Vergennes, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vergennes, a village in Jackson County, Illinois.
This Afternoon
78°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3pm and 5pm, then a chance of showers and thunderstorms. Partly sunny. High near 78, with temperatures falling to around 74 in the afternoon. South wind 18 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
7-day forecast for Vergennes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Slight Chance Showers And Thunderstorms | 18 to 22 mph S | 48% |
| Tonight | 55°F | Showers And Thunderstorms | 7 to 16 mph S | 97% |
| 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% |
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 3, 2026.