Delafield, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Delafield, a city in Waukesha County, Wisconsin.
This Afternoon
70°F
Light Rain Likely
Rain before 3pm, then rain likely and a slight chance of thunderstorms. Cloudy, with a high near 70. South wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Delafield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Light Rain Likely | 15 mph S | 82% |
| Tonight | 58°F | Light Rain | 10 to 15 mph S | 93% |
| Wednesday | 62°F | Light Rain | 10 to 15 mph S | 85% |
| Wednesday Night | 47°F | Chance Light Rain | 10 mph SW | 52% |
| Thursday | 54°F | Light Rain Likely | 5 to 10 mph W | 73% |
| Thursday Night | 40°F | Chance Light Rain | 5 to 10 mph NW | 54% |
| Friday | 49°F | Slight Chance Light Rain then Mostly Cloudy | 10 to 15 mph N | 22% |
| Friday Night | 33°F | Mostly Cloudy | 0 to 5 mph N | 3% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph W | 3% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph W | 7% |
| Sunday | 57°F | Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 5% |
| Monday | 59°F | Mostly Sunny | 5 to 15 mph SW | 2% |
| Monday Night | 39°F | Partly Cloudy | 5 to 10 mph W | 1% |
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 Nov 3, 2026.