Vernon Hills, IL Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Southwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 10 mph SW | 0% |
| Tonight | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 5 mph WSW | 74% |
| Wednesday Night | 63°F | Showers And Thunderstorms | 0 to 5 mph NW | 83% |
| Thursday | 78°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 56% |
| Thursday Night | 61°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSW | 15% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 3% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph SSE | 8% |
| Saturday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 15% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 21% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 21% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 46% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 mph SSW | 46% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 5 mph W | 48% |
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 Aug 4, 2026.