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.

Partly Cloudy

58°F

14°C

Humidity 85%
Wind Speed NE 5 mph
Barometer 30.31 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Sep 12:35 am CDT
Extended Forecast for

Sister Bay WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. Northeast wind around 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly after 2pm. Increasing clouds, with a high near 64. East wind around 9 mph.

    High: 64 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers, mainly after 7pm. Mostly cloudy, with a low around 57. East wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers. Mostly cloudy, with a high near 63. East southeast wind 10 to 13 mph.

    High: 63 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. North northeast wind 8 to 11 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. Northeast wind around 10 mph.
Friday
A 30 percent chance of showers, mainly after 2pm. Increasing clouds, with a high near 64. East wind around 9 mph.
Friday Night
A 50 percent chance of showers, mainly after 7pm. Mostly cloudy, with a low around 57. East wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 63. East southeast wind 10 to 13 mph.
Saturday Night
Mostly cloudy, with a low around 57. North northeast wind 8 to 11 mph.
Sunday
Partly sunny, with a high near 64.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Mostly cloudy, with a high near 61.
Monday Night
Mostly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
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 87.15°W (Elev. 581 ft)
Last Update:
12:16 am CDT Sep 18, 2026
Forecast Valid:
12am CDT Sep 18, 2026-6pm CDT Sep 24, 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