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| TEAM | SEASON | RECORD | PERC | CNF STAND | CNF RECORD | CNF PERC |
| Iowa | 1899 | 8-0-1 | .944 | Independent | ||
| Iowa | 1900 | 7-0-1 | .938 | 2nd Western | 2-0-1 | .833 |
| Iowa | 1901 | 6-3 | .667 | 9th Western | 0-3 | .000 |
| Iowa | 1902 | 5-4 | .556 | 7th Western | 0-3 | .000 |
| Iowa | 1903 | 9-2 | .818 | 5th Western | 1-1 | .500 |
| Iowa | 1904 | 7-4 | .636 | T7th Western | 0-3 | .000 |
| Iowa | 1905 | 8-2 | .800 | T7th Western | 0-2 | .000 |
| Iowa | 1906 | 2-3 | .400 | 6th Western | 0-1 | .000 |
| Iowa | 1907 | 3-2 | .600 | 3rd Western | 2-1 | .667 |
| Iowa | 1907 | 3-2 | .600 | 2nd MVIAA | 2-1 | .667 |
| Iowa | 1908 | 2-5 | .286 | 7th MVIAA | 0-5 | .000 |
| Iowa | 1908 | 2-5 | .286 | 8th Western | 0-5 | .000 |
| Iowa | 1909 | 2-4-1 | .357 | 4th MVIAA | 1-4-1 | .250 |
| Iowa | 1909 | 2-4-1 | .357 | 7th Western | 1-4-1 | .250 |
| Iowa | 1910 | 5-2 | .714 | 2nd MVIAA | 4-2 | .667 |
| Iowa | 1910 | 5-2 | .714 | 4th Western | 4-2 | .667 |
| Iowa | 1911 | 3-4 | .429 | T4th Western | 2-2 | .500 |
| Iowa | 1912 | 4-3 | .571 | 7th Western | 1-3 | .250 |
| Iowa | 1913 | 5-2 | .714 | T2nd Western | 2-1 | .667 |
| Iowa | 1914 | 4-3 | .571 | 7th Western | 1-2 | .333 |
| Iowa | 1915 | 3-4 | .429 | 7th Western | 1-2 | .333 |
| Iowa | 1916 | 4-3 | .571 | 7th Western | 1-2 | .333 |
| Iowa | 1917 | 3-5 | .375 | 9th Western | 0-2 | .000 |
| Iowa | 1918 | 6-2-1 | .722 | T4th Western | 2-1 | .667 |
| Iowa | 1919 | 5-2 | .714 | 6th Western | 2-2 | .500 |
| Iowa | 1920 | 5-2 | .714 | 5th Western | 3-2 | .600 |
| Iowa | 1921 | 7-0 | 1.000 | 1st Western | 5-0 | 1.000 |
| Iowa | 1922 | 7-0 | 1.000 | 1st Western | 5-0 | 1.000 |
| Iowa | 1923 | 5-3 | .625 | 5th Western | 3-3 | .500 |
| Iowa | 1924 | 6-1-1 | .813 | T2nd Western | 3-1-1 | .700 |
| Iowa | 1925 | 5-3 | .625 | T4th Western | 2-2 | .500 |
| Iowa | 1926 | 3-5 | .375 | T9th Western | 0-5 | .000 |
| Iowa | 1927 | 4-4 | .500 | T9th Western | 1-4 | .200 |
| Iowa | 1928 | 6-2 | .750 | T4th Western | 3-2 | .600 |
| Iowa | 1929 | 4-2-2 | .625 | T5th Western | 2-2-2 | .500 |
| Iowa | 1930 | 4-4 | .500 | 9th Western | 0-1 | .000 |
| Iowa | 1931 | 1-6-1 | .188 | 9th Western | 0-3-1 | .125 |
| Iowa | 1932 | 1-7 | .125 | 10th Western | 0-5 | .000 |
| Iowa | 1933 | 5-3 | .625 | T5th Western | 3-2 | .600 |
| Iowa | 1934 | 2-5-1 | .313 | T8th Western | 1-3-1 | .300 |
| Iowa | 1935 | 4-2-2 | .625 | 8th Western | 1-2-2 | .400 |
| Iowa | 1936 | 3-4-1 | .438 | 8th Western | 0-4-1 | .100 |
| Iowa | 1937 | 1-7 | .125 | 10th Western | 0-5 | .000 |
| Iowa | 1938 | 1-6-1 | .188 | 8th Western | 1-3-1 | .300 |
| Iowa | 1939 | 6-1-1 | .813 | 2nd Western | 4-1-1 | .750 |
| Iowa | 1940 | 4-4 | .500 | T6th Western | 2-3 | .400 |
| Iowa | 1941 | 3-5 | .375 | 6th Western | 2-4 | .333 |
| Iowa | 1942 | 6-4 | .600 | T5th Western | 3-3 | .500 |
| Iowa | 1943 | 1-6-1 | .188 | 9th Western | 0-4-1 | .100 |
| Iowa | 1944 | 1-7 | .125 | 9th Western | 0-6 | .000 |
| Iowa | 1945 | 2-7 | .222 | T8th Western | 1-5 | .167 |
| Iowa | 1946 | 5-4 | .556 | 4th Western | 3-3 | .500 |
| Iowa | 1947 | 3-5-1 | .389 | T6th Western | 2-3-1 | .417 |
| Iowa | 1948 | 4-5 | .444 | T5th Western | 2-4 | .333 |
| Iowa | 1949 | 4-5 | .444 | T5th Western | 3-3 | .500 |
| Iowa | 1950 | 3-5-1 | .389 | 6th Western | 2-4 | .333 |
| Iowa | 1951 | 2-5-2 | .333 | 9th Western | 0-5-1 | .083 |
| Iowa | 1952 | 2-7 | .222 | T6th Western | 2-5 | .286 |
| Iowa | 1953 | 5-3-1 | .611 | T5th Big10 | 3-3 | .500 |
| Iowa | 1954 | 5-4 | .556 | 5th Big10 | 4-3 | .571 |
| Iowa | 1955 | 3-5-1 | .389 | 7th Big10 | 2-3-1 | .417 |
| Iowa | 1956 | 9-1 | .900 | 1st Big10 | 5-1 | .833 |
| Iowa | 1957 | 7-1-1 | .833 | 3rd Big10 | 4-1-1 | .750 |
| Iowa | 1958 | 8-1-1 | .850 | 1st Big10 | 5-1 | .833 |
| Iowa | 1959 | 5-4 | .556 | 6th Big10 | 3-3 | .500 |
| Iowa | 1960 | 8-1 | .889 | 2nd Big10 | 5-1 | .833 |
| Iowa | 1961 | 5-4 | .556 | T7th Big10 | 2-4 | .333 |
| Iowa | 1962 | 4-5 | .444 | T5th Big10 | 3-3 | .500 |
| Iowa | 1963 | 3-3-2 | .500 | 8th Big10 | 2-3-1 | .417 |
| Iowa | 1964 | 3-6 | .333 | T9th Big10 | 1-5 | .167 |
| Iowa | 1965 | 1-9 | .100 | 10th Big10 | 0-7 | .000 |
| Iowa | 1966 | 2-8 | .200 | 10th Big10 | 1-6 | .143 |
| Iowa | 1967 | 1-8-1 | .150 | T9th Big10 | 0-6-1 | .071 |
| Iowa | 1968 | 5-5 | .500 | T5th Big10 | 4-3 | .571 |
| Iowa | 1969 | 5-5 | .500 | T5th Big10 | 3-4 | .429 |
| Iowa | 1970 | 3-6-1 | .350 | 4th Big10 | 3-3-1 | .500 |
| Iowa | 1971 | 1-10 | .091 | 10th Big10 | 1-8 | .111 |
| Iowa | 1972 | 3-7-1 | .318 | T8th Big10 | 2-6-1 | .278 |
| Iowa | 1973 | 0-11 | .000 | T9th Big10 | 0-8 | .000 |
| Iowa | 1974 | 3-8 | .273 | T7th Big10 | 2-6 | .250 |
| Iowa | 1975 | 3-8 | .273 | T7th Big10 | 3-5 | .375 |
| Iowa | 1976 | 5-6 | .455 | T7th Big10 | 3-5 | .375 |
| Iowa | 1977 | 4-7 | .364 | T6th Big10 | 3-5 | .375 |
| Iowa | 1978 | 2-9 | .182 | 8th Big10 | 2-6 | .250 |
| Iowa | 1979 | 5-6 | .455 | 5th Big10 | 4-4 | .500 |
| Iowa | 1980 | 4-7 | .364 | 4th Big10 | 4-4 | .500 |
| Iowa | 1981 | 8-4 | .667 | T1st Big10 | 6-2 | .750 |
| Iowa | 1982 | 8-4 | .667 | 3rd Big10 | 6-2 | .750 |
| Iowa | 1983 | 9-3 | .750 | 3rd Big10 | 7-2 | .778 |
| Iowa | 1984 | 8-4-1 | .654 | T4th Big10 | 5-3-1 | .611 |
| Iowa | 1985 | 10-2 | .833 | 1st Big10 | 7-1 | .875 |
| Iowa | 1986 | 9-3 | .750 | T3rd Big10 | 5-3 | .625 |
| Iowa | 1987 | 10-3 | .769 | T2nd Big10 | 6-2 | .750 |
| Iowa | 1988 | 6-4-3 | .577 | 4th Big10 | 4-1-3 | .688 |
| Iowa | 1989 | 5-6 | .455 | T6th Big10 | 3-5 | .375 |
| Iowa | 1990 | 8-4 | .667 | T1st Big10 | 6-2 | .750 |
| Iowa | 1991 | 10-1-1 | .875 | 2nd Big10 | 7-1 | .875 |
| Iowa | 1992 | 5-7 | .417 | 5th Big10 | 4-4 | .500 |
| Iowa | 1993 | 6-6 | .500 | T8th Big10 | 3-5 | .375 |
| Iowa | 1994 | 5-5-1 | .500 | 7th Big10 | 3-4-1 | .438 |
| Iowa | 1995 | 8-4 | .667 | 6th Big10 | 4-4 | .500 |
| Iowa | 1996 | 9-3 | .750 | T3rd Big10 | 6-2 | .750 |
| Iowa | 1997 | 7-5 | .583 | T6th Big10 | 4-4 | .500 |
| Iowa | 1998 | 3-8 | .273 | T7th Big10 | 2-6 | .250 |
| Iowa | 1999 | 1-10 | .091 | 11th Big10 | 0-8 | .000 |
| Iowa | 2000 | 3-9 | .250 | 8th Big10 | 3-5 | .375 |
| Iowa | 2001 | 7-5 | .583 | T4th Big10 | 4-4 | .500 |
| Iowa | 2002 | 11-2 | .846 | T1st Big10 | 8-0 | 1.000 |
| Iowa | 2003 | 10-3 | .769 | T4th Big10 | 5-3 | .625 |
| Iowa | 2004 | 10-2 | .833 | T1st Big10 | 7-1 | .875 |
| Iowa | 2005 | 7-5 | .583 | T3rd Big10 | 5-3 | .625 |
| Iowa | 2006 | 6-7 | .462 | T8th Big10 | 2-6 | .250 |
| Iowa | 2007 | 6-6 | .500 | T5th Big10 | 4-4 | .500 |
| Iowa | 2008 | 9-4 | .692 | T4th Big10 | 5-3 | .625 |
| Iowa | 2009 | 11-2 | .846 | T2nd Big10 | 6-2 | .750 |
| Iowa | 2010 | 8-5 | .615 | T4th Big10 | 4-4 | .500 |
| Iowa | 2011 | 7-6 | .538 | 4th Big10 Legends | 4-4 | .500 |
| Iowa | 2012 | 4-8 | .333 | T5th Big10 Legends | 2-6 | .250 |
| Iowa | 2013 | 8-5 | .615 | T2nd Big10 Legends | 5-3 | .625 |
| Iowa | 2014 | 7-6 | .538 | 4th B10 West | 4-4 | .500 |
| Iowa | 2015 | 12-2 | .857 | 1st Big10 West | 8-0 | 1.000 |
| Iowa | 2016 | 8-5 | .615 | T2nd Big10 West | 6-3 | .667 |
| Iowa | 2017 | 8-5 | .615 | T3th Big10 West | 4-5 | .444 |
| Iowa | 2018 | 9-4 | .692 | T2nd Big10 West | 5-4 | .556 |
| Iowa | 2019 | 10-3 | .769 | 3rd Big10 West | 6-3 | .667 |
| Iowa | 2020 | 6-2 | .750 | 2nd Big10 West | 6-2 | .750 |
| Iowa | 2021 | 10-4 | .714 | 1st Big10 West | 7-2 | .778 |
| Iowa | 2022 | 8-5 | .615 | T2nd Big10 West | 5-4 | .556 |
| Iowa | 2023 | 10-4 | .714 | 1st Big10 West | 7-2 | .778 |
| Iowa | 2024 | 8-5 | .615 | 6th Big 10 | 6-3 | .667 |
| Iowa | 2025 | 9-4 | .692 | 6th Big 10 | 6-3 | .667 |