Earliest and Latest Days of 100° F in Pullman

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Pullman, Washington history. It is based on NOAA data from the years 1940–2024.

Also see:

Earliest 100 degree day in Pullman?

The earliest in the year that Pullman, Washington had a high temperature of at least 100 °F is June 29 which has happened twice, most recently in 2021.

Latest 100 degree day in Pullman?

The latest in the year that Pullman, Washington had a high temperature of at least 100 °F is September 4 which has happened twice, most recently in 1998.

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 29	2021	101 °F
June 29	2015	104 °F
June 30	2021	106 °F
June 30	2015	103 °F
July 1	2021	104 °F
July 12	1967	102 °F
July 14	2002	100 °F
July 18	1960	104 °F
July 22	2023	100 °F
July 22	1994	100 °F
July 23	2006	101 °F
July 23	1994	101 °F
July 23	1959	102 °F
July 24	2006	102 °F
July 25	1994	100 °F
July 27	1998	102 °F
July 28	1998	102 °F
July 29	1996	100 °F
July 29	1960	100 °F
July 30	2014	100 °F
July 30	2003	100 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 4	1998	100 °F
September 4	1988	100 °F
September 2	1998	100 °F
September 1	2022	103 °F
August 31	1967	100 °F
August 30	2017	101 °F
August 29	2009	101 °F
August 25	1958	100 °F
August 24	1966	100 °F
August 22	2006	100 °F
August 19	2020	101 °F
August 19	1992	100 °F
August 19	1961	103 °F
August 19	1946	101 °F
August 18	2023	101 °F
August 18	2022	100 °F
August 18	2020	100 °F
August 18	2008	103 °F
August 17	2023	101 °F
August 17	2020	102 °F