Vergennes, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vergennes, a village in Jackson County, Illinois.
Today
88°F
Patchy Fog then Sunny
Patchy fog before 8am. Sunny, with a high near 88. East northeast wind around 2 mph.
7-day forecast for Vergennes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Patchy Fog then Sunny | 2 mph ENE | 0% |
| Tonight | 64°F | Mostly Clear | 2 mph E | 0% |
| Wednesday | 91°F | Sunny | 2 mph S | 0% |
| Wednesday Night | 69°F | Partly Cloudy | 3 mph S | 9% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 2 to 6 mph SSW | 33% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph S | 58% |
| Friday | 89°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph SW | 58% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 3 mph SSW | 43% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 5 mph SSW | 43% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SSW | 15% |
| Sunday | 92°F | Sunny | 3 to 9 mph SSW | 7% |
| Sunday Night | 72°F | Mostly Clear | 5 to 8 mph SSW | 4% |
| Monday | 94°F | Sunny | 5 to 10 mph SSW | 4% |
| Monday Night | 73°F | Mostly Clear | 6 to 9 mph SSW | 7% |
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 Aug 4, 2026.