National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Ephraim-Gibraltar Airport (K3D2)

Lat: 45.14°NLon: 87.19°WElev: 773ft.

Overcast

40°F

4°C

Humidity 82%
Wind Speed NW 18 G 23 mph
Barometer 29.94 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 13 May 8:55 am CDT
Extended Forecast for

Sister Bay WI

  • Today

    Today: Mostly cloudy, with a high near 57. Breezy, with a north northwest wind 15 to 22 mph, with gusts as high as 36 mph.

    High: 57 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 40. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 42. South wind 7 to 10 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Friday

    Friday: A 40 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 62. South wind 13 to 20 mph, with gusts as high as 30 mph.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 63.

    High: 63 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 57. Breezy, with a north northwest wind 15 to 22 mph, with gusts as high as 36 mph.
Tonight
Mostly clear, with a low around 40. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 57. Light and variable wind becoming south southeast 5 to 7 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 42. South wind 7 to 10 mph.
Friday
A 40 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 62. South wind 13 to 20 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Sunny, with a high near 69.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 44.
Sunday
A 40 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 63.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 69.
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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:
8:37 am CDT May 13, 2026
Forecast Valid:
9am CDT May 13, 2026-6pm CDT May 19, 2026
 
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