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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: 12:46 am CST Dec 2, 2025 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
20% chance of snow on Overnight Mostly Cloudy on Tuesday 50% chance of snow on Wednesday Sunny on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Partly Sunny on Sunday Mostly Cloudy on Monday
Low: 13°F High: 22°F High: 33°F High: 10°F High: 25°F High: 29°F High: 24°F High: 25°F
Low: 25 °F Low: -2°F Low: -7°F Low: 17°F Low: 15°F Low: 5°F  
Snow Mostly Cloudy Snow Sunny Mostly Sunny Mostly Cloudy Partly Sunny Mostly Cloudy
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Current Conditions at
PERU - (KVYS)
21°
Cloudy
Light Snow
as of 12:35 AM CST
Rel. Humidity: 92%
Dew Point: 19°F
Visibility: 2 1/2 Miles
Pressure: 30.02 in.
Flight Rule: IFR
Wind Data
5 MPH
280° West
Cloud Level(s): Solid Overcast at 800ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
21°
Mostly Cloudy
as of 12:35 AM CST
Rel. Humidity: 85%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: MVFR
Wind Data
6 MPH
300° Northwest
Cloud Level(s): Broken at 1900ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
19°
Cloudy
Light Snow
as of 12:35 AM CST
Rel. Humidity: 100%
Dew Point: 19°F
Visibility: Less than 1/4 Miles
Pressure: 30.00 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 800ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
23°
Cloudy
as of 12:35 AM CST
Rel. Humidity: 92%
Dew Point: 21°F
Visibility: 7 Miles
Pressure: 30.01 in.
Flight Rule: IFR
Wind Data
8 MPH
270° West
Cloud Level(s): Broken at 900ft, Solid Overcast at 3800ft
20% chance of snow Overnight Overnight... A 20 percent chance of snow before 1am. Areas of freezing fog. Cloudy, with a low around 13. West northwest wind around 5 mph.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 22. West northwest wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a temperature rising to around 25 by 5am. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

50% chance of snow Wednesday Wednesday... A 50 percent chance of snow showers after noon. Cloudy, with a high near 33. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

20% chance of snow Wednesday Night Wednesday Night... A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around -2. North northwest wind around 10 mph, with gusts as high as 20 mph.

Sunny on Thursday Thursday... Sunny and cold, with a high near 10.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around -7.

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

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 17.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 29.

20% chance of snow Saturday Night Saturday Night... A chance of snow. Mostly cloudy, with a low around 15.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 24.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 5.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 25.

Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:04 AM
Sunset: 4:27 PM
Civil Sunrise:06:33 AM
Civil Sunset: 4:58 PM
Nautical Sunrise: 05:59 AM
Nautical Sunset: 5:33 PM
Astro Sunrise: 05:26 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.