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

60°F

16°C

Humidity 92%
Wind Speed NW 8 mph
Barometer 29.93 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 27 Aug 6:15 am CDT
Extended Forecast for

Sister Bay WI

  • Today

    Today: Mostly sunny, with a high near 72. North northwest wind 7 to 13 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of sprinkles between 3am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 56. East wind around 6 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 9am, then a chance of sprinkles between 9am and 11am. Mostly sunny, with a high near 71. East wind 6 to 9 mph. Chance of precipitation is 20%.

    High: 71 °F

    Slight Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Southeast wind 6 to 8 mph becoming south southwest after midnight.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 76. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 76 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 72. North northwest wind 7 to 13 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph.
Tonight
A chance of sprinkles between 3am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 56. East wind around 6 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers before 9am, then a chance of sprinkles between 9am and 11am. Mostly sunny, with a high near 71. East wind 6 to 9 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 61. Southeast wind 6 to 8 mph becoming south southwest after midnight.
Saturday
A 30 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 76. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Saturday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sister Bay WI
 45.19°N 87.12°W (Elev. 630 ft)
Last Update:
4:51 am CDT Aug 27, 2026
Forecast Valid:
6am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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