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
1890–2024
Highest temperature 70 °F 1896
Lowest temperature 30 °F 2018
Lowest daily high 48 °F 1978
Highest daily low 52 °F 2019
Most precipitation 2.14 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%
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
1942 n/a n/a n/a n/a
1941 n/a n/a n/a n/a
1940 n/a n/a n/a n/a
1939 n/a n/a n/a n/a
1938 n/a n/a n/a n/a
1937 n/a n/a n/a n/a
1936 n/a n/a n/a n/a
1935 n/a n/a n/a n/a
1934 n/a n/a n/a n/a
1933 n/a n/a n/a n/a
1932 n/a n/a n/a n/a
1931 n/a n/a n/a n/a
1930 n/a n/a n/a n/a
1929 n/a n/a n/a n/a
1928 n/a n/a n/a n/a
1927 n/a n/a n/a n/a
1926 n/a n/a n/a n/a
1925 n/a n/a n/a n/a
1924 n/a n/a n/a n/a
1923 n/a n/a n/a n/a
1922 n/a n/a n/a n/a
1921 n/a n/a n/a n/a
1920 n/a n/a n/a n/a
1919 n/a n/a n/a n/a
1918 n/a n/a n/a n/a
1917 n/a n/a n/a n/a
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
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 70 40 0.00 n/a
1895 52 33 0.00 n/a
1894 n/a n/a n/a n/a
1893 n/a n/a n/a n/a
1892 n/a n/a n/a n/a
1891 n/a n/a n/a n/a
1890 n/a n/a n/a 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 1976
6 62 °F 1910
6 62 °F 1977
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 1895
3 33 °F 2010
5 35 °F 1980
5 35 °F 1906
5 35 °F 1969
5 35 °F 2000
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 1943
2 49 °F 1908
5 50 °F 1991
5 50 °F 1949
5 50 °F 1966
5 50 °F 2015
5 50 °F 2006
5 50 °F 1993
5 50 °F 1994
5 50 °F 1996
5 50 °F 1901
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
1960–2024 Juneau International Airport location
1890–1959 Downtown Juneau location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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