Vienna, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vienna, a city in Johnson County, Illinois.
Tonight
71°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 71. West northwest wind around 2 mph. Chance of precipitation is 20%.
7-day forecast for Vienna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph WNW | 17% |
| Saturday | 98°F | Sunny | 0 to 6 mph SW | 3% |
| Saturday Night | 72°F | Mostly Clear | 2 mph SSW | 1% |
| Sunday | 97°F | Sunny | 1 to 6 mph WSW | 2% |
| Sunday Night | 70°F | Partly Cloudy | 2 mph NNW | 4% |
| Monday | 91°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph N | 39% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 3 to 7 mph NNE | 39% |
| Tuesday | 79°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 6 to 10 mph N | 19% |
| Tuesday Night | 59°F | Partly Cloudy | 3 to 10 mph N | 8% |
| Wednesday | 77°F | Mostly Sunny | 7 mph N | 4% |
| Wednesday Night | 57°F | Partly Cloudy | 2 to 6 mph NNE | 4% |
| Thursday | 78°F | Mostly Sunny | 2 to 6 mph N | 3% |
| Thursday Night | 59°F | Partly Cloudy | 5 mph NNE | 3% |
| Friday | 78°F | Mostly Sunny | 3 to 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Vienna (37.414, -88.887). Updated through the day.
Growing snapshot for Vienna
Last spring frost
Apr 14
First fall frost
Oct 21
Growing season
189 days
Hardiness zone
7a
More local growing data for Vienna: nearby ZIP 62995 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dixon Springs Agric Ctr, Il (11.7 mi from Vienna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.