Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Hazardous Weather Conditions

For More Weather Information:

Marquette, MI Local Forecast Office

20NM W Ontonagon MI

Marine Point Forecast

[NOTICE]

Wednesday
High: 41 °F
Light Wind
< 1ft
Wednesday Night
Low: 36 °F
Light Wind
< 1ft
Thursday
High: 45 °F
Light Wind
< 1ft
Thursday Night
Low: 43 °F
E 10kt
< 1ft
Friday
High: 56 °F
SSE 10kt
< 1ft
Friday Night
Low: 32 °F
WNW 15kt
4ft
Saturday
High: 36 °F
W 20kt
4-5ft
Saturday Night
Low: 28 °F
NW 25kt
5-7ft
Sunday
High: 36 °F
NW 25kt⇓
7ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:12 am CDT Apr 15, 2026
Forecast Valid: 4am CDT Apr 15, 2026-6pm CDT Apr 21, 2026

View Nearby Observations

Detailed Forecast

Wednesday

Variable winds 5 kt or less. Areas of dense fog before 11am. Waves 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. Patchy fog after 10pm. Waves 1 ft or less.

Thursday

Variable winds 5 kt or less. Areas of fog before 8am. Waves 1 ft or less.

Thursday Night

E wind 5 to 10 kt becoming SSE in the evening. Partly cloudy. Waves 1 ft or less.

Friday

SSE wind around 10 kt. A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Waves 1 ft or less.

Friday Night

S wind 10 to 15 kt becoming WNW after midnight. Winds could gust as high as 20 kt. Rain showers before 4am, then a chance of rain and snow showers. Some thunder is also possible. Waves 1 ft or less building to 4 ft.

Saturday

W wind around 20 kt. A chance of rain and snow showers before 1pm, then a chance of snow showers. Waves 4 to 5 ft.

Saturday Night

NW wind 20 to 25 kt. A chance of snow showers. Waves 5 to 7 ft.

Sunday

NW wind 20 to 25 kt decreasing to 10 to 15 kt in the afternoon. Partly sunny. Waves 7 ft subsiding 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.