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

Ephraim-Gibraltar Airport (K3D2)

Lat: 45.14°NLon: 87.19°WElev: 773ft.

Fair

57°F

14°C

Humidity 79%
Wind Speed S 10 G 17 mph
Barometer 29.97 in
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 11 Oct 7:15 am CDT
Extended Forecast for

Sister Bay WI

  • Today

    Today: Sunny, with a high near 68. South wind around 15 mph, with gusts as high as 24 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 56. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: A 10 percent chance of showers after 5pm. Mostly cloudy, with a high near 72. East northeast wind 5 to 7 mph becoming south southwest in the morning.

    High: 72 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 53. North northeast wind 6 to 8 mph. Chance of precipitation is 80%.

    Low: 53 °F

    Chance
    Showers then
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 62. North wind 9 to 11 mph.

    High: 62 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 59.

    High: 59 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 68. South wind around 15 mph, with gusts as high as 24 mph.
Tonight
Increasing clouds, with a low around 56. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Columbus Day
A 10 percent chance of showers after 5pm. Mostly cloudy, with a high near 72. East northeast wind 5 to 7 mph becoming south southwest in the morning.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 53. North northeast wind 6 to 8 mph. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 62. North wind 9 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 59.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 43.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 56.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sister Bay WI
 45.19°N 87.12°W (Elev. 630 ft)
Last Update:
5:36 am CDT Oct 11, 2026
Forecast Valid:
7am CDT Oct 11, 2026-6pm CDT Oct 17, 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