Sister Bay, WI Weather Forecast
Local 7-day forecast
Chance Rain Showers then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Sister Bay, WI in one place.
A chance of rain showers before noon. Mostly cloudy. High near 45, with temperatures falling to around 43 in the afternoon. North wind 14 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Sister Bay, WI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Nov 5, 2026 12:30 PM CST.
The active forecast window currently covers Nov 6 to Nov 11, 2026 for Sister Bay, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 6 to Nov 11, 2026
- Latest sync
- Nov 5, 2026 12:30 PM CST
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Sister Bay
Monday looks like the warmest upcoming period in Sister Bay at 56 degrees F.
Friday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 14 to 22 mph N.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Nov 5, 2026 12:30 PM CST
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- GRB
- Radar station
- KGRB
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 34. North wind 7 to 13 mph, with gusts as high as 20 mph.
Sunny, with a high near 48. West northwest wind around 7 mph.
Mostly clear, with a low around 36.
Sunny, with a high near 53.
Mostly clear, with a low around 38.
Mostly sunny, with a high near 56.
Partly cloudy, with a low around 41.
Sunny, with a high near 54.
Partly cloudy, with a low around 39.
Mostly sunny, with a high near 51.
Mostly cloudy, with a low around 38.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Nov 6
|
Chance Rain Showers then Mostly Cloudy
|
45°F |
14 to 22 mph
N
|
|
Friday Night
Nov 6
|
Partly Cloudy
|
34°F |
7 to 13 mph
N
|
|
Saturday
Nov 7
|
Sunny
|
48°F |
7 mph
WNW
|
|
Saturday Night
Nov 7
|
Mostly Clear
|
36°F |
5 to 9 mph
WSW
|
|
Sunday
Nov 8
|
Sunny
|
53°F |
8 to 12 mph
W
|
|
Sunday Night
Nov 8
|
Mostly Clear
|
38°F |
7 mph
W
|
|
Monday
Nov 9
|
Mostly Sunny
|
56°F |
6 to 12 mph
SW
|
|
Monday Night
Nov 9
|
Partly Cloudy
|
41°F |
10 mph
WSW
|
|
Tuesday
Nov 10
|
Sunny
|
54°F |
7 to 10 mph
WNW
|
|
Tuesday Night
Nov 10
|
Partly Cloudy
|
39°F |
6 mph
NW
|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
51°F |
5 to 8 mph
NW
|
|
Wednesday Night
Nov 11
|
Mostly Cloudy
|
38°F |
7 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sister Bay.
