Sister Bay, WI Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Sister Bay, WI in one place.
Mostly cloudy, with a high near 74. East southeast wind around 8 mph.
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 7, 2026 8:07 PM CDT.
The active forecast window currently covers Jun 8 to Jun 14, 2026 for Sister Bay, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 8 to Jun 14, 2026
- Latest sync
- Jun 7, 2026 8:07 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Sister Bay
Wednesday looks like the warmest upcoming period in Sister Bay at 79 degrees F.
Monday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Wednesday at about 6 to 16 mph SSE.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 7, 2026 8:07 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 slight chance of showers and thunderstorms between 7pm and 8pm, then showers and thunderstorms. Mostly cloudy. Low around 54, with temperatures rising to around 58 overnight. Southeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain showers before 1pm. Partly sunny, with a high near 77. Heat index values as high as 76. South southeast wind around 6 mph. Chance of precipitation is 40%.
Mostly cloudy, with a low around 54. South southeast wind around 5 mph.
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 58. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 57. Chance of precipitation is 40%.
Sunny, with a high near 79.
A slight chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 58. Chance of precipitation is 20%.
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 77. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 54. Chance of precipitation is 30%.
A chance of rain showers. Mostly sunny, with a high near 75. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Jun 8
|
Mostly Cloudy
|
74°F |
8 mph
ESE
|
|
Monday Night
Jun 8
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
|
54°F |
6 mph
SE
|
|
Tuesday
Jun 9
|
Chance Rain Showers
|
77°F |
6 mph
SSE
|
|
Tuesday Night
Jun 9
|
Mostly Cloudy
|
54°F |
5 mph
SSE
|
|
Wednesday
Jun 10
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
79°F |
6 to 16 mph
SSE
|
|
Wednesday Night
Jun 10
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
58°F |
12 to 16 mph
S
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
79°F |
10 to 14 mph
SSW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms
|
57°F |
13 mph
WSW
|
|
Friday
Jun 12
|
Sunny
|
79°F |
13 mph
WSW
|
|
Friday Night
Jun 12
|
Slight Chance Showers And Thunderstorms
|
58°F |
7 to 12 mph
SW
|
|
Saturday
Jun 13
|
Chance Showers And Thunderstorms
|
77°F |
10 mph
SSW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
54°F |
6 to 9 mph
W
|
|
Sunday
Jun 14
|
Chance Rain Showers
|
75°F |
7 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sister Bay.
