Grandwood Park, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grandwood Park, a community in Lake County, Illinois.
This Afternoon
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 68. East southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Grandwood Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms Likely | 5 to 10 mph ESE | 65% |
| Tonight | 60°F | Showers And Thunderstorms | 5 to 10 mph ENE | 94% |
| Sunday | 68°F | Chance Showers And Thunderstorms | 15 to 20 mph NNE | 50% |
| Sunday Night | 55°F | Mostly Cloudy | 15 mph NE | 12% |
| Monday | 63°F | Slight Chance Rain Showers | 15 mph ENE | 21% |
| Monday Night | 51°F | Mostly Cloudy | 10 to 15 mph ENE | 11% |
| Tuesday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 11% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 15 mph NE | 7% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 12% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NE | 5% |
| Thursday | 65°F | Partly Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 52°F | Mostly Cloudy | 0 to 5 mph NNE | 4% |
| Friday | 69°F | Partly Sunny | 0 to 10 mph NE | 4% |
| Friday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 3% |
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 Sep 19, 2026.