Acadia National Park - Climate

Acadia National Park by National Parks Service

Acadia's weather is largely a product of latitude and marine influences. On a daily and annual basis, Mount Desert Island temperatures are more moderate than those of inland Maine. The Maine coastal climate has been ranked second only to the Pacific Northwest in annual precipitation. This moisture occurs in every form at Acadia. Ice storms are regular in winter and early spring, and rain is frequent in every month. Fog is common during June, July and August.

Spring:

can be foggy with temperatures ranging between 30 and 70 degrees. Blackflies are common in late May and June. Mosquitoes can also be bothersome. Wear light-colored clothing, long sleeve shirts and long pants for protection. Annual rainfall is 48 inches.

Summer:

daytime temperatures range from 45 to 90 degrees. Evenings are cooler. Dressing in layers is advisable for any boating or hiking activities. Ocean water temperatures range from 50 to 60 degrees. Lake water temperatures range from 55 to 70 degrees.

Fall:

temperatures can range from low 70s during the day to freezing during the night. Come prepared for all types of weather, from sun to fog, from downpours to flurries. Fall foliage often peaks during the first couple of weeks in October. Weather conditions over the summer, such as drought, may alter the time that the leaves peak. Visit Maine Publicity Bureau for state fall foliage information.

Winter:

Due to Acadia's coastal location, snow and weather conditions change rapidly. Temperatures vary from mid-30s to below zero. The park averages 61 of snow annually. For the latest in weather information, call the local weather phone line at (207)667-8910, or check the Current Weather Conditions, or call the park at (207)288-3338.