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

9NM SSW Pentwater MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 56 °F
NE 9kt
< 1ft
Sunday
High: 69 °F
NE 15kt
< 1ft
Sunday Night
Low: 52 °F
NE 15kt
< 1ft
Monday
High: 65 °F
ENE 11kt
< 1ft
Monday Night
Low: 49 °F
ENE 11kt
< 1ft
Tuesday
High: 65 °F
ENE 11kt
< 1ft
Tuesday Night
Low: 51 °F
ENE 10kt
< 1ft
Wednesday
High: 66 °F
ENE 11kt
< 1ft
Wednesday Night
Low: 51 °F
E 9kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:03 pm CDT Sep 19, 2026
Forecast Valid: 8pm CDT Sep 19, 2026-6pm CDT Sep 26, 2026

View Nearby Observations

Detailed Forecast

Tonight

E wind 7 to 9 kt becoming NE after midnight. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am. Waves 1 ft or less.

Sunday

NE wind 11 to 15 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 1 ft or less.

Sunday Night

NE wind 10 to 15 kt, with gusts as high as 24 kt. Partly cloudy. Waves 1 ft or less.

Monday

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

Monday Night

ENE wind 9 to 11 kt, with gusts as high as 18 kt. Mostly cloudy. Waves 1 ft or less.

Tuesday

ENE wind around 11 kt, with gusts as high as 19 kt. Partly sunny. Waves 1 ft or less.

Tuesday Night

ENE wind around 10 kt. Mostly cloudy. Waves 1 ft or less.

Wednesday

ENE wind 9 to 11 kt. A chance of showers. Waves 1 ft or less.

Wednesday Night

E wind around 9 kt. Mostly cloudy. 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.