Vermilion, IL Weather & Growing Conditions
Tonight
58°F
Rain
Rain between 9pm and 1am, then rain showers. Mostly cloudy, with a low around 58. South wind 15 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Rain | 15 to 18 mph S | 87% |
| Wednesday | 66°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph SSW | 40% |
| Wednesday Night | 44°F | Mostly Cloudy | 8 mph SW | 0% |
| Thursday | 64°F | Sunny | 7 to 14 mph WSW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 5 mph WNW | 4% |
| Friday | 57°F | Mostly Cloudy | 3 to 10 mph NNW | 11% |
| Friday Night | 36°F | Mostly Cloudy | 3 to 8 mph NNW | 5% |
| Saturday | 55°F | Mostly Sunny | 5 mph NNW | 1% |
| Saturday Night | 32°F | Partly Cloudy | 2 mph WNW | 1% |
| Sunday | 61°F | Sunny | 2 to 8 mph W | 9% |
| Sunday Night | 32°F | Mostly Clear | 5 mph NW | 9% |
| Monday | 62°F | Sunny | 2 to 10 mph W | 5% |
| Monday Night | 37°F | Mostly Clear | 6 mph SW | 1% |
| Tuesday | 66°F | Sunny | 7 mph W | 2% |
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.