For More Weather Information:

Marquette, MI Local Forecast Office

21NM E Grand Portage MN

Marine Point Forecast

[NOTICE]

This Afternoon
High: 70 °F
Light Wind
< 1ft
Tonight
Low: 55 °F
N 10kt
< 1ft
Sunday
High: 72 °F
NNE 10kt
< 1ft
Sunday Night
Low: 53 °F
Light Wind
< 1ft
Monday
High: 70 °F
Light Wind
< 1ft
Monday Night
Low: 52 °F
Light Wind
< 1ft
Tuesday
High: 67 °F
Light Wind
< 1ft
Tuesday Night
Low: 52 °F
Light Wind
< 1ft
Wednesday
High: 70 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:55 pm CDT Jul 5, 2025
Forecast Valid: 2pm CDT Jul 5, 2025-6pm CDT Jul 11, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 4pm, then a chance of showers. Waves 1 ft or less.

Tonight

N wind 5 to 10 kt, with gusts as high as 20 kt. A slight chance of showers, mainly between 9pm and 10pm. Patchy fog between 8pm and 1am. Waves 1 ft or less.

Sunday

NNE wind 5 to 10 kt becoming E in the afternoon. Sunny. Waves 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Partly cloudy. 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. Showers likely, mainly after 1am. Waves 1 ft or less.

Tuesday

Variable winds 5 kt or less. A chance of showers before 1pm. Waves 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

Wednesday

Variable winds 5 kt or less. 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.