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

69°F

21°C

Humidity 93%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 14 Jul 11:35 pm CDT
Extended Forecast for

Sister Bay WI

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 70. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Heat index values as high as 87. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Partly cloudy, with a low around 65. South wind 6 to 10 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Northeast wind 6 to 9 mph. Chance of precipitation is 50%.

    High: 75 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 59. North northeast wind around 10 mph. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 72.

    High: 72 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a steady temperature around 70. Calm wind becoming south southwest around 6 mph after midnight.
Tuesday
Sunny, with a high near 84. Heat index values as high as 87. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Partly cloudy, with a low around 65. South wind 6 to 10 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Northeast wind 6 to 9 mph. Chance of precipitation is 50%.
Wednesday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 59. North northeast wind around 10 mph. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 62.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 79.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 79.
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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:
10:41 pm CDT Jul 14, 2025
Forecast Valid:
11pm CDT Jul 14, 2025-6pm CDT Jul 21, 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