Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Hazardous Weather Conditions

For More Weather Information:

Marquette, MI Local Forecast Office

3NM N Copper Harbor MI

Marine Point Forecast

[NOTICE]

Overnight
Low: 11 °F
W 20kt
4-6ft

Small Craft Advisory
Wednesday
High: 20 °F
WSW 15kt
2-3ft
Wednesday Night
Low: 7 °F
WNW 25kt
7ft
Thursday
High: 9 °F
WNW 25kt
6-7ft
Thursday Night
Low: -6 °F
NW 25kt
6-8ft
Friday
High: 1 °F
NW 25kt
8ft
Friday Night
Low: -3 °F
NW 20kt
3-5ft
Saturday
High: 7 °F
WNW 15kt
2-3ft
Saturday Night
Low: 0 °F
W 10kt
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:13 pm CST Jan 20, 2026
Forecast Valid: 11pm CST Jan 20, 2026-6pm CST Jan 27, 2026

View Nearby Observations

Detailed Forecast

Overnight

W wind 10 to 20 kt. Snow showers, mainly before 3am. Widespread freezing spray before 2am. Waves 4 to 6 ft.

Wednesday

WSW wind 10 to 15 kt. Snow showers likely, mainly after 2pm. Waves 2 to 3 ft.

Wednesday Night

WNW wind 15 to 25 kt. Snow showers likely. Widespread freezing spray after 9pm. Waves 2 ft building to 7 ft.

Thursday

WNW wind 20 to 25 kt. Snow showers likely. Widespread freezing spray. Waves 6 to 7 ft.

Thursday Night

NW wind 20 to 25 kt, with gusts as high as 35 kt. Snow showers likely. Widespread freezing spray. Waves 6 to 8 ft.

Friday

NW wind 20 to 25 kt, with gusts as high as 30 kt. Snow showers likely, mainly before noon. Widespread freezing spray. Waves 8 ft subsiding to 5 ft.

Friday Night

NW wind 15 to 20 kt, with gusts as high as 25 kt. Widespread freezing spray before midnight. Mostly cloudy. Waves 3 to 5 ft.

Saturday

WNW wind 10 to 15 kt becoming WSW in the afternoon. Winds could gust as high as 20 kt. Partly sunny. Waves 2 to 3 ft.

Saturday Night

W wind around 10 kt, with gusts as high as 15 kt. Mostly cloudy. Waves around 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.