Waterloo July 20 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of July 20.
July 20 All-Time Records
1895–2024
Highest temperature 104 °F 1930
Lowest temperature 47 °F 1970
Lowest daily high 66 °F 1912
Highest daily low 77 °F 2011
Most precipitation 1.93 inches 1999
Most snow none -
July 20 Average Weather
1991–2020 1
Average high 84.0 °F
Average low 62.7 °F
Chance precipitation 28.1%
Chance snow 0%
Waterloo July 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 81 63 0.00 0.0
2022 87 68 0.00 0.0
2021 89 59 0.00 0.0
2020 80 65 0.00 0.0
2019 89 68 0.01 0.0
2018 77 64 0.03 0.0
2017 90 73 0.00 0.0
2016 86 68 0.00 0.0
2015 83 63 0.08 0.0
2014 84 65 0.00 0.0
2013 89 57 0.00 0.0
2012 90 56 0.00 0.0
2011 98 77 0.00 0.0
2010 84 60 0.00 0.0
2009 76 52 0.00 0.0
2008 86 64 0.00 0.0
2007 76 53 0.00 0.0
2006 86 67 0.01 0.0
2005 90 70 0.91 0.0
2004 91 65 0.00 0.0
2003 85 70 0.96 0.0
2002 93 75 0.00 0.0
2001 84 67 0.02 0.0
2000 75 55 0.00 0.0
1999 89 69 1.93 0.0
1998 98 65 0.00 0.0
1997 90 65 0.08 0.0
1996 72 59 0.00 0.0
1995 84 62 0.00 0.0
1994 79 62 0.00 0.0
1993 76 61 0.00 0.0
1992 75 53 0.00 0.0
1991 95 74 0.00 0.0
1990 80 63 1.36 0.0
1989 83 56 0.00 0.0
1988 82 56 0.11 0.0
1987 92 77 0.00 0.0
1986 81 61 0.00 0.0
1985 82 58 0.00 0.0
1984 85 63 0.00 0.0
1983 97 73 0.00 0.0
1982 86 71 0.00 0.0
1981 82 65 0.25 0.0
1980 88 68 0.00 0.0
1979 83 63 0.11 0.0
1978 79 67 0.21 0.0
1977 91 72 0.02 0.0
1976 91 69 0.08 0.0
1975 86 60 0.00 0.0
1974 88 69 0.00 0.0
1973 70 65 0.00 0.0
1972 90 73 0.00 0.0
1971 79 55 0.00 0.0
1970 71 47 0.00 0.0
1969 82 63 0.00 0.0
1968 81 58 0.00 0.0
1967 87 64 0.00 0.0
1966 78 57 0.00 0.0
1965 72 62 0.02 0.0
1964 90 72 0.00 0.0
1963 84 65 0.00 0.0
1962 83 67 0.28 0.0
1961 83 57 0.00 0.0
1960 89 60 0.00 0.0
1959 84 56 0.00 0.0
1958 76 56 0.00 0.0
1957 94 68 0.00 0.0
1956 73 59 0.00 0.0
1955 92 67 0.00 0.0
1954 87 71 0.00 0.0
1953 94 68 0.62 0.0
1952 90 75 0.00 0.0
1951 87 n/a 0.00 0.0
1950 71 60 0.65 0.0
1949 82 65 0.03 0.0
1948 88 69 0.13 0.0
1947 76 59 n/a 0.0
1946 86 60 0.00 0.0
1945 89 69 n/a 0.0
1944 72 51 0.01 0.0
1943 84 66 0.02 0.0
1942 86 62 0.00 0.0
1941 86 55 0.00 0.0
1940 98 74 n/a 0.0
1939 83 60 0.00 0.0
1938 82 60 0.00 0.0
1937 89 59 0.00 0.0
1936 84 64 0.00 0.0
1935 95 72 n/a 0.0
1934 102 73 0.00 0.0
1933 97 69 n/a 0.0
1932 99 70 0.00 0.0
1931 95 63 0.00 0.0
1930 104 73 n/a 0.0
1929 76 52 0.00 0.0
1928 83 67 0.50 0.0
1927 84 52 n/a 0.0
1926 103 74 0.00 0.0
1925 89 54 0.00 0.0
1924 84 53 0.05 0.0
1923 95 57 0.00 0.0
1922 84 58 0.00 0.0
1921 89 57 0.00 0.0
1920 88 61 n/a 0.0
1919 81 60 0.00 0.0
1918 92 63 0.00 0.0
1917 91 61 n/a 0.0
1916 91 65 0.82 0.0
1915 76 55 0.00 0.0
1914 88 57 0.00 0.0
1913 84 57 0.00 0.0
1912 66 55 n/a 0.0
1911 77 51 0.00 0.0
1910 86 58 0.00 0.0
1909 80 61 0.00 0.0
1908 80 57 0.00 0.0
1907 87 66 n/a 0.0
1906 78 60 0.00 0.0
1905 86 62 0.00 0.0
1904 86 62 0.00 0.0
1903 78 58 0.00 0.0
1902 70 56 0.25 0.0
1901 103 68 0.00 0.0
1900 75 55 0.05 0.0
1899 91 59 0.00 0.0
1898 81 57 0.00 0.0
1897 84 67 n/a 0.0
1896 85 62 n/a 0.0
1895 93 57 n/a 0.0
What's the all-time high for Waterloo on 7/20?
For the date of Jul 20, the highest temperature ever reached in Waterloo history is 104 °F which happened in 1930.
Highest Temperatures in Waterloo on July 20
Rank Temperature Year
1 104 °F 1930
2 103 °F 1926
2 103 °F 1901
4 102 °F 1934
5 99 °F 1932
6 98 °F 1940
6 98 °F 1998
6 98 °F 2011
9 97 °F 1933
9 97 °F 1983
What's the all-time low for Waterloo on 7/20?
For the date of Jul 20, the lowest temperature ever reached in Waterloo history is 47 °F which happened in 1970.
Lowest Temperatures in Waterloo on July 20
Rank Temperature Year
1 47 °F 1970
2 51 °F 1911
2 51 °F 1944
4 52 °F 1927
4 52 °F 2009
4 52 °F 1929
7 53 °F 1992
7 53 °F 1924
7 53 °F 2007
10 54 °F 1925
Lowest High Temperatures in Waterloo on July 20
Rank Temperature Year
1 66 °F 1912
2 70 °F 1902
2 70 °F 1973
4 71 °F 1970
4 71 °F 1950
6 72 °F 1996
6 72 °F 1944
6 72 °F 1965
9 73 °F 1956
10 75 °F 1992
10 75 °F 1900
10 75 °F 2000
What's the most it has ever rained in Waterloo on 7/20?
For the date of Jul 20, the most precipitation ever recorded in Waterloo history is 1.93 inches which happened in 1999.
All-Time Most Precipitation in Waterloo on July 20
Rank Precipitation Year
1 1.93 inches 1999
2 1.36 inches 1990
3 0.96 inches 2003
4 0.91 inches 2005
5 0.82 inches 1916
6 0.65 inches 1950
7 0.62 inches 1953
8 0.50 inches 1928
9 0.28 inches 1962
10 0.25 inches 1902
10 0.25 inches 1981
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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