Germantown, WI Weather & Growing Conditions
Overnight
58°F
Light Rain
Rain. Cloudy, with a low around 58. South wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Light Rain | 10 mph S | 81% |
| Wednesday | 63°F | Chance Light Rain | 10 to 15 mph S | 38% |
| Wednesday Night | 45°F | Cloudy then Chance Light Rain | 15 mph SW | 39% |
| Thursday | 55°F | Light Rain Likely | 10 to 15 mph W | 58% |
| Thursday Night | 37°F | Chance Light Rain then Mostly Cloudy | 10 mph N | 34% |
| Friday | 48°F | Slight Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 15% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph W | 3% |
| Sunday | 55°F | Sunny | 5 to 15 mph W | 7% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 2% |
| Monday | 59°F | Sunny | 5 to 10 mph W | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Tuesday | 59°F | Sunny | 5 to 10 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Germantown, WI
Last spring frost
May 6
First fall frost
Oct 8
Growing season
154 days
Hardiness zone
5b
Explore more for Germantown, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Germantown, Wi (0.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.