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

51°F

11°C

Humidity 77%
Wind Speed E 6 mph
Barometer 30.15 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 9 Oct 7:35 pm CDT
Extended Forecast for

Sister Bay WI

  • Tonight

    Tonight: Increasing clouds, with a temperature rising to around 58 by 3am. East southeast wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 54 °F⇑

    Increasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 69. South wind 13 to 21 mph, with gusts as high as 30 mph.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. South wind 13 to 18 mph, with gusts as high as 29 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 68. South wind 11 to 13 mph, with gusts as high as 18 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. South southwest wind 7 to 9 mph.

    Low: 55 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 58.

    High: 58 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a temperature rising to around 58 by 3am. East southeast wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 69. South wind 13 to 21 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 58. South wind 13 to 18 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 68. South wind 11 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 55. South southwest wind 7 to 9 mph.
Columbus Day
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 67.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 45.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 60.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 45.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 57.
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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:
5:51 pm CDT Oct 9, 2026
Forecast Valid:
7pm CDT Oct 9, 2026-6pm CDT Oct 16, 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