Station Name: 9099090 - Grand Marais, MN
Station Type: Fixed
Data Source: National Data Buoy Center

Elevation Above Sea Level: 617 feet

Nearest Address:
391 MN-61
Grand Marais, MN 55604
Cook County

GPS Coordinates: 47.749, -90.341

Nearby Water Temperatures

Dense Fog Advisory issued June 9 at 5:25PM CDT until June 10 at 7:00AM CDT by NWS Duluth MN

Effective: Tue June 9, 2026, 5:25 PM
Expires: Wed June 10, 2026, 5:30 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Grand Portage Reservation and the Fond du Lac Band. * WHEN...Until 7 AM CDT Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Mainly around Lake Superior.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.

Special Weather Statement issued June 9 at 2:44PM CDT by NWS Duluth MN

Effective: Tue June 9, 2026, 2:44 PM
Expires: Wed June 10, 2026, 7:00 AM

Severe thunderstorms are expected to affect the Boundary Waters Canoe Area Wilderness on Wednesday. Several rounds of storms are possible early Wednesday morning between 3 to 8 AM and another round Wednesday afternoon and evening after 2pm. The storms may produce damaging winds, large hail, tornadoes, frequent cloud- to- ground lightning, and locally heavy rainfall. Now is the time to prepare in case thunderstorms threaten. Campers should take extra precautions now in order to secure campsites and make a plan in case of severe weather. For strong winds, try to keep your tent away from large or decayed trees. For large hail, use your well-tied down canoe or tent for shelter. For lightning, sit on your personal floatation devices or sleeping pads and avoid putting your tent on top of exposed tree roots to minimize your risk. Monitor NOAA Weather Radio for updates and possible warnings.

Dense Fog Advisory issued June 10 at 12:56AM CDT until June 10 at 7:00AM CDT by NWS Duluth MN

Effective: Wed June 10, 2026, 12:56 AM
Expires: Wed June 10, 2026, 7:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis, Southern Cook and Southern Lake Counties. In Wisconsin, Ashland, Bayfield, Douglas, and Iron Counties. This includes the Tribal Lands of the Fond du Lac Band, the Grand Portage Reservation, the Red Cliff Band, the northwestern area of the Lac du Flambeau Band and the Bad River Reservation. Other locations including the Apostle Islands National Lakeshore and Madeline Island. * WHEN...Until 7 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Mainly around Lake Superior and near the Twin Ports.

If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.