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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: 8:01 pm CST Jan 22, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Flurries on Tonight Mostly Sunny on Friday 50% chance of snow on Saturday 50% chance of snow on Sunday Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thursday
Low: -9°F High: 1 °F High: 9 °F High: 15°F High: 13°F High: 21°F High: 17°F High: 11°F
Low: -6°F Low: 6 °F Low: -2°F Low: 4°F Low: 7°F Low: 1°F  
Flurries Mostly Sunny Snow Snow Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
Feels like -8°F
Clear
as of 11:19 PM CST
Rel. Humidity: 46%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.39 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 21 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
Feels like -8°F
Clear
as of 11:15 PM CST
Rel. Humidity: 55%
Dew Point: -4°F
Visibility: 10 Miles
Pressure: 30.41 in.
Flight Rule: VFR
Wind Data
16 MPH
Gust: 23 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
10°
Feels like -9°F
Clear
as of 11:15 PM CST
Rel. Humidity: 39%
Dew Point: -9°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
23 MPH
Gust: 29 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
12°
Feels like -6°F
Clear
as of 11:15 PM CST
Rel. Humidity: 61%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.37 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 25 MPH
320° Northwest
Cloud Level(s): Clear
Flurries on Tonight Tonight... Scattered flurries after midnight. Partly cloudy, with a low around -9. Wind chill values as low as -28. Blustery, with a northwest wind around 20 mph, with gusts as high as 30 mph.

Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 1. Wind chill values as low as -31. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Increasing Clouds on Friday Night Friday Night... Increasing clouds, with a low around -6. Wind chill values as low as -19. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

50% chance of snow Saturday Saturday... A 50 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 9. Wind chill values as low as -19. East northeast wind around 5 mph, with gusts as high as 15 mph.

60% chance of snow Saturday Night Saturday Night... Snow likely. Cloudy, with a low around 6. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.

50% chance of snow Sunday Sunday... A 50 percent chance of snow. Mostly cloudy, with a high near 15.

30% chance of snow Sunday Night Sunday Night... A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2.

Sunny on Monday Monday... Sunny, with a high near 13.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 4.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 21.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 7.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 17.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 1.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 11.

Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:15 AM
Sunset: 5:01 PM
Civil Sunrise:06:45 AM
Civil Sunset: 5:31 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 6:05 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:37 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.