A Flood Warning for a Glacial Lake Outburst Flood has been issued for Mendenhall Lake and Mendenhall River. Click here to go to our Monitoring page...

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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds 5 kt or less. Mostly sunny. Seas around 2 ft.

      High: 62 °F

      Light Wind
      2ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.

      Low: 54 °F

      Light Wind
      2ft

    • Friday

      Friday:Variable winds 5 kt or less. Sunny. Seas around 2 ft.

      High: 64 °F

      Light Wind
      2ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Mostly clear. Seas around 3 ft.

      Low: 54 °F

      Light Wind
      3ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Sunny. Seas around 3 ft.

      High: 61 °F

      Light Wind
      3ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Partly cloudy. Seas around 3 ft.

      Low: 52 °F

      Light Wind
      3ft

    • Sunday

      Sunday:Variable winds 5 kt or less. Partly sunny. Seas 2 to 3 ft.

      High: 59 °F

      Light Wind
      2-3ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

      Low: 51 °F

      Light Wind
      2ft

    • Monday

      Monday:Variable winds 5 kt or less. A chance of showers.   Seas 2 to 3 ft.

      High: 58 °F

      Light Wind
      2-3ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:24 am AKDT Aug 13, 2026
Forecast Valid: 8am AKDT Aug 13, 2026-6pm AKDT Aug 19, 2026

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Detailed Forecast


Synopsis: High pressure in the Gulf will linger through the end of the week into the weekend. Winds moderate to fresh for the outer coastal waters and N-S oriented channels will diminish into the weekend. Localized wind shifts due to sea breezes possible, but overall wind pattern is expected to be N to NW. Seas 5 to 7 feet in outer coastal waters will trend downward by the weekend.

A Marine Weather Statement is in effect for Stephens Passage due to trees and other debris in the waters due to the ongoing Mendenhall River flood.

Today
Variable winds 5 kt or less. Mostly sunny. Seas around 2 ft.
Tonight
Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.
Friday
Variable winds 5 kt or less. Sunny. Seas around 2 ft.
Friday Night
Variable winds 5 kt or less. Mostly clear. Seas around 3 ft.
Saturday
Variable winds 5 kt or less. Sunny. Seas around 3 ft.
Saturday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 3 ft.
Sunday
Variable winds 5 kt or less. Partly sunny. Seas 2 to 3 ft.
Sunday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.
Monday
Variable winds 5 kt or less. A chance of showers. Seas 2 to 3 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 58.2°N 136.63°W
Last Update: 6:24 am AKDT Aug 13, 2026
Forecast Valid: 8am AKDT Aug 13, 2026-6pm AKDT Aug 19, 2026
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