Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

Marquette, MI Local Forecast Office

8NM E Copper Harbor MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 37 °F
Light Wind
1ft
Tonight
Low: 34 °F
E 10kt
< 1ft
Tuesday
High: 36 °F
ENE 10kt
1-2ft
Tuesday Night
Low: 34 °F
Light Wind
< 1ft
Wednesday
High: 37 °F
Light Wind
< 1ft
Wednesday Night
Low: 35 °F
Light Wind
< 1ft
Thursday
High: 39 °F
N 10kt
1ft
Thursday Night
Low: 35 °F
E 15kt
1-3ft
Friday
High: 44 °F
ESE 20kt
4-5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:17 pm CDT Apr 13, 2026
Forecast Valid: 4pm CDT Apr 13, 2026-6pm CDT Apr 19, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Partly sunny. Waves around 1 ft.

Tonight

E wind 5 to 10 kt. A chance of showers after 10pm. Patchy fog after 11pm. Waves 1 ft or less.

Tuesday

ENE wind 5 to 10 kt. A slight chance of showers before 8am, then a slight chance of showers after 2pm. Patchy fog. Waves 1 to 2 ft.

Tuesday Night

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

Wednesday

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

Wednesday Night

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

Thursday

ENE wind 5 to 10 kt becoming NNW in the afternoon. A chance of showers before 1pm. Waves around 1 ft.

Thursday Night

N wind 5 to 15 kt becoming E after midnight. Mostly cloudy. Waves 1 to 3 ft.

Friday

ESE wind 15 to 20 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 4 to 5 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.