Delafield, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Delafield, a city in Waukesha County, Wisconsin.
Tonight
61°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 61. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for Delafield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Showers And Thunderstorms | 10 to 15 mph E | 96% |
| Saturday | 69°F | Showers And Thunderstorms | 5 to 15 mph SE | 99% |
| Saturday Night | 59°F | Showers And Thunderstorms | 5 to 10 mph E | 75% |
| Sunday | 65°F | Chance Rain Showers | 10 to 15 mph NE | 37% |
| Sunday Night | 53°F | Mostly Cloudy | 10 to 15 mph NE | 7% |
| Monday | 62°F | Slight Chance Rain Showers | 10 to 15 mph NE | 15% |
| Monday Night | 49°F | Slight Chance Rain Showers | 10 mph NE | 15% |
| Tuesday | 61°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 15% |
| Tuesday Night | 49°F | Mostly Cloudy | 5 to 10 mph NE | 9% |
| Wednesday | 64°F | Partly Sunny | 5 to 10 mph NE | 9% |
| Wednesday Night | 49°F | Mostly Cloudy | 0 to 5 mph NE | 5% |
| Thursday | 66°F | Partly Sunny | 0 to 5 mph NE | 3% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 69°F | Mostly Sunny | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Delafield (43.067, -88.389). Updated through the day.
Growing snapshot for Delafield
Last spring frost
Apr 30
First fall frost
Oct 12
Growing season
164 days
Hardiness zone
5b
More local growing data for Delafield: nearby ZIP 53018 weather · frost dates · planting calendar · Wisconsin frost dates
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Climate data from the nearest NOAA station, Oconomowoc Wwtp, Wi (6.7 mi from Delafield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.