Vernon, IL Weather & Growing Conditions
Tonight
56°F
Rain
Rain. Mostly cloudy, with a low around 56. South wind 9 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Rain | 9 to 15 mph S | 96% |
| Wednesday | 63°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 13 mph SW | 19% |
| Wednesday Night | 43°F | Partly Cloudy | 5 mph W | 0% |
| Thursday | 64°F | Sunny | 5 to 12 mph W | 0% |
| Thursday Night | 42°F | Mostly Cloudy | 3 mph NW | 3% |
| Friday | 58°F | Mostly Cloudy | 3 to 10 mph NW | 7% |
| Friday Night | 36°F | Partly Cloudy | 1 to 6 mph N | 1% |
| Saturday | 56°F | Mostly Sunny | 3 mph NW | 0% |
| Saturday Night | 33°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 61°F | Sunny | 1 to 7 mph W | 6% |
| Sunday Night | 33°F | Mostly Clear | 3 mph NW | 5% |
| Monday | 64°F | Sunny | 1 to 8 mph W | 2% |
| Monday Night | 38°F | Mostly Clear | 3 mph SW | 1% |
| Tuesday | 68°F | Sunny | 2 to 6 mph W | 1% |
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 Nov 4, 2026.