Sister Bay, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sister Bay, a village in Door County, Wisconsin.
Overnight
54°F
Areas Of Fog
Areas of fog and a chance of rain showers before 2am, then rain showers and areas of fog. Cloudy. Low around 54, with temperatures rising to around 56 overnight. South southeast wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Sister Bay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Areas Of Fog | 13 mph SSE | 93% |
| Wednesday | 60°F | Rain Showers | 14 mph S | 81% |
| Wednesday Night | 44°F | Chance Rain Showers | 12 mph SSW | 51% |
| Thursday | 53°F | Rain Showers Likely | 10 to 21 mph WNW | 72% |
| Thursday Night | 35°F | Rain Showers Likely | 21 mph N | 64% |
| Friday | 46°F | Chance Rain Showers | 14 to 18 mph N | 38% |
| Friday Night | 34°F | Mostly Cloudy | 6 to 13 mph N | 2% |
| Saturday | 48°F | Mostly Sunny | 7 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 6 mph W | 5% |
| Sunday | 53°F | Mostly Sunny | 7 to 10 mph W | 7% |
| Sunday Night | 35°F | Partly Cloudy | 7 mph W | 1% |
| Monday | 54°F | Mostly Sunny | 6 to 10 mph WSW | 2% |
| Monday Night | 38°F | Partly Cloudy | 8 mph W | 5% |
| Tuesday | 54°F | Mostly Sunny | 6 to 9 mph NW | 11% |
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 Nov 4, 2026.