Mt. Washington December Weather

Averages and records for weather in Mt. Washington, New Hampshire in the month of December.
Typical Mt. Washington December Weather
1991–2020
Average daily high 20.0 °F
Average daily low 4.4 °F
Average monthly precipitation 7.4 inches
Average monthly snow 47.6 inches
Daily chance of precipitation 68.1%
Daily chance of snow 64.2%
Mt. Washington December Weather Records
1948–2024
Highest temperature 47 °F December 6, 2001
Lowest temperature -41 °F December 30, 1962
Highest daily low 41 °F December 9, 1966
Lowest daily high -24 °F December 11, 1977
Hottest average high temperature 31.7 °F 2015
Coldest average high temperature 3.1 °F 1989
Most daily precipitation 6.1 inches December 15, 1968
Most monthly precipitation 18.0 inches 1973
Most daily snow 37.5 inches December 15, 1968
Most monthly snow 103.7 inches 1968
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
December 1 23.5 8.8 43 -18
December 2 23.3 8.5 41 -17
December 3 23.0 8.2 44 -33
December 4 22.7 7.8 45 -21
December 5 22.3 7.5 42 -21
December 6 22.1 7.2 47 -13
December 7 21.8 6.9 45 -21
December 8 21.7 6.7 42 -25
December 9 21.6 6.7 44 -30
December 10 21.5 6.5 44 -26
December 11 21.2 6.1 43 -30
December 12 20.9 5.7 45 -30
December 13 20.6 5.4 41 -33
December 14 20.4 5.0 42 -30
December 15 20.2 4.7 43 -32
December 16 19.9 4.2 45 -35
December 17 19.6 3.9 43 -25
December 18 19.4 3.6 40 -29
December 19 19.3 3.3 38 -32
December 20 19.1 3.2 39 -36
December 21 19.1 3.0 44 -29
December 22 19.0 2.9 45 -29
December 23 19.0 2.9 45 -24
December 24 18.9 2.6 46 -33
December 25 18.6 2.3 44 -39
December 26 18.4 2.0 42 -36
December 27 18.2 1.8 42 -36
December 28 18.1 1.6 42 -34
December 29 18.0 1.5 41 -28
December 30 18.0 1.4 42 -41
December 31 17.8 1.2 39 -40
Weather Station Details
Years Station Coordinates
1948–2024 Mt. Washington location