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.

Mostly Cloudy

37°F

3°C

Humidity 44%
Wind Speed NW 10 G 17 mph
Barometer 29.81 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 16 Nov 12:55 pm CST
Extended Forecast for

Sister Bay WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 41. Northwest wind 16 to 18 mph, with gusts as high as 28 mph.

    High: 41 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 31. Northwest wind 11 to 15 mph, with gusts as high as 28 mph.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 40. Northwest wind 6 to 11 mph becoming light north northwest in the afternoon.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Calm wind becoming northeast around 5 mph after midnight.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain and snow before 9am, then a slight chance of rain. Mostly cloudy, with a high near 41. East northeast wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 41. Northwest wind 16 to 18 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 31. Northwest wind 11 to 15 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 40. Northwest wind 6 to 11 mph becoming light north northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 30. Calm wind becoming northeast around 5 mph after midnight.
Tuesday
A slight chance of rain and snow before 9am, then a slight chance of rain. Mostly cloudy, with a high near 41. East northeast wind 5 to 7 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 35.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 47.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 45.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 31.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 42.
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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:
12:01 pm CST Nov 16, 2025
Forecast Valid:
1pm CST Nov 16, 2025-6pm CST Nov 22, 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