Germantown, WI Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SW | 8% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph W | 87% |
| Wednesday | 75°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph SW | 64% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 0 to 5 mph NE | 40% |
| Thursday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 19% |
| Thursday Night | 58°F | Mostly Clear | 0 to 5 mph SW | 7% |
| Friday | 82°F | Sunny | 0 to 5 mph SW | 1% |
| Friday Night | 63°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 | 83°F | Chance Rain Showers | 5 mph S | 41% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 43% |
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 Aug 4, 2026.