Sister Bay, WI Weather Forecast
Local 7-day forecast
Areas Of Fog then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Sister Bay, WI in one place.
Areas of fog before 9am, then a slight chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms. Partly sunny. High near 76, with temperatures falling to around 71 in the afternoon. South southeast wind 2 to 12 mph. Chance of precipitation is 30%. 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: Jun 9, 2026 8:54 PM CDT.
The active forecast window currently covers Jun 10 to Jun 16, 2026 for Sister Bay, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 10 to Jun 16, 2026
- Latest sync
- Jun 9, 2026 8:54 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Sister Bay
Thursday looks like the warmest upcoming period in Sister Bay at 81 degrees F.
Sunday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Friday at about 14 mph WSW.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 9, 2026 8:54 PM CDT
- 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
A chance of showers and thunderstorms before 11pm, then showers and thunderstorms between 11pm and 1am, then a slight chance of showers and thunderstorms between 1am and 3am. Mostly cloudy. Low around 59, with temperatures rising to around 63 overnight. South southwest wind 8 to 12 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81. Heat index values as high as 77. South southwest wind 6 to 9 mph. Chance of precipitation is 50%.
Showers and thunderstorms. Mostly cloudy, with a low around 55. Southwest wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
A slight chance of rain showers before 7am. Sunny, with a high near 78. Chance of precipitation is 20%.
Mostly clear, with a low around 56.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Sunny, with a high near 75. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 52. Chance of precipitation is 40%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 72. Chance of precipitation is 20%.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 20%.
A slight chance of rain showers. Partly sunny, with a high near 71. Chance of precipitation is 20%.
A slight chance of rain showers. Partly cloudy, with a low around 51. Chance of precipitation is 20%.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 71. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jun 10
|
Areas Of Fog then Slight Chance Showers And Thunderstorms
|
76°F |
2 to 12 mph
SSE
|
|
Wednesday Night
Jun 10
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
59°F |
8 to 12 mph
SSW
|
|
Thursday
Jun 11
|
Mostly Sunny then Chance Showers And Thunderstorms
|
81°F |
6 to 9 mph
SSW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms
|
55°F |
13 mph
SW
|
|
Friday
Jun 12
|
Slight Chance Rain Showers then Sunny
|
78°F |
14 mph
WSW
|
|
Friday Night
Jun 12
|
Mostly Clear
|
56°F |
8 to 12 mph
WSW
|
|
Saturday
Jun 13
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
75°F |
9 to 13 mph
WSW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
52°F |
7 to 10 mph
WNW
|
|
Sunday
Jun 14
|
Slight Chance Rain Showers then Mostly Sunny
|
72°F |
9 mph
NNW
|
|
Sunday Night
Jun 14
|
Mostly Cloudy then Slight Chance Rain Showers
|
51°F |
8 mph
N
|
|
Monday
Jun 15
|
Slight Chance Rain Showers
|
71°F |
8 mph
N
|
|
Monday Night
Jun 15
|
Slight Chance Rain Showers
|
51°F |
7 mph
N
|
|
Tuesday
Jun 16
|
Chance Showers And Thunderstorms
|
71°F |
9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sister Bay.
