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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: 6:36 am CST Nov 21, 2025 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thanksgiving Day
30% chance of rain on Today 20% chance of rain on Tonight Sunny on Saturday Sunny on Sunday 50% chance of rain on Monday 20% chance of rain on Tuesday Mostly Sunny on Wednesday Mostly Sunny on Thanksgiving Day
High: 50°F Low: 30°F High: 52°F High: 57°F High: 56°F High: 57°F High: 41°F High: 36°F
Low: 34°F Low: 39°F Low: 47°F Low: 33°F Low: 23°F  
Rain Rain Sunny Sunny Rain Rain Mostly Sunny Mostly Sunny
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Current Conditions at
PERU - (KVYS)
43°
Clear
Mist
as of 7:35 AM CST
Rel. Humidity: 93%
Dew Point: 41°F
Visibility: 2 1/2 Miles
Pressure: 30.07 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
45°
Cloudy
Mist
as of 7:35 AM CST
Rel. Humidity: 93%
Dew Point: 43°F
Visibility: 5 Miles
Pressure: 30.06 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 900ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
43°
Clear
Mist
as of 7:35 AM CST
Rel. Humidity: 100%
Dew Point: 43°F
Visibility: 4 Miles
Pressure: 30.06 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
46°
Cloudy
Mist
as of 7:35 AM CST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 1 3/4 Miles
Pressure: 30.06 in.
Flight Rule: LIFR
Wind Data
3 MPH
070° East
Cloud Level(s): Broken at 300ft, Solid Overcast at 1300ft
30% chance of rain Today Today... A 30 percent chance of rain, mainly after 5pm. Cloudy, with a high near 50. North northeast wind around 5 mph.
20% chance of rain Tonight Tonight... A 20 percent chance of rain before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 30. North northeast wind around 5 mph.
Sunny on Saturday Saturday... Sunny, with a high near 52. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 15 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 34. West southwest wind around 5 mph, with gusts as high as 15 mph.
Sunny on Sunday Sunday... Sunny, with a high near 57. West wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 39.
50% chance of rain Monday Monday... A 50 percent chance of rain after noon. Mostly cloudy, with a high near 56.
Rain on Monday Night Monday Night... Rain. Cloudy, with a low around 47.
20% chance of rain Tuesday Tuesday... A chance of rain. Mostly cloudy, with a high near 57.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 33.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 41.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 23.
Mostly Sunny on Thanksgiving Day Thanksgiving Day... Mostly sunny, with a high near 36.
Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 06:52 AM
Sunset: 4:32 PM
Civil Sunrise:06:22 AM
Civil Sunset: 5:02 PM
Nautical Sunrise: 05:48 AM
Nautical Sunset: 5:36 PM
Astro Sunrise: 05:15 AM
Astro Sunset: 6:09 PM
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