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

78°F

26°C

Humidity 54%
Wind Speed SE 7 mph
Barometer 30.25 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Aug 2:35 pm CDT
Extended Forecast for

Sister Bay WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a steady temperature around 76. East southeast wind around 6 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. East southeast wind around 6 mph becoming light and variable.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 9am. Partly sunny, with a high near 80. South wind 6 to 10 mph.

    High: 80 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 67. South southwest wind 7 to 9 mph. Chance of precipitation is 60%.

    Low: 67 °F

    T-storms
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 81. South wind 6 to 10 mph.

    High: 81 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a steady temperature around 76. East southeast wind around 6 mph.
Tonight
Mostly cloudy, with a low around 66. East southeast wind around 6 mph becoming light and variable.
Thursday
A 20 percent chance of showers and thunderstorms after 9am. Partly sunny, with a high near 80. South wind 6 to 10 mph.
Thursday Night
Showers and thunderstorms likely, mainly between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 67. South southwest wind 7 to 9 mph. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 81. South wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 70.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Tuesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sister Bay WI
 45.19°N 87.12°W (Elev. 630 ft)
Last Update:
2:41 pm CDT Aug 6, 2025
Forecast Valid:
2pm CDT Aug 6, 2025-6pm CDT Aug 12, 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