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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: 4:01 pm CST Jan 18, 2026 Latitude: 41.2950348 Longitude: -89.0361928 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight M.L.King Day Tuesday Wednesday Thursday Friday Saturday Sunday
70% chance of snow on This Afternoon 80% chance of snow on Tonight Mostly Sunny on M.L.King Day Mostly Sunny on Tuesday Partly Sunny on Wednesday Mostly Sunny on Thursday Partly Sunny on Friday Mostly Cloudy on Saturday Partly Sunny on Sunday
High: 21°F Low: 0 °F High: 10°F High: 24°F High: 31°F High: 21°F High: 21°F High: 11°F High: 10°F
Low: 6 °F Low: 18°F Low: 13°F Low: 10°F Low: 3°F Low: -3°F  
Snow Snow Mostly Sunny Mostly Sunny Partly Sunny Mostly Sunny Partly Sunny Mostly Cloudy Partly Sunny
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Current Conditions at
PERU - (KVYS)
19°
Feels like 7°F
Cloudy
as of 4:59 PM CST
Rel. Humidity: 57%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
12 MPH
210° Southwest
Cloud Level(s): Broken at 5500ft, Solid Overcast at 7000ft
Current Conditions at
LACON/MARSHALL COUNTY - (KC75)
19°
Cloudy
as of 4:55 PM CST
Rel. Humidity: 48%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
8 MPH
240° Southwest
Cloud Level(s): Broken at 5500ft, Broken at 7000ft, Solid Overcast at 10000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
18°
Feels like 5°F
Cloudy
Light Snow
as of 4:55 PM CST
Rel. Humidity: 72%
Dew Point: 10°F
Visibility: 1 3/4 Miles
Pressure: 29.93 in.
Flight Rule: IFR
Wind Data
10 MPH
Gust: 17 MPH
250° West
Cloud Level(s): Scattered at 1500ft, Solid Overcast at 2100ft
Current Conditions at
PONTIAC MUNICIPAL AIRPT - (KPNT)
19°
Feels like 6°F
Cloudy
Light Snow
as of 4:55 PM CST
Rel. Humidity: 57%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
14 MPH
230° Southwest
Cloud Level(s): Scattered at 3000ft, Broken at 3700ft, Solid Overcast at 5000ft
70% chance of snow This Afternoon This Afternoon... Snow likely. Cloudy, with a high near 21. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
80% chance of snow Tonight Tonight... Snow, mainly before 9pm, then isolated snow showers after midnight. Low around 0. Wind chill values as low as -21. Blustery, with a southwest wind 10 to 15 mph becoming west northwest 20 to 25 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Mostly Sunny on M.L.King Day M.L.King Day... Mostly sunny and cold, with a high near 10. Wind chill values as low as -23. Blustery, with a west northwest wind 20 to 25 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 6. Wind chill values as low as -8. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 24. West wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
40% chance of snow Tuesday Night Tuesday Night... A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 18.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 31.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 13.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 21.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 10.
Partly Sunny on Friday Friday... Partly sunny, with a high near 21.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 3.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 11.
20% chance of snow Saturday Night Saturday Night... A chance of snow. Mostly cloudy, with a low around -3.
Partly Sunny on Sunday Sunday... Partly sunny and cold, with a high near 10.
Current Radar Image


Sun Almanac for Deer Park, Illinois
Sunrise: 07:18 AM
Sunset: 4:55 PM
Civil Sunrise:06:48 AM
Civil Sunset: 5:25 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 5:59 PM
Astro Sunrise: 05:41 AM
Astro Sunset: 6:32 PM
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