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Marquette, MI Local Forecast Office

9NM WSW Isle Royale National Park MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 65 °F
Light Wind
< 1ft
Tonight
Low: 54 °F
W 10kt
< 1ft
Monday
High: 69 °F
Light Wind
< 1ft
Monday Night
Low: 60 °F
Light Wind
< 1ft
Tuesday
High: 69 °F
Light Wind
< 1ft
Tuesday Night
Low: 61 °F
Light Wind
< 1ft
Wednesday
High: 71 °F
NW 10kt
< 1ft
Wednesday Night
Low: 61 °F
NNW 15kt
1-2ft
Thursday
High: 70 °F
NNW 15kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:53 pm CDT Aug 23, 2026
Forecast Valid: 3pm CDT Aug 23, 2026-6pm CDT Aug 29, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Tonight

W wind 5 to 10 kt becoming NNW after midnight. Mostly clear. Waves 1 ft or less.

Monday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. Increasing clouds. Waves 1 ft or less.

Tuesday

Variable winds 5 kt or less. A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Waves 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Showers before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then showers after 10pm. Waves 1 ft or less.

Wednesday

ESE wind 5 to 10 kt becoming NW in the morning. A chance of showers. Waves 1 ft or less.

Wednesday Night

NNW wind 10 to 15 kt. Mostly cloudy. Waves 1 to 2 ft.

Thursday

NNW wind 5 to 15 kt. Mostly sunny. Waves 1 to 2 ft.

*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.