Vermilion, IL Weather & Growing Conditions
Overnight
60°F
Chance Light Rain
A chance of rain. Cloudy, with a low around 60. South wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Chance Light Rain | 15 mph S | 50% |
| Wednesday | 66°F | Chance Light Rain then Slight Chance Drizzle | 10 to 15 mph SW | 39% |
| Wednesday Night | 44°F | Slight Chance Drizzle then Mostly Cloudy | 10 mph WSW | 10% |
| Thursday | 63°F | Partly Sunny | 9 to 15 mph WSW | 3% |
| Thursday Night | 43°F | Mostly Cloudy | 5 mph WNW | 2% |
| Friday | 55°F | Partly Sunny | 5 to 12 mph NNW | 7% |
| Friday Night | 34°F | Partly Cloudy | 5 to 9 mph NNW | 0% |
| Saturday | 54°F | Mostly Sunny | 6 mph NNW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 2 mph NW | 1% |
| Sunday | 59°F | Sunny | 2 to 8 mph WNW | 1% |
| Sunday Night | 32°F | Clear | 3 mph W | 0% |
| Monday | 62°F | Sunny | 1 to 7 mph SW | 0% |
| Monday Night | 36°F | Mostly Clear | 3 mph SW | 0% |
| Tuesday | 66°F | Sunny | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Vermilion, IL
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
179 days
Hardiness zone
6a
Explore more for Vermilion, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Paris Stp, Il (5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.