Earliest and Latest Days of 100° F in Kennewick

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Kennewick, Washington history. It is based on NOAA data from the years 1894–2024.

Also see:

Earliest 100 degree day in Kennewick?

The earliest in the year that Kennewick, Washington had a high temperature of at least 100 °F is May 13 which happened in 1993.

Latest 100 degree day in Kennewick?

The latest in the year that Kennewick, Washington had a high temperature of at least 100 °F is September 9 which happened in 1940.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 13	1993	100 °F
May 14	1939	101 °F
May 17	2006	100 °F
May 23	2001	101 °F
May 26	1947	100 °F
May 26	1936	100 °F
May 29	1983	103 °F
May 30	1986	100 °F
May 30	1983	104 °F
May 31	1986	103 °F
May 31	1910	104 °F
June 1	1986	104 °F
June 1	1913	101 °F
June 1	1909	100 °F
June 2	2021	104 °F
June 2	1986	103 °F
June 3	2007	100 °F
June 4	1969	100 °F
June 6	2016	104 °F
June 7	2016	101 °F
June 7	2015	100 °F
June 7	1977	100 °F
June 7	1912	110 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 9	1940	100 °F
September 4	1934	100 °F
September 4	1911	100 °F
September 2	1987	100 °F
September 2	1938	100 °F
September 2	1911	100 °F
September 1	2022	102 °F
September 1	1967	100 °F
September 1	1911	100 °F
August 31	1967	103 °F
August 31	1911	100 °F
August 30	1998	100 °F
August 30	1967	102 °F
August 29	1967	103 °F
August 29	1922	100 °F
August 28	2023	103 °F
August 28	1986	100 °F
August 28	1972	103 °F
August 28	1967	100 °F
August 28	1934	101 °F
August 28	1913	100 °F