Waukesha, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Waukesha, a village in Waukesha County, Wisconsin.
This Afternoon
66°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 1pm and 5pm, then showers and thunderstorms likely. Cloudy, with a high near 66. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Waukesha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 55% |
| Tonight | 61°F | Showers And Thunderstorms | 5 to 10 mph NE | 76% |
| Sunday | 65°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 34% |
| Sunday Night | 53°F | Mostly Cloudy | 10 to 15 mph NE | 8% |
| Monday | 61°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Monday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph NE | 19% |
| Tuesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 19% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 62°F | Mostly Sunny | 5 to 10 mph NE | 5% |
| Wednesday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 64°F | Mostly Sunny | 0 to 10 mph NE | 4% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 68°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Waukesha (42.960, -88.249). Updated through the day.
Growing snapshot for Waukesha
Last spring frost
May 1
First fall frost
Oct 13
Growing season
162 days
Hardiness zone
5b
More local growing data for Waukesha: nearby ZIP 53189 weather · frost dates · planting calendar · Wisconsin frost dates
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Waukesha
Climate data from the nearest NOAA station, Waukesha Wwtp, Wi (4.8 mi from Waukesha). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.