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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: 10:01 pm CST Dec 25, 2025 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday New Year's Day
80% chance of rain on Tonight 30% chance of rain on Friday Morning Fog on Saturday 70% chance of rain on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday Mostly Sunny on New Year's Day
Low: 49 °F High: 53°F High: 54°F High: 53°F High: 23°F High: 29°F High: 32°F High: 27°F
Low: 38°F Low: 49°F Low: 16°F Low: 13°F Low: 20°F Low: 16°F  
Rain Rain Morning Fog Rain Mostly Sunny Mostly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
45°
Feels like 36°F
Cloudy
as of 10:55 PM CST
Rel. Humidity: 81%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: MVFR
Wind Data
21 MPH
120° Southeast
Cloud Level(s): Solid Overcast at 1400ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
46°
Feels like 41°F
Cloudy
Mist
as of 10:55 PM CST
Rel. Humidity: 87%
Dew Point: 43°F
Visibility: 2 1/2 Miles
Pressure: 29.85 in.
Flight Rule: LIFR
Wind Data
10 MPH
Gust: 16 MPH
140° Southeast
Cloud Level(s): Solid Overcast at 400ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
43°
Feels like 36°F
Cloudy
as of 10:55 PM CST
Rel. Humidity: 81%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: MVFR
Wind Data
13 MPH
130° Southeast
Cloud Level(s): Solid Overcast at 1500ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
45°
Feels like 36°F
Cloudy
as of 10:55 PM CST
Rel. Humidity: 81%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: MVFR
Wind Data
18 MPH
120° Southeast
Cloud Level(s): Solid Overcast at 1200ft
80% chance of rain Tonight Tonight... Areas of drizzle with scattered showers before 3am, then periods of showers or drizzle between 3am and 5am, then areas of drizzle with scattered showers after 5am. Patchy fog. Temperature rising to around 49 by 4am. East southeast wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
30% chance of rain Friday Friday... Areas of drizzle with scattered showers before 8am, then patchy drizzle with isolated sprinkles between 8am and 11am. Areas of fog before noon. Otherwise, mostly cloudy, with a high near 53. South wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Patchy Fog on Friday Night Friday Night... Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 38. Northwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Morning Fog on Saturday Saturday... Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 54. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
30% chance of rain Saturday Night Saturday Night... A 30 percent chance of rain after midnight. Cloudy, with a low around 49. Southeast wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 15 mph.
70% chance of rain Sunday Sunday... Rain likely, mainly after noon. Cloudy, with a high near 53. Chance of precipitation is 70%.
40% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow before midnight. Mostly cloudy, with a low around 16. Windy. Chance of precipitation is 40%.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 23. Windy.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 13. Blustery.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 29.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 20.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 32.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 16.
Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 27.
Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:21 AM
Sunset: 4:33 PM
Civil Sunrise:06:50 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 5:39 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:13 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.