Juneau September 21 Weather Records

Daily averages and all-time records for weather in Juneau, Alaska for the date of September 21.
September 21 All-Time Records
1890–2024
Highest temperature 67 °F 1995
Lowest temperature 30 °F 2018
Lowest daily high 48 °F 2015
Highest daily low 54 °F 1995
Most precipitation 2.30 inches 1994
Most snow none -
September 21 Average Weather
1991–2020 1
Average high 54.6 °F
Average low 43.1 °F
Chance precipitation 74.9%
Chance snow 0.2%
Juneau September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 55 50 2.00 0.0
2022 57 51 0.84 0.0
2021 54 44 0.84 0.0
2020 56 48 0.04 0.0
2019 57 49 0.45 0.0
2018 60 30 0.00 0.0
2017 56 39 0.28 0.0
2016 59 44 0.00 0.0
2015 48 39 0.18 0.0
2014 59 49 0.99 0.0
2013 51 47 0.42 0.0
2012 61 45 0.00 0.0
2011 53 48 1.34 0.0
2010 61 31 0.00 0.0
2009 54 45 0.61 0.0
2008 51 43 0.19 0.0
2007 50 45 0.47 0.0
2006 54 47 0.19 0.0
2005 55 45 0.02 0.0
2004 55 48 0.42 0.0
2003 48 40 0.31 0.0
2002 55 37 0.66 0.0
2001 52 43 0.33 0.0
2000 55 32 0.00 0.0
1999 56 49 0.27 0.0
1998 59 47 0.02 0.0
1997 53 47 0.55 0.0
1996 49 41 0.17 0.0
1995 67 54 0.18 0.0
1994 59 49 2.30 0.0
1993 52 48 0.73 0.0
1992 52 44 0.01 0.0
1991 53 46 0.20 0.0
1990 57 54 1.05 0.0
1989 58 48 0.40 0.0
1988 51 44 0.08 0.0
1987 52 44 0.11 0.0
1986 55 50 0.21 0.0
1985 53 40 0.03 0.0
1984 60 39 0.00 0.0
1983 58 51 0.27 0.0
1982 56 38 0.00 0.0
1981 57 35 0.00 0.0
1980 50 39 0.51 0.0
1979 50 39 0.11 0.0
1978 53 41 0.09 0.0
1977 53 50 1.28 0.0
1976 56 41 0.42 0.0
1975 61 40 0.00 0.0
1974 60 39 0.00 0.0
1973 54 42 0.53 0.0
1972 53 38 0.00 0.0
1971 58 48 0.18 0.0
1970 48 43 0.19 0.0
1969 50 41 0.16 0.0
1968 51 42 0.05 0.0
1967 54 38 0.00 0.0
1966 53 38 0.48 0.0
1965 54 47 0.14 0.0
1964 55 48 0.21 0.0
1963 52 46 0.21 0.0
1962 57 45 0.15 0.0
1961 52 40 0.00 0.0
1960 51 46 0.89 0.0
1959 56 45 0.44 0.0
1958 54 31 0.00 0.0
1957 60 48 0.53 0.0
1956 48 42 0.74 0.0
1955 59 35 0.00 0.0
1954 56 50 2.14 0.0
1953 60 43 0.00 0.0
1952 61 48 0.02 0.0
1951 60 48 0.00 0.0
1950 57 47 0.81 0.0
1949 52 46 0.20 0.0
1948 56 43 0.45 n/a
1947 55 44 0.47 0.0
1946 48 42 0.00 0.0
1945 57 39 0.00 0.0
1944 61 53 0.00 0.0
1943 52 47 0.16 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 54 46 0.21 0.0
1915 60 n/a 0.21 n/a
1914 49 43 1.25 n/a
1913 52 41 1.45 n/a
1912 50 43 0.00 0.0
1911 55 39 0.00 0.0
1910 62 45 0.08 0.0
1909 51 42 0.97 0.0
1908 50 44 0.20 0.0
1907 55 45 2.10 0.0
1906 56 34 0.00 0.0
1905 55 44 0.20 0.0
1904 53 41 n/a 0.0
1903 49 37 0.00 0.0
1902 52 45 0.50 0.0
1901 59 43 0.00 n/a
1900 53 44 0.14 n/a
1899 49 44 0.76 n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 56 44 1.61 n/a
1895 49 39 1.05 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 9/21?
For the date of Sep 21, the highest temperature ever reached in Juneau history is 67 °F which happened in 1995.
Highest Temperatures in Juneau on September 21
Rank Temperature Year
1 67 °F 1995
2 62 °F 1910
3 61 °F 2012
3 61 °F 1975
3 61 °F 1952
3 61 °F 1944
3 61 °F 2010
8 60 °F 1953
8 60 °F 2018
8 60 °F 1951
8 60 °F 1915
8 60 °F 1957
8 60 °F 1974
8 60 °F 1984
What's the all-time low for Juneau on 9/21?
For the date of Sep 21, the lowest temperature ever reached in Juneau history is 30 °F which happened in 2018.
Lowest Temperatures in Juneau on September 21
Rank Temperature Year
1 30 °F 2018
2 31 °F 1958
2 31 °F 2010
4 32 °F 2000
5 34 °F 1906
6 35 °F 1981
6 35 °F 1955
8 37 °F 1903
8 37 °F 2002
10 38 °F 1966
10 38 °F 1982
10 38 °F 1972
10 38 °F 1967
Lowest High Temperatures in Juneau on September 21
Rank Temperature Year
1 48 °F 2015
1 48 °F 1956
1 48 °F 1946
1 48 °F 1970
1 48 °F 2003
6 49 °F 1914
6 49 °F 1996
6 49 °F 1903
6 49 °F 1899
6 49 °F 1895
What's the most it has ever rained in Juneau on 9/21?
For the date of Sep 21, the most precipitation ever recorded in Juneau history is 2.30 inches which happened in 1994.
All-Time Most Precipitation in Juneau on September 21
Rank Precipitation Year
1 2.30 inches 1994
2 2.14 inches 1954
3 2.10 inches 1907
4 2.00 inches 2023
5 1.61 inches 1896
6 1.45 inches 1913
7 1.34 inches 2011
8 1.28 inches 1977
9 1.25 inches 1914
10 1.05 inches 1895
10 1.05 inches 1990
Weather Station Details
Years Station Coordinates
1960–2024 Juneau International Airport location
1890–1959 Downtown Juneau location