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Grand Rapids, MI Local Forecast Office

15NM SSW Pentwater MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: -1 °C
NW 10km/h
< 1m
Tonight
Low: -4 °C
⇑S 18km/h
< 1m
Friday
High: 3 °C
SSW 27km/h
< 1m
Friday Night
Low: -3 °C
SW 23km/h⇓
< 1m
Saturday
High: 2 °C
S 13km/h
< 1m
Saturday Night
Low: 0 °C
S 21km/h
< 1m
Sunday
High: 3 °C
SSW 18km/h
< 1m
Sunday Night
Low: -1 °C
S 21km/h
< 1m
Washington's Birthday
High: 4 °C
S 26km/h
< 1m

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:03 pm CST Feb 12, 2026
Forecast Valid: 2pm CST Feb 12, 2026-6pm CST Feb 18, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

NW wind 8 to 10 km/h. Mostly sunny. Waves 1 m or less.

Tonight

ENE wind 5 to 10 km/h becoming S 13 to 18 km/h after midnight. Partly cloudy. Waves 1 m or less.

Friday

SSW wind 23 to 27 km/h, with gusts as high as 34 km/h. Mostly sunny. Waves 1 m or less.

Friday Night

SW wind 18 to 23 km/h becoming E 10 to 15 km/h after midnight. Mostly clear. Waves 1 m or less.

Saturday

E wind 10 to 13 km/h becoming S in the morning. Mostly sunny. Waves 1 m or less.

Saturday Night

S wind 14 to 21 km/h. Mostly cloudy. Waves 1 m or less.

Sunday

SSW wind 13 to 18 km/h becoming N in the afternoon. Mostly sunny. Waves 1 m or less.

Sunday Night

N wind 13 to 21 km/h becoming S after midnight. Mostly cloudy. Waves 1 m or less.

Washington's Birthday

S wind 21 to 26 km/h. Mostly cloudy. Waves 1 m or less.

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.