Mt. Washington Average Weather by Day

Data and chart of the the average high and low temperature for every day of the year in Mt. Washington, New Hampshire, based on NOAA data.

Also see:

What's the hottest day of the year in Mt. Washington?

On average, July 21 is the hottest day of the year Mt. Washington, New Hampshire. From 1991–2020, the average high temperature on July 21 was 55.3 °F and the average low was 44.9 °F.

What's the coldest day of the year in Mt. Washington?

On average, January 31 is the coldest day of the year Mt. Washington, New Hampshire. From 1991–2020, the average high temperature on January 31 was 12.9 °F, and the average low was -4.0 °F.

Average Temperature by Day

Average temperatures from 1991–2020. Daily averages are a mean of the period from 14 days before to 14 days after, inclusive.

Day	Average (°F)
Day	High	Low
January 1	17.6	0.9
January 2	17.4	0.6
January 3	17.3	0.3
January 4	17.2	0.1
January 5	16.9	-0.2
January 6	16.6	-0.6
January 7	16.1	-1.1
January 8	15.7	-1.4
January 9	15.6	-1.5
January 10	15.6	-1.7
January 11	15.4	-2.0
January 12	15.0	-2.2
January 13	14.9	-2.4
January 14	14.7	-2.4
January 15	14.7	-2.3
January 16	14.6	-2.4
January 17	14.4	-2.5
January 18	14.3	-2.6
January 19	14.2	-2.8
January 20	14.1	-2.8
January 21	14.1	-2.7
January 22	14.1	-2.8
January 23	14.0	-2.9
January 24	14.0	-2.9
January 25	13.9	-3.1
January 26	13.7	-3.2
January 27	13.5	-3.4
January 28	13.2	-3.6
January 29	13.0	-3.8
January 30	12.9	-4.1
January 31	12.9	-4.0
February 1	12.9	-4.0
February 2	12.9	-3.9
February 3	13.0	-3.9
February 4	13.2	-3.8
February 5	13.5	-3.5
February 6	13.7	-3.3
February 7	13.8	-3.2
February 8	13.8	-3.0
February 9	14.1	-2.6
February 10	14.4	-2.4
February 11	14.5	-2.2
February 12	14.4	-2.2
February 13	14.5	-2.2
February 14	14.6	-2.1
February 15	14.8	-1.9
February 16	15.0	-1.8
February 17	15.0	-1.7
February 18	15.0	-1.8
February 19	15.0	-1.8
February 20	15.1	-1.6
February 21	15.3	-1.3
February 22	15.6	-1.0
February 23	15.9	-0.7
February 24	16.1	-0.4
February 25	16.4	-0.2
February 26	16.5	0.1
February 27	16.9	0.4
February 28	17.3	1.0
March 1	17.6	1.4
March 2	17.7	1.6
March 3	17.8	1.8
March 4	17.9	2.0
March 5	18.0	2.2
March 6	18.2	2.5
March 7	18.4	2.7
March 8	18.4	2.8
March 9	18.3	2.8
March 10	18.4	3.0
March 11	18.6	3.2
March 12	18.9	3.5
March 13	19.4	4.0
March 14	19.8	4.5
March 15	20.2	5.0
March 16	20.6	5.4
March 17	20.9	5.8
March 18	21.3	6.2
March 19	21.7	6.7
March 20	22.1	7.2
March 21	22.4	7.4
March 22	22.6	7.6
March 23	22.6	7.8
March 24	22.8	8.1
March 25	23.0	8.4
March 26	23.3	8.7
March 27	23.5	9.0
March 28	23.8	9.5
March 29	24.1	9.7
March 30	24.4	10.1
March 31	24.8	10.5
April 1	25.2	11.0
April 2	25.8	11.5
April 3	26.2	12.0
April 4	26.5	12.3
April 5	27.0	12.9
April 6	27.6	13.4
April 7	28.2	14.1
April 8	28.8	14.7
April 9	29.1	15.1
April 10	29.4	15.4
April 11	29.6	15.6
April 12	29.8	15.9
April 13	30.0	16.1
April 14	30.2	16.3
April 15	30.4	16.5
April 16	30.7	16.9
April 17	31.2	17.4
April 18	31.6	17.8
April 19	32.0	18.5
April 20	32.6	19.1
April 21	33.1	19.6
April 22	33.5	20.1
April 23	33.9	20.5
April 24	34.3	21.0
April 25	34.9	21.6
April 26	35.3	22.1
April 27	35.6	22.5
April 28	36.0	22.8
April 29	36.3	23.1
April 30	36.6	23.5
May 1	36.9	23.9
May 2	37.2	24.2
May 3	37.5	24.6
May 4	37.7	24.9
May 5	38.0	25.1
May 6	38.3	25.4
May 7	38.7	25.7
May 8	39.0	26.2
May 9	39.4	26.7
May 10	39.9	27.2
May 11	40.3	27.6
May 12	40.7	28.1
May 13	41.1	28.6
May 14	41.5	29.1
May 15	41.9	29.5
May 16	42.2	29.8
May 17	42.5	30.1
May 18	42.8	30.5
May 19	43.1	30.7
May 20	43.4	30.9
May 21	43.5	31.2
May 22	43.7	31.5
May 23	43.9	31.7
May 24	44.2	32.0
May 25	44.5	32.4
May 26	44.8	32.7
May 27	45.1	33.2
May 28	45.6	33.6
May 29	46.0	34.0
May 30	46.3	34.3
May 31	46.6	34.7
June 1	46.9	35.0
June 2	47.2	35.3
June 3	47.7	35.7
June 4	48.0	36.1
June 5	48.4	36.5
June 6	48.7	36.8
June 7	49.0	37.1
June 8	49.2	37.4
June 9	49.4	37.7
June 10	49.7	37.9
June 11	50.0	38.3
June 12	50.3	38.6
June 13	50.6	38.8
June 14	50.9	39.1
June 15	51.1	39.4
June 16	51.3	39.6
June 17	51.5	39.9
June 18	51.8	40.2
June 19	52.1	40.6
June 20	52.5	40.9
June 21	52.8	41.2
June 22	53.1	41.4
June 23	53.2	41.7
June 24	53.4	41.9
June 25	53.6	42.1
June 26	53.6	42.2
June 27	53.7	42.3
June 28	53.8	42.5
June 29	54.0	42.7
June 30	54.2	43.0
July 1	54.3	43.2
July 2	54.3	43.3
July 3	54.4	43.4
July 4	54.4	43.5
July 5	54.5	43.6
July 6	54.5	43.7
July 7	54.7	43.9
July 8	54.8	44.0
July 9	54.9	44.1
July 10	54.8	44.1
July 11	54.8	44.1
July 12	54.8	44.2
July 13	54.9	44.3
July 14	54.9	44.3
July 15	55.0	44.4
July 16	55.0	44.4
July 17	55.1	44.5
July 18	55.2	44.7
July 19	55.2	44.7
July 20	55.2	44.8
July 21	55.3	44.9
July 22	55.2	44.8
July 23	55.1	44.7
July 24	55.1	44.6
July 25	55.1	44.7
July 26	55.2	44.8
July 27	55.2	44.8
July 28	55.2	44.8
July 29	55.1	44.7
July 30	55.1	44.7
July 31	55.1	44.6
August 1	55.0	44.5
August 2	54.9	44.5
August 3	54.9	44.5
August 4	54.8	44.4
August 5	54.7	44.3
August 6	54.6	44.2
August 7	54.6	44.1
August 8	54.5	44.1
August 9	54.4	43.9
August 10	54.3	43.8
August 11	54.2	43.7
August 12	54.1	43.6
August 13	54.1	43.6
August 14	54.1	43.5
August 15	54.0	43.4
August 16	53.8	43.2
August 17	53.7	43.0
August 18	53.5	42.8
August 19	53.3	42.6
August 20	53.3	42.6
August 21	53.3	42.6
August 22	53.2	42.5
August 23	53.1	42.3
August 24	53.0	42.2
August 25	52.9	42.1
August 26	52.8	41.9
August 27	52.6	41.7
August 28	52.4	41.4
August 29	52.2	41.2
August 30	52.1	41.0
August 31	51.9	40.8
September 1	51.7	40.6
September 2	51.5	40.4
September 3	51.4	40.2
September 4	51.2	40.0
September 5	51.0	39.7
September 6	50.9	39.5
September 7	50.8	39.4
September 8	50.7	39.2
September 9	50.4	38.9
September 10	50.0	38.5
September 11	49.8	38.2
September 12	49.5	38.0
September 13	49.4	37.8
September 14	49.2	37.6
September 15	48.9	37.3
September 16	48.6	36.9
September 17	48.3	36.6
September 18	48.0	36.2
September 19	47.7	35.8
September 20	47.3	35.5
September 21	46.9	35.1
September 22	46.5	34.6
September 23	46.2	34.3
September 24	45.9	34.0
September 25	45.7	33.7
September 26	45.4	33.5
September 27	45.1	33.2
September 28	44.7	32.8
September 29	44.4	32.4
September 30	44.1	32.0
October 1	43.8	31.6
October 2	43.3	31.2
October 3	42.9	30.8
October 4	42.4	30.4
October 5	42.1	30.0
October 6	41.6	29.5
October 7	41.1	29.1
October 8	40.7	28.7
October 9	40.3	28.4
October 10	40.0	28.0
October 11	39.5	27.5
October 12	39.0	27.0
October 13	38.5	26.5
October 14	38.1	26.1
October 15	37.7	25.7
October 16	37.3	25.3
October 17	37.0	24.9
October 18	36.7	24.6
October 19	36.3	24.2
October 20	36.0	23.8
October 21	35.6	23.4
October 22	35.2	23.0
October 23	34.9	22.6
October 24	34.4	22.1
October 25	34.0	21.7
October 26	33.6	21.2
October 27	33.3	20.8
October 28	32.9	20.4
October 29	32.6	19.9
October 30	32.2	19.5
October 31	31.9	19.2
November 1	31.7	18.9
November 2	31.5	18.5
November 3	31.1	18.1
November 4	30.8	17.7
November 5	30.6	17.4
November 6	30.4	17.1
November 7	30.1	16.8
November 8	29.8	16.4
November 9	29.6	16.0
November 10	29.3	15.6
November 11	29.0	15.2
November 12	28.7	15.0
November 13	28.6	14.7
November 14	28.4	14.5
November 15	28.1	14.1
November 16	27.9	13.9
November 17	27.7	13.5
November 18	27.4	13.3
November 19	27.2	13.0
November 20	26.9	12.6
November 21	26.5	12.2
November 22	26.2	11.8
November 23	25.8	11.4
November 24	25.4	10.8
November 25	24.9	10.5
November 26	24.7	10.2
November 27	24.4	9.9
November 28	24.1	9.6
November 29	23.9	9.3
November 30	23.6	9.1
December 1	23.5	8.8
December 2	23.3	8.5
December 3	23.0	8.2
December 4	22.7	7.8
December 5	22.3	7.5
December 6	22.1	7.2
December 7	21.8	6.9
December 8	21.7	6.7
December 9	21.6	6.7
December 10	21.5	6.5
December 11	21.2	6.1
December 12	20.9	5.7
December 13	20.6	5.4
December 14	20.4	5.0
December 15	20.2	4.7
December 16	19.9	4.2
December 17	19.6	3.9
December 18	19.4	3.6
December 19	19.3	3.3
December 20	19.1	3.2
December 21	19.1	3.0
December 22	19.0	2.9
December 23	19.0	2.9
December 24	18.9	2.6
December 25	18.6	2.3
December 26	18.4	2.0
December 27	18.2	1.8
December 28	18.1	1.6
December 29	18.0	1.5
December 30	18.0	1.4
December 31	17.8	1.2

Weather Station Details

Years	Station	Coordinates
1948–2024	Mt. Washington	location