Harman US

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

WhenTempForecastWindPrecip
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.