Vernon, IL Weather & Growing Conditions
Today
86°F
Sunny
Sunny, with a high near 86. Southwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 2 mph SW | 0% |
| Tonight | 64°F | Mostly Clear | 2 mph SE | 0% |
| Wednesday | 88°F | Sunny | 2 mph S | 3% |
| Wednesday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 mph S | 43% |
| Thursday | 85°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SW | 60% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms | 2 mph SE | 51% |
| Friday | 85°F | Chance Showers And Thunderstorms | 3 mph SW | 45% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph S | 27% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 3 mph SW | 27% |
| Saturday Night | 71°F | Mostly Clear | 3 mph S | 13% |
| Sunday | 89°F | Sunny | 3 to 9 mph S | 8% |
| Sunday Night | 73°F | Mostly Clear | 7 mph S | 5% |
| Monday | 90°F | Mostly Sunny | 5 to 8 mph SW | 6% |
| Monday Night | 74°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Vernon, IL
Last spring frost
Apr 10
First fall frost
Oct 24
Growing season
196 days
Hardiness zone
6b
Explore more for Vernon, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Vandalia, Il (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.