Germantown, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a village in Washington County, Wisconsin.
Tonight
58°F
Light Rain
Rain. Cloudy, with a low around 58. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Germantown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Light Rain | 5 to 10 mph S | 84% |
| Wednesday | 62°F | Chance Light Rain then Cloudy | 10 to 15 mph S | 47% |
| Wednesday Night | 46°F | Cloudy then Slight Chance Light Rain | 15 mph SW | 20% |
| Thursday | 54°F | Chance Light Rain | 10 to 15 mph W | 51% |
| Thursday Night | 39°F | Light Rain Likely | 5 to 10 mph NW | 55% |
| Friday | 49°F | Chance Light Rain | 10 to 15 mph N | 25% |
| Friday Night | 33°F | Mostly Cloudy | 0 to 5 mph N | 5% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 3% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 8% |
| Sunday | 58°F | Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 5% |
| Monday | 59°F | Mostly Sunny | 5 to 15 mph W | 2% |
| Monday Night | 39°F | Partly Cloudy | 5 to 10 mph W | 2% |
| Tuesday | 59°F | Sunny | 5 to 10 mph NW | 0% |
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 Nov 4, 2026.