Waterloo March 21 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of March 21.
March 21 All-Time Records
1895–2024
Highest temperature 83 °F 1938
Lowest temperature -5 °F 1951
Lowest daily high 19 °F 1951
Highest daily low 59 °F 2012
Most precipitation 0.50 inches 1993
Most snow 4.5 inches 1993
March 21 Average Weather
1991–2020 1
Average high 48.4 °F
Average low 28.1 °F
Chance precipitation 32.9%
Chance snow 7.9%
Waterloo March 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2024 42 29 0.01 0.1
2023 60 30 0.00 0.0
2022 75 47 0.00 0.0
2021 66 41 0.00 0.0
2020 40 25 0.00 0.0
2019 52 32 0.00 0.0
2018 44 20 0.00 0.0
2017 49 25 0.00 0.0
2016 56 22 0.00 0.0
2015 52 30 0.00 0.0
2014 55 30 0.00 0.0
2013 30 7 0.00 0.0
2012 70 59 0.08 0.0
2011 52 36 0.00 0.0
2010 51 22 0.00 0.0
2009 66 37 0.00 0.0
2008 37 30 0.04 0.0
2007 65 44 0.14 0.0
2006 37 21 0.00 0.0
2005 47 26 0.00 0.0
2004 37 20 0.00 0.0
2003 44 33 0.00 0.0
2002 30 12 0.01 0.2
2001 50 30 0.00 0.0
2000 51 39 0.00 0.0
1999 48 26 0.00 0.0
1998 46 21 0.00 0.0
1997 58 35 0.00 0.0
1996 44 15 0.00 0.0
1995 54 30 0.00 0.0
1994 58 33 0.00 0.0
1993 35 28 0.50 4.5
1992 36 28 0.10 0.3
1991 61 41 0.01 0.0
1990 68 32 0.00 0.0
1989 34 11 0.00 0.0
1988 46 22 0.00 0.0
1987 62 37 0.00 0.0
1986 45 20 0.00 0.0
1985 57 30 0.00 0.0
1984 35 31 0.00 0.0
1983 29 20 0.03 0.4
1982 37 29 0.00 0.0
1981 50 24 0.00 0.0
1980 41 25 0.00 0.0
1979 45 33 0.00 0.0
1978 55 32 0.00 0.0
1977 36 22 0.00 0.0
1976 35 23 0.00 0.0
1975 47 37 0.14 0.0
1974 35 8 0.00 0.0
1973 50 20 0.00 0.0
1972 49 37 0.26 0.0
1971 34 28 0.00 0.0
1970 40 17 0.00 0.0
1969 40 20 0.00 0.0
1968 33 18 0.00 0.0
1967 37 23 0.00 0.0
1966 57 32 0.04 0.0
1965 20 0 0.06 1.2
1964 32 24 0.00 0.0
1963 40 22 0.00 0.0
1962 37 23 0.00 0.0
1961 35 33 0.17 0.2
1960 37 3 0.00 0.0
1959 30 16 0.00 0.0
1958 44 20 0.00 0.0
1957 43 32 0.00 0.0
1956 39 31 0.04 0.3
1955 34 21 0.48 0.0
1954 44 17 0.00 0.0
1953 72 47 0.00 0.0
1952 38 32 0.00 0.0
1951 19 -5 0.00 0.0
1950 38 32 0.15 0.0
1949 51 41 0.00 0.0
1948 58 37 0.00 0.0
1947 36 29 n/a n/a
1946 66 45 0.00 0.0
1945 61 26 0.00 0.0
1944 42 23 n/a n/a
1943 32 12 0.00 0.0
1942 45 32 0.19 0.0
1941 41 31 0.00 0.0
1940 34 20 n/a n/a
1939 68 33 0.00 0.0
1938 83 50 n/a 0.0
1937 44 27 n/a n/a
1936 55 32 0.00 0.0
1935 64 33 n/a 0.0
1934 53 35 0.00 0.0
1933 35 20 0.02 0.0
1932 32 25 n/a n/a
1931 55 33 0.00 0.0
1930 38 18 0.00 0.0
1929 53 36 n/a 0.0
1928 69 26 0.00 0.0
1927 38 25 0.05 0.5
1926 54 34 0.00 0.0
1925 56 28 0.00 0.0
1924 43 29 0.00 0.0
1923 44 25 n/a n/a
1922 38 24 0.00 0.0
1921 47 26 0.00 0.0
1920 53 23 0.00 0.0
1919 44 25 0.00 0.0
1918 75 42 0.00 0.0
1917 46 28 0.00 0.0
1916 59 29 n/a n/a
1915 21 19 0.00 0.0
1914 39 16 0.00 0.0
1913 28 12 0.30 0.0
1912 22 12 n/a n/a
1911 69 45 n/a 0.0
1910 72 35 0.00 0.0
1909 40 23 0.00 0.0
1908 43 31 0.00 0.0
1907 53 36 0.00 0.0
1906 33 20 0.00 0.0
1905 34 29 n/a 0.0
1904 39 30 0.43 0.0
1903 50 22 n/a n/a
1902 47 34 0.03 0.0
1901 33 16 0.00 0.0
1900 45 9 0.00 0.0
1899 30 18 0.02 0.0
1898 63 25 n/a n/a
1897 45 31 0.00 0.0
1896 60 20 0.00 0.0
1895 42 20 0.00 0.0
What's the all-time high for Waterloo on 3/21?
For the date of Mar 21, the highest temperature ever reached in Waterloo history is 83 °F which happened in 1938.
Highest Temperatures in Waterloo on March 21
Rank Temperature Year
1 83 °F 1938
2 75 °F 1918
2 75 °F 2022
4 72 °F 1910
4 72 °F 1953
6 70 °F 2012
7 69 °F 1911
7 69 °F 1928
9 68 °F 1990
9 68 °F 1939
What's the all-time low for Waterloo on 3/21?
For the date of Mar 21, the lowest temperature ever reached in Waterloo history is -5 °F which happened in 1951.
Lowest Temperatures in Waterloo on March 21
Rank Temperature Year
1 -5 °F 1951
2 0 °F 1965
3 3 °F 1960
4 7 °F 2013
5 8 °F 1974
6 9 °F 1900
7 11 °F 1989
8 12 °F 1943
8 12 °F 2002
8 12 °F 1913
8 12 °F 1912
Lowest High Temperatures in Waterloo on March 21
Rank Temperature Year
1 19 °F 1951
2 20 °F 1965
3 21 °F 1915
4 22 °F 1912
5 28 °F 1913
6 29 °F 1983
7 30 °F 2002
7 30 °F 2013
7 30 °F 1959
7 30 °F 1899
What's the most it has ever rained in Waterloo on 3/21?
For the date of Mar 21, the most precipitation ever recorded in Waterloo history is 0.50 inches which happened in 1993.
All-Time Most Precipitation in Waterloo on March 21
Rank Precipitation Year
1 0.50 inches 1993
2 0.48 inches 1955
3 0.43 inches 1904
4 0.30 inches 1913
5 0.26 inches 1972
6 0.19 inches 1942
7 0.17 inches 1961
8 0.15 inches 1950
9 0.14 inches 2007
9 0.14 inches 1975
All-Time Most Snow in Waterloo on March 21
Rank Precipitation Year
1 4.5 inches 1993
2 1.2 inches 1965
3 0.5 inches 1927
4 0.4 inches 1983
5 0.3 inches 1956
5 0.3 inches 1992
7 0.2 inches 1961
7 0.2 inches 2002
9 0.1 inches 2024
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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