Station Name: Western Lake Superior
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 587 feet

Nearest Address:
Offshore
Duluth, MN 55804
St. Louis County

GPS Coordinates: 46.814, -91.829

Nearby Water Temperatures

Frost Advisory issued May 19 at 9:10PM CDT until May 20 at 8:00AM CDT by NWS Duluth MN

Effective: Tue May 19, 2026, 9:10 PM
Expires: Wed May 20, 2026, 8:00 AM

* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...In Minnesota, Pine County. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Red Cliff Band, the St. Croix Band in Burnett County, the northwestern area of the Lac du Flambeau Band, the Lac Courte Oreilles Reservation, the Bad River Reservation and the Mille Lacs Band, Hinckley and, Lena Lake areas. Other locations including the Apostle Islands National Lakeshore and Madeline Island. * WHEN...From 3 AM to 8 AM CDT Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.

Freeze Warning issued May 19 at 9:10PM CDT until May 20 at 8:00AM CDT by NWS Duluth MN

Effective: Tue May 19, 2026, 9:10 PM
Expires: Wed May 20, 2026, 8:00 AM

* WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Crow Wing, Aitkin, Koochiching, Cass, Itasca, Carlton, St. Louis, Cook and Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation, the Fond du Lac Band, the Mille Lacs Band, Big Sandy Lake and, East Lake areas and the Bois Forte Band, Lake Vermilion, Deer Creek and, Nett Lake areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...Until 8 AM CDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.