Waukesha, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Waukesha, a city in Waukesha County, Wisconsin.
Today
63°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 63, with temperatures falling to around 54 in the afternoon. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Waukesha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Chance Rain Showers | 10 to 15 mph SW | 25% |
| Tonight | 45°F | Cloudy then Chance Rain Showers | 10 to 15 mph SW | 27% |
| Thursday | 54°F | Chance Rain Showers then Chance Light Rain | 10 to 15 mph W | 53% |
| Thursday Night | 38°F | Chance Light Rain then Cloudy | 10 mph N | 34% |
| Friday | 47°F | Mostly Cloudy | 5 to 15 mph N | 9% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 49°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 2% |
| Sunday | 54°F | Sunny | 5 to 10 mph W | 7% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph W | 1% |
| Monday | 58°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Tuesday | 59°F | Sunny | 5 mph NW | 2% |
| Tuesday Night | 38°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Waukesha (43.009, -88.245). Updated through the day.
Growing snapshot for Waukesha
Last spring frost
Apr 30
First fall frost
Oct 14
Growing season
164 days
Hardiness zone
5b
More local growing data for Waukesha: nearby ZIP 53186 weather · frost dates · planting calendar · Wisconsin frost dates
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Waukesha
Climate data from the nearest NOAA station, Brookfield Wwtp, Wi (2.5 mi from Waukesha). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.