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.

Partly Cloudy

81°F

27°C

Humidity 48%
Wind Speed SE 7 mph
Barometer 30.08 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 3 Oct 2:35 pm CDT
Extended Forecast for

Sister Bay WI

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 4pm. Mostly sunny, with a high near 78. South wind around 7 mph.

    High: 78 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 62. South wind around 7 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80. South southwest wind 6 to 15 mph, with gusts as high as 21 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 74. South wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 57.

    Low: 57 °F

    Mostly Clear
    then Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 4pm. Mostly sunny, with a high near 78. South wind around 7 mph.
Tonight
Mostly clear, with a low around 62. South wind around 7 mph.
Saturday
Sunny, with a high near 80. South southwest wind 6 to 15 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 63. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 74. South wind 11 to 18 mph, with gusts as high as 28 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 57.
Monday
A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 65.
Monday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 50.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sister Bay WI
 45.19°N 87.12°W (Elev. 630 ft)
Last Update:
2:41 pm CDT Oct 3, 2025
Forecast Valid:
2pm CDT Oct 3, 2025-6pm CDT Oct 9, 2025
 
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