, with a south southeast wind 10 to 15 mph becoming west 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
20% chance of blowing snow Sunday Sunday... A 20 percent chance of snow. Patchy blowing snow before 3pm. Mostly cloudy, with a high near 27. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 8. West northwest wind 5 to 10 mph becoming light northwest after midnight. Winds could gust as high as 15 mph.
50% chance of snow Monday Monday... A 50 percent chance of snow after noon. Cloudy, with a high near 23.
60% chance of snow Monday Night Monday Night... Snow likely, mainly before midnight. Mostly cloudy, with a low around 13. Chance of precipitation is 60%.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 21.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 13.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 29.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 3.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 16.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 4.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 28.
Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:01 AM
Sunset: 4:28 PM
Civil Sunrise:06:30 AM
Civil Sunset: 4:59 PM
Nautical Sunrise: 05:56 AM
Nautical Sunset: 5:33 PM
Astro Sunrise: 05:23 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.