Vergennes, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vergennes, a village in Jackson County, Illinois.
Tonight
55°F
Showers And Thunderstorms
Showers and thunderstorms before 2am. Mostly cloudy. Low around 55, with temperatures rising to around 58 overnight. South wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.
7-day forecast for Vergennes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Showers And Thunderstorms | 7 to 16 mph S | 96% |
| Wednesday | 68°F | Partly Sunny | 6 to 12 mph WSW | 7% |
| Wednesday Night | 42°F | Partly Cloudy | 3 mph SW | 0% |
| Thursday | 69°F | Sunny | 3 to 8 mph WSW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 3 mph WNW | 6% |
| Friday | 61°F | Partly Sunny | 3 to 12 mph NNW | 2% |
| Friday Night | 38°F | Partly Cloudy | 2 to 6 mph NNW | 0% |
| Saturday | 58°F | Partly Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 63°F | Sunny | 1 to 7 mph W | 5% |
| Sunday Night | 34°F | Mostly Clear | 3 mph WNW | 4% |
| Monday | 66°F | Sunny | 1 to 8 mph WSW | 2% |
| Monday Night | 37°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 70°F | Sunny | 2 to 6 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Vergennes (37.902, -89.340). Updated through the day.
Growing snapshot for Vergennes
Last spring frost
Apr 6
First fall frost
Oct 22
Growing season
199 days
Hardiness zone
7a
More local growing data for Vergennes: nearby ZIP 62994 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Ava
Campbell Hill
Carbondale
De Soto
Dowell
Elkville
Gorham
Grand Tower
Harrison
Makanda
Murphysboro
Rockwood
Climate data from the nearest NOAA station, Du Quoin 4 Se, Il (10.1 mi from Vergennes). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.