Ames September 21 Weather Records

Daily averages and all-time records for weather in Ames, Iowa for the date of September 21.
September 21 All-Time Records
1893–2024
Highest temperature 91 °F 2016
Lowest temperature 26 °F 1918
Lowest daily high 51 °F 1983
Highest daily low 70 °F 2019
Most precipitation 1.75 inches 2010
September 21 Average Weather
1991–2020 1
Average high 74.1 °F
Average low 49.5 °F
Chance precipitation 31.9%
Ames September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 83 50 0.00 0.0
2022 75 54 0.00 0.0
2021 74 49 0.00 n/a
2020 79 44 0.00 n/a
2019 76 70 0.08 n/a
2018 68 45 0.01 n/a
2017 88 63 0.00 n/a
2016 91 68 0.00 n/a
2015 76 50 0.00 n/a
2014 69 49 0.00 n/a
2013 73 41 0.00 n/a
2012 70 44 0.00 n/a
2011 66 48 0.00 n/a
2010 74 65 1.75 n/a
2009 71 53 0.41 n/a
2008 77 49 0.00 n/a
2007 90 54 0.01 n/a
2006 63 49 0.55 n/a
2005 90 53 0.00 n/a
2004 82 54 0.00 n/a
2003 58 43 0.01 n/a
2002 67 50 0.00 n/a
2001 72 50 0.01 n/a
2000 67 32 0.00 n/a
1999 65 32 0.00 n/a
1998 76 48 0.00 0.0
1997 66 40 0.00 0.0
1996 68 49 0.00 0.0
1995 53 38 0.16 0.0
1994 82 58 1.30 0.0
1993 70 53 0.00 0.0
1992 72 57 0.04 0.0
1991 66 34 0.00 0.0
1990 70 55 0.00 0.0
1989 79 53 0.00 0.0
1988 71 47 0.52 0.0
1987 66 48 0.00 0.0
1986 86 65 0.00 0.0
1985 60 48 0.32 0.0
1984 83 52 0.00 0.0
1983 51 33 0.00 0.0
1982 61 36 0.00 0.0
1981 81 50 0.00 0.0
1980 85 51 0.00 0.0
1979 73 43 0.00 0.0
1978 67 46 0.00 0.0
1977 73 58 0.00 0.0
1976 69 47 0.00 0.0
1975 60 45 0.00 0.0
1974 68 42 0.00 0.0
1973 74 51 0.01 0.0
1972 71 49 0.03 0.0
1971 71 45 0.00 0.0
1970 87 67 0.21 0.0
1969 76 47 0.00 0.0
1968 79 56 0.02 0.0
1967 70 53 0.00 0.0
1966 81 46 0.00 0.0
1965 66 54 0.89 0.0
1963 73 49 0.00 0.0
1962 71 43 0.00 0.0
1961 78 52 0.02 0.0
1960 72 55 0.00 0.0
1959 79 63 0.07 0.0
1958 75 50 0.06 0.0
1957 68 49 0.21 0.0
1956 87 50 0.00 0.0
1955 81 57 0.88 0.0
1954 65 45 0.00 0.0
1953 62 41 0.00 0.0
1952 72 36 0.00 0.0
1951 71 46 0.11 0.0
1950 72 60 0.23 0.0
1949 77 50 0.00 0.0
1948 82 64 0.34 0.0
1947 75 58 0.00 0.0
1946 77 54 n/a 0.0
1945 69 44 0.00 0.0
1944 75 57 0.00 0.0
1943 75 42 0.00 0.0
1942 72 42 0.00 0.0
1941 85 68 0.00 0.0
1940 89 61 0.00 0.0
1939 81 38 0.00 0.0
1938 74 41 0.00 0.0
1937 90 48 0.00 0.0
1936 86 50 0.00 0.0
1935 80 50 0.00 0.0
1934 51 41 0.13 0.0
1933 83 45 0.00 0.0
1932 62 43 0.09 0.0
1931 73 65 0.80 0.0
1930 82 49 0.00 0.0
1929 70 51 0.00 0.0
1928 72 44 0.12 0.0
1927 60 46 0.00 0.0
1926 87 64 0.00 0.0
1925 83 43 0.00 0.0
1924 78 49 0.00 0.0
1923 73 42 0.00 0.0
1922 75 45 0.00 0.0
1921 77 53 0.00 0.0
1920 88 61 0.00 0.0
1919 82 54 0.50 0.0
1918 67 26 0.00 0.0
1917 70 53 0.00 0.0
1916 70 47 0.00 0.0
1915 65 37 0.00 0.0
1914 82 67 0.46 0.0
1913 62 39 0.00 0.0
1912 63 37 0.00 0.0
1911 79 44 0.09 0.0
1910 85 68 0.00 0.0
1909 80 58 0.00 0.0
1908 87 53 0.00 0.0
1907 69 42 0.00 0.0
1906 75 52 0.02 0.0
1905 84 55 0.00 0.0
1904 57 45 0.01 0.0
1903 81 55 0.00 0.0
1902 69 60 0.05 0.0
1901 74 39 0.00 0.0
1900 75 42 0.00 0.0
1899 81 42 0.15 0.0
1898 84 60 0.00 0.0
1897 80 37 0.00 0.0
1896 63 34 0.00 0.0
1895 88 65 0.00 0.0
1894 79 54 0.13 0.0
1893 90 55 0.00 0.0
What's the all-time high for Ames on 9/21?
For the date of Sep 21, the highest temperature ever reached in Ames history is 91 °F which happened in 2016.
Highest Temperatures in Ames on September 21
Rank Temperature Year
1 91 °F 2016
2 90 °F 2005
2 90 °F 2007
2 90 °F 1937
2 90 °F 1893
6 89 °F 1940
7 88 °F 2017
7 88 °F 1895
7 88 °F 1920
10 87 °F 1926
10 87 °F 1970
10 87 °F 1908
10 87 °F 1956
What's the all-time low for Ames on 9/21?
For the date of Sep 21, the lowest temperature ever reached in Ames history is 26 °F which happened in 1918.
Lowest Temperatures in Ames on September 21
Rank Temperature Year
1 26 °F 1918
2 32 °F 1999
2 32 °F 2000
4 33 °F 1983
5 34 °F 1991
5 34 °F 1896
7 36 °F 1982
7 36 °F 1952
9 37 °F 1897
9 37 °F 1915
9 37 °F 1912
Lowest High Temperatures in Ames on September 21
Rank Temperature Year
1 51 °F 1983
1 51 °F 1934
3 53 °F 1995
4 57 °F 1904
5 58 °F 2003
6 60 °F 1975
6 60 °F 1927
6 60 °F 1985
9 61 °F 1982
10 62 °F 1932
10 62 °F 1953
10 62 °F 1913
What's the most it has ever rained in Ames on 9/21?
For the date of Sep 21, the most precipitation ever recorded in Ames history is 1.75 inches which happened in 2010.
All-Time Most Precipitation in Ames on September 21
Rank Precipitation Year
1 1.75 inches 2010
2 1.30 inches 1994
3 0.89 inches 1965
4 0.88 inches 1955
5 0.80 inches 1931
6 0.55 inches 2006
7 0.52 inches 1988
8 0.50 inches 1919
9 0.46 inches 1914
10 0.41 inches 2009
Weather Station Details
Years Station Coordinates
1999–2024 Ames Municipal Airport location
1964–1998 Ames 8 WSW location
1893–1964 Ames 3 Sw location