Updated October 2026
Acadia National Park Weather by Month
Acadia National Park is warmest in July, when the nearest NOAA climate station averages a high of 79°F and a low of 60°F, and coldest in January, with an average high of 33°F and an average low of 15°F. October and November are the wettest months, with about 5.9 inches of precipitation each.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 2.5 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Acadia National Park can differ from these, particularly with elevation.
Warmest month
Jul
79°F avg high
Coldest month
Jan
15°F avg low
Longest days
Jun
15.3 h of daylight
Average weather at Acadia by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 33°F | 15°F | 4.5 in | 9.0 h |
| February | 35°F | 18°F | 3.8 in | 10.2 h |
| March | 42°F | 25°F | 4.9 in | 11.6 h |
| April | 53°F | 35°F | 5.2 in | 13.2 h |
| May | 65°F | 45°F | 4.5 in | 14.6 h |
| June | 74°F | 54°F | 4.3 in | 15.3 h |
| July | 79°F | 60°F | 3.3 in | 15.0 h |
| August | 78°F | 60°F | 3.5 in | 13.9 h |
| September | 71°F | 53°F | 4.2 in | 12.3 h |
| October | 59°F | 43°F | 5.9 in | 10.7 h |
| November | 48°F | 33°F | 5.9 in | 9.3 h |
| December | 38°F | 22°F | 5.7 in | 8.7 h |
| Year total | 55.7 in |
NOAA 1991–2020 climate normals from station USC00170100, 2.5 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Acadia is at that time of year.
Acadia weather by season
Winter: December to February
Average highs bottom out at 33°F in January, between 38°F in December and 35°F in February, with average lows between 15°F and 22°F. The average low is at or below freezing in all three months. Together the three months average 14 inches of precipitation, about 25% of the yearly total. Daylight is at its shortest, about 8.7 hours in December.
Spring: March to May
Average highs climb from 42°F in March to 65°F in May, with average lows between 25°F and 45°F. The average low is at or below freezing in March. Together the three months average 14.6 inches of precipitation, about 26% of the yearly total. Daylight lengthens from about 11.6 hours in March to 14.6 in May.
Summer: June to August
Average highs peak at 79°F in July, between 74°F in June and 78°F in August, with average lows between 54°F and 60°F. Together the three months average 11.1 inches of precipitation, about 20% of the yearly total and less than in any other season. Daylight is at its longest, about 15.3 hours in June.
Fall: September to November
Average highs fall from 71°F in September to 48°F in November, with average lows between 33°F and 53°F. Together the three months average 16 inches of precipitation, about 29% of the yearly total and more than in any other season. Daylight shortens from about 12.3 hours in September to 9.3 in November.
What the National Park Service says about the 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).
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Acadia
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 44.41°N, 68.25°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Acadia National Park →
Weather and crowds together
July, the warmest month, sees about 2.4× the visitors of the park's average month. August is the busiest month of the year and February the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Acadia National Park. For hotels, cabins and rentals close to the park, see where to stay near Acadia.
Where to stay near Acadia
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Top-rated places to stay near Acadia
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Frequently Asked Questions
July is the warmest month at Acadia National Park, with an average high of 79°F and an average low of 60°F. That is the 1991–2020 average at the nearest long-record NOAA station, 2.5 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Acadia National Park, with an average low of 15°F and an average high of 33°F, based on NOAA 1991–2020 climate normals.
October and November are the wettest months, with about 5.9 inches of precipitation each. July is the driest, at about 3.3 inches. The station records about 55.7 inches of precipitation in an average year.
Daylight at Acadia National Park runs from about 8.7 hours a day in December to about 15.3 hours in June, computed from the park's latitude.
Weather at nearby parks
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00170100), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.