Waterloo May 1 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of May 1.
May 1 All-Time Records
1895–2024
Highest temperature 93 °F 2021
Lowest temperature 27 °F 1918
Lowest daily high 40 °F 1909
Highest daily low 65 °F 1992
Most precipitation 1.25 inches 1911
Most snow 0.8 inches 1909
May 1 Average Weather
1991–2020 1
Average high 65.7 °F
Average low 42.8 °F
Chance precipitation 40.7%
Chance snow 0.9%
Waterloo May 1 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 62 40 0.00 0.0
2022 51 45 0.00 0.0
2021 93 56 0.00 0.0
2020 80 36 0.00 0.0
2019 54 43 0.10 0.0
2018 73 57 0.40 0.0
2017 49 39 0.32 0.0
2016 49 43 0.16 0.0
2015 67 34 0.00 0.0
2014 50 40 0.07 0.0
2013 58 39 0.00 0.0
2012 69 46 0.01 0.0
2011 59 35 0.00 0.0
2010 69 50 0.00 0.0
2009 61 45 0.00 0.0
2008 68 48 0.00 0.0
2007 77 48 0.00 0.0
2006 57 49 0.18 0.0
2005 45 36 0.00 0.0
2004 60 38 0.00 0.0
2003 69 49 0.01 0.0
2002 57 38 0.43 0.0
2001 83 56 0.06 0.0
2000 78 52 0.02 0.0
1999 73 37 0.00 0.0
1998 80 45 0.00 0.0
1997 59 34 0.00 0.0
1996 62 36 0.00 0.0
1995 56 40 0.00 0.0
1994 58 32 0.00 0.0
1993 63 53 0.71 0.0
1992 89 65 0.00 0.0
1991 56 37 0.00 0.0
1990 61 33 0.00 0.0
1989 54 35 0.00 0.0
1988 77 42 0.00 0.0
1987 79 42 0.00 0.0
1986 57 38 0.00 0.0
1985 70 46 0.00 0.0
1984 58 35 0.00 0.0
1983 55 43 0.60 0.0
1982 73 36 0.00 0.0
1981 55 37 0.00 0.0
1980 75 44 0.00 0.0
1979 58 32 0.00 0.0
1978 56 31 0.00 0.0
1977 73 53 0.00 0.0
1976 62 36 0.00 0.0
1975 67 38 0.00 0.0
1974 72 36 0.00 0.0
1973 67 52 0.56 0.0
1972 61 48 0.17 0.0
1971 56 32 0.05 0.0
1970 46 34 0.07 0.0
1969 75 51 0.00 0.0
1968 75 44 0.00 0.0
1967 56 37 0.00 0.0
1966 52 28 0.00 0.0
1965 82 48 0.00 0.0
1964 53 43 0.03 0.0
1963 64 29 0.00 0.0
1962 68 45 0.00 0.0
1961 55 30 0.00 0.0
1960 66 33 0.11 0.0
1959 82 51 0.00 0.0
1958 66 44 0.00 0.0
1957 82 47 0.00 0.0
1956 48 40 0.58 0.0
1955 80 51 0.00 0.0
1954 62 43 1.19 0.0
1953 56 48 0.50 0.0
1952 85 52 0.00 0.0
1951 83 57 0.00 0.0
1950 51 32 0.00 0.0
1949 70 49 0.05 0.0
1948 64 48 n/a 0.0
1947 60 47 0.40 0.0
1946 72 50 n/a 0.0
1945 51 33 n/a 0.0
1944 77 55 0.05 0.0
1943 59 30 n/a 0.0
1942 76 58 0.19 0.0
1941 77 57 0.00 0.0
1940 43 32 0.05 0.0
1939 73 39 0.00 0.0
1938 80 51 0.00 0.0
1937 63 43 n/a 0.0
1936 80 57 n/a 0.0
1935 53 43 0.16 0.0
1934 84 54 0.00 0.0
1933 63 52 n/a 0.0
1932 60 42 0.00 0.0
1931 78 40 0.00 0.0
1930 80 61 0.74 0.0
1929 65 41 0.28 0.0
1928 77 39 0.00 0.0
1927 73 43 0.00 0.0
1926 86 49 n/a 0.0
1925 61 33 0.00 0.0
1924 68 34 0.00 0.0
1923 84 53 0.00 0.0
1922 70 50 n/a 0.0
1921 60 44 n/a 0.0
1920 63 35 0.00 0.0
1919 58 44 0.20 0.0
1918 56 27 0.00 0.0
1917 42 37 n/a 0.0
1916 46 39 0.60 0.0
1915 68 43 n/a 0.0
1914 47 41 0.00 0.0
1913 86 53 0.00 0.0
1912 63 39 0.00 0.0
1911 67 34 1.25 n/a
1910 61 42 n/a 0.0
1909 40 28 0.07 0.8
1908 53 35 n/a 0.0
1907 53 29 0.00 0.0
1906 57 44 n/a 0.0
1905 58 43 n/a 0.0
1904 74 47 0.00 0.0
1903 46 30 0.02 0.0
1902 72 48 n/a 0.0
1901 87 60 0.00 0.0
1900 79 45 0.00 0.0
1899 63 47 n/a 0.0
1898 70 54 0.00 0.0
1897 59 30 0.00 0.0
1896 68 52 0.67 0.0
1895 85 62 0.50 0.0
What's the all-time high for Waterloo on 5/1?
For the date of May 1, the highest temperature ever reached in Waterloo history is 93 °F which happened in 2021.
Highest Temperatures in Waterloo on May 1
Rank Temperature Year
1 93 °F 2021
2 89 °F 1992
3 87 °F 1901
4 86 °F 1926
4 86 °F 1913
6 85 °F 1952
6 85 °F 1895
8 84 °F 1923
8 84 °F 1934
10 83 °F 1951
10 83 °F 2001
What's the all-time low for Waterloo on 5/1?
For the date of May 1, the lowest temperature ever reached in Waterloo history is 27 °F which happened in 1918.
Lowest Temperatures in Waterloo on May 1
Rank Temperature Year
1 27 °F 1918
2 28 °F 1909
2 28 °F 1966
4 29 °F 1907
4 29 °F 1963
6 30 °F 1961
6 30 °F 1903
6 30 °F 1897
6 30 °F 1943
10 31 °F 1978
Lowest High Temperatures in Waterloo on May 1
Rank Temperature Year
1 40 °F 1909
2 42 °F 1917
3 43 °F 1940
4 45 °F 2005
5 46 °F 1903
5 46 °F 1916
5 46 °F 1970
8 47 °F 1914
9 48 °F 1956
10 49 °F 2017
10 49 °F 2016
What's the most it has ever rained in Waterloo on 5/1?
For the date of May 1, the most precipitation ever recorded in Waterloo history is 1.25 inches which happened in 1911.
All-Time Most Precipitation in Waterloo on May 1
Rank Precipitation Year
1 1.25 inches 1911
2 1.19 inches 1954
3 0.74 inches 1930
4 0.71 inches 1993
5 0.67 inches 1896
6 0.60 inches 1983
6 0.60 inches 1916
8 0.58 inches 1956
9 0.56 inches 1973
10 0.50 inches 1953
10 0.50 inches 1895
All-Time Most Snow in Waterloo on May 1
Rank Precipitation Year
1 0.8 inches 1909
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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