Germantown, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Germantown, a village in Washington County, Wisconsin.
Overnight
62°F
Mostly Clear
Mostly clear, with a low around 62. Southwest wind around 5 mph.
7-day forecast for Germantown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 83°F | Mostly Sunny | 5 to 10 mph SW | 9% |
| Tuesday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 86% |
| Wednesday | 75°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 63% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 0 mph | 39% |
| Thursday | 78°F | Slight Chance Rain Showers then Mostly Sunny | 0 mph | 18% |
| Thursday Night | 58°F | Mostly Clear | 0 mph | 7% |
| Friday | 82°F | Sunny | 0 to 5 mph SW | 1% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph SW | 6% |
| Saturday | 84°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 15% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 28% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday Night | 65°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 52% |
| Monday | 82°F | Chance Rain Showers | 0 to 5 mph S | 41% |
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 Aug 4, 2026.