Juneau September 20 Weather Records

Daily averages and all-time records for weather in Juneau, Alaska for the date of September 20.

September 20 All-Time Records 1890–2023
Highest temperature	70 °F	1896
Lowest temperature	30 °F	2018
Lowest daily high	48 °F	1978
Highest daily low	52 °F	2019
Most precipitation	2.1 inches	1948
Most snow	none	-

September 20 All-Time Records
1890–2023

Highest temperature

70 °F

30 °F

48 °F

Highest daily low

52 °F

2019

Most precipitation

2.1 inches

1948

Most snow

none

September 20 Average Weather 1991–2020 ¹
Average high	54.9 °F
Average low	43.3 °F
Chance precipitation	74.3%
Chance snow	0.2%

September 20 Average Weather
1991–2020 ¹

Average high

54.9 °F

Average low

43.3 °F

Chance precipitation

74.3%

Chance snow

0.2%

Juneau September 20 Weather by Year

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	53	45	1.16	0.0
2022	59	51	0.00	0.0
2021	55	50	0.68	0.0
2020	55	46	0.02	0.0
2019	56	52	1.26	0.0
2018	61	30	0.00	0.0
2017	63	40	0.00	0.0
2016	59	39	0.00	0.0
2015	50	42	0.49	0.0
2014	54	49	0.68	0.0
2013	56	48	1.05	0.0
2012	56	45	0.08	0.0
2011	53	49	0.53	0.0
2010	60	33	0.00	0.0
2009	52	49	0.61	0.0
2008	55	44	0.27	0.0
2007	51	46	0.61	0.0
2006	50	47	0.59	0.0
2005	49	46	0.87	0.0
2004	53	45	1.30	0.0
2003	51	46	0.57	0.0
2002	53	47	0.12	0.0
2001	54	45	0.13	0.0
2000	53	35	0.00	0.0
1999	51	49	0.69	0.0
1998	55	49	0.04	0.0
1997	52	46	0.46	0.0
1996	50	41	0.03	0.0
1995	68	44	0.00	0.0
1994	50	42	1.46	0.0
1993	50	46	0.16	0.0
1992	52	43	0.24	0.0
1991	50	46	0.21	0.0
1990	55	50	0.54	0.0
1989	59	48	0.13	0.0
1988	52	47	0.10	0.0
1987	53	46	0.03	0.0
1986	58	45	0.00	0.0
1985	53	44	0.03	0.0
1984	55	44	0.02	0.0
1983	55	49	1.14	0.0
1982	58	43	0.06	0.0
1981	57	39	0.00	0.0
1980	60	35	0.00	0.0
1979	56	38	0.00	0.0
1978	48	46	0.05	0.0
1977	62	45	0.00	0.0
1976	62	46	0.00	0.0
1975	62	45	0.00	0.0
1974	59	42	0.00	0.0
1973	64	40	0.00	0.0
1972	56	38	0.00	0.0
1971	55	46	0.01	0.0
1970	51	44	0.34	0.0
1969	55	35	0.00	0.0
1968	51	43	0.18	0.0
1967	54	40	0.00	0.0
1966	50	43	0.03	0.0
1965	55	49	0.32	0.0
1964	55	47	0.09	0.0
1963	56	47	0.84	0.0
1962	57	52	0.06	0.0
1961	58	41	0.00	0.0
1960	51	46	0.12	0.0
1959	63	42	0.00	0.0
1958	54	45	0.52	0.0
1957	53	49	0.09	0.0
1956	54	46	0.54	0.0
1955	58	32	0.00	0.0
1954	55	46	2.05	0.0
1953	53	46	0.22	0.0
1952	59	43	0.01	0.0
1951	56	42	0.00	0.0
1950	57	49	1.49	0.0
1949	50	46	0.31	0.0
1948	n/a	43	2.14	n/a
1947	56	44	0.47	0.0
1946	53	43	0.15	0.0
1945	51	42	0.01	0.0
1944	61	47	0.00	0.0
1943	49	45	0.94	0.0
1916	52	45	0.50	0.0
1915	53	n/a	1.04	n/a
1914	56	42	n/a	n/a
1913	53	41	0.77	n/a
1912	51	47	0.80	0.0
1911	56	49	0.00	0.0
1910	62	45	0.05	0.0
1909	53	43	0.96	0.0
1908	49	43	0.35	0.0
1907	57	45	0.15	0.0
1906	57	35	0.00	0.0
1905	55	44	0.79	0.0
1904	56	39	n/a	0.0
1903	53	37	0.00	0.0
1902	54	48	0.08	0.0
1901	50	40	0.41	n/a
1900	56	48	0.68	n/a
1899	53	48	0.10	n/a
1896	70	40	0.00	n/a
1895	52	33	0.00	n/a

What's the all-time high for Juneau on 9/20?

For the date of Sep 20, the highest temperature ever reached in Juneau history is 70 °F which happened in 1896.

Highest Temperatures in Juneau on September 20

Rank	Temperature	Year
1	70 °F	1896
2	68 °F	1995
3	64 °F	1973
4	63 °F	2017
4	63 °F	1959
6	62 °F	1910
6	62 °F	1977
6	62 °F	1976
6	62 °F	1975
10	61 °F	2018
10	61 °F	1944

What's the all-time low for Juneau on 9/20?

For the date of Sep 20, the lowest temperature ever reached in Juneau history is 30 °F which happened in 2018.

Lowest Temperatures in Juneau on September 20

Rank	Temperature	Year
1	30 °F	2018
2	32 °F	1955
3	33 °F	2010
3	33 °F	1895
5	35 °F	1980
5	35 °F	2000
5	35 °F	1906
5	35 °F	1969
9	37 °F	1903
10	38 °F	1979
10	38 °F	1972

Lowest High Temperatures in Juneau on September 20

Rank	Temperature	Year
1	48 °F	1978
2	49 °F	2005
2	49 °F	1908
2	49 °F	1943
5	50 °F	1996
5	50 °F	1949
5	50 °F	1991
5	50 °F	1994
5	50 °F	1993
5	50 °F	1901
5	50 °F	2006
5	50 °F	2015
5	50 °F	1966

What's the most it has ever rained in Juneau on 9/20?

For the date of Sep 20, the most precipitation ever recorded in Juneau history is 2.14 inches which happened in 1948.

All-Time Most Precipitation in Juneau on September 20

Rank	Precipitation	Year
1	2.14 inches	1948
2	2.05 inches	1954
3	1.49 inches	1950
4	1.46 inches	1994
5	1.30 inches	2004
6	1.26 inches	2019
7	1.16 inches	2023
8	1.14 inches	1983
9	1.05 inches	2013
10	1.04 inches	1915

Weather Station Details

Years	Station	Coordinates
1960–2023	Juneau International Airport	location
1890–1959	Downtown Juneau	location