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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: 8:31 pm CST Jan 10, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
30% chance of snow on Tonight Flurries on Sunday Mostly Sunny on Monday 20% chance of rain on Tuesday Mostly Cloudy on Wednesday Mostly Sunny on Thursday 20% chance of snow on Friday Mostly Cloudy on Saturday
Low: 23°F High: 32°F High: 43°F High: 50°F High: 35°F High: 32°F High: 36°F High: 26°F
Low: 26°F Low: 33°F Low: 31°F Low: 18°F Low: 26°F Low: 20°F  
Snow Flurries Mostly Sunny Rain Mostly Cloudy Mostly Sunny Snow Mostly Cloudy
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Current Conditions at
PERU - (KVYS)
30°
Feels like 18°F
Cloudy
as of 9:00 PM CST
Rel. Humidity: 74%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: MVFR
Wind Data
16 MPH
Gust: 25 MPH
270° West
Cloud Level(s): Solid Overcast at 2900ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
28°
Mostly Cloudy
as of 8:55 PM CST
Rel. Humidity: 79%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
7 MPH
270° West
Cloud Level(s): Scattered at 3000ft, Broken at 3700ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
30°
Feels like 18°F
Partly Cloudy
as of 8:55 PM CST
Rel. Humidity: 74%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
16 MPH
290° West
Cloud Level(s): Scattered at 2200ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
28°
Feels like 15°F
Clear
as of 8:55 PM CST
Rel. Humidity: 79%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 24 MPH
290° West
Cloud Level(s): Clear
30% chance of snow Tonight Tonight... A 30 percent chance of snow showers, mainly before 4am. Cloudy, with a low around 23. Blustery, with a west northwest wind 20 to 25 mph, with gusts as high as 35 mph.

Flurries on Sunday Sunday... Scattered flurries before 9am. Partly sunny, with a high near 32. Breezy, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 26. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 43. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 33. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

20% chance of rain Tuesday Tuesday... A 20 percent chance of rain. Partly sunny, with a high near 50.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 31.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 35.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 18.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 32.

20% chance of snow Thursday Night Thursday Night... A chance of snow. Mostly cloudy, with a low around 26.

20% chance of snow Friday Friday... A chance of snow. Mostly cloudy, with a high near 36.

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

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 26.

Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:21 AM
Sunset: 4:46 PM
Civil Sunrise:06:51 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:51 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:25 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.