Thunderstorm wind is the standout hazard at Acadia, with 7 recorded events logged for Hancock County — making sudden, gusty storms the primary weather threat families should plan around. These squalls can roll in quickly off the Atlantic, snapping branches and turning exposed ridgelines like Cadillac Mountain into genuinely dangerous places within minutes.
When a storm is building, get off open summits and rocky coastline immediately and move to low, tree-sheltered ground away from isolated tall trees. Before heading out, download the NWS forecast for Hancock County and set a weather alert on your phone specifically for thunderstorm warnings. In camp, stake down your tent with extra guylines and stow loose gear — chairs, cookware, tarps — inside your vehicle or a secured tote before afternoon, when Atlantic thunderstorms most commonly develop.
Top recorded hazards in Hancock County
County dataFrom NOAA Storm Events (2024). Counts of recorded incidents — not all occurred at this park.
- Thunderstorm Wind 7
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About Acadia National Park
Acadia National Park protects the natural beauty of the highest rocky headlands along the Atlantic coastline of the United States, an abundance of habitats, and a rich cultural heritage. At 4 million visits a year, it's one of the top 10 most-visited national parks in the United States. Visitors enjoy 27 miles of historic motor roads, 158 miles of hiking trails, and 45 miles of carriage roads.
Weather
Located on Mount Desert Island in Maine, Acadia experiences all four seasons. Summer temperatures range from 45-90F (7-30C). Fall temperatures range from 30-70F (-1-21C). Typically the first frost is in mid-October and first snowfall begins in November and can continue through April with an average accumulation of 73 inches (185 cm). Winter temperatures range from 14-35F (-10 - 2C). Spring temperatures range from 30-70F (-1-21C).