Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. 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]

Today
High: 37 °F
Light Wind
< 1ft
Tonight
Low: 35 °F
SE 15kt
1-2ft
Friday
High: 45 °F
SSE 20kt
3-5ft
Friday Night
Low: 30 °F
SSE 20kt
4-6ft
Saturday
High: 33 °F
W 25kt
7ft
Saturday Night
Low: 26 °F
NW 25kt
7-8ft
Sunday
High: 32 °F
NW 20kt
7ft
Sunday Night
Low: 30 °F
NNW 15kt
2-3ft
Monday
High: 40 °F
SSE 10kt
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: 11:12 am CDT Apr 16, 2026
Forecast Valid: 11am CDT Apr 16, 2026-6pm CDT Apr 22, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds 5 kt or less. Areas of dense fog. Waves 1 ft or less.

Tonight

SE wind 10 to 15 kt. Areas of dense fog. Waves 1 to 2 ft.

Friday

SSE wind 15 to 20 kt, with gusts as high as 30 kt. A slight chance of showers after 1pm. Patchy fog before 10am. Waves 3 to 5 ft.

Friday Night

SSE wind around 20 kt becoming W after midnight. Winds could gust as high as 30 kt. Showers and possibly a thunderstorm. Waves 4 to 6 ft.

Saturday

W wind around 25 kt, with gusts as high as 35 kt. A slight chance of rain and snow showers before 10am, then a slight chance of snow showers between 10am and 1pm. Waves around 7 ft.

Saturday Night

NW wind around 25 kt, with gusts as high as 35 kt. Mostly cloudy. Waves 7 to 8 ft.

Sunday

NW wind 15 to 20 kt, with gusts as high as 30 kt. Partly sunny. Waves 7 ft subsiding to 4 ft.

Sunday Night

NNW wind 10 to 15 kt. Mostly clear. Waves 2 to 3 ft.

Monday

SSW wind around 10 kt becoming SE in the afternoon. Winds could gust as high as 15 kt. 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.