Vernon, IL Weather & Growing Conditions
This Afternoon
95°F
Mostly Sunny
Mostly sunny, with a high near 95. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 95°F | Mostly Sunny | 6 mph SW | 5% |
| Tonight | 72°F | Partly Cloudy | 0 to 3 mph S | 3% |
| Sunday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 20% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 8 mph N | 69% |
| Monday | 80°F | Showers And Thunderstorms Likely | 6 to 9 mph NE | 69% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 49% |
| Tuesday | 71°F | Slight Chance Rain Showers | 6 to 10 mph NE | 22% |
| Tuesday Night | 54°F | Mostly Cloudy | 3 to 10 mph N | 9% |
| Wednesday | 73°F | Mostly Sunny | 5 to 9 mph N | 4% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 8 mph N | 2% |
| Thursday | 75°F | Mostly Sunny | 3 to 8 mph N | 2% |
| Thursday Night | 56°F | Partly Cloudy | 1 to 7 mph NE | 3% |
| Friday | 77°F | Mostly Sunny | 2 to 8 mph NE | 3% |
| Friday Night | 55°F | Partly Cloudy | 2 to 7 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 (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.