Waterloo July 18 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of July 18.
July 18 All-Time Records
1895–2024
Highest temperature 102 °F 1940
Lowest temperature 49 °F 1914
Lowest daily high 69 °F 2009
Highest daily low 79 °F 2011
Most precipitation 2.78 inches 1903
Most snow none -
July 18 Average Weather
1991–2020 1
Average high 84.0 °F
Average low 62.7 °F
Chance precipitation 29.2%
Chance snow 0%
Waterloo July 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 80 54 0.00 0.0
2022 90 63 0.00 0.0
2021 85 58 0.00 0.0
2020 93 76 0.00 0.0
2019 93 73 0.31 0.0
2018 83 60 0.00 0.0
2017 88 68 0.00 0.0
2016 85 65 0.00 0.0
2015 89 70 0.00 0.0
2014 79 55 0.00 0.0
2013 95 74 0.00 0.0
2012 99 69 0.00 0.0
2011 97 79 0.00 0.0
2010 85 66 0.00 0.0
2009 69 52 0.00 0.0
2008 82 65 0.09 0.0
2007 86 68 1.17 0.0
2006 86 61 0.00 0.0
2005 83 67 0.30 0.0
2004 80 55 0.00 0.0
2003 82 62 0.00 0.0
2002 91 69 0.00 0.0
2001 91 73 0.00 0.0
2000 70 53 0.00 0.0
1999 90 66 0.39 0.0
1998 88 65 0.00 0.0
1997 85 72 0.00 0.0
1996 91 75 0.00 0.0
1995 83 60 0.00 0.0
1994 85 62 0.40 0.0
1993 83 70 0.25 0.0
1992 80 56 0.08 0.0
1991 96 70 0.00 0.0
1990 85 65 0.09 0.0
1989 78 64 1.45 0.0
1988 89 64 0.00 0.0
1987 88 69 0.28 0.0
1986 93 75 0.00 0.0
1985 89 69 0.39 0.0
1984 77 50 0.00 0.0
1983 85 69 0.17 0.0
1982 81 70 0.57 0.0
1981 86 69 0.00 0.0
1980 90 70 0.05 0.0
1979 78 52 0.00 0.0
1978 87 72 0.81 0.0
1977 88 69 1.38 0.0
1976 90 55 0.00 0.0
1975 93 73 0.00 0.0
1974 94 75 0.00 0.0
1973 90 66 0.00 0.0
1972 78 60 0.00 0.0
1971 78 60 0.43 0.0
1970 83 66 1.00 0.0
1969 77 69 1.92 0.0
1968 85 65 0.00 0.0
1967 85 62 0.00 0.0
1966 95 72 0.00 0.0
1965 83 62 0.00 0.0
1964 95 73 0.00 0.0
1963 86 67 1.53 0.0
1962 81 56 0.00 0.0
1961 85 64 0.45 0.0
1960 86 65 0.01 0.0
1959 83 62 0.00 0.0
1958 78 58 0.00 0.0
1957 95 74 0.00 0.0
1956 83 59 0.10 0.0
1955 88 65 0.00 0.0
1954 89 70 0.06 0.0
1953 88 65 0.00 0.0
1952 85 73 0.00 0.0
1951 86 68 0.43 0.0
1950 80 52 0.00 0.0
1949 86 66 0.20 0.0
1948 81 58 0.00 0.0
1947 73 62 n/a 0.0
1946 94 72 n/a 0.0
1945 83 55 0.00 0.0
1944 n/a n/a n/a n/a
1943 85 59 n/a 0.0
1942 94 75 n/a 0.0
1941 75 63 n/a 0.0
1940 102 67 0.00 0.0
1939 75 64 0.07 0.0
1938 91 59 0.00 0.0
1937 83 53 0.00 0.0
1936 98 72 n/a 0.0
1935 100 70 0.00 0.0
1934 90 71 0.00 0.0
1933 90 58 0.00 0.0
1932 96 60 0.00 0.0
1931 99 70 0.00 0.0
1930 96 69 0.00 0.0
1929 85 59 0.00 0.0
1928 86 70 n/a 0.0
1927 90 52 n/a 0.0
1926 96 65 0.00 0.0
1925 83 50 n/a 0.0
1924 77 53 n/a 0.0
1923 90 56 0.00 0.0
1922 80 52 0.00 0.0
1921 91 75 0.00 0.0
1920 77 65 0.78 0.0
1919 87 57 0.00 0.0
1918 78 55 0.00 0.0
1917 85 55 0.00 0.0
1916 101 69 0.00 0.0
1915 86 62 n/a 0.0
1914 81 49 0.00 0.0
1913 91 65 n/a 0.0
1912 86 60 0.00 0.0
1911 79 51 0.00 0.0
1910 81 54 0.00 0.0
1909 89 64 0.00 0.0
1908 91 63 0.12 0.0
1907 84 63 n/a 0.0
1906 80 53 n/a 0.0
1905 98 72 2.43 0.0
1904 98 72 n/a 0.0
1903 76 60 2.78 0.0
1902 70 63 0.84 0.0
1901 96 68 0.00 0.0
1900 79 52 n/a 0.0
1899 88 55 0.00 0.0
1898 94 69 0.00 0.0
1897 90 61 0.00 0.0
1896 74 61 n/a 0.0
1895 97 69 n/a 0.0
What's the all-time high for Waterloo on 7/18?
For the date of Jul 18, the highest temperature ever reached in Waterloo history is 102 °F which happened in 1940.
Highest Temperatures in Waterloo on July 18
Rank Temperature Year
1 102 °F 1940
2 101 °F 1916
3 100 °F 1935
4 99 °F 2012
4 99 °F 1931
6 98 °F 1905
6 98 °F 1936
6 98 °F 1904
9 97 °F 2011
9 97 °F 1895
What's the all-time low for Waterloo on 7/18?
For the date of Jul 18, the lowest temperature ever reached in Waterloo history is 49 °F which happened in 1914.
Lowest Temperatures in Waterloo on July 18
Rank Temperature Year
1 49 °F 1914
2 50 °F 1925
2 50 °F 1984
4 51 °F 1911
5 52 °F 1927
5 52 °F 1950
5 52 °F 1900
5 52 °F 1922
5 52 °F 2009
5 52 °F 1979
Lowest High Temperatures in Waterloo on July 18
Rank Temperature Year
1 69 °F 2009
2 70 °F 1902
2 70 °F 2000
4 73 °F 1947
5 74 °F 1896
6 75 °F 1939
6 75 °F 1941
8 76 °F 1903
9 77 °F 1969
9 77 °F 1924
9 77 °F 1920
9 77 °F 1984
What's the most it has ever rained in Waterloo on 7/18?
For the date of Jul 18, the most precipitation ever recorded in Waterloo history is 2.78 inches which happened in 1903.
All-Time Most Precipitation in Waterloo on July 18
Rank Precipitation Year
1 2.78 inches 1903
2 2.43 inches 1905
3 1.92 inches 1969
4 1.53 inches 1963
5 1.45 inches 1989
6 1.38 inches 1977
7 1.17 inches 2007
8 1.00 inches 1970
9 0.84 inches 1902
10 0.81 inches 1978
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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