Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

For More Weather Information:

Grand Rapids, MI Local Forecast Office

15NM S Pentwater MI

Marine Point Forecast

[NOTICE]

Today
High: 69 °F
ENE 8kt⇓
< 1ft
Tonight
Low: 51 °F
E 11kt
< 1ft
Saturday
High: 64 °F
E 13kt
< 1ft
Saturday Night
Low: 52 °F
E 9kt
< 1ft
Sunday
High: 67 °F
NE 11kt
< 1ft
Sunday Night
Low: 51 °F
ENE 11kt
< 1ft
Monday
High: 63 °F
ENE 12kt
< 1ft
Monday Night
Low: 48 °F
ENE 13kt
< 1ft
Tuesday
High: 64 °F
NE 13kt
< 1ft

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 CDT Sep 18, 2026
Forecast Valid: 9am CDT Sep 18, 2026-6pm CDT Sep 24, 2026

View Nearby Observations

Detailed Forecast

Today

ENE wind 5 to 8 kt becoming variable and less than 5 kt. Partly sunny. Waves 1 ft or less.

Tonight

NE wind 7 to 11 kt becoming E in the evening. Winds could gust as high as 19 kt. Showers. Waves 1 ft or less.

Saturday

E wind 11 to 13 kt, with gusts as high as 22 kt. Showers and thunderstorms before 1pm, then a chance of showers. Some of the storms could produce heavy rainfall. Waves 1 ft or less.

Saturday Night

E wind around 9 kt. A chance of showers. Waves 1 ft or less.

Sunday

NE wind around 11 kt, with gusts as high as 18 kt. A chance of showers, mainly before 1pm. Waves 1 ft or less.

Sunday Night

ENE wind 9 to 11 kt, with gusts as high as 19 kt. Mostly cloudy. Waves 1 ft or less.

Monday

ENE wind around 12 kt, with gusts as high as 21 kt. Mostly cloudy. Waves 1 ft or less.

Monday Night

ENE wind 11 to 13 kt, with gusts as high as 20 kt. Mostly cloudy. Waves 1 ft or less.

Tuesday

NE wind around 13 kt, with gusts as high as 20 kt. Partly sunny. 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.