Mt. Washington Weather Records

Mt. Washington, New Hampshire weather averages and records from 1948–2024 based on data made available by the NOAA.

All-Time Recorded High

The highest temperature ever recorded in Mt. Washington, New Hampshire was 72 °F which occurred on June 26, 2003.

Highest Temperatures: All-Time By Year

All-Time Recorded Low

The lowest temperature ever recorded in Mt. Washington, New Hampshire was -47 °F which occurred on February 4, 2023.

Lowest Temperatures: All-Time By Year

Mt. Washington Weather by Month

Averages based on the years 1991–2020

Month	Average (°F)		Record (°F)		Average (inches)
Month	High ☀️	Low 🌙	High ☀️	Low 🌙	Precipitation 💧	Snow ❄️
January	14.6	-2.4	48	-46	5.7	40.2
February	14.7	-2.4	48	-47	5.4	43.3
March	20.7	5.5	55	-38	6.7	46.4
April	30.6	16.6	60	-20	7.3	32.8
May	42.3	29.9	66	-2	7.7	13.1
June	51.1	39.5	72	13	8.6	1.2
July	55.0	44.4	71	24	8.9	0.0
August	53.9	43.2	72	20	7.7	0.1
September	48.7	37.0	69	9	7.7	1.2
October	37.4	25.3	62	-2	10.0	19.2
November	28.0	13.9	52	-26	8.1	34.6
December	20.0	4.4	47	-41	7.4	47.6
Entire year	34.9	21.4	72	-47	91.3	279.8

More Mt. Washington Weather Records 1948–2024
Highest daily low	60 °F	July 2, 2018
Lowest daily high	-28 °F	February 6, 1995
Greatest daily range (Difference of high and low)	61 °F	March 3, 1950
Greatest difference in daily high over two conscutive days	49 °F	Jan 9–10, 1978
Most daily precipitation	10.8 inches	October 21, 1996
Most monthly precipitation	28.7 inches	October 2005
Most yearly precipitation	121.6 inches	1972
Most yearly days with precipitation	266	1954
Earliest snow in season	July 1	2010
Latest snow in season	June 30	1988
Most daily snow	49.3 inches	February 25, 1969
Most monthly snow	172.8 inches	February 1969
Most yearly snow	495.2 inches	1969
Most snow in a winter	566.4 inches	1968–1969
Greatest snow accumulation	42.0 inches	March 16, 1970
Earliest freeze	August 1	1953
Latest freeze	July 31	1964
Most days in a year < 0 °F	87	1976
Most days in a year < 32 °F	260	1988

Mt. Washington Weather Streaks Most consecutive days...
With precipitation	24 days	Dec 22, 1996 – Jan 14, 1997
Without precipitation	14 days	Apr 28 – May 11, 2001
With snow	24 days	Nov 7–30, 1968
High temperature at or below freezing	110 days	Dec 5, 1962 – Mar 24, 1963

Plant Hardiness Zone

Mt. Washington is in plant hardiness zone 3B

based on average yearly minimum temperature from 1991–2020

Facts About Mt. Washington Weather

Mt. Washington appears at #4 on our list of Snowiest Places in the United States

Mt. Washington Weather by Year

More Mt. Washington Weather

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Weather Station Details

Years	Station	Coordinates
1948–2024	Mt. Washington	location