Germantown, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a city in Montgomery County, Ohio.
Today
85°F
Sunny
Sunny, with a high near 85. Northeast wind around 5 mph.
7-day forecast for Germantown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 5 mph NE | 0% |
| Tonight | 64°F | Mostly Clear | 3 mph N | 1% |
| Wednesday | 88°F | Sunny | 1 to 5 mph NW | 11% |
| Wednesday Night | 67°F | Partly Cloudy | 1 to 5 mph W | 5% |
| Thursday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 8 mph SW | 31% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 7 mph SW | 65% |
| Friday | 86°F | Showers And Thunderstorms Likely | 3 to 8 mph SW | 65% |
| Friday Night | 67°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 65% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 31% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 31% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 10 mph SW | 15% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 16% |
| Monday | 90°F | Chance Showers And Thunderstorms | 7 to 13 mph SW | 25% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 to 9 mph SW | 31% |
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 Aug 4, 2026.