Waukesha, WI Weather & Growing Conditions
This Afternoon
63°F
Cloudy
Cloudy. High near 63, with temperatures falling to around 53 in the afternoon. Southwest wind 10 to 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Cloudy | 10 to 15 mph SW | 4% |
| Tonight | 45°F | Cloudy then Chance Light Rain | 10 to 15 mph SW | 49% |
| Thursday | 52°F | Light Rain | 10 mph W | 77% |
| Thursday Night | 36°F | Mostly Cloudy | 10 mph N | 13% |
| Friday | 46°F | Partly Sunny | 10 to 15 mph N | 3% |
| Friday Night | 29°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 57°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 60°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 to 10 mph W | 0% |
| Tuesday | 59°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 37°F | Partly Cloudy | 0 to 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Waukesha, WI
Last spring frost
Apr 30
First fall frost
Oct 14
Growing season
164 days
Hardiness zone
5b
Explore more for Waukesha, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Brookfield Wwtp, Wi (2.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.