Climateby Month

Bar Harbor, ME weather in December

NOAA 1991-2020 normals and daily records · Bar Harbor all year

Expect cold weather with frequent rain in Bar Harbor in December, with highs near 38°F and lows near 22°F. Rain falls on about 14 days.

Normal high
38°F
Normal low
22°F
Wet days
14
5.7 in total
Daylight
8.9 h

How December changes from start to finish

Normal values at the start and end of December
December 1December 31
Normal high43°F34°F
Normal low27°F18°F
Chance of a wet day43%42%
Sunrise / sunset6:48 am / 3:54 pm7:08 am / 4:02 pm
Daylight9.1 h8.9 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

What kind of days to expect

  • Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)0 of 31
  • Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)0 of 31
  • Hot dayshigh 90°F or more0 of 31
  • Wet daysat least 0.01 in of rain or melted snow14 of 31
  • Notable rainat least 0.10 in10 of 31
  • Freezing nightslow 32°F or below26 of 31

Average days per December, counted from daily records for each year 1991-2020.

Rain in December

Normal precipitation is 5.7 in; a dry December brings about 4.3 in and a wet one about 6.5 in (25th and 75th percentiles). About 4 days bring half an inch or more, and about 2 an inch or more.

How December varies from year to year

  • Warmest December, 1991-20202006: average high 43°F
  • Coolest December1995: average high 33°F
  • Highest reading59°F (December 4, 2009)
  • Lowest reading-13°F (December 29, 1993)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

December compared with November and January

NovemberDecemberJanuary
Normal high48°F38°F33°F
Normal low33°F22°F15°F
Wet days111412
Comfortable days100
Daylight9.6 h8.9 h9.3 h

Highs change by -10°F from November and -5°F into January.

Nearby alternatives in December

How Bar Harbor ranks in December

  • Normal high303rd warmest of 378 cities; 3rd of 5 in Maine
  • Wet days334th driest of 378

What to pack for Bar Harbor in December

  • A warm jacket – lows near 22°F, highs near 38°F
  • A rain jacket or umbrella – rain on about 14 days
  • A hat and gloves – about 26 freezing nights

Heating and cooling

December has 1082 heating degree days and 0 cooling degree days (base 65°F), 15% of the year's total heating and cooling demand.

Questions

How cold is Bar Harbor in December?

The normal high is 38°F and the normal low is 22°F. From 1991 to 2020 the coldest December reading was -13°F (December 29, 1993).

Does it rain a lot in Bar Harbor in December?

About 14 days in December have at least 0.01 in of precipitation, and the normal total is 5.7 in.

Is December a good time to visit Bar Harbor?

December ranks 11th of 12 months on our comfort score for Bar Harbor (25 out of 100). It has almost no comfortable days (judged by temperature only). The best months are June, August and September.

Where the numbers come from

  • Temperature, rain and frost dates: Acadia NP (USC00170100), 2.9 mi WSW of the city center, 470 ft (416 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Not available for this location: snowfall, snow depth, humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).