National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Ephraim-Gibraltar Airport (K3D2)

Lat: 45.14°NLon: 87.19°WElev: 773ft.

Overcast

48°F

9°C

Humidity 77%
Wind Speed NE 6 mph
Barometer 30.24 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 14 Oct 10:35 pm CDT
Extended Forecast for

Sister Bay WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Northeast wind 6 to 8 mph.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain, mainly after 4pm. High near 54. Southeast wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Cloudy then
    Rain

  • Thursday Night

    Thursday Night: Rain, mainly before 2am. Low around 44. Light and variable wind becoming north northwest 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Rain

  • Friday

    Friday: Rain, mainly before 1pm. High near 52. Breezy, with a north northwest wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 80%.

    High: 52 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. North wind 16 to 21 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 38 mph.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. Northeast wind 6 to 8 mph.
Thursday
Rain, mainly after 4pm. High near 54. Southeast wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain, mainly before 2am. Low around 44. Light and variable wind becoming north northwest 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 1pm. High near 52. Breezy, with a north northwest wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 80%.
Friday Night
Partly cloudy, with a low around 37. North wind 16 to 21 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 38 mph.
Saturday
Sunny, with a high near 55.
Saturday Night
Clear, with a low around 40.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 44.
Monday
Mostly sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Mostly sunny, with a high near 63.
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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:
8:56 pm CDT Oct 14, 2026
Forecast Valid:
10pm CDT Oct 14, 2026-6pm CDT Oct 21, 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