Cedar Rapids August 21 Weather Records

Daily averages and all-time records for weather in Cedar Rapids, Iowa for the date of August 21.
August 21 All-Time Records
1892–2024
Highest temperature 100 °F 1916
Lowest temperature 45 °F 2004
Lowest daily high 69 °F 1990
Highest daily low 74 °F 1983
Most precipitation 2.36 inches 1987
Most snow none -
August 21 Average Weather
1991–2020 1
Average high 82.7 °F
Average low 61.4 °F
Chance precipitation 30.3%
Chance snow 0%
Cedar Rapids August 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 93 72 0.00 0.0
2022 79 60 0.00 0.0
2021 87 69 0.51 0.0
2020 87 57 0.00 0.0
2019 83 65 0.00 0.0
2018 73 61 0.42 0.0
2017 80 65 0.27 0.0
2016 78 54 0.00 0.0
2015 80 56 0.00 0.0
2014 79 68 0.14 0.0
2013 90 69 0.00 0.0
2012 81 46 0.00 0.0
2011 83 61 0.00 0.0
2010 87 71 0.00 0.0
2009 72 59 0.24 0.0
2008 82 65 0.46 0.0
2007 90 69 0.59 0.0
2006 80 58 0.00 0.0
2005 80 59 0.00 0.0
2004 74 45 0.00 0.0
2003 93 73 0.00 0.0
2002 89 66 0.00 0.0
2001 78 60 0.00 0.0
2000 79 59 0.00 0.0
1999 78 59 0.01 0.0
1998 87 68 0.00 0.0
1997 75 53 0.04 0.0
1996 89 68 0.00 0.0
1995 89 58 0.00 0.0
1994 76 54 0.00 0.0
1993 78 58 0.00 0.0
1992 80 52 0.00 0.0
1991 86 61 0.09 0.0
1990 69 62 0.40 0.0
1989 86 61 0.00 0.0
1988 84 62 0.00 0.0
1987 93 64 2.36 0.0
1986 77 63 0.00 0.0
1985 81 53 0.00 0.0
1984 78 59 0.03 0.0
1983 94 74 0.02 0.0
1982 82 55 0.00 0.0
1981 77 53 0.00 0.0
1980 87 64 0.05 0.0
1979 82 65 0.01 0.0
1978 73 56 0.32 0.0
1977 77 58 0.24 0.0
1976 88 60 0.00 0.0
1975 94 70 0.00 0.0
1974 87 70 0.00 0.0
1973 80 53 0.16 0.0
1972 88 73 0.00 0.0
1971 85 63 0.00 0.0
1970 81 48 0.00 0.0
1969 78 58 0.00 0.0
1968 92 73 0.00 0.0
1967 82 56 0.00 0.0
1966 76 66 0.58 0.0
1965 71 63 0.05 0.0
1964 80 62 0.79 0.0
1963 84 59 0.00 0.0
1962 88 56 0.00 0.0
1961 77 53 0.00 0.0
1960 85 61 0.00 0.0
1959 94 72 0.00 0.0
1958 77 56 0.00 0.0
1957 83 59 0.00 0.0
1956 77 46 0.00 0.0
1955 96 69 0.00 0.0
1954 82 60 0.00 0.0
1953 83 52 0.00 0.0
1952 79 61 0.10 0.0
1951 74 55 1.08 0.0
1950 80 45 0.00 0.0
1949 80 48 0.00 0.0
1948 88 68 0.00 0.0
1947 98 73 0.00 0.0
1946 84 62 0.00 0.0
1945 80 63 0.02 0.0
1944 85 65 0.00 0.0
1943 82 60 0.00 0.0
1942 91 68 0.00 0.0
1941 74 62 0.00 0.0
1940 79 47 0.00 0.0
1939 76 55 0.36 0.0
1938 84 57 0.22 0.0
1937 82 63 0.34 0.0
1936 98 70 0.01 0.0
1935 80 55 0.00 0.0
1934 80 53 0.00 0.0
1933 79 62 0.00 0.0
1932 81 54 0.00 0.0
1931 86 51 0.00 0.0
1930 82 56 0.00 0.0
1929 85 62 0.00 0.0
1928 81 63 0.40 0.0
1927 80 47 0.00 0.0
1926 90 59 0.00 0.0
1925 80 46 0.00 0.0
1924 97 66 0.00 0.0
1923 81 68 0.00 0.0
1922 86 68 0.30 0.0
1921 76 53 0.00 0.0
1920 75 55 1.50 0.0
1919 89 62 0.00 0.0
1918 92 66 0.00 0.0
1917 91 68 0.00 0.0
1916 100 73 0.00 0.0
1915 76 55 0.00 0.0
1914 90 63 0.00 0.0
1913 89 72 0.00 0.0
1912 85 64 0.00 0.0
1911 83 59 0.00 0.0
1910 81 65 2.36 0.0
1909 80 59 0.00 0.0
1908 78 48 0.00 0.0
1907 71 52 0.00 0.0
1906 94 73 0.00 0.0
1905 92 68 0.00 0.0
1904 85 59 0.00 0.0
1903 85 56 0.00 0.0
1902 77 63 0.00 0.0
1901 90 62 0.00 0.0
1900 95 72 0.00 0.0
1899 92 63 0.00 0.0
1898 89 68 0.00 0.0
1897 72 56 0.00 0.0
1896 83 64 0.45 0.0
1895 85 52 0.00 0.0
1894 83 62 0.00 0.0
1893 77 61 0.00 0.0
1892 n/a n/a 0.00 n/a
What's the all-time high for Cedar Rapids on 8/21?
For the date of Aug 21, the highest temperature ever reached in Cedar Rapids history is 100 °F which happened in 1916.
Highest Temperatures in Cedar Rapids on August 21
Rank Temperature Year
1 100 °F 1916
2 98 °F 1947
2 98 °F 1936
4 97 °F 1924
5 96 °F 1955
6 95 °F 1900
7 94 °F 1906
7 94 °F 1959
7 94 °F 1983
7 94 °F 1975
What's the all-time low for Cedar Rapids on 8/21?
For the date of Aug 21, the lowest temperature ever reached in Cedar Rapids history is 45 °F which has happened 2 times, most recently in 2004.
Lowest Temperatures in Cedar Rapids on August 21
Rank Temperature Year
1 45 °F 1950
1 45 °F 2004
3 46 °F 1925
3 46 °F 1956
3 46 °F 2012
6 47 °F 1940
6 47 °F 1927
8 48 °F 1970
8 48 °F 1908
8 48 °F 1949
Lowest High Temperatures in Cedar Rapids on August 21
Rank Temperature Year
1 69 °F 1990
2 71 °F 1965
2 71 °F 1907
4 72 °F 2009
4 72 °F 1897
6 73 °F 2018
6 73 °F 1978
8 74 °F 1941
8 74 °F 2004
8 74 °F 1951
What's the most it has ever rained in Cedar Rapids on 8/21?
For the date of Aug 21, the most precipitation ever recorded in Cedar Rapids history is 2.36 inches which has happened 2 times, most recently in 1987.
All-Time Most Precipitation in Cedar Rapids on August 21
Rank Precipitation Year
1 2.36 inches 1987
1 2.36 inches 1910
3 1.50 inches 1920
4 1.08 inches 1951
5 0.79 inches 1964
6 0.59 inches 2007
7 0.58 inches 1966
8 0.51 inches 2021
9 0.46 inches 2008
10 0.45 inches 1896
Weather Station Details
Years Station Coordinates
1892–2024 Cedar Rapids #1 location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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