Waterloo May 12 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of May 12.
May 12 All-Time Records
1895–2024
Highest temperature 94 °F 2022
Lowest temperature 30 °F 1928
Lowest daily high 44 °F 1966
Highest daily low 72 °F 2022
Most precipitation 2.40 inches 2010
Most snow none -
May 12 Average Weather
1991–2020 1
Average high 69.8 °F
Average low 47.2 °F
Chance precipitation 41.6%
Chance snow 0.3%
Waterloo May 12 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 80 65 0.21 0.0
2022 94 72 0.00 0.0
2021 67 33 0.00 0.0
2020 63 31 0.00 0.0
2019 56 35 0.00 0.0
2018 54 45 0.02 0.0
2017 74 44 0.00 0.0
2016 62 46 0.00 0.0
2015 62 42 0.00 0.0
2014 74 48 1.21 0.0
2013 58 33 0.00 0.0
2012 71 48 0.00 0.0
2011 83 54 0.13 0.0
2010 50 44 2.40 0.0
2009 73 47 0.50 0.0
2008 65 33 0.00 0.0
2007 78 49 0.00 0.0
2006 46 39 0.40 0.0
2005 50 41 1.17 0.0
2004 80 60 0.04 0.0
2003 68 45 0.00 0.0
2002 52 45 0.00 0.0
2001 67 42 0.00 0.0
2000 73 50 0.01 0.0
1999 62 54 1.20 0.0
1998 76 55 0.21 0.0
1997 63 39 0.22 0.0
1996 57 36 0.00 0.0
1995 68 41 0.14 0.0
1994 75 45 0.00 0.0
1993 84 52 0.00 0.0
1992 77 50 0.00 0.0
1991 84 57 0.00 0.0
1990 56 43 0.27 0.0
1989 73 36 0.00 0.0
1988 83 48 0.00 0.0
1987 75 44 0.00 0.0
1986 78 61 0.00 0.0
1985 71 49 0.00 0.0
1984 73 42 0.00 0.0
1983 74 58 0.15 0.0
1982 83 62 0.73 0.0
1981 59 32 0.05 0.0
1980 69 37 0.17 0.0
1979 62 33 0.02 0.0
1978 72 51 0.74 0.0
1977 80 45 0.00 0.0
1976 73 45 0.00 0.0
1975 65 45 0.00 0.0
1974 58 39 0.00 0.0
1973 61 43 0.00 0.0
1972 76 49 0.00 0.0
1971 58 33 0.00 0.0
1970 77 60 1.16 0.0
1969 63 31 0.00 0.0
1968 69 36 0.00 0.0
1967 55 41 0.00 0.0
1966 44 39 0.24 0.0
1965 83 43 0.00 0.0
1964 58 49 1.21 0.0
1963 57 45 0.95 0.0
1962 79 56 0.18 0.0
1961 85 55 0.00 0.0
1960 68 33 0.00 0.0
1959 69 52 0.00 0.0
1958 83 48 0.00 0.0
1957 59 51 0.21 0.0
1956 86 58 0.00 0.0
1955 67 46 0.00 0.0
1954 69 42 0.00 0.0
1953 72 40 0.00 0.0
1952 61 41 0.07 0.0
1951 75 38 0.00 0.0
1950 80 53 0.06 0.0
1949 79 48 0.13 0.0
1948 54 46 0.00 0.0
1947 77 55 n/a 0.0
1946 56 34 0.00 0.0
1945 60 45 0.00 0.0
1944 83 59 0.00 0.0
1943 69 43 n/a 0.0
1942 76 53 0.18 0.0
1941 73 39 0.00 0.0
1940 88 52 0.00 0.0
1939 65 36 0.00 0.0
1938 63 34 0.00 0.0
1937 75 50 n/a 0.0
1936 76 54 n/a 0.0
1935 70 57 0.15 0.0
1934 69 49 n/a 0.0
1933 68 52 0.50 0.0
1932 78 42 0.00 0.0
1931 68 42 0.00 0.0
1930 65 52 0.00 0.0
1929 74 44 0.15 0.0
1928 68 30 0.00 0.0
1927 70 34 0.00 0.0
1926 77 39 0.00 0.0
1925 78 39 0.00 0.0
1924 75 44 n/a 0.0
1923 60 43 n/a 0.0
1922 74 49 n/a 0.0
1921 78 49 0.10 0.0
1920 56 43 0.98 0.0
1919 70 41 0.00 0.0
1918 64 41 0.00 0.0
1917 63 37 0.00 0.0
1916 69 47 0.00 0.0
1915 83 59 0.00 0.0
1914 55 37 0.05 0.0
1913 65 36 0.00 0.0
1912 57 43 0.43 0.0
1911 78 45 0.00 0.0
1910 62 37 0.00 0.0
1909 67 45 n/a 0.0
1908 68 52 n/a 0.0
1907 61 34 0.00 0.0
1906 85 58 0.00 0.0
1905 73 40 n/a 0.0
1904 82 45 n/a 0.0
1903 74 58 0.44 0.0
1902 82 48 n/a 0.0
1901 62 36 0.00 0.0
1900 89 65 0.00 0.0
1899 82 50 n/a 0.0
1898 72 35 0.00 0.0
1897 64 44 n/a 0.0
1896 85 58 n/a 0.0
1895 65 30 n/a 0.0
What's the all-time high for Waterloo on 5/12?
For the date of May 12, the highest temperature ever reached in Waterloo history is 94 °F which happened in 2022.
Highest Temperatures in Waterloo on May 12
Rank Temperature Year
1 94 °F 2022
2 89 °F 1900
3 88 °F 1940
4 86 °F 1956
5 85 °F 1896
5 85 °F 1961
5 85 °F 1906
8 84 °F 1991
8 84 °F 1993
10 83 °F 1944
10 83 °F 1958
10 83 °F 1988
10 83 °F 1982
10 83 °F 1915
10 83 °F 1965
10 83 °F 2011
What's the all-time low for Waterloo on 5/12?
For the date of May 12, the lowest temperature ever reached in Waterloo history is 30 °F which has happened 2 times, most recently in 1928.
Lowest Temperatures in Waterloo on May 12
Rank Temperature Year
1 30 °F 1895
1 30 °F 1928
3 31 °F 2020
3 31 °F 1969
5 32 °F 1981
6 33 °F 2021
6 33 °F 1971
6 33 °F 1979
6 33 °F 2008
6 33 °F 2013
6 33 °F 1960
Lowest High Temperatures in Waterloo on May 12
Rank Temperature Year
1 44 °F 1966
2 46 °F 2006
3 50 °F 2005
3 50 °F 2010
5 52 °F 2002
6 54 °F 1948
6 54 °F 2018
8 55 °F 1967
8 55 °F 1914
10 56 °F 1990
10 56 °F 2019
10 56 °F 1920
10 56 °F 1946
What's the most it has ever rained in Waterloo on 5/12?
For the date of May 12, the most precipitation ever recorded in Waterloo history is 2.40 inches which happened in 2010.
All-Time Most Precipitation in Waterloo on May 12
Rank Precipitation Year
1 2.40 inches 2010
2 1.21 inches 1964
2 1.21 inches 2014
4 1.20 inches 1999
5 1.17 inches 2005
6 1.16 inches 1970
7 0.98 inches 1920
8 0.95 inches 1963
9 0.74 inches 1978
10 0.73 inches 1982
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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