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21NM E Green Bay WI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 4:41 pm CDT Oct 4, 2026
Forecast Valid: 4pm CDT Oct 4, 2026-6pm CDT Oct 11, 2026

Tonight

NW wind 6 to 9 kt. Clear. Waves 1 ft or less.

Monday

NW wind 5 to 7 kt becoming variable and less than 5 kt in the afternoon. Sunny. Waves 1 ft or less.

Monday Night

Variable winds less than 5 kt becoming SSW 5 to 8 kt in the evening. Partly cloudy. Waves 1 ft or less.

Tuesday

SSW wind 11 to 17 kt, with gusts as high as 24 kt. Mostly sunny. Waves 1 ft or less.

Tuesday Night

SW wind 8 to 11 kt becoming W after midnight. Winds could gust as high as 18 kt. Mostly clear. Waves 1 ft or less.

Wednesday

WNW wind 7 to 11 kt. Sunny. Waves 1 ft or less.

Wednesday Night

WNW wind around 8 kt. Mostly clear. Waves 1 ft or less.

Thursday

WNW wind 7 to 9 kt. Sunny. Waves 1 ft or less.

Thursday Night

W wind around 6 kt. Partly cloudy. 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.