Kennewick September 30 Weather Records

Daily averages and all-time records for weather in Kennewick, Washington for the date of September 30.
September 30 All-Time Records
1894–2024
Highest temperature 87 °F 1980
Lowest temperature 32 °F 1985
Lowest daily high 57 °F 2019
Highest daily low 64 °F 2000
Most precipitation 0.72 inches 2005
September 30 Average Weather
1991–2020 1
Average high 74.2 °F
Average low 44.6 °F
Chance precipitation 13.9%
Kennewick September 30 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 72 43 0.00 n/a
2022 77 53 0.00 n/a
2021 83 44 0.11 n/a
2020 82 44 0.00 n/a
2019 57 39 0.00 n/a
2018 65 47 0.00 0.0
2017 72 46 0.00 0.0
2016 76 59 0.00 0.0
2015 77 38 0.00 0.0
2014 74 50 0.01 0.0
2013 67 51 0.00 0.0
2012 79 44 0.00 0.0
2011 78 41 0.00 n/a
2010 83 49 0.00 n/a
2009 66 42 0.00 n/a
2008 81 43 0.00 n/a
2007 59 49 0.34 n/a
2006 85 42 0.00 n/a
2005 74 57 0.72 n/a
2004 78 43 0.00 n/a
2003 82 51 0.00 n/a
2002 63 38 0.00 n/a
2001 80 39 0.00 n/a
2000 73 64 0.14 n/a
1999 75 39 0.00 n/a
1998 81 51 0.00 0.0
1997 82 52 0.00 0.0
1996 86 49 0.00 0.0
1995 74 53 0.00 0.0
1994 72 54 0.05 0.0
1993 84 49 0.00 0.0
1992 77 44 0.00 0.0
1991 84 50 0.00 0.0
1990 85 46 0.00 0.0
1989 86 58 0.00 0.0
1988 77 47 0.00 0.0
1987 79 45 0.00 0.0
1986 65 46 0.12 0.0
1985 67 32 0.00 0.0
1984 68 39 0.00 0.0
1983 69 n/a 0.00 0.0
1982 68 45 0.00 0.0
1981 69 39 0.00 0.0
1980 87 56 0.00 0.0
1979 82 42 0.00 0.0
1978 79 49 0.00 0.0
1977 67 45 n/a 0.0
1976 84 51 0.00 0.0
1975 75 40 0.00 0.0
1974 77 38 0.00 0.0
1973 71 53 0.00 0.0
1972 77 37 0.00 0.0
1971 62 40 0.00 0.0
1970 83 45 0.00 0.0
1969 73 56 0.00 0.0
1968 85 47 0.00 0.0
1967 72 55 0.00 0.0
1966 76 44 0.00 0.0
1965 82 51 0.00 n/a
1964 70 56 0.03 0.0
1963 83 59 0.00 0.0
1962 73 42 0.00 0.0
1961 68 42 0.00 0.0
1960 82 42 0.00 0.0
1959 65 48 0.00 0.0
1958 73 39 0.00 0.0
1957 75 52 0.23 0.0
1956 71 41 0.01 0.0
1955 65 37 0.00 0.0
1954 63 33 0.00 0.0
1953 79 47 0.00 0.0
1952 78 49 0.00 0.0
1951 66 59 0.19 0.0
1950 n/a 34 0.00 0.0
1949 71 56 0.00 0.0
1948 67 33 0.00 0.0
1947 79 49 0.00 0.0
1946 68 50 0.00 0.0
1945 78 37 0.00 0.0
1944 70 43 0.00 0.0
1943 85 40 0.00 0.0
1942 84 50 0.45 n/a
1941 74 54 0.00 n/a
1940 80 50 0.00 n/a
1939 82 38 n/a n/a
1938 81 59 0.00 n/a
1937 60 44 n/a n/a
1936 78 43 n/a n/a
1935 78 41 n/a n/a
1934 81 45 0.00 0.0
1933 69 32 0.00 0.0
1932 83 46 n/a n/a
1931 81 55 0.00 n/a
1930 58 49 0.08 n/a
1929 74 37 n/a n/a
1928 74 52 0.00 n/a
1927 66 47 0.00 n/a
1926 64 46 0.00 n/a
1925 62 46 0.08 n/a
1924 72 55 0.00 n/a
1923 82 44 0.00 n/a
1922 83 50 0.00 n/a
1921 73 38 0.00 0.0
1920 81 42 0.00 n/a
1919 65 48 0.00 n/a
1918 83 57 0.00 n/a
1917 83 41 0.00 0.0
1916 72 45 0.00 0.0
1915 76 42 0.00 n/a
1914 81 56 0.00 0.0
1913 75 35 0.02 n/a
1912 79 42 0.00 n/a
1911 73 50 0.17 n/a
1910 79 52 0.00 n/a
1909 n/a n/a n/a n/a
1908 81 44 0.00 n/a
1907 70 40 0.00 n/a
1906 87 46 0.00 n/a
1905 72 47 0.00 n/a
1904 86 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 80 53 0.04 n/a
1898 62 42 0.00 n/a
1897 77 48 0.00 n/a
1896 78 53 0.00 n/a
1895 81 47 0.00 n/a
1894 66 47 0.00 n/a
What's the all-time high for Kennewick on 9/30?
For the date of Sep 30, the highest temperature ever reached in Kennewick history is 87 °F which has happened 2 times, most recently in 1980.
Highest Temperatures in Kennewick on September 30
Rank Temperature Year
1 87 °F 1980
1 87 °F 1906
3 86 °F 1989
3 86 °F 1904
3 86 °F 1996
6 85 °F 2006
6 85 °F 1990
6 85 °F 1943
6 85 °F 1968
10 84 °F 1993
10 84 °F 1991
10 84 °F 1942
10 84 °F 1976
What's the all-time low for Kennewick on 9/30?
For the date of Sep 30, the lowest temperature ever reached in Kennewick history is 32 °F which has happened 2 times, most recently in 1985.
Lowest Temperatures in Kennewick on September 30
Rank Temperature Year
1 32 °F 1985
1 32 °F 1933
3 33 °F 1948
3 33 °F 1954
5 34 °F 1950
6 35 °F 1913
7 37 °F 1929
7 37 °F 1955
7 37 °F 1945
7 37 °F 1972
Lowest High Temperatures in Kennewick on September 30
Rank Temperature Year
1 57 °F 2019
2 58 °F 1930
3 59 °F 2007
4 60 °F 1937
5 62 °F 1898
5 62 °F 1925
5 62 °F 1971
8 63 °F 2002
8 63 °F 1954
10 64 °F 1926
What's the most it has ever rained in Kennewick on 9/30?
For the date of Sep 30, the most precipitation ever recorded in Kennewick history is 0.72 inches which happened in 2005.
All-Time Most Precipitation in Kennewick on September 30
Rank Precipitation Year
1 0.72 inches 2005
2 0.45 inches 1942
3 0.34 inches 2007
4 0.23 inches 1957
5 0.19 inches 1951
6 0.17 inches 1911
7 0.14 inches 2000
8 0.12 inches 1986
9 0.11 inches 2021
10 0.08 inches 1930
10 0.08 inches 1925
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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