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

18°F

-8°C

Humidity 53%
Wind Speed N 9 G 16 mph
Barometer 30.24 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 7 Dec 3:35 pm CST
Extended Forecast for

Sister Bay WI

  • Tonight

    Tonight: Partly cloudy, with a low around 15. North northwest wind 5 to 11 mph.

    Low: 15 °F

    Partly Cloudy

  • Monday

    Monday: A chance of flurries after noon. Mostly cloudy, with a high near 26. West wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 24 mph.

    High: 26 °F

    Chance
    Flurries

  • Monday Night

    Monday Night: A chance of flurries before 9pm, then snow, mainly after midnight. Steady temperature around 23. Breezy, with a south southwest wind 16 to 22 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Chance Snow
    then Snow and
    Breezy

  • Tuesday

    Tuesday: A 40 percent chance of snow. Mostly cloudy, with a high near 31. West wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 31 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow. Low around 24. Southwest wind 7 to 12 mph becoming north northeast 15 to 20 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 90%.

    Low: 24 °F

    Snow

  • Wednesday

    Wednesday: A 50 percent chance of snow, mainly before noon. Cloudy, with a high near 31.

    High: 31 °F

    Chance Snow
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 25.

    High: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 15. North northwest wind 5 to 11 mph.
Monday
A chance of flurries after noon. Mostly cloudy, with a high near 26. West wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 24 mph.
Monday Night
A chance of flurries before 9pm, then snow, mainly after midnight. Steady temperature around 23. Breezy, with a south southwest wind 16 to 22 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
A 40 percent chance of snow. Mostly cloudy, with a high near 31. West wind 8 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Snow. Low around 24. Southwest wind 7 to 12 mph becoming north northeast 15 to 20 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 90%.
Wednesday
A 50 percent chance of snow, mainly before noon. Cloudy, with a high near 31.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16.
Thursday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 25.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 15.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 24.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 12.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 20.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 9.
Sunday
A 20 percent chance of snow. Mostly cloudy, with a high near 21.
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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:
3:11 pm CST Dec 7, 2025
Forecast Valid:
3pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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