Juneau Weather in 2021

Historical record of Juneau, Alaska weather for the year 2021 based on NOAA data.

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2021 Juneau Weather Extremes
Highest temperature	83 °F	June 28
Lowest temperature	-5 °F	February 10
Highest daily low	57 °F	August 5
Lowest daily high	7 °F	February 9
Most daily precipitation	2.0 inches	January 18
Most daily snow	7.1 inches	December 21
Total annual precipitation	76.5 inches	-
Total annual snow	137.0 inches	-

What was the hottest temperature in Juneau in 2021?

The highest temperature recorded in Juneau, Alaska in 2021 was 83 °F which happened on June 28.

Highest Temperatures: All-Time By Year

Highest Temperatures in Juneau in 2021

Rank	Temperature	Date
1	83 °F	Jun 28
2	81 °F	Jul 31
3	80 °F	Jun 27
4	77 °F	Aug 1
4	77 °F	Jul 20
6	75 °F	Jul 30
6	75 °F	Jun 29
8	74 °F	Jul 29
8	74 °F	Jul 5
10	73 °F	Jul 17
10	73 °F	Jul 16
10	73 °F	Jun 19

What was the coldest temperature in Juneau in 2021?

The lowest temperature recorded in Juneau, Alaska in 2021 was -5 °F which happened on Feb 10.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Juneau in 2021

Rank	Temperature	Date
1	-5 °F	February 10
2	0 °F	December 26
3	1 °F	December 25
3	1 °F	February 9
5	4 °F	February 8
6	5 °F	December 22
7	6 °F	December 30
7	6 °F	December 15
7	6 °F	December 14
7	6 °F	February 7

January 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	36	30	0.00	0.0
January 2	33	28	0.12	2.0
January 3	37	29	0.34	3.3
January 4	40	28	0.08	0.0
January 5	42	36	0.25	0.0
January 6	41	37	0.22	0.0
January 7	44	39	0.11	0.0
January 8	46	36	0.24	0.0
January 9	43	36	0.03	0.0
January 10	43	39	0.68	0.0
January 11	42	37	0.15	0.0
January 12	41	35	0.61	0.0
January 13	39	36	0.02	0.0
January 14	42	36	0.24	0.0
January 15	43	40	0.31	0.0
January 16	46	40	0.28	0.0
January 17	44	39	0.21	0.0
January 18	43	37	1.95	0.0
January 19	39	36	0.08	0.0
January 20	38	32	0.01	0.0
January 21	36	27	0.00	0.0
January 22	33	27	0.01	0.2
January 23	34	32	0.17	2.5
January 24	34	33	0.09	0.3
January 25	33	25	0.00	0.0
January 26	29	18	0.00	0.0
January 27	23	10	0.00	0.0
January 28	23	9	0.00	0.0
January 29	29	21	0.00	0.0
January 30	32	19	0.01	0.3
January 31	30	14	0.00	0.0

February 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	24	14	0.37	5.9
February 2	23	8	0.00	0.0
February 3	27	16	0.40	5.7
February 4	32	25	0.02	0.1
February 5	30	17	0.01	0.0
February 6	27	9	0.01	0.1
February 7	25	6	0.00	0.0
February 8	22	4	0.00	0.0
February 9	7	1	0.00	0.0
February 10	23	-5	0.00	0.0
February 11	29	20	0.00	0.0
February 12	35	23	0.00	0.0
February 13	34	20	0.00	0.0
February 14	27	8	0.00	0.0
February 15	31	13	0.00	0.0
February 16	31	10	0.07	0.7
February 17	36	30	0.20	0.3
February 18	40	28	0.16	0.0
February 19	40	31	0.63	3.7
February 20	38	29	0.82	0.6
February 21	41	34	0.39	0.0
February 22	38	34	0.18	0.0
February 23	37	33	0.02	0.0
February 24	35	33	0.14	1.3
February 25	34	32	0.34	2.2
February 26	38	25	0.03	0.0
February 27	36	33	0.90	0.5
February 28	40	34	0.55	0.0

March 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	38	34	0.26	0.1
March 2	39	34	0.16	0.0
March 3	41	33	0.02	0.0
March 4	43	33	0.09	0.3
March 5	42	31	0.21	0.0
March 6	44	29	0.14	0.0
March 7	44	30	0.00	0.0
March 8	38	23	0.00	0.0
March 9	37	18	0.00	0.0
March 10	36	19	0.21	1.9
March 11	37	29	0.18	0.2
March 12	34	22	0.07	1.5
March 13	29	22	0.00	0.0
March 14	29	19	0.00	0.0
March 15	36	27	0.69	5.1
March 16	38	33	0.31	2.1
March 17	40	33	0.63	5.0
March 18	41	26	0.01	0.2
March 19	36	25	0.25	4.4
March 20	34	21	0.05	1.1
March 21	35	30	0.30	4.0
March 22	34	31	0.30	2.7
March 23	37	31	0.68	1.9
March 24	38	28	0.09	0.5
March 25	37	26	0.03	0.0
March 26	40	35	0.07	0.0
March 27	38	33	0.39	0.5
March 28	39	22	0.02	0.4
March 29	35	21	0.02	1.7
March 30	39	35	0.37	0.0
March 31	38	34	0.83	0.0

April 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	40	33	0.15	1.4
April 2	42	28	0.00	0.0
April 3	42	28	0.00	0.0
April 4	40	35	0.00	0.0
April 5	42	34	0.19	0.0
April 6	39	32	0.43	1.0
April 7	36	23	0.01	0.6
April 8	37	24	0.37	0.9
April 9	37	29	0.46	5.8
April 10	29	26	0.03	0.6
April 11	36	21	0.00	0.0
April 12	36	34	0.51	0.0
April 13	42	34	0.64	0.0
April 14	47	38	0.33	0.0
April 15	49	33	0.00	0.0
April 16	58	32	0.00	0.0
April 17	70	31	0.00	0.0
April 18	68	34	0.00	0.0
April 19	65	29	0.00	0.0
April 20	57	36	0.03	0.0
April 21	56	29	0.00	0.0
April 22	58	25	0.00	0.0
April 23	61	27	0.00	0.0
April 24	62	30	0.00	0.0
April 25	63	29	0.00	0.0
April 26	62	30	0.00	0.0
April 27	49	37	0.16	0.0
April 28	45	37	0.27	0.0
April 29	46	41	0.81	0.0
April 30	45	43	0.76	0.0

May 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	53	37	0.02
May 2	54	33	0.00
May 3	49	40	0.08
May 4	47	42	0.57
May 5	55	39	0.00
May 6	59	42	0.01
May 7	50	45	0.34
May 8	51	45	0.05
May 9	50	42	0.36
May 10	54	40	0.08
May 11	51	44	0.38
May 12	53	43	0.02
May 13	47	43	0.32
May 14	48	42	0.36
May 15	51	40	0.40
May 16	48	38	0.04
May 17	55	36	0.00
May 18	63	33	0.00
May 19	61	35	0.00
May 20	63	41	0.00
May 21	52	48	0.40
May 22	49	44	0.73
May 23	56	41	0.22
May 24	58	42	0.10
May 25	62	41	0.04
May 26	52	45	0.13
May 27	55	46	0.01
May 28	50	46	0.23
May 29	54	46	0.12
May 30	52	47	0.42
May 31	56	48	1.48

June 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	64	51	0.13
June 2	53	50	1.28
June 3	51	46	0.32
June 4	56	45	0.09
June 5	54	47	0.29
June 6	58	43	0.29
June 7	66	39	0.00
June 8	70	47	0.00
June 9	70	43	0.01
June 10	55	50	0.01
June 11	59	50	0.01
June 12	63	49	0.03
June 13	68	46	0.00
June 14	71	49	0.00
June 15	59	52	1.46
June 16	62	46	0.72
June 17	71	43	0.00
June 18	59	49	0.06
June 19	73	43	0.00
June 20	62	49	0.52
June 21	57	51	0.15
June 22	63	50	0.00
June 23	65	50	0.40
June 24	59	54	0.39
June 25	60	54	0.17
June 26	70	54	0.05
June 27	80	51	0.00
June 28	83	51	0.00
June 29	75	51	0.00
June 30	63	54	0.00

July 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	64	54	0.00
July 2	64	51	0.00
July 3	65	49	0.00
July 4	68	53	0.00
July 5	74	46	0.00
July 6	69	51	0.00
July 7	68	52	0.03
July 8	59	53	0.09
July 9	63	54	0.09
July 10	57	50	0.01
July 11	61	50	0.02
July 12	58	53	0.79
July 13	59	53	0.60
July 14	59	51	0.27
July 15	67	50	0.00
July 16	73	52	0.01
July 17	73	49	0.00
July 18	62	54	0.11
July 19	72	50	0.00
July 20	77	53	0.00
July 21	62	55	0.01
July 22	60	53	0.04
July 23	58	53	0.06
July 24	61	52	0.20
July 25	65	51	0.22
July 26	68	51	0.00
July 27	65	53	0.00
July 28	70	50	0.00
July 29	74	45	0.00
July 30	75	55	0.00
July 31	81	51	0.00

August 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	77	56	0.00
August 2	69	57	0.00
August 3	68	51	0.00
August 4	65	56	0.17
August 5	69	57	0.22
August 6	60	56	0.58
August 7	67	54	0.04
August 8	62	55	0.82
August 9	60	53	0.10
August 10	60	53	0.22
August 11	56	53	0.35
August 12	63	55	0.36
August 13	64	54	1.56
August 14	62	51	0.81
August 15	57	49	0.07
August 16	62	51	0.00
August 17	55	51	0.53
August 18	56	52	0.46
August 19	62	50	0.00
August 20	62	46	0.01
August 21	64	46	0.00
August 22	70	40	0.00
August 23	71	42	0.00
August 24	59	53	0.11
August 25	61	54	0.04
August 26	61	52	0.12
August 27	59	53	0.41
August 28	56	51	1.41
August 29	53	50	0.21
August 30	64	47	0.02
August 31	67	46	0.00

September 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	70	44	0.01
September 2	57	54	1.04
September 3	58	52	0.77
September 4	58	52	0.15
September 5	57	52	0.73
September 6	59	49	0.21
September 7	57	46	0.30
September 8	57	51	0.21
September 9	61	51	0.19
September 10	58	52	0.63
September 11	55	51	0.79
September 12	58	51	0.18
September 13	55	48	0.28
September 14	50	45	0.20
September 15	56	48	0.38
September 16	50	45	0.27
September 17	53	44	0.01
September 18	62	37	0.00
September 19	56	40	0.09
September 20	55	50	0.68
September 21	54	44	0.84
September 22	48	43	0.06
September 23	53	45	0.33
September 24	59	44	0.78
September 25	52	40	0.01
September 26	53	38	0.00
September 27	49	44	0.42
September 28	52	34	0.00
September 29	51	34	0.11
September 30	50	43	0.28

October 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	49	45	1.90
October 2	50	40	0.82
October 3	45	39	0.10
October 4	47	30	0.00
October 5	49	28	0.00
October 6	47	27	0.01
October 7	45	41	1.16
October 8	46	41	0.76
October 9	47	43	0.15
October 10	48	40	0.14
October 11	46	41	1.18
October 12	46	42	0.44
October 13	47	44	0.71
October 14	47	41	0.37
October 15	46	39	0.32
October 16	46	29	0.00
October 17	43	26	0.00
October 18	43	30	0.00
October 19	49	37	0.00
October 20	52	39	0.05
October 21	48	36	0.06
October 22	50	40	0.34
October 23	49	40	0.20
October 24	48	29	0.00
October 25	40	28	0.06
October 26	45	38	0.16
October 27	47	39	0.55
October 28	43	38	0.02
October 29	43	39	0.15
October 30	47	32	0.02
October 31	37	29	0.00

November 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	44	28	0.00	0.0
November 2	50	32	0.02	0.0
November 3	46	33	0.25	0.0
November 4	47	29	0.02	0.0
November 5	46	37	0.09	0.0
November 6	45	29	0.08	0.0
November 7	38	24	0.00	0.0
November 8	42	23	0.00	0.0
November 9	42	33	0.04	0.5
November 10	39	32	0.02	0.2
November 11	39	28	0.00	0.0
November 12	44	36	0.61	0.0
November 13	41	35	0.02	0.0
November 14	39	27	0.00	0.0
November 15	37	30	0.00	0.1
November 16	40	32	0.68	1.3
November 17	42	34	0.40	0.0
November 18	36	26	0.45	6.8
November 19	31	20	0.15	1.4
November 20	26	18	0.33	6.7
November 21	41	26	0.77	2.2
November 22	36	33	0.28	0.3
November 23	36	33	0.12	0.7
November 24	38	34	0.30	0.3
November 25	44	33	0.99	0.4
November 26	36	31	0.05	1.2
November 27	36	31	0.18	1.9
November 28	35	27	0.30	3.5
November 29	36	29	0.15	2.0
November 30	37	33	0.30	1.9

December 2021 Juneau Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	39	31	0.13	0.5
December 2	35	30	0.06	1.3
December 3	32	20	0.12	2.3
December 4	26	16	0.00	0.0
December 5	28	18	0.10	4.4
December 6	31	28	0.06	1.2
December 7	36	31	0.25	3.3
December 8	36	34	0.27	0.5
December 9	36	34	0.24	1.0
December 10	37	29	0.34	1.4
December 11	33	22	0.00	0.0
December 12	30	17	0.00	0.0
December 13	18	8	0.00	0.0
December 14	17	6	0.00	0.0
December 15	21	6	0.00	0.0
December 16	23	9	0.00	0.0
December 17	26	12	0.10	2.1
December 18	20	8	0.00	0.0
December 19	22	9	0.00	0.0
December 20	29	8	0.03	0.3
December 21	33	18	0.36	7.1
December 22	29	5	0.00	0.0
December 23	25	10	0.01	0.0
December 24	24	7	0.00	0.0
December 25	20	1	0.00	0.0
December 26	20	0	0.13	1.0
December 27	23	10	0.18	2.2
December 28	23	9	0.00	0.0
December 29	31	11	0.16	1.3
December 30	20	6	0.00	0.0
December 31	34	10	0.33	2.1

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Weather Station Details

Years	Station	Coordinates
1960–2024	Juneau International Airport	location
1890–1959	Downtown Juneau	location