For More Weather Information:

Grand Rapids, MI Local Forecast Office

15NM SSW Pentwater MI

Marine Point Forecast

[NOTICE]

Today
High: 42 °F
E 14kt
< 1ft
Tonight
Low: 38 °F
ESE 20kt
1-3ft
Wednesday
High: 44 °F
SSE 21kt
4-6ft
Wednesday Night
Low: 33 °F
SSW 14kt
2-4ft
Thursday
High: 44 °F
E 15kt
1ft
Thursday Night
Low: 34 °F
S 24kt
5ft
Friday
High: 38 °F
SSW 25kt
9ft
Friday Night
Low: 28 °F
WNW 24kt
7-9ft
Saturday
High: 32 °F
NW 19kt
5-7ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:03 am CST Feb 17, 2026
Forecast Valid: 9am CST Feb 17, 2026-6pm CST Feb 23, 2026

View Nearby Observations

Detailed Forecast

Today

E wind 10 to 14 kt. Mostly cloudy. Waves 1 ft or less.

Tonight

ESE wind 16 to 20 kt. Showers, with thunderstorms also possible after 3am. Waves 1 to 3 ft.

Wednesday

SSE wind 14 to 21 kt becoming SW in the morning. Showers likely and possibly a thunderstorm before 9am, then a chance of showers between 9am and noon. Waves 4 to 6 ft.

Wednesday Night

SSW wind 11 to 14 kt becoming SE after midnight. Partly cloudy. Waves 2 to 4 ft.

Thursday

E wind 12 to 15 kt. A slight chance of showers after noon. Waves around 1 ft.

Thursday Night

E wind 16 to 24 kt becoming S after midnight. Showers. Waves 1 ft building to 5 ft.

Friday

SSW wind around 25 kt becoming W in the afternoon. Rain and snow showers likely, mainly before noon. Waves 6 ft building to 9 ft.

Friday Night

WNW wind 19 to 24 kt. A chance of snow showers. Waves 7 to 9 ft.

Saturday

NW wind 16 to 19 kt. Mostly cloudy. Waves 5 to 7 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.