Harman US

Deer Park, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Deer Park, a village in Lake County, Illinois.

This Afternoon
70°F
Chance Rain
A chance of rain and a slight chance of thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 67 in the afternoon. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Deer Park

WhenTempForecastWindPrecip
This Afternoon 70°F Chance Rain 15 to 20 mph S 54%
Tonight 60°F Rain 15 mph S 82%
Wednesday 63°F Rain Likely 15 mph SSW 61%
Wednesday Night 48°F Slight Chance Rain 15 mph SW 19%
Thursday 56°F Chance Rain 10 to 15 mph WSW 35%
Thursday Night 42°F Chance Rain 5 to 10 mph NW 49%
Friday 52°F Chance Rain 10 to 15 mph N 27%
Friday Night 36°F Mostly Cloudy 5 mph NNW 7%
Saturday 52°F Mostly Sunny 5 mph WNW 7%
Saturday Night 35°F Partly Cloudy 0 to 5 mph WSW 7%
Sunday 57°F Mostly Sunny then Slight Chance Rain 5 to 10 mph W 17%
Sunday Night 36°F Mostly Clear 5 mph WNW 8%
Monday 60°F Sunny 5 to 10 mph WSW 3%
Monday Night 40°F Mostly Clear 5 to 10 mph W 2%

Forecast source: National Weather Service (api.weather.gov) for Deer Park (42.166, -88.086). Updated through the day.

Growing snapshot for Deer Park

Last spring frost
Apr 29
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
5b

More local growing data for Deer Park: nearby ZIP 60047 weather · frost dates · planting calendar · Illinois frost dates

Nearby towns & communities

All Illinois locations ›

Climate data from the nearest NOAA station, Mundelein 4 Wsw, Il (4 mi from Deer Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.