Greendale, WI Weather & Growing Conditions
Today
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Cloudy, with a high near 68. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 78% |
| Tonight | 60°F | Showers And Thunderstorms | 5 to 10 mph E | 86% |
| Sunday | 64°F | Rain Showers Likely | 10 to 15 mph NE | 58% |
| Sunday Night | 53°F | Mostly Cloudy | 10 to 15 mph NE | 3% |
| Monday | 62°F | Cloudy | 15 mph NE | 7% |
| Monday Night | 51°F | Mostly Cloudy | 10 to 15 mph NE | 6% |
| Tuesday | 61°F | Partly Sunny | 10 to 15 mph NE | 8% |
| Tuesday Night | 51°F | Partly Cloudy | 5 to 15 mph NE | 7% |
| Wednesday | 62°F | Partly Sunny | 10 to 15 mph NE | 7% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NE | 4% |
| Thursday | 65°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Thursday Night | 52°F | Mostly Cloudy | 5 mph NE | 4% |
| Friday | 68°F | Mostly Sunny | 5 to 10 mph NE | 5% |
| Friday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greendale, WI
Last spring frost
May 3
First fall frost
Oct 14
Growing season
162 days
Hardiness zone
5b
Explore more for Greendale, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Hales Corners/Whitnall Park/Bo, Wi (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.