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Green Bay, WI Local Forecast Office

5NM SSE Washington Island WI

Marine Point Forecast

[NOTICE]

Wednesday
High: 75 °F
⇑S 6kt
< 1ft
Wednesday Night
Low: 66 °F
S 6kt⇓
< 1ft
Thursday
High: 77 °F
S 11kt
< 1ft
Thursday Night
Low: 66 °F
SSW 10kt
1ft
Friday
High: 75 °F
SW 8kt
1ft
Friday Night
Low: 64 °F
⇑E 6kt
< 1ft
Saturday
High: 74 °F
NNE 7kt
< 1ft
Saturday Night
Low: 62 °F
NNE 11kt
< 1ft
Sunday
High: 72 °F
NNE 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:51 am CDT Jul 29, 2026
Forecast Valid: 3am CDT Jul 29, 2026-6pm CDT Aug 4, 2026

View Nearby Observations

Detailed Forecast

Wednesday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Sunny. Waves 1 ft or less.

Wednesday Night

S wind around 6 kt becoming variable and less than 5 kt. Partly cloudy. Waves 1 ft or less.

Thursday

S wind 5 to 11 kt. Mostly sunny. Waves 1 ft or less.

Thursday Night

SSW wind 7 to 10 kt. Patchy smoke between 10pm and 2am. Waves around 1 ft.

Friday

SW wind 6 to 8 kt. A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Waves around 1 ft.

Friday Night

Variable winds less than 5 kt becoming E around 6 kt in the evening. Showers likely and possibly a thunderstorm. Waves 1 ft or less.

Saturday

NNE wind around 7 kt. A chance of showers before 1pm. Waves 1 ft or less.

Saturday Night

NNE wind 7 to 11 kt. Partly cloudy. Waves 1 ft or less.

Sunday

NNE wind 7 to 10 kt. Mostly sunny. Waves 1 ft or less.

*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.