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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: 5:36 pm CST Jan 1, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Cloudy on Tonight Mostly Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday Mostly Sunny on Wednesday 20% chance of rain on Thursday
Low: 16°F High: 27°F High: 30°F High: 32°F High: 46°F High: 50°F High: 46°F High: 49°F
Low: 20°F Low: 17°F Low: 29°F Low: 35°F Low: 30°F Low: 33°F  
Cloudy Mostly Sunny Partly Sunny Mostly Sunny Mostly Sunny Partly Sunny Mostly Sunny Rain
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Current Conditions at
PERU - (KVYS)
23°
Clear
as of 5:55 PM CST
Rel. Humidity: 62%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
19°
Clear
as of 5:55 PM CST
Rel. Humidity: 67%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
19°
Clear
as of 5:55 PM CST
Rel. Humidity: 73%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
23°
Clear
as of 5:55 PM CST
Rel. Humidity: 67%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 16. Calm wind becoming northwest around 5 mph.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 27. North northwest wind around 5 mph.
Cloudy on Friday Night Friday Night... Cloudy, with a low around 20. North northeast wind around 5 mph becoming calm.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 30. Calm wind becoming west northwest around 5 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 17. West northwest wind around 5 mph becoming calm.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 32.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 29.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 46.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 35.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 50.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 30.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 46.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 33.
20% chance of rain Thursday Thursday... A chance of rain. Mostly cloudy, with a high near 49.
Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:22 AM
Sunset: 4:38 PM
Civil Sunrise:06:51 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:43 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:17 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.