Vienna, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vienna, a city in Johnson County, Illinois.
Overnight
64°F
Patchy Fog
Patchy fog after 5am. Mostly clear, with a low around 64. Wind around 0 mph.
7-day forecast for Vienna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Patchy Fog | 0 mph | 0% |
| Tuesday | 88°F | Patchy Fog then Sunny | 2 mph ENE | 0% |
| Tuesday Night | 64°F | Mostly Clear | 2 mph ENE | 0% |
| Wednesday | 90°F | Sunny | 2 mph SSW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 1 mph SSW | 0% |
| Thursday | 90°F | Slight Chance Rain Showers | 1 to 6 mph SSW | 17% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 2 mph S | 54% |
| Friday | 89°F | Chance Showers And Thunderstorms | 1 to 6 mph SSW | 54% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 2 mph SW | 41% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 33% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SSW | 21% |
| Sunday | 90°F | Mostly Sunny | 0 to 7 mph SSW | 9% |
| Sunday Night | 71°F | Mostly Clear | 1 to 5 mph SSW | 6% |
| Monday | 92°F | Sunny | 1 to 7 mph SSW | 5% |
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 Aug 4, 2026.