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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: 7:01 am CST Jan 2, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Cloudy on Today Mostly Cloudy on Tonight Partly Sunny on Saturday Partly Sunny on Sunday Partly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday 20% chance of rain on Thursday
High: 28°F Low: 21°F High: 31°F High: 32°F High: 45°F High: 48°F High: 47°F High: 51°F
Low: 17°F Low: 28°F Low: 33°F Low: 30°F Low: 35°F  
Mostly Cloudy Mostly Cloudy Partly Sunny Partly Sunny Partly Sunny Mostly Sunny Partly Sunny Rain
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Current Conditions at
PERU - (KVYS)
25°
Cloudy
as of 7:15 AM CST
Rel. Humidity: 68%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: MVFR
Wind Data
6 MPH
340° North
Cloud Level(s): Solid Overcast at 2200ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
23°
Cloudy
as of 7:15 AM CST
Rel. Humidity: 73%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: MVFR
Wind Data
3 MPH
350° North
Cloud Level(s): Solid Overcast at 2200ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
23°
Cloudy
as of 7:15 AM CST
Rel. Humidity: 79%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: MVFR
Wind Data
5 MPH
340° North
Cloud Level(s): Solid Overcast at 2500ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
23°
Cloudy
as of 7:15 AM CST
Rel. Humidity: 73%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: MVFR
Wind Data
8 MPH
340° North
Cloud Level(s): Solid Overcast at 2000ft
Mostly Cloudy on Today Today... Mostly cloudy through mid morning, then becoming sunny, with a high near 28. North northwest wind around 5 mph.

Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 21. North northeast wind around 5 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 31. 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.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 32. Calm wind becoming south southeast around 5 mph in the afternoon. Winds could gust as high as 15 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 28.

Partly Sunny on Monday Monday... Partly sunny, with a high near 45.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 33.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 48.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 30.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 47.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 35.

20% chance of rain Thursday Thursday... A chance of rain. Mostly cloudy, with a high near 51.

Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:22 AM
Sunset: 4:39 PM
Civil Sunrise:06:51 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:44 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:18 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.