Grandwood Park, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grandwood Park, a community in Lake County, Illinois.
Today
64°F
Scattered Rain Showers then Patchy Drizzle
Scattered rain showers before 10am, then patchy drizzle and isolated rain showers. Mostly cloudy. High near 64, with temperatures falling to around 55 in the afternoon. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Grandwood Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Scattered Rain Showers then Patchy Drizzle | 15 mph SW | 25% |
| Tonight | 47°F | Patchy Drizzle then Mostly Cloudy | 15 mph SW | 14% |
| Thursday | 56°F | Chance Rain Showers | 10 to 15 mph WSW | 35% |
| Thursday Night | 39°F | Rain Showers Likely | 10 to 15 mph NNW | 56% |
| Friday | 49°F | Mostly Cloudy | 15 mph NNW | 13% |
| Friday Night | 34°F | Partly Cloudy | 5 to 10 mph NNW | 2% |
| Saturday | 51°F | Mostly Sunny | 5 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 5% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph W | 1% |
| Monday | 60°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 mph WSW | 1% |
| Tuesday | 60°F | Sunny | 5 mph WNW | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Grandwood Park (42.392, -87.989). Updated through the day.
Growing snapshot for Grandwood Park
Last spring frost
Apr 30
First fall frost
Oct 19
Growing season
170 days
Hardiness zone
6a
More local growing data for Grandwood Park: nearby ZIP 60031 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Waukegan, Il (3.3 mi from Grandwood Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.