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Marquette, MI Local Forecast Office

3NM SE Isle Royale National Park MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 69 °F
SSW 15kt
2ft
Tonight
Low: 58 °F
SSW 15kt
1-2ft
Saturday
High: 66 °F
WNW 15kt
1-2ft
Saturday Night
Low: 52 °F
WNW 15kt
< 1ft
Sunday
High: 60 °F
WNW 15kt
< 1ft
Sunday Night
Low: 53 °F
WNW 10kt
< 1ft
Monday
High: 61 °F
SE 15kt
3ft
Monday Night
Low: 54 °F
S 20kt
4-6ft
Tuesday
High: 62 °F
W 20kt
1-3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:17 pm CDT Sep 11, 2026
Forecast Valid: 3pm CDT Sep 11, 2026-6pm CDT Sep 17, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind 10 to 15 kt. Mostly cloudy. Waves around 2 ft.

Tonight

SSW wind 10 to 15 kt, with gusts as high as 20 kt. Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers after 4am. Waves 1 to 2 ft.

Saturday

WSW wind 10 to 15 kt becoming WNW in the morning. Winds could gust as high as 20 kt. A chance of showers, mainly before 7am. Waves 1 to 2 ft.

Saturday Night

WNW wind around 15 kt, with gusts as high as 20 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

WNW wind around 15 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

WNW wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.

Monday

W wind 5 to 15 kt becoming SE in the afternoon. A chance of showers after 1pm. Waves 1 ft or less building to 3 ft.

Monday Night

SSE wind 15 to 20 kt becoming SW after midnight. Showers. Waves 4 to 6 ft.

Tuesday

W wind 15 to 20 kt. Mostly sunny. Waves 1 to 3 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.