Waterloo June 21 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of June 21.
June 21 All-Time Records
1895–2024
Highest temperature 103 °F 1988
Lowest temperature 41 °F 1992
Lowest daily high 62 °F 1902
Highest daily low 76 °F 1988
Most precipitation 1.37 inches 2020
Most snow none -
June 21 Average Weather
1991–2020 1
Average high 82.2 °F
Average low 60.8 °F
Chance precipitation 37.1%
Chance snow 0%
Waterloo June 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 91 60 0.00 0.0
2022 95 66 0.00 0.0
2021 71 50 0.00 0.0
2020 87 61 1.37 0.0
2019 69 58 0.45 0.0
2018 67 57 0.29 0.0
2017 75 57 0.71 0.0
2016 85 57 0.40 0.0
2015 85 61 0.00 0.0
2014 87 68 0.02 0.0
2013 85 64 0.64 0.0
2012 79 59 0.00 0.0
2011 79 63 0.84 0.0
2010 81 64 0.00 0.0
2009 84 69 0.47 0.0
2008 84 59 0.02 0.0
2007 86 65 1.18 0.0
2006 81 60 0.82 0.0
2005 89 66 0.00 0.0
2004 75 55 0.19 0.0
2003 86 53 0.00 0.0
2002 89 70 0.00 0.0
2001 75 57 0.45 0.0
2000 80 58 0.00 0.0
1999 85 64 0.00 0.0
1998 81 63 0.00 0.0
1997 84 64 0.48 0.0
1996 91 68 0.28 0.0
1995 96 66 0.00 0.0
1994 87 65 0.00 0.0
1993 87 57 0.00 0.0
1992 71 41 0.00 0.0
1991 85 64 0.00 0.0
1990 75 58 0.15 0.0
1989 92 69 0.00 0.0
1988 103 76 0.00 0.0
1987 85 68 0.00 0.0
1986 89 69 1.19 0.0
1985 81 62 0.60 0.0
1984 83 66 0.67 0.0
1983 91 71 0.00 0.0
1982 79 49 0.00 0.0
1981 73 55 0.53 0.0
1980 82 59 0.00 0.0
1979 86 64 0.00 0.0
1978 75 51 0.00 0.0
1977 74 52 0.03 0.0
1976 83 51 0.00 0.0
1975 91 70 1.05 0.0
1974 88 68 0.00 0.0
1973 77 55 0.00 0.0
1972 68 43 0.00 0.0
1971 79 55 0.00 0.0
1970 74 51 0.00 0.0
1969 69 49 0.03 0.0
1968 86 60 0.00 0.0
1967 76 55 0.02 0.0
1966 90 69 0.00 0.0
1965 79 47 0.00 0.0
1964 85 65 0.04 0.0
1963 76 46 0.00 0.0
1962 83 54 0.00 0.0
1961 83 47 0.04 0.0
1960 67 59 0.00 0.0
1959 88 59 0.04 0.0
1958 74 50 0.00 0.0
1957 87 68 0.00 0.0
1956 92 70 0.00 0.0
1955 83 55 0.00 0.0
1954 87 66 0.71 0.0
1953 84 59 0.00 0.0
1952 75 55 0.50 0.0
1951 64 62 0.02 0.0
1950 n/a n/a n/a n/a
1949 85 67 0.92 0.0
1948 78 49 0.30 0.0
1947 72 59 n/a 0.0
1946 74 49 0.00 0.0
1945 79 51 0.00 0.0
1944 77 61 n/a 0.0
1943 99 73 n/a 0.0
1942 81 54 0.10 0.0
1941 94 68 0.00 0.0
1940 80 54 0.00 0.0
1939 77 68 n/a 0.0
1938 88 60 n/a 0.0
1937 89 60 1.36 0.0
1936 76 56 n/a 0.0
1935 68 54 0.38 0.0
1934 87 60 0.10 0.0
1933 94 71 n/a 0.0
1932 84 58 0.00 0.0
1931 90 69 n/a 0.0
1930 92 60 n/a 0.0
1929 89 54 0.00 0.0
1928 79 58 n/a 0.0
1927 80 64 n/a 0.0
1926 74 57 n/a 0.0
1925 89 56 n/a 0.0
1924 84 55 0.05 0.0
1923 91 71 0.00 0.0
1922 85 60 n/a 0.0
1921 91 64 0.00 0.0
1920 75 53 n/a 0.0
1919 83 68 n/a 0.0
1918 77 56 0.00 0.0
1917 79 57 n/a 0.0
1916 68 48 n/a 0.0
1915 70 58 0.00 0.0
1914 80 53 n/a 0.0
1913 80 65 n/a 0.0
1912 74 51 n/a 0.0
1911 90 66 0.00 0.0
1910 95 59 0.00 0.0
1909 87 67 n/a 0.0
1908 87 62 0.07 0.0
1907 82 62 n/a 0.0
1906 67 51 0.00 0.0
1905 81 56 0.08 0.0
1904 82 56 0.00 0.0
1903 68 49 n/a 0.0
1902 62 45 0.00 0.0
1901 86 63 0.43 0.0
1900 87 65 n/a 0.0
1899 86 60 0.69 0.0
1898 80 55 n/a 0.0
1897 77 57 n/a 0.0
1896 89 63 0.00 0.0
1895 92 53 0.00 0.0
What's the all-time high for Waterloo on 6/21?
For the date of Jun 21, the highest temperature ever reached in Waterloo history is 103 °F which happened in 1988.
Highest Temperatures in Waterloo on June 21
Rank Temperature Year
1 103 °F 1988
2 99 °F 1943
3 96 °F 1995
4 95 °F 2022
4 95 °F 1910
6 94 °F 1933
6 94 °F 1941
8 92 °F 1930
8 92 °F 1956
8 92 °F 1989
8 92 °F 1895
What's the all-time low for Waterloo on 6/21?
For the date of Jun 21, the lowest temperature ever reached in Waterloo history is 41 °F which happened in 1992.
Lowest Temperatures in Waterloo on June 21
Rank Temperature Year
1 41 °F 1992
2 43 °F 1972
3 45 °F 1902
4 46 °F 1963
5 47 °F 1961
5 47 °F 1965
7 48 °F 1916
8 49 °F 1903
8 49 °F 1948
8 49 °F 1982
8 49 °F 1969
8 49 °F 1946
Lowest High Temperatures in Waterloo on June 21
Rank Temperature Year
1 62 °F 1902
2 64 °F 1951
3 67 °F 1906
3 67 °F 1960
3 67 °F 2018
6 68 °F 1972
6 68 °F 1916
6 68 °F 1903
6 68 °F 1935
10 69 °F 1969
10 69 °F 2019
What's the most it has ever rained in Waterloo on 6/21?
For the date of Jun 21, the most precipitation ever recorded in Waterloo history is 1.37 inches which happened in 2020.
All-Time Most Precipitation in Waterloo on June 21
Rank Precipitation Year
1 1.37 inches 2020
2 1.36 inches 1937
3 1.19 inches 1986
4 1.18 inches 2007
5 1.05 inches 1975
6 0.92 inches 1949
7 0.84 inches 2011
8 0.82 inches 2006
9 0.71 inches 2017
9 0.71 inches 1954
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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