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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: 8:25 pm CST Jan 21, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of snow on Tonight 20% chance of snow on Thursday Mostly Sunny on Friday 30% chance of snow on Saturday 20% chance of snow on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday
Low: 16°F High: 28°F High: 0 °F High: 9°F High: 16°F High: 12°F High: 22°F High: 20°F
Low: -6°F Low: -6°F Low: 5°F Low: -1°F Low: 3°F Low: 9°F  
Snow Snow Mostly Sunny Snow Snow Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
PERU - (KVYS)
30°
Feels like 15°F
Mostly Cloudy
as of 9:00 PM CST
Rel. Humidity: 63%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: MVFR
Wind Data
29 MPH
Gust: 40 MPH
290° West
Cloud Level(s): Broken at 2400ft, Broken at 2900ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
30°
Feels like 16°F
Clear
as of 8:55 PM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
25 MPH
Gust: 33 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
32°
Feels like 22°F
Cloudy
as of 8:55 PM CST
Rel. Humidity: 68%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
14 MPH
240° Southwest
Cloud Level(s): Scattered at 1800ft, Scattered at 2900ft, Solid Overcast at 5000ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
32°
Feels like 20°F
Partly Cloudy
as of 8:55 PM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 23 MPH
240° Southwest
Cloud Level(s): Scattered at 6500ft, Scattered at 9000ft
20% chance of snow Tonight Tonight... A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming clear, with a low around 16. Blustery, with a west northwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 45 mph.
20% chance of snow Thursday Thursday... A 20 percent chance of snow showers after 3pm. Mostly sunny, with a high near 28. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around -6. Wind chill values as low as -27. Northwest wind around 15 mph, with gusts as high as 30 mph.
Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 0. Wind chill values as low as -29. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around -6. North wind 5 to 10 mph, with gusts as high as 15 mph.
30% chance of snow Saturday Saturday... A 30 percent chance of snow after noon. Mostly cloudy and cold, with a high near 9.
50% chance of snow Saturday Night Saturday Night... A 50 percent chance of snow. Cloudy, with a low around 5.
20% chance of snow Sunday Sunday... A chance of snow. Mostly cloudy, with a high near 16.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around -1.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 12.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 3.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 22.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 9.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 20.
Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:16 AM
Sunset: 4:59 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:29 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 6:03 PM
Astro Sunrise: 05:40 AM
Astro Sunset: 6:35 PM
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