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.

Fair

41°F

5°C

Humidity 60%
Wind Speed E 5 mph
Barometer 30.36 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 20 May 8:55 pm CDT
Extended Forecast for

Sister Bay WI

  • Tonight

    Tonight: Mostly clear, with a low around 37. Northeast wind 5 to 9 mph.

    Low: 37 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 54. East northeast wind around 8 mph.

    High: 54 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 39. East northeast wind around 7 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 59. East northeast wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 59 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Cloudy, with a low around 44. East wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    Low: 44 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 60.

    High: 60 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 67. Chance of precipitation is 20%.

    High: 67 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 37. Northeast wind 5 to 9 mph.
Thursday
Partly sunny, with a high near 54. East northeast wind around 8 mph.
Thursday Night
Increasing clouds, with a low around 39. East northeast wind around 7 mph.
Friday
Partly sunny, with a high near 59. East northeast wind 7 to 14 mph, with gusts as high as 23 mph.
Friday Night
Showers likely, mainly after 1am. Cloudy, with a low around 44. East wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 60.
Saturday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 46.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 67. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 47.
Memorial Day
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, 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:
8:36 pm CDT May 20, 2026
Forecast Valid:
9pm CDT May 20, 2026-6pm CDT May 27, 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