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

62°F

17°C

Humidity 85%
Wind Speed N 14 G 18 mph
Barometer 29.93 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 2 Aug 7:15 am CDT
Extended Forecast for

Sister Bay WI

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 74. North northeast wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 74 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. North northeast wind 5 to 8 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77. Light and variable wind becoming south southeast around 5 mph in the afternoon.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. South southeast wind around 7 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 79. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 79 °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 61. Chance of precipitation is 60%.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 74. North northeast wind 9 to 13 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 58. North northeast wind 5 to 8 mph.
Monday
Sunny, with a high near 77. Light and variable wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 62. South southeast wind around 7 mph.
Tuesday
Increasing clouds, with a high near 79. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 76.
Wednesday Night
Mostly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 81.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 63.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sister Bay WI
 45.19°N 87.12°W (Elev. 630 ft)
Last Update:
6:01 am CDT Aug 2, 2026
Forecast Valid:
7am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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