Kennewick September 20 Weather Records

Daily averages and all-time records for weather in Kennewick, Washington for the date of September 20.
September 20 All-Time Records
1894–2024
Highest temperature 94 °F 1939
Lowest temperature 35 °F 1928
Lowest daily high 60 °F 2017
Highest daily low 65 °F 1905
Most precipitation 0.27 inches 2006
September 20 Average Weather
1991–2020 1
Average high 79.0 °F
Average low 47.6 °F
Chance precipitation 10.8%
Kennewick September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 63 49 0.07 n/a
2022 81 49 0.00 n/a
2021 75 45 0.00 n/a
2020 80 55 0.00 n/a
2019 76 50 0.02 n/a
2018 74 44 0.00 0.0
2017 60 43 0.09 0.0
2016 73 43 0.00 0.0
2015 89 51 0.00 0.0
2014 87 50 0.00 0.0
2013 79 42 0.00 0.0
2012 86 47 0.00 0.0
2011 80 42 0.00 n/a
2010 75 59 0.00 n/a
2009 74 38 0.00 n/a
2008 74 58 0.09 n/a
2007 74 37 0.00 n/a
2006 66 43 0.27 n/a
2005 76 42 0.00 n/a
2004 71 45 0.00 n/a
2003 77 42 0.00 n/a
2002 73 44 0.00 n/a
2001 81 39 0.00 n/a
2000 80 37 0.20 n/a
1999 86 37 0.00 n/a
1998 76 57 0.09 0.0
1997 73 50 0.00 0.0
1996 73 53 0.00 0.0
1995 81 53 0.00 0.0
1994 89 55 0.00 0.0
1993 78 47 0.00 0.0
1992 81 53 0.00 0.0
1991 84 50 0.00 0.0
1990 83 48 0.00 0.0
1989 77 47 0.00 0.0
1988 68 51 0.03 0.0
1987 83 48 0.00 0.0
1986 69 53 0.01 0.0
1985 73 39 0.00 0.0
1984 80 59 0.06 0.0
1983 68 37 0.00 0.0
1982 72 53 0.10 0.0
1981 79 45 0.00 0.0
1980 73 55 0.02 0.0
1979 90 54 0.00 0.0
1978 73 42 0.00 0.0
1977 70 55 0.01 0.0
1976 90 53 0.00 0.0
1975 80 43 0.00 0.0
1974 86 48 0.00 0.0
1973 75 55 0.21 0.0
1972 69 50 0.00 0.0
1971 70 52 0.02 0.0
1970 70 53 0.05 0.0
1969 70 52 0.13 0.0
1968 67 41 0.00 0.0
1967 90 58 0.00 0.0
1966 83 47 0.00 0.0
1965 71 49 0.00 n/a
1964 74 51 0.00 0.0
1963 82 57 0.00 0.0
1962 84 52 0.00 0.0
1961 79 54 0.00 0.0
1960 71 44 0.00 0.0
1959 70 54 0.00 0.0
1958 68 49 0.00 0.0
1957 77 47 0.00 0.0
1956 82 55 0.00 0.0
1955 74 53 0.00 0.0
1954 70 46 0.00 0.0
1953 78 50 0.00 0.0
1952 86 50 0.00 0.0
1951 80 57 0.00 0.0
1950 82 49 0.00 0.0
1949 68 38 0.00 0.0
1948 81 42 0.00 0.0
1947 76 52 0.00 0.0
1946 74 57 0.00 0.0
1945 69 57 0.00 0.0
1944 90 60 0.00 0.0
1943 82 62 0.00 0.0
1942 89 42 0.00 n/a
1941 68 40 0.00 n/a
1940 80 44 0.00 n/a
1939 94 52 n/a n/a
1938 90 62 0.00 n/a
1937 80 57 n/a n/a
1936 84 48 n/a n/a
1935 80 49 n/a n/a
1934 68 38 0.00 0.0
1933 74 51 0.00 0.0
1932 68 48 n/a n/a
1931 79 53 0.00 n/a
1930 83 40 0.00 n/a
1929 71 54 n/a n/a
1928 72 35 0.00 n/a
1927 80 45 0.00 n/a
1926 71 36 0.00 n/a
1925 72 38 0.00 n/a
1924 70 43 0.00 n/a
1923 81 54 0.00 n/a
1922 83 62 0.00 n/a
1921 70 50 0.00 0.0
1920 75 55 0.00 n/a
1919 77 46 0.00 n/a
1918 89 64 0.00 n/a
1917 n/a 55 0.00 0.0
1916 86 45 0.00 0.0
1915 81 47 0.00 n/a
1914 70 49 0.00 0.0
1913 86 40 0.00 n/a
1912 81 40 0.00 n/a
1911 n/a 55 n/a n/a
1910 85 59 0.00 n/a
1909 n/a n/a n/a n/a
1908 80 43 0.00 n/a
1907 79 41 0.00 n/a
1906 91 52 0.00 n/a
1905 82 65 0.00 n/a
1904 76 40 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 88 45 0.00 n/a
1898 87 60 0.00 n/a
1897 87 48 0.00 n/a
1896 92 47 0.00 n/a
1895 61 35 0.00 n/a
1894 73 57 n/a n/a
What's the all-time high for Kennewick on 9/20?
For the date of Sep 20, the highest temperature ever reached in Kennewick history is 94 °F which happened in 1939.
Highest Temperatures in Kennewick on September 20
Rank Temperature Year
1 94 °F 1939
2 92 °F 1896
3 91 °F 1906
4 90 °F 1967
4 90 °F 1938
4 90 °F 1944
4 90 °F 1979
4 90 °F 1976
9 89 °F 1994
9 89 °F 1918
9 89 °F 1942
9 89 °F 2015
What's the all-time low for Kennewick on 9/20?
For the date of Sep 20, the lowest temperature ever reached in Kennewick history is 35 °F which has happened 2 times, most recently in 1928.
Lowest Temperatures in Kennewick on September 20
Rank Temperature Year
1 35 °F 1895
1 35 °F 1928
3 36 °F 1926
4 37 °F 2007
4 37 °F 1999
4 37 °F 2000
4 37 °F 1983
8 38 °F 1934
8 38 °F 1925
8 38 °F 1949
8 38 °F 2009
Lowest High Temperatures in Kennewick on September 20
Rank Temperature Year
1 60 °F 2017
2 61 °F 1895
3 63 °F 2023
4 66 °F 2006
5 67 °F 1968
6 68 °F 1932
6 68 °F 1983
6 68 °F 1934
6 68 °F 1949
6 68 °F 1958
6 68 °F 1941
6 68 °F 1988
What's the most it has ever rained in Kennewick on 9/20?
For the date of Sep 20, the most precipitation ever recorded in Kennewick history is 0.27 inches which happened in 2006.
All-Time Most Precipitation in Kennewick on September 20
Rank Precipitation Year
1 0.27 inches 2006
2 0.21 inches 1973
3 0.20 inches 2000
4 0.13 inches 1969
5 0.10 inches 1982
6 0.09 inches 1998
6 0.09 inches 2008
6 0.09 inches 2017
9 0.07 inches 2023
10 0.06 inches 1984
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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