Waterloo August 18 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of August 18.
August 18 All-Time Records
1895–2024
Highest temperature 110 °F 1936
Lowest temperature 43 °F 2012
Lowest daily high 65 °F 1915
Highest daily low 75 °F 1947
Most precipitation 1.91 inches 1954
Most snow none -
August 18 Average Weather
1991–2020 1
Average high 81.4 °F
Average low 59.4 °F
Chance precipitation 28.5%
Chance snow 0%
Waterloo August 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 82 48 0.00 0.0
2022 85 60 0.14 0.0
2021 91 62 0.00 0.0
2020 82 53 0.00 0.0
2019 82 63 0.49 0.0
2018 85 60 0.00 0.0
2017 79 57 0.00 0.0
2016 89 64 0.00 0.0
2015 69 60 0.59 0.0
2014 88 64 0.35 0.0
2013 79 51 0.00 0.0
2012 77 43 0.00 0.0
2011 85 52 0.00 0.0
2010 81 58 0.00 0.0
2009 77 58 0.00 0.0
2008 87 57 0.00 0.0
2007 74 58 1.14 0.0
2006 81 65 0.00 0.0
2005 86 65 1.41 0.0
2004 76 53 0.09 0.0
2003 93 68 0.00 0.0
2002 75 46 0.00 0.0
2001 70 57 0.69 0.0
2000 76 54 0.00 0.0
1999 75 63 1.12 0.0
1998 78 65 0.00 0.0
1997 71 58 0.02 0.0
1996 76 57 0.04 0.0
1995 93 73 0.00 0.0
1994 88 65 1.44 0.0
1993 78 68 1.29 0.0
1992 76 54 0.00 0.0
1991 78 56 0.00 0.0
1990 90 69 0.58 0.0
1989 83 51 0.00 0.0
1988 93 71 0.00 0.0
1987 79 59 0.65 0.0
1986 82 59 0.00 0.0
1985 73 52 0.00 0.0
1984 82 59 0.00 0.0
1983 98 67 0.00 0.0
1982 86 63 0.00 0.0
1981 72 46 0.00 0.0
1980 85 54 0.00 0.0
1979 84 70 0.01 0.0
1978 85 63 0.00 0.0
1977 71 43 0.02 0.0
1976 89 62 0.00 0.0
1975 78 60 0.00 0.0
1974 84 52 0.00 0.0
1973 92 69 0.00 0.0
1972 92 71 0.00 0.0
1971 85 54 0.00 0.0
1970 83 65 0.14 0.0
1969 85 61 0.00 0.0
1968 75 57 0.03 0.0
1967 68 56 0.00 0.0
1966 77 52 0.00 0.0
1965 80 63 1.05 0.0
1964 87 54 0.00 0.0
1963 69 47 0.00 0.0
1962 82 52 0.00 0.0
1961 88 66 0.04 0.0
1960 80 67 0.56 0.0
1959 87 60 0.00 0.0
1958 83 53 0.00 0.0
1957 80 59 0.19 0.0
1956 71 54 0.15 0.0
1955 95 71 0.00 0.0
1954 79 62 1.91 0.0
1953 80 47 0.00 0.0
1952 84 49 0.00 0.0
1951 75 48 0.00 0.0
1950 n/a 53 0.00 0.0
1949 80 64 0.00 0.0
1948 87 61 0.00 0.0
1947 97 75 0.00 0.0
1946 81 59 0.02 0.0
1945 88 64 0.04 0.0
1944 79 52 0.00 0.0
1943 76 46 0.00 0.0
1942 81 60 n/a 0.0
1941 79 57 0.23 0.0
1940 75 60 0.00 0.0
1939 86 60 n/a 0.0
1938 84 59 0.00 0.0
1937 82 63 n/a 0.0
1936 110 72 n/a 0.0
1935 91 74 n/a 0.0
1934 93 68 0.00 0.0
1933 76 47 0.00 0.0
1932 73 54 0.00 0.0
1931 93 69 0.00 0.0
1930 82 54 0.00 0.0
1929 84 53 0.00 0.0
1928 82 53 0.00 0.0
1927 72 53 0.00 0.0
1926 84 63 0.00 0.0
1925 94 64 n/a 0.0
1924 67 55 0.00 0.0
1923 87 53 0.00 0.0
1922 88 64 0.00 0.0
1921 85 57 0.00 0.0
1920 90 60 n/a 0.0
1919 85 57 n/a 0.0
1918 80 62 0.60 0.0
1917 85 55 0.00 0.0
1916 98 70 0.00 0.0
1915 65 55 0.00 0.0
1914 97 72 n/a 0.0
1913 95 68 0.00 0.0
1912 86 66 0.03 0.0
1911 83 64 0.01 0.0
1910 72 65 1.27 0.0
1909 88 64 0.00 0.0
1908 81 51 0.00 0.0
1907 87 67 n/a 0.0
1906 90 68 0.05 0.0
1905 84 62 0.00 0.0
1904 82 56 n/a 0.0
1903 83 54 n/a 0.0
1902 86 64 0.70 0.0
1901 94 59 0.00 0.0
1900 95 70 0.00 0.0
1899 94 61 0.00 0.0
1898 82 60 0.00 0.0
1897 79 49 0.12 0.0
1896 74 54 0.00 0.0
1895 79 50 0.00 0.0
What's the all-time high for Waterloo on 8/18?
For the date of Aug 18, the highest temperature ever reached in Waterloo history is 110 °F which happened in 1936.
Highest Temperatures in Waterloo on August 18
Rank Temperature Year
1 110 °F 1936
2 98 °F 1916
2 98 °F 1983
4 97 °F 1947
4 97 °F 1914
6 95 °F 1913
6 95 °F 1955
6 95 °F 1900
9 94 °F 1901
9 94 °F 1899
9 94 °F 1925
What's the all-time low for Waterloo on 8/18?
For the date of Aug 18, the lowest temperature ever reached in Waterloo history is 43 °F which has happened 2 times, most recently in 2012.
Lowest Temperatures in Waterloo on August 18
Rank Temperature Year
1 43 °F 2012
1 43 °F 1977
3 46 °F 2002
3 46 °F 1943
3 46 °F 1981
6 47 °F 1963
6 47 °F 1933
6 47 °F 1953
9 48 °F 1951
9 48 °F 2023
Lowest High Temperatures in Waterloo on August 18
Rank Temperature Year
1 65 °F 1915
2 67 °F 1924
3 68 °F 1967
4 69 °F 2015
4 69 °F 1963
6 70 °F 2001
7 71 °F 1997
7 71 °F 1956
7 71 °F 1977
10 72 °F 1927
10 72 °F 1981
10 72 °F 1910
What's the most it has ever rained in Waterloo on 8/18?
For the date of Aug 18, the most precipitation ever recorded in Waterloo history is 1.91 inches which happened in 1954.
All-Time Most Precipitation in Waterloo on August 18
Rank Precipitation Year
1 1.91 inches 1954
2 1.44 inches 1994
3 1.41 inches 2005
4 1.29 inches 1993
5 1.27 inches 1910
6 1.14 inches 2007
7 1.12 inches 1999
8 1.05 inches 1965
9 0.70 inches 1902
10 0.69 inches 2001
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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