Germantown, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a city in Montgomery County, Ohio.
This Afternoon
79°F
Mostly Cloudy
Mostly cloudy, with a high near 79. Northeast wind around 9 mph.
7-day forecast for Germantown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Mostly Cloudy | 9 mph NE | 1% |
| Tonight | 60°F | Partly Cloudy | 5 to 9 mph NE | 3% |
| Saturday | 83°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 6 mph SE | 48% |
| Saturday Night | 68°F | Showers And Thunderstorms Likely | 6 mph S | 70% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 52% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 52% |
| Monday | 75°F | Chance Showers And Thunderstorms | 9 to 13 mph NE | 52% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 48% |
| Tuesday | 73°F | Chance Showers And Thunderstorms | 13 mph NE | 41% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 8 to 15 mph NE | 39% |
| Wednesday | 72°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 mph N | 27% |
| Wednesday Night | 57°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph N | 21% |
| Thursday | 72°F | Partly Sunny | 7 to 10 mph N | 11% |
| Thursday Night | 56°F | Mostly Cloudy | 6 to 10 mph N | 11% |
Forecast source: National Weather Service (api.weather.gov) for Germantown (39.632, -84.365). Updated through the day.
Growing snapshot for Germantown
Last spring frost
Apr 24
First fall frost
Oct 19
Growing season
178 days
Hardiness zone
6b
More local growing data for Germantown: nearby ZIP 45327 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Franklin, Oh (6.9 mi from Germantown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.