Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 63 °F
Light Wind
< 1ft
Tonight
Low: 54 °F
Light Wind
< 1ft
Saturday
High: 66 °F
NE 10kt
< 1ft
Saturday Night
Low: 52 °F
Light Wind
< 1ft
Sunday
High: 63 °F
E 10kt
< 1ft
Sunday Night
Low: 49 °F
Light Wind
< 1ft
Monday
High: 65 °F
Light Wind
< 1ft
Monday Night
Low: 51 °F
Light Wind
< 1ft
Tuesday
High: 66 °F
SW 10kt
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:21 pm CDT Jul 31, 2026
Forecast Valid: 4pm CDT Jul 31, 2026-6pm CDT Aug 7, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

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

Tonight

Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 7pm. Waves 1 ft or less.

Saturday

NNE wind 5 to 10 kt becoming ENE in the afternoon. A chance of showers, mainly before 3pm. Waves 1 ft or less.

Saturday Night

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

Sunday

NNE wind 5 to 10 kt becoming E in the afternoon. Sunny. Waves 1 ft or less.

Sunday Night

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

Monday

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

Monday Night

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

Tuesday

SW wind 5 to 10 kt. A slight chance of showers. Waves around 1 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.