Sister Bay, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sister Bay, a village in Door County, Wisconsin.
This Afternoon
65°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 65, with temperatures falling to around 60 in the afternoon. East northeast wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Sister Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Chance Rain Showers | 8 mph ENE | 33% |
| Tonight | 54°F | Chance Rain Showers | 5 to 8 mph ESE | 36% |
| Saturday | 65°F | Chance Rain Showers | 10 mph ESE | 47% |
| Saturday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 7 to 12 mph NE | 32% |
| Sunday | 66°F | Partly Sunny | 12 to 15 mph NNE | 3% |
| Sunday Night | 51°F | Mostly Cloudy | 15 mph NE | 0% |
| Monday | 61°F | Partly Sunny | 14 mph ENE | 0% |
| Monday Night | 50°F | Mostly Cloudy | 9 to 13 mph ENE | 1% |
| Tuesday | 63°F | Mostly Sunny | 9 to 13 mph ENE | 3% |
| Tuesday Night | 49°F | Partly Cloudy | 7 to 12 mph E | 6% |
| Wednesday | 65°F | Mostly Sunny | 7 to 10 mph ENE | 10% |
| Wednesday Night | 51°F | Partly Cloudy | 3 to 7 mph ENE | 6% |
| Thursday | 67°F | Mostly Sunny | 3 to 7 mph ENE | 3% |
| Thursday Night | 51°F | Partly Cloudy | 3 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov) for Sister Bay (45.187, -87.129). Updated through the day.
Growing snapshot for Sister Bay
Last spring frost
May 14
First fall frost
Oct 18
Growing season
155 days
Hardiness zone
5b
More local growing data for Sister Bay: nearby ZIP 54234 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ephraim 1Ne-Wwtp, Wi (2.7 mi from Sister Bay). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.