Weather on December 18 at Acadia

Acadia National Park

MENortheast500 ft elevation
Avg High35°F
Avg Low20°F
Warmest202350°F
Coldest19797°F

Based on 53 years of data from Bar Harbor, ME

Planning Your Visit

December 18th in Acadia National Park (via Bar Harbor, ME) typically brings cold winter weather, with average highs around 35°F and lows near 20°F. Over 53 years of records, the warmest December 18th was in 2023 (50°F average), while the coldest was 1979 (7°F) — a 43°F range across recorded history. Precipitation has occurred on 28% of recorded December 18th dates, with snow falling 9% of the time (heaviest snowfall: 5"). The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.

The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.

Planning for December 18th in Acadia? Bundle up with warm layers and protect extremities from the cold.

Year by Year History

YearHighLowPrecipSnow
202546°F27°F----
202444°F33°F----
202354°F47°F----
202233°F29°F----
202133°F24°F----
202023°F10°F----
201927°F20°F----
201830°F17°F----
201730°F6°F----
201651°F25°F----
201551°F32°F----
201433°F28°F----
201324°F11°F0.58"--
201241°F35°F2.08"--
201126°F9°F0"--
201031°F11°F0"0"
200918°F5°F0"0"
200831°F17°F0.05"0"
200724°F9°F0"0"
200644°F39°F0"0"
200537°F24°F0"0"
200437°F9°F0"0"
200349°F32°F2.01"0"
200230°F17°F0"0"
200134°F26°F1.6"5"
200054°F34°F0.69"0"
199933°F28°F0"0"
199836°F24°F1.88"5"
199745°F22°F0"0"
199652°F39°F1.47"0"
199528°F12°F0"0"
199344°F22°F0"0"
199249°F34°F1.55"0"
199126°F8°F----
199043°F26°F0"0"
198925°F2°F0"0"
198828°F7°F0"0"
198728°F12°F0"0"
198634°F13°F0"0"
198529°F11°F0.23"2"
198450°F36°F0"0"
198334°F15°F0"0"
198131°F20°F0.36"0"
198031°F-1°F0.08"--
197915°F-1°F0"0"
197838°F17°F0"0"
197733°F19°F0"0"
197627°F17°F0.15"0.6"
197538°F19°F1.98"3"
197438°F30°F0"0"
197356°F18°F1.32"0"
197228°F4°F0"0"
197125°F12°F0"0"

December 18 at Nearby Parks

Holiday Weather at Acadia

Official NPS WebsiteVisit nps.gov/acad for park information, alerts, and reservations

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See historical weather for other dates

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December 18 Weather at Acadia National Park - Historical Data