Germantown, OH Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a city in Montgomery County, Ohio.

Overnight

61°F

Rain

Rain. Cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Germantown

When	Temp	Forecast	Wind	Precip
Overnight	61°F	Rain	15 mph S	87%
Wednesday	67°F	Rain	14 to 18 mph S	100%
Wednesday Night	49°F	Chance Light Rain then Mostly Cloudy	6 to 13 mph SW	31%
Thursday	64°F	Mostly Sunny	6 to 14 mph SW	0%
Thursday Night	44°F	Partly Cloudy	2 to 8 mph SW	0%
Friday	58°F	Chance Light Rain	2 to 12 mph W	33%
Friday Night	37°F	Chance Light Rain then Mostly Cloudy	7 to 12 mph NW	33%
Saturday	54°F	Partly Sunny	9 mph NW	1%
Saturday Night	32°F	Partly Cloudy	6 mph NW	0%
Sunday	56°F	Mostly Sunny	3 to 12 mph W	3%
Sunday Night	32°F	Mostly Clear	3 to 8 mph W	3%
Monday	61°F	Sunny	3 to 9 mph W	2%
Monday Night	36°F	Mostly Clear	7 mph SW	1%
Tuesday	65°F	Sunny	6 to 9 mph W	1%

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

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 Nov 4, 2026.