Ann Arbor September 21 Weather Records

Daily averages and all-time records for weather in Ann Arbor, Michigan for the date of September 21.
September 21 All-Time Records
1891–2024
Highest temperature 92 °F 1908
Lowest temperature 33 °F 1956
Lowest daily high 53 °F 1918
Highest daily low 70 °F 1931
Most precipitation 1.36 inches 2014
Most snow none -
September 21 Average Weather
1991–2020 1
Average high 72.9 °F
Average low 51.8 °F
Chance precipitation 38.7%
Chance snow 0%
Ann Arbor September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 81 50 0.00 0.0
2022 86 60 0.64 0.0
2021 77 67 0.09 0.0
2020 72 36 0.00 0.0
2019 85 60 0.57 0.0
2018 81 65 0.04 0.0
2017 91 61 0.00 0.0
2016 83 57 0.00 0.0
2015 73 48 0.00 0.0
2014 72 57 1.36 n/a
2013 69 58 0.39 n/a
2012 72 47 0.00 n/a
2011 78 59 0.00 n/a
2010 88 57 0.00 0.0
2009 77 65 0.12 0.0
2008 79 56 0.00 0.0
2007 87 57 0.00 0.0
2006 65 39 0.00 0.0
2005 85 54 0.00 0.0
2004 84 50 0.00 0.0
2003 71 47 0.00 0.0
2002 80 60 0.52 0.0
2001 66 50 0.37 0.0
2000 70 48 0.09 0.0
1999 65 46 0.19 0.0
1998 84 65 0.25 0.0
1997 63 40 0.00 0.0
1996 71 54 0.23 0.0
1995 61 49 0.01 0.0
1994 81 55 0.00 0.0
1993 58 50 0.38 0.0
1992 72 56 0.30 0.0
1991 64 34 0.00 0.0
1990 68 50 0.43 0.0
1989 78 50 0.00 0.0
1988 56 52 0.02 0.0
1987 67 47 0.10 0.0
1986 71 57 0.00 0.0
1985 81 56 0.00 0.0
1984 78 49 0.00 0.0
1983 73 46 1.15 0.0
1982 58 38 0.05 0.0
1981 60 43 0.01 0.0
1980 83 64 0.00 0.0
1979 71 55 0.00 0.0
1978 87 58 0.01 0.0
1977 63 52 0.00 0.0
1976 64 41 0.16 0.0
1975 59 49 0.01 0.0
1974 63 50 0.01 0.0
1973 65 40 0.00 0.0
1972 72 53 0.00 0.0
1971 71 45 0.00 0.0
1970 88 65 0.00 0.0
1969 68 58 0.00 0.0
1968 82 64 0.00 0.0
1967 76 61 0.99 0.0
1966 64 57 0.17 0.0
1965 84 67 0.00 0.0
1964 83 64 0.00 0.0
1963 65 48 0.00 0.0
1962 62 42 0.00 0.0
1961 81 62 0.00 0.0
1960 72 56 0.00 0.0
1959 85 64 0.00 0.0
1958 72 57 0.05 0.0
1957 79 61 0.26 0.0
1956 55 33 0.05 0.0
1955 n/a n/a n/a n/a
1954 67 51 0.10 0.0
1953 n/a 48 0.05 0.0
1952 63 47 0.00 0.0
1951 84 58 0.00 0.0
1950 66 55 0.00 0.0
1949 70 47 0.00 0.0
1948 67 52 0.00 0.0
1947 80 51 0.75 0.0
1946 81 58 0.00 0.0
1945 68 54 0.00 0.0
1944 75 65 0.00 0.0
1943 67 44 0.00 0.0
1942 65 38 0.00 0.0
1941 85 52 0.00 0.0
1940 82 68 0.00 0.0
1939 72 45 0.00 0.0
1938 60 46 0.05 0.0
1937 73 47 0.00 0.0
1936 79 56 0.00 0.0
1935 72 60 0.06 0.0
1934 86 60 0.00 0.0
1933 59 54 0.00 0.0
1932 73 58 0.00 0.0
1931 90 70 0.00 0.0
1930 74 46 0.00 n/a
1929 64 41 0.00 n/a
1928 59 46 0.00 n/a
1927 60 43 0.00 n/a
1926 73 49 0.00 n/a
1925 76 52 0.00 n/a
1924 82 66 0.03 n/a
1923 58 54 0.32 0.0
1922 72 49 0.00 0.0
1921 73 64 0.10 0.0
1920 84 48 0.00 n/a
1919 74 65 0.97 n/a
1918 53 37 0.00 n/a
1917 70 53 0.00 n/a
1916 70 55 0.05 n/a
1915 57 45 0.00 n/a
1914 88 60 0.00 n/a
1913 55 43 0.00 n/a
1912 78 52 0.22 n/a
1911 61 49 0.23 n/a
1910 74 50 0.00 n/a
1909 77 60 0.00 n/a
1908 92 57 0.00 n/a
1907 69 58 0.00 n/a
1906 89 65 0.02 0.0
1905 80 53 0.00 n/a
1904 59 37 0.00 n/a
1903 81 49 0.00 n/a
1902 82 57 0.00 n/a
1901 68 36 0.00 n/a
1900 68 49 0.00 n/a
1899 68 36 0.00 n/a
1898 79 42 0.00 n/a
1897 67 37 0.00 n/a
1896 64 47 n/a n/a
1895 91 66 0.00 n/a
1894 74 53 n/a n/a
1893 76 51 n/a n/a
1892 74 53 0.00 n/a
What's the all-time high for Ann Arbor on 9/21?
For the date of Sep 21, the highest temperature ever reached in Ann Arbor history is 92 °F which happened in 1908.
Highest Temperatures in Ann Arbor on September 21
Rank Temperature Year
1 92 °F 1908
2 91 °F 1895
2 91 °F 2017
4 90 °F 1931
5 89 °F 1906
6 88 °F 1914
6 88 °F 1970
6 88 °F 2010
9 87 °F 2007
9 87 °F 1978
What's the all-time low for Ann Arbor on 9/21?
For the date of Sep 21, the lowest temperature ever reached in Ann Arbor history is 33 °F which happened in 1956.
Lowest Temperatures in Ann Arbor on September 21
Rank Temperature Year
1 33 °F 1956
2 34 °F 1991
3 36 °F 1899
3 36 °F 1901
3 36 °F 2020
6 37 °F 1897
6 37 °F 1904
6 37 °F 1918
9 38 °F 1982
9 38 °F 1942
Lowest High Temperatures in Ann Arbor on September 21
Rank Temperature Year
1 53 °F 1918
2 55 °F 1956
2 55 °F 1913
4 56 °F 1988
5 57 °F 1915
6 58 °F 1993
6 58 °F 1982
6 58 °F 1923
9 59 °F 1904
9 59 °F 1933
9 59 °F 1928
9 59 °F 1975
What's the most it has ever rained in Ann Arbor on 9/21?
For the date of Sep 21, the most precipitation ever recorded in Ann Arbor history is 1.36 inches which happened in 2014.
All-Time Most Precipitation in Ann Arbor on September 21
Rank Precipitation Year
1 1.36 inches 2014
2 1.15 inches 1983
3 0.99 inches 1967
4 0.97 inches 1919
5 0.75 inches 1947
6 0.64 inches 2022
7 0.57 inches 2019
8 0.52 inches 2002
9 0.43 inches 1990
10 0.39 inches 2013
Weather Station Details
Years Station Coordinates
1891–2024 University of Michigan location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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