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Juneau August Weather

Averages and records for weather in Juneau, Alaska in the month of August.

Typical Juneau August Weather 1991–2020
Average daily high	62.9 °F
Average daily low	49.4 °F
Average monthly precipitation	6.4 inches
Average monthly snow	none
Daily chance of precipitation	62.5%
Daily chance of snow	0%

Juneau August Weather Records 1890–2024
Highest temperature	87 °F	August 9, 1957
Lowest temperature	31 °F	August 24, 1969
Highest daily low	67 °F	August 9, 1911
Lowest daily high	47 °F	August 29, 1984
Hottest average high temperature	71.7 °F	1957
Coldest average high temperature	56.0 °F	1902
Most daily precipitation	2.6 inches	August 15, 1943
Most monthly precipitation	14.0 inches	1901
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
August 1	64.6	50.4	82	39
August 2	64.6	50.3	83	41
August 3	64.6	50.4	82	38
August 4	64.5	50.3	82	39
August 5	64.4	50.3	81	38
August 6	64.4	50.2	81	39
August 7	64.3	50.1	83	40
August 8	64.2	50.1	82	40
August 9	64.1	50.0	87	40
August 10	63.9	50.0	85	40
August 11	63.8	49.9	83	42
August 12	63.7	49.7	82	42
August 13	63.5	49.7	79	39
August 14	63.3	49.6	79	40
August 15	63.2	49.5	84	39
August 16	63.0	49.4	84	35
August 17	62.7	49.3	79	40
August 18	62.4	49.2	79	34
August 19	62.2	49.1	81	39
August 20	61.9	48.9	83	39
August 21	61.7	48.8	78	38
August 22	61.5	48.6	79	38
August 23	61.3	48.5	80	35
August 24	61.0	48.4	76	31
August 25	60.7	48.3	77	35
August 26	60.5	48.1	78	37
August 27	60.2	48.0	76	36
August 28	60.0	47.8	78	35
August 29	59.7	47.6	78	37
August 30	59.4	47.4	76	35
August 31	59.2	47.2	75	34

Weather Station Details

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