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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: 9:17 am CST Jan 23, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

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Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Sunny on Today Mostly Cloudy on Tonight 40% 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
High: 0 °F Low: -5°F High: 8 °F High: 14°F High: 13°F High: 21°F High: 15°F High: 13°F
Low: 6 °F Low: -2°F Low: 5°F Low: 4°F Low: -1°F  
Sunny Mostly Cloudy Snow Snow Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
-4°
Feels like -22°F
Clear
as of 11:41 AM CST
Rel. Humidity: 33%
Dew Point: -26°F
Visibility: 10 Miles
Pressure: 30.76 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 21 MPH
330° Northwest
Cloud Level(s): Clear
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
-4°
Feels like -21°F
Clear
as of 11:35 AM CST
Rel. Humidity: 30%
Dew Point: -27°F
Visibility: 10 Miles
Pressure: 30.79 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 20 MPH
350° North
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
-4°
Feels like -20°F
Clear
as of 11:35 AM CST
Rel. Humidity: 36%
Dew Point: -24°F
Visibility: 10 Miles
Pressure: 30.74 in.
Flight Rule: VFR
Wind Data
9 MPH
Gust: 17 MPH
330° Northwest
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
-2°
Feels like -21°F
Clear
as of 11:35 AM CST
Rel. Humidity: 33%
Dew Point: -24°F
Visibility: 10 Miles
Pressure: 30.75 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 22 MPH
330° Northwest
Cloud Level(s): Clear
Sunny on Today Today... Sunny and cold, with a high near 0. Wind chill values as low as -27. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around -5. Wind chill values as low as -21. North northeast wind 5 to 10 mph.

40% chance of snow Saturday Saturday... A 40 percent chance of snow after noon. Mostly cloudy and cold, with a high near 8. Wind chill values as low as -17. East northeast wind around 5 mph, with gusts as high as 10 mph.

70% chance of snow Saturday Night Saturday Night... Snow likely, mainly after midnight. Cloudy, with a low around 6. Wind chill values as low as -5. Northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

50% chance of snow Sunday Sunday... A 50 percent chance of snow. Cloudy, with a high near 14. North wind around 10 mph, with gusts as high as 20 mph.

20% chance of snow Sunday Night Sunday Night... A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -2.

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

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 5.

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

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

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 15.

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

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 13.

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.