Vernon Hills, IL Weather & Growing Conditions
This Afternoon
70°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 70. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms Likely | 5 mph E | 57% |
| Tonight | 62°F | Showers And Thunderstorms | 5 to 10 mph NE | 95% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 56% |
| Sunday Night | 56°F | Slight Chance Rain Showers | 15 mph NE | 15% |
| Monday | 64°F | Slight Chance Rain Showers | 15 mph ENE | 21% |
| Monday Night | 52°F | Mostly Cloudy | 10 to 15 mph ENE | 12% |
| Tuesday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 11% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 15 mph NE | 7% |
| Wednesday | 64°F | Partly Sunny | 5 to 10 mph NE | 13% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NE | 5% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 53°F | Mostly Cloudy | 0 to 5 mph NNE | 4% |
| Friday | 69°F | Partly Sunny | 0 to 10 mph NE | 5% |
| Friday Night | 54°F | Partly Cloudy | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Vernon Hills, IL
Last spring frost
Apr 29
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
6a
Explore more for Vernon Hills, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Mundelein 4 Wsw, Il (6.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.