Heat Advisory

Locations Affected

Duluth, MN ∙ Walker, MN ∙ Spring Lake, MN ∙ Big Sandy Lake, MN ∙ Voyageurs National Park, MN ∙ Franklin, MN ∙ Proctor, MN ∙ Longville, MN ∙ Marcell, MN ∙ Nashwauk, MN

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Duluth MN 951 PM CDT Fri Jun 20 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON SATURDAY TO 9 PM CDT SUNDAY... * WHAT...Hot conditions with heat index values up to between 95 and 99 expected expected during the afternoon into early evening on both Saturday and Sunday. * WHERE...Northern Aitkin, Koochiching, North Cass, Itasca, Carlton, St. Louis, and Northern Cook and Lake Counties. This includes the Tribal Lands of the Fond du Lac Band, the Mille Lacs Band, Big Sandy Lake area and the Bois Forte Band, Deer Creek, Nett Lake and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From noon Saturday to 9 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

---