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Green Bay, WI Local Forecast Office

11NM SSW Washington Island WI

Marine Point Forecast

[NOTICE]

Tonight
Low: 38 °F
⇑SSE 6kt
< 1ft
Friday
High: 50 °F
S 14kt
1-2ft
Friday Night
Low: 39 °F
S 17kt
3-4ft
Saturday
High: 43 °F
WNW 14kt
1-2ft
Saturday Night
Low: 32 °F
WNW 14kt
< 1ft
Sunday
High: 38 °F
NW 14kt
< 1ft
Sunday Night
Low: 31 °F
N 8kt
< 1ft
Monday
High: 41 °F
S 12kt
< 1ft
Monday Night
Low: 37 °F
S 19kt
2-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:58 pm CDT Apr 16, 2026
Forecast Valid: 4pm CDT Apr 16, 2026-6pm CDT Apr 23, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds less than 5 kt becoming SSE around 6 kt after midnight. Widespread dense fog, mainly between 1am and 3am. Waves 1 ft or less.

Friday

S wind 8 to 14 kt, with gusts as high as 20 kt. Areas of dense fog before noon. Waves 1 to 2 ft.

Friday Night

S wind 13 to 17 kt, with gusts as high as 24 kt. Showers and possibly a thunderstorm. Waves 3 to 4 ft.

Saturday

WNW wind 12 to 14 kt, with gusts as high as 20 kt. A chance of rain showers before 1pm, then a slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of snow showers after 4pm. Waves 1 to 2 ft.

Saturday Night

WNW wind around 14 kt, with gusts as high as 20 kt. Partly cloudy. Waves 1 ft or less.

Sunday

NW wind 9 to 14 kt, with gusts as high as 20 kt. Partly sunny. Waves 1 ft or less.

Sunday Night

N wind 5 to 8 kt becoming WNW after midnight. Mostly clear. Waves 1 ft or less.

Monday

W wind 6 to 12 kt becoming S in the afternoon. Winds could gust as high as 18 kt. Sunny. Waves 1 ft or less.

Monday Night

S wind 15 to 19 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 2 to 4 ft.

*Notices:

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.
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.