Acadia National Park weather in December
December in Acadia National Park: freezing, soaked, with clean air — a fair time to visit.
#11 of 12 months in Acadia National Park · #464 of 604 destinations to visit in December · comfort 52/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Acadia National Park climate normals — December
| Daytime high | 4°C / 38°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -2°C / 29°F | |
| Feels like (high) | -1°C / 30°F | |
| Rainfall | 151 mm / 5.9 in | ⛈ soaked |
| Rainy days | 12 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | -3°C / 27°F | |
| Sunshine | 4.8 h/day | |
| Daylight | 8.9 h | |
| Wind | 25 km/h / 15 mph | |
| Snowfall | 16.9 cm / 6.7 in | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Acadia National Park in December — FAQ
- Is December a good time to visit Acadia National Park?
- December in Acadia National Park: freezing, soaked, with clean air — a fair time to visit. It ranks #11 of 12 months for Acadia National Park on SeasonMap's comfort score (52/100).
- What is the weather like in Acadia National Park in December?
- In December, Acadia National Park averages a daily high of 3.6°C and a low of -1.8°C, with about 150.6 mm of rain over roughly 11.8 rainy days.
- What is the air quality in Acadia National Park in December?
- Acadia National Park has a mean US Air Quality Index of about 33 in December.
- Does it snow in Acadia National Park in December?
- Acadia National Park sees roughly 16.9 cm of snowfall in December.