Heat Advisory

Locations Affected

Monomoscoy Island, MA ∙ East Dennis, MA ∙ Woods Hole, MA ∙ Popponesset Island, MA ∙ Harwich Center, MA ∙ Chatham Municipal Airport, MA ∙ Vineyard Haven Marthas Vineyard Airport, MA ∙ West Hyannisport, MA ∙ East Falmouth, MA ∙ Provincetown Municipal Airport, MA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Boston/Norton MA 125 PM EDT Tue Jun 30 2026 ...HEAT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 8 PM EDT SATURDAY... * WHAT...Heat index values up to 104 expected. * WHERE...Barnstable and Dukes Counties. * WHEN...From 10 AM Wednesday to 8 PM EDT Saturday. * 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.

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