Kennewick August 21 Weather Records

Daily averages and all-time records for weather in Kennewick, Washington for the date of August 21.
August 21 All-Time Records
1894–2024
Highest temperature 104 °F 1977
Lowest temperature 42 °F 1945
Lowest daily high 72 °F 1985
Highest daily low 71 °F 1977
Most precipitation 0.20 inches 1899
August 21 Average Weather
1991–2020 1
Average high 89.4 °F
Average low 56.1 °F
Chance precipitation 6.8%
Kennewick August 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 82 61 0.00 n/a
2022 102 66 0.00 n/a
2021 81 59 0.00 n/a
2020 96 67 0.00 n/a
2019 91 67 0.00 n/a
2018 88 58 0.00 0.0
2017 90 48 0.00 0.0
2016 100 52 0.00 0.0
2015 86 57 0.00 0.0
2014 86 58 0.00 0.0
2013 91 50 0.00 0.0
2012 93 65 0.16 0.0
2011 99 49 0.00 n/a
2010 86 56 0.01 n/a
2009 95 65 0.00 n/a
2008 80 53 0.00 n/a
2007 86 50 0.00 n/a
2006 98 54 0.00 n/a
2005 100 58 0.00 n/a
2004 93 62 0.00 n/a
2003 92 49 0.00 n/a
2002 78 58 0.18 n/a
2001 86 57 0.00 n/a
2000 83 45 0.00 n/a
1999 90 60 0.00 n/a
1998 92 63 0.00 0.0
1997 89 63 0.00 0.0
1996 78 53 0.00 0.0
1995 91 56 0.00 0.0
1994 86 62 0.00 0.0
1993 81 64 0.00 0.0
1992 90 62 0.00 0.0
1991 99 66 0.00 0.0
1990 79 59 0.01 0.0
1989 85 65 0.12 0.0
1988 82 52 0.00 0.0
1987 84 52 0.00 0.0
1986 91 63 0.00 0.0
1985 72 49 0.00 0.0
1984 90 50 0.00 0.0
1983 87 54 0.00 0.0
1982 100 65 0.00 0.0
1981 88 51 0.00 0.0
1980 88 51 0.00 0.0
1979 86 62 0.00 0.0
1978 n/a n/a n/a n/a
1977 104 71 0.00 0.0
1976 88 49 0.00 0.0
1975 90 54 0.00 0.0
1974 85 51 0.00 0.0
1973 92 45 0.00 0.0
1972 92 60 0.00 0.0
1971 90 65 0.00 0.0
1970 92 54 0.00 0.0
1969 90 59 0.00 0.0
1968 77 53 0.02 0.0
1967 96 65 0.00 0.0
1966 87 49 0.00 0.0
1965 79 61 0.05 n/a
1964 90 53 0.00 0.0
1963 81 54 0.00 0.0
1962 92 62 0.00 0.0
1961 97 66 0.00 0.0
1960 83 56 0.00 0.0
1959 80 58 0.06 0.0
1958 n/a n/a 0.00 0.0
1957 n/a n/a 0.00 0.0
1956 97 57 0.00 0.0
1955 87 47 0.00 0.0
1954 80 58 0.15 0.0
1953 80 54 0.00 0.0
1952 91 50 0.00 0.0
1951 96 55 0.00 0.0
1950 97 57 0.00 0.0
1949 85 58 0.00 0.0
1948 83 57 0.00 0.0
1947 72 52 0.00 0.0
1946 98 59 0.00 0.0
1945 93 42 0.00 0.0
1944 92 46 0.00 0.0
1943 81 58 0.03 0.0
1942 94 63 0.00 n/a
1941 100 67 0.00 n/a
1940 87 52 n/a n/a
1939 103 49 n/a n/a
1938 87 65 n/a n/a
1937 86 58 0.00 n/a
1936 89 61 n/a n/a
1935 90 49 0.00 n/a
1934 95 59 0.00 n/a
1933 92 50 0.00 0.0
1932 84 54 0.00 n/a
1931 89 61 0.00 n/a
1930 88 45 0.00 0.0
1929 89 56 n/a n/a
1928 83 60 n/a n/a
1927 89 61 0.00 n/a
1926 81 46 0.00 n/a
1925 93 68 0.00 n/a
1924 83 54 0.00 n/a
1923 93 58 0.00 n/a
1922 82 53 0.00 0.0
1921 83 60 0.00 0.0
1920 90 46 0.00 0.0
1919 94 54 0.00 n/a
1918 81 52 0.00 n/a
1917 88 61 0.00 0.0
1916 86 45 0.00 n/a
1915 92 66 0.00 0.0
1914 88 63 0.00 0.0
1913 98 60 0.00 n/a
1912 96 51 0.00 n/a
1911 89 54 0.00 n/a
1910 92 55 0.00 0.0
1909 84 43 0.00 0.0
1908 95 64 0.00 n/a
1907 95 55 0.00 n/a
1906 89 60 0.00 n/a
1905 86 47 0.00 n/a
1904 78 46 0.00 0.0
1903 n/a n/a n/a n/a
1902 n/a n/a n/a n/a
1901 n/a n/a n/a n/a
1900 n/a n/a n/a n/a
1899 77 51 0.20 n/a
1898 86 60 0.00 n/a
1897 104 61 0.00 n/a
1896 93 57 0.00 n/a
1895 83 58 0.00 n/a
1894 98 65 0.00 n/a
What's the all-time high for Kennewick on 8/21?
For the date of Aug 21, the highest temperature ever reached in Kennewick history is 104 °F which has happened 2 times, most recently in 1977.
Highest Temperatures in Kennewick on August 21
Rank Temperature Year
1 104 °F 1897
1 104 °F 1977
3 103 °F 1939
4 102 °F 2022
5 100 °F 2016
5 100 °F 1941
5 100 °F 1982
5 100 °F 2005
9 99 °F 2011
9 99 °F 1991
What's the all-time low for Kennewick on 8/21?
For the date of Aug 21, the lowest temperature ever reached in Kennewick history is 42 °F which happened in 1945.
Lowest Temperatures in Kennewick on August 21
Rank Temperature Year
1 42 °F 1945
2 43 °F 1909
3 45 °F 1916
3 45 °F 2000
3 45 °F 1930
3 45 °F 1973
7 46 °F 1944
7 46 °F 1926
7 46 °F 1920
7 46 °F 1904
Lowest High Temperatures in Kennewick on August 21
Rank Temperature Year
1 72 °F 1985
1 72 °F 1947
3 77 °F 1968
3 77 °F 1899
5 78 °F 2002
5 78 °F 1996
5 78 °F 1904
8 79 °F 1990
8 79 °F 1965
10 80 °F 1953
10 80 °F 1954
10 80 °F 2008
10 80 °F 1959
What's the most it has ever rained in Kennewick on 8/21?
For the date of Aug 21, the most precipitation ever recorded in Kennewick history is 0.20 inches which happened in 1899.
All-Time Most Precipitation in Kennewick on August 21
Rank Precipitation Year
1 0.20 inches 1899
2 0.18 inches 2002
3 0.16 inches 2012
4 0.15 inches 1954
5 0.12 inches 1989
6 0.06 inches 1959
7 0.05 inches 1965
8 0.03 inches 1943
9 0.02 inches 1968
10 0.01 inches 1990
10 0.01 inches 2010
Weather Station Details
Years Station Coordinates
1999–2024 Pasco Tri Cities Airport location
1894–1998 Kennewick location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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