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.

Overcast

24°F

-4°C

Humidity 53%
Wind Speed N 14 G 25 mph
Barometer 29.70 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 10 Dec 2:35 pm CST
Extended Forecast for

Sister Bay WI

  • This Afternoon

    This Afternoon: A chance of flurries before 3pm. Cloudy, with a high near 28. North northwest wind 17 to 20 mph, with gusts as high as 29 mph.

    High: 28 °F

    Chance
    Flurries

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 20. Northwest wind 15 to 17 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 27. Northwest wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 27 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 19. West northwest wind 3 to 6 mph.

    Low: 19 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 26. West southwest wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 26 °F

    Partly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after noon. Partly sunny, with a high near 16.

    High: 16 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 7.

    Low: 7 °F

    Chance Snow

  • Sunday

    Sunday: Partly sunny, with a high near 20.

    High: 20 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of flurries before 3pm. Cloudy, with a high near 28. North northwest wind 17 to 20 mph, with gusts as high as 29 mph.
Tonight
Partly cloudy, with a steady temperature around 20. Northwest wind 15 to 17 mph, with gusts as high as 25 mph.
Thursday
Partly sunny, with a high near 27. Northwest wind 6 to 14 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 19. West northwest wind 3 to 6 mph.
Friday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 26. West southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Friday Night
A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 8.
Saturday
A 20 percent chance of snow after noon. Partly sunny, with a high near 16.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 7.
Sunday
Partly sunny, with a high near 20.
Sunday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 11.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 22.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Mostly cloudy, with a high near 33.
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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:
1:51 pm CST Dec 10, 2025
Forecast Valid:
2pm CST Dec 10, 2025-6pm CST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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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