Vernon, IL Weather & Growing Conditions
Tonight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Partly Cloudy | 5 mph S | 2% |
| Sunday | 92°F | Mostly Sunny | 3 to 7 mph W | 11% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 3 to 7 mph NE | 67% |
| Monday | 78°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 42% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 42% |
| Tuesday | 72°F | Slight Chance Rain Showers | 7 to 12 mph NE | 21% |
| Tuesday Night | 54°F | Mostly Cloudy | 3 to 12 mph N | 3% |
| Wednesday | 73°F | Mostly Sunny | 5 to 9 mph N | 1% |
| Wednesday Night | 54°F | Partly Cloudy | 1 to 8 mph N | 0% |
| Thursday | 75°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 1 to 6 mph N | 15% |
| Friday | 78°F | Slight Chance Rain Showers | 2 to 6 mph NE | 15% |
| Friday Night | 55°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph NE | 15% |
| Saturday | 80°F | Mostly Sunny | 5 mph NE | 2% |
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 (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.