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

Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Ephraim-Gibraltar Airport (K3D2)

Lat: 45.14°NLon: 87.19°WElev: 773ft.

Fair

71°F

22°C

Humidity 53%
Wind Speed SW 7 mph
Barometer 30.08 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 2 Sep 10:55 am CDT
Extended Forecast for

Sister Bay WI

  • Today

    Today: Sunny, with a high near 73. South wind 6 to 9 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 58. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Partly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 67. Southwest wind 11 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 45. Northwest wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 59. West southwest wind 11 to 13 mph, with gusts as high as 18 mph.

    High: 59 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 61.

    High: 61 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers. Partly sunny, with a high near 61.

    High: 61 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 73. South wind 6 to 9 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 58. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm. High near 67. Southwest wind 11 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 45. Northwest wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 59. West southwest wind 11 to 13 mph, with gusts as high as 18 mph.
Thursday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 47.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 61.
Saturday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 47.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 51.
Monday
Mostly sunny, with a high near 66.
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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:
9:21 am CDT Sep 2, 2025
Forecast Valid:
11am CDT Sep 2, 2025-6pm CDT Sep 8, 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