Vandalia, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vandalia, a city in Montgomery County, Ohio.
Overnight
57°F
Clear
Clear, with a low around 57. East wind around 3 mph.
7-day forecast for Vandalia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Clear | 3 mph E | 0% |
| Tuesday | 85°F | Sunny | 3 mph NE | 0% |
| Tuesday Night | 64°F | Mostly Clear | 3 mph N | 1% |
| Wednesday | 88°F | Sunny | 1 to 5 mph N | 10% |
| Wednesday Night | 67°F | Partly Cloudy | 5 mph W | 2% |
| Thursday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph SW | 43% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SW | 69% |
| Friday | 85°F | Showers And Thunderstorms Likely | 3 to 9 mph SW | 69% |
| Friday Night | 68°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 61% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 30% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph SW | 30% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 12 mph SW | 17% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 20% |
| Monday | 89°F | Chance Showers And Thunderstorms | 8 to 13 mph SW | 27% |
Forecast source: National Weather Service (api.weather.gov) for Vandalia (39.879, -84.192). Updated through the day.
Growing snapshot for Vandalia
Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
194 days
Hardiness zone
6b
More local growing data for Vandalia: nearby ZIP 45377 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
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Union
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Climate data from the nearest NOAA station, Dayton Intl Ap, Oh (0.1 mi from Vandalia). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.