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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: 2:21 am CST Jan 10, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
80% chance of rain on Overnight 90% chance of rain & snow on Saturday 20% chance of snow on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday 20% chance of snow on Wednesday Partly Sunny on Thursday 20% chance of snow on Friday
Low: 39°F High: 38°F High: 32°F High: 44°F High: 50°F High: 35°F High: 31°F High: 36°F
Low: 22°F Low: 25°F Low: 34°F Low: 32°F Low: 19°F Low: 26°F  
Rain Rain & Snow Snow Mostly Sunny Partly Sunny Snow Partly Sunny Snow
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Current Conditions at
PERU - (KVYS)
39°
Cloudy
as of 1:59 AM CST
Rel. Humidity: 93%
Dew Point: 37°F
Visibility: 7 Miles
Pressure: 30.11 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Scattered at 900ft, Solid Overcast at 2600ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
37°
Cloudy
as of 1:55 AM CST
Rel. Humidity: 93%
Dew Point: 36°F
Visibility: 7 Miles
Pressure: 30.10 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 2600ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
41°
Cloudy
as of 1:55 AM CST
Rel. Humidity: 80%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: MVFR
Wind Data
5 MPH
130° Southeast
Cloud Level(s): Solid Overcast at 2300ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
39°
Cloudy
as of 1:55 AM CST
Rel. Humidity: 93%
Dew Point: 37°F
Pressure: 30.11 in.
Wind Data
6 MPH
100° East
Cloud Level(s): Solid Overcast at 2300ft
80% chance of rain Overnight Overnight... Rain, mainly after 3am. Steady temperature around 39. South southeast wind around 5 mph becoming southwest. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
90% chance of rain & snow Saturday Saturday... Rain and snow before noon, then scattered snow after 3pm. High near 38. West northwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
50% chance of snow Saturday Night Saturday Night... Scattered snow showers before 11pm, then scattered flurries with isolated snow showers between 11pm and midnight, then a chance of flurries after midnight. Mostly cloudy, with a low around 22. Blustery, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
20% chance of snow Sunday Sunday... A chance of flurries before 9am. Mostly sunny, with a high near 32. Breezy, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 25. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 44.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 34.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 50.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 32.
20% chance of snow Wednesday Wednesday... A chance of snow showers. Mostly cloudy, with a high near 35.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 19.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 31.
20% chance of snow Thursday Night Thursday Night... A chance of snow. Mostly cloudy, with a low around 26.
20% chance of snow Friday Friday... A chance of snow showers. Mostly cloudy, with a high near 36.
Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:21 AM
Sunset: 4:46 PM
Civil Sunrise:06:51 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:16 AM
Nautical Sunset: 5:51 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 6:25 PM
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