Waterloo July 21 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of July 21.
July 21 All-Time Records
1895–2024
Highest temperature 106 °F 1901
Lowest temperature 46 °F 1944
Lowest daily high 68 °F 1973
Highest daily low 76 °F 1983
Most precipitation 1.57 inches 2001
Most snow none -
July 21 Average Weather
1991–2020 1
Average high 83.9 °F
Average low 62.6 °F
Chance precipitation 28.0%
Chance snow 0%
Waterloo July 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 83 58 0.00 0.0
2022 88 61 0.00 0.0
2021 91 66 0.00 0.0
2020 83 64 0.44 0.0
2019 83 67 0.00 0.0
2018 80 62 0.00 0.0
2017 77 69 0.34 0.0
2016 93 75 0.00 0.0
2015 80 56 0.00 0.0
2014 89 68 0.00 0.0
2013 87 63 0.00 0.0
2012 88 63 0.00 0.0
2011 81 67 0.14 0.0
2010 87 64 0.00 0.0
2009 72 58 0.10 0.0
2008 84 66 0.29 0.0
2007 78 52 0.00 0.0
2006 74 61 0.00 0.0
2005 87 71 0.19 0.0
2004 88 70 0.31 0.0
2003 80 64 n/a 0.0
2002 96 73 0.09 0.0
2001 88 69 1.57 0.0
2000 76 49 0.00 0.0
1999 88 70 0.01 0.0
1998 87 69 0.00 0.0
1997 82 69 0.02 0.0
1996 76 65 0.00 0.0
1995 85 56 0.00 0.0
1994 77 62 0.00 0.0
1993 79 56 0.00 0.0
1992 73 47 0.00 0.0
1991 91 75 0.03 0.0
1990 76 60 0.00 0.0
1989 78 57 0.00 0.0
1988 83 51 0.00 0.0
1987 89 73 0.00 0.0
1986 81 58 0.00 0.0
1985 86 61 0.00 0.0
1984 88 63 0.00 0.0
1983 98 76 0.00 0.0
1982 83 66 0.00 0.0
1981 78 61 0.00 0.0
1980 84 62 0.00 0.0
1979 83 66 0.00 0.0
1978 82 66 0.60 0.0
1977 80 64 0.02 0.0
1976 84 66 0.00 0.0
1975 88 55 0.00 0.0
1974 90 66 1.24 0.0
1973 68 64 0.86 0.0
1972 90 72 0.00 0.0
1971 85 57 0.00 0.0
1970 77 47 0.00 0.0
1969 81 59 0.00 0.0
1968 89 65 0.23 0.0
1967 88 67 0.00 0.0
1966 81 56 0.00 0.0
1965 84 64 0.01 0.0
1964 93 71 0.00 0.0
1963 87 60 0.00 0.0
1962 83 61 0.00 0.0
1961 73 65 0.62 0.0
1960 92 68 0.00 0.0
1959 87 64 0.00 0.0
1958 77 53 0.00 0.0
1957 92 71 0.13 0.0
1956 71 56 0.00 0.0
1955 92 71 0.00 0.0
1954 79 66 0.12 0.0
1953 85 67 0.00 0.0
1952 94 69 0.00 0.0
1951 84 70 1.40 0.0
1950 75 61 0.00 0.0
1949 86 71 0.10 0.0
1948 88 68 0.00 0.0
1947 69 49 0.00 0.0
1946 80 59 0.00 0.0
1945 90 72 0.25 0.0
1944 79 46 0.00 0.0
1943 86 68 0.00 0.0
1942 81 61 0.00 0.0
1941 90 60 0.00 0.0
1940 95 68 n/a 0.0
1939 83 60 0.00 0.0
1938 78 60 n/a 0.0
1937 96 64 0.00 0.0
1936 92 55 0.00 0.0
1935 97 72 n/a 0.0
1934 103 72 0.00 0.0
1933 89 68 n/a 0.0
1932 97 74 0.00 0.0
1931 95 62 0.00 0.0
1930 85 69 n/a 0.0
1929 85 62 0.00 0.0
1928 85 69 0.03 0.0
1927 86 67 n/a 0.0
1926 95 70 0.00 0.0
1925 81 53 0.00 0.0
1924 83 69 1.37 0.0
1923 100 64 n/a 0.0
1922 83 64 n/a 0.0
1921 90 51 0.00 0.0
1920 91 68 n/a 0.0
1919 83 65 0.00 0.0
1918 96 66 0.00 0.0
1917 94 68 n/a 0.0
1916 87 58 0.00 0.0
1915 75 55 0.00 0.0
1914 93 65 0.00 0.0
1913 78 54 0.00 0.0
1912 80 59 1.00 0.0
1911 87 57 0.00 0.0
1910 88 62 n/a 0.0
1909 90 63 0.00 0.0
1908 86 61 0.00 0.0
1907 86 69 n/a 0.0
1906 88 62 0.00 0.0
1905 85 61 0.00 0.0
1904 80 56 n/a 0.0
1903 81 58 0.00 0.0
1902 81 53 0.00 0.0
1901 106 74 0.00 0.0
1900 78 52 0.00 0.0
1899 92 66 0.00 0.0
1898 87 53 0.00 0.0
1897 85 58 0.00 0.0
1896 90 54 n/a 0.0
1895 83 64 0.00 0.0
What's the all-time high for Waterloo on 7/21?
For the date of Jul 21, the highest temperature ever reached in Waterloo history is 106 °F which happened in 1901.
Highest Temperatures in Waterloo on July 21
Rank Temperature Year
1 106 °F 1901
2 103 °F 1934
3 100 °F 1923
4 98 °F 1983
5 97 °F 1932
5 97 °F 1935
7 96 °F 2002
7 96 °F 1937
7 96 °F 1918
10 95 °F 1931
10 95 °F 1940
10 95 °F 1926
What's the all-time low for Waterloo on 7/21?
For the date of Jul 21, the lowest temperature ever reached in Waterloo history is 46 °F which happened in 1944.
Lowest Temperatures in Waterloo on July 21
Rank Temperature Year
1 46 °F 1944
2 47 °F 1970
2 47 °F 1992
4 49 °F 2000
4 49 °F 1947
6 51 °F 1988
6 51 °F 1921
8 52 °F 1900
8 52 °F 2007
10 53 °F 1902
10 53 °F 1925
10 53 °F 1958
10 53 °F 1898
Lowest High Temperatures in Waterloo on July 21
Rank Temperature Year
1 68 °F 1973
2 69 °F 1947
3 71 °F 1956
4 72 °F 2009
5 73 °F 1961
5 73 °F 1992
7 74 °F 2006
8 75 °F 1915
8 75 °F 1950
10 76 °F 2000
10 76 °F 1990
10 76 °F 1996
What's the most it has ever rained in Waterloo on 7/21?
For the date of Jul 21, the most precipitation ever recorded in Waterloo history is 1.57 inches which happened in 2001.
All-Time Most Precipitation in Waterloo on July 21
Rank Precipitation Year
1 1.57 inches 2001
2 1.40 inches 1951
3 1.37 inches 1924
4 1.24 inches 1974
5 1.00 inches 1912
6 0.86 inches 1973
7 0.62 inches 1961
8 0.60 inches 1978
9 0.44 inches 2020
10 0.34 inches 2017
Weather Station Details
Years Station Coordinates
1950–2024 Waterloo Municipal Airport location
1895–1950 Waterloo location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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