National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Ephraim-Gibraltar Airport (K3D2)

Lat: 45.14°NLon: 87.19°WElev: 773ft.

Partly Cloudy

65°F

18°C

Humidity 81%
Wind Speed N 15 G 20 mph
Barometer 29.94 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 2 Aug 9:35 am CDT
Extended Forecast for

Sister Bay WI

  • Today

    Today: Sunny, with a high near 72. North northeast wind 9 to 15 mph, with gusts as high as 20 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 58. North northeast wind 7 to 9 mph.

    Low: 58 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 74. North wind around 6 mph becoming light and variable.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. South southeast wind 7 to 9 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 76. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 76 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 73.

    High: 73 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 72. North northeast wind 9 to 15 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 58. North northeast wind 7 to 9 mph.
Monday
Sunny, with a high near 74. North wind around 6 mph becoming light and variable.
Monday Night
Mostly clear, with a low around 63. South southeast wind 7 to 9 mph.
Tuesday
Increasing clouds, with a high near 76. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 79.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sister Bay WI
 45.19°N 87.15°W (Elev. 581 ft)
Last Update:
8:36 am CDT Aug 2, 2026
Forecast Valid:
9am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation