Areas of Extreme Heat and Excessive Rainfall Potential

Dangerous and extreme heat will remain across portions of the central U.S. this week, persisting across the mid to lower Mississippi Valley, Gulf Coast, southern Plains and portions of Texas. A heat wave over the Southwest U.S. will peak this weekend. Heavy to excessive rainfall may produce flash flooding from the Delmarva Peninsula north into the Hudson Valley today and tonight. Read More >

Hazardous Weather Conditions

For More Weather Information:

Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]

Today
High: 65 °F
Light Wind
< 1ft
Tonight
Low: 50 °F
Light Wind
< 1ft
Wednesday
High: 66 °F
Light Wind
< 1ft
Wednesday Night
Low: 51 °F
Light Wind
< 1ft
Thursday
High: 70 °F
Light Wind
< 1ft
Thursday Night
Low: 54 °F
Light Wind
< 1ft
Friday
High: 72 °F
Light Wind
< 1ft
Friday Night
Low: 53 °F
Light Wind
< 1ft
Saturday
High: 68 °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: 7:41 am CDT Jul 28, 2026
Forecast Valid: 9am CDT Jul 28, 2026-6pm CDT Aug 3, 2026

View Nearby Observations

Detailed Forecast

Today

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

Tonight

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

Wednesday

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

Wednesday Night

Variable winds 5 kt or less. A slight chance of showers after 1am. Waves 1 ft or less.

Thursday

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

Thursday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. A slight chance of showers, with thunderstorms also possible after 1pm. Waves 1 ft or less.

Friday Night

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

Saturday

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.