Germantown, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a village in Washington County, Wisconsin.
This Afternoon
68°F
Rain Showers Likely
Rain showers likely. Cloudy. High near 68, with temperatures falling to around 63 in the afternoon. East wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Germantown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Rain Showers Likely | 10 mph E | 65% |
| Tonight | 58°F | Showers And Thunderstorms | 10 to 15 mph E | 97% |
| Saturday | 69°F | Showers And Thunderstorms | 10 to 15 mph SE | 95% |
| Saturday Night | 58°F | Showers And Thunderstorms Likely | 10 mph NE | 72% |
| Sunday | 66°F | Chance Rain Showers | 10 to 20 mph NE | 41% |
| Sunday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 16% |
| Monday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 14% |
| Monday Night | 49°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 15 mph NE | 15% |
| Tuesday | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 15% |
| Tuesday Night | 49°F | Mostly Cloudy | 5 to 10 mph NE | 12% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 12% |
| Wednesday Night | 49°F | Mostly Cloudy | 0 to 5 mph NE | 6% |
| Thursday | 67°F | Partly Sunny | 0 to 5 mph NE | 3% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov) for Germantown (43.235, -88.125). Updated through the day.
Growing snapshot for Germantown
Last spring frost
May 6
First fall frost
Oct 8
Growing season
154 days
Hardiness zone
5b
More local growing data for Germantown: nearby ZIP 53022 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Germantown, Wi (0.6 mi from Germantown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.