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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: 12:11 am CST Dec 9, 2025 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Flurries on Overnight 30% chance of rain on Tuesday 50% chance of snow on Wednesday 40% chance of snow on Thursday 20% chance of snow on Friday Mostly Cloudy on Saturday Mostly Sunny on Sunday Mostly Cloudy on Monday
Low: 17°F High: 35°F High: 34°F High: 24°F High: 22°F High: 9°F High: 14°F High: 25°F
Low: 32°F Low: 16°F Low: 12°F Low: 1°F Low: -1°F Low: 4°F  
Flurries Rain Snow Snow Snow Mostly Cloudy Mostly Sunny Mostly Cloudy
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Current Conditions at
PERU - (KVYS)
23°
Feels like 11°F
Cloudy
as of 12:55 AM CST
Rel. Humidity: 79%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
13 MPH
160° South
Cloud Level(s): Scattered at 4400ft, Broken at 5000ft, Solid Overcast at 6500ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
21°
Cloudy
as of 12:55 AM CST
Rel. Humidity: 85%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
8 MPH
170° South
Cloud Level(s): Scattered at 4200ft, Broken at 6500ft, Solid Overcast at 8000ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
23°
Feels like 11°F
Cloudy
as of 12:55 AM CST
Rel. Humidity: 73%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
12 MPH
160° South
Cloud Level(s): Solid Overcast at 8500ft
Flurries on Overnight Overnight... Scattered flurries before 3am. Mostly cloudy, with a low around 17. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.

30% chance of rain Tuesday Tuesday... A 30 percent chance of rain after 5pm. Mostly cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

90% chance of rain Tuesday Night Tuesday Night... Rain, mainly before 11pm. Low around 32. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

50% chance of snow Wednesday Wednesday... A 50 percent chance of snow. Mostly cloudy, with a high near 34. Breezy, with a northwest wind 20 to 25 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 40 mph.

20% chance of snow Wednesday Night Wednesday Night... A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

40% chance of snow Thursday Thursday... A 40 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 24.

40% chance of snow Thursday Night Thursday Night... A 40 percent chance of snow. Mostly cloudy, with a low around 12.

20% chance of snow Friday Friday... A chance of snow. Mostly cloudy, with a high near 22.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 1.

Mostly Cloudy on Saturday Saturday... Mostly cloudy and cold, with a high near 9.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around -1.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 14.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 4.

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

Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:11 AM
Sunset: 4:27 PM
Civil Sunrise:06:39 AM
Civil Sunset: 4:58 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 5:33 PM
Astro Sunrise: 05:31 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.