For More Weather Information:

Grand Rapids, MI Local Forecast Office

15NM SSW Pentwater MI

Marine Point Forecast

[NOTICE]

Saturday
High: 35 °F
S 7kt
< 1ft
Saturday Night
Low: 31 °F
SSE 10kt
< 1ft
Sunday
High: 37 °F
SSW 9kt
1ft
Sunday Night
Low: 32 °F
⇑S 12kt
< 1ft
Washington's Birthday
High: 42 °F
SSW 15kt
1-3ft
Monday Night
Low: 33 °F
SSW 10kt
1-3ft
Tuesday
High: 40 °F
E 14kt
1ft
Tuesday Night
Low: 35 °F
ESE 22kt
1-2ft
Wednesday
High: 41 °F
SE 22kt
3-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:03 am CST Feb 14, 2026
Forecast Valid: 1am CST Feb 14, 2026-6pm CST Feb 20, 2026

View Nearby Observations

Detailed Forecast

Saturday

E wind 5 to 7 kt becoming S in the afternoon. Partly sunny. Waves 1 ft or less.

Saturday Night

SSE wind 7 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

SSW wind 5 to 9 kt becoming N in the afternoon. Mostly sunny. Waves around 1 ft.

Sunday Night

Variable winds less than 5 kt becoming S 7 to 12 kt in the evening. Mostly cloudy. Waves 1 ft or less.

Washington's Birthday

SSW wind 11 to 15 kt. Partly sunny. Waves 1 to 3 ft.

Monday Night

SSW wind around 10 kt becoming ENE after midnight. Partly cloudy. Waves 1 to 3 ft.

Tuesday

E wind 9 to 14 kt. Mostly cloudy. Waves around 1 ft.

Tuesday Night

ESE wind 15 to 22 kt. Showers likely. Waves 1 to 2 ft.

Wednesday

SE wind 17 to 22 kt becoming SW in the afternoon. Rain and snow showers likely, mainly before noon. Waves 3 to 4 ft.

The Nearshore Marine Forecast has been suspended due to ice on Lake
Michigan and in the connecting river channels. The Nearshore Marine
Forecast will return when it is determined that navigation conditions
improve enough to warrant a return of the product.

*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.