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Grand Rapids, MI Local Forecast Office

15NM SSW Pentwater MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 3 °F
NW 13kt
5ft
Saturday
High: 11 °F
⇑SSE 9kt
1-2ft
Saturday Night
Low: 8 °F
ESE 13kt
< 1ft
Sunday
High: 17 °F
NNE 14kt
< 1ft
Sunday Night
Low: 11 °F
NNW 18kt
4ft
Monday
High: 16 °F
WNW 21kt
5ft
Monday Night
Low: 12 °F
WSW 28kt
8ft
Tuesday
High: 19 °F
NW 27kt
6-8ft
Tuesday Night
Low: 13 °F
NW 22kt
4-6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 10:03 pm CST Jan 23, 2026
Forecast Valid: 10pm CST Jan 23, 2026-6pm CST Jan 30, 2026

View Nearby Observations

Detailed Forecast

Tonight

NW wind 8 to 13 kt. Snow showers likely, mainly before 3am. Waves 5 ft subsiding to 2 ft.

Saturday

Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. A chance of snow showers. Waves 1 to 2 ft.

Saturday Night

ESE wind 9 to 13 kt. A chance of snow showers, mainly after midnight. Waves 1 ft or less.

Sunday

E wind 10 to 14 kt becoming NNE in the afternoon. A chance of snow showers. Waves 1 ft or less.

Sunday Night

NNE wind 14 to 18 kt becoming NNW after midnight. A chance of snow showers. Widespread freezing spray after 3am. Waves 1 ft building to 4 ft.

Monday

NNW wind 19 to 21 kt becoming W in the afternoon. A chance of snow showers before noon. Widespread freezing spray. Waves around 5 ft.

Monday Night

WSW wind 22 to 28 kt. Widespread freezing spray before 1am. Mostly cloudy. Waves 5 ft building to 8 ft.

Tuesday

NW wind 22 to 27 kt. A chance of snow showers. Waves 6 to 8 ft.

Tuesday Night

NW wind 18 to 22 kt. Mostly cloudy. Waves 4 to 6 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.