Okauchee Lake, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Okauchee Lake, a community in Waukesha County, Wisconsin.
Today
68°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms. Cloudy, with a high near 68. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Okauchee Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 76% |
| Tonight | 59°F | Showers And Thunderstorms | 5 to 10 mph NE | 84% |
| Sunday | 66°F | Chance Rain Showers then Cloudy | 10 to 15 mph NE | 44% |
| Sunday Night | 51°F | Mostly Cloudy | 10 to 15 mph NE | 2% |
| Monday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 7% |
| Monday Night | 48°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
| Tuesday | 61°F | Partly Sunny | 5 to 15 mph NE | 7% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 63°F | Mostly Sunny | 5 to 10 mph NE | 4% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 66°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Okauchee Lake (43.126, -88.439). Updated through the day.
Growing snapshot for Okauchee Lake
Last spring frost
Apr 30
First fall frost
Oct 12
Growing season
164 days
Hardiness zone
5b
More local growing data for Okauchee Lake: nearby ZIP 53069 weather · frost dates · planting calendar · Wisconsin frost dates
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Climate data from the nearest NOAA station, Oconomowoc Wwtp, Wi (3.7 mi from Okauchee Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.