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

57°F

14°C

Humidity 39%
Wind Speed NW 7 mph
Barometer 30.13 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 4 Oct 8:15 pm CDT
Extended Forecast for

Sister Bay WI

  • Tonight

    Tonight: A chance of sprinkles between 11pm and midnight. Mostly cloudy, then gradually becoming clear, with a low around 44. Northwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Chance
    Sprinkles

  • Monday

    Monday: Sunny, with a high near 58. Northwest wind 6 to 11 mph becoming light in the afternoon.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 47. Calm wind becoming south southwest 5 to 8 mph in the evening.

    Low: 47 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 66. South southwest wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 66 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. West wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of sprinkles between 11pm and midnight. Mostly cloudy, then gradually becoming clear, with a low around 44. Northwest wind around 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 58. Northwest wind 6 to 11 mph becoming light in the afternoon.
Monday Night
Increasing clouds, with a low around 47. Calm wind becoming south southwest 5 to 8 mph in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 66. South southwest wind 13 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 51. West wind 8 to 13 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Mostly sunny, with a high near 67.
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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:
7:11 pm CDT Oct 4, 2026
Forecast Valid:
8pm CDT Oct 4, 2026-6pm CDT Oct 11, 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