Earliest and Latest Days of 90° F in Walla Walla

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Walla Walla, Washington history. It is based on NOAA data from the years 1949–2024.

Also see:

Earliest 90 degree day in Walla Walla?

The earliest in the year that Walla Walla, Washington had a high temperature of at least 90 °F is April 23 which happened in 1977.

Latest 90 degree day in Walla Walla?

The latest in the year that Walla Walla, Washington had a high temperature of at least 90 °F is September 29 which happened in 1976.

Earliest Days ≥ 90 °F

Date	Year	Temperature
April 23	1977	93 °F
April 24	1977	96 °F
May 4	2017	90 °F
May 4	1966	93 °F
May 5	1966	95 °F
May 6	1992	93 °F
May 7	1992	90 °F
May 7	1987	91 °F
May 8	2007	92 °F
May 8	1987	93 °F
May 9	1994	90 °F
May 10	2013	93 °F
May 10	1949	90 °F
May 11	2013	91 °F
May 11	1994	91 °F
May 11	1993	91 °F
May 11	1988	91 °F
May 11	1949	90 °F
May 12	1993	94 °F
May 12	1988	95 °F
May 12	1949	93 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
September 29	1976	90 °F
September 28	1967	90 °F
September 27	1994	90 °F
September 27	1967	90 °F
September 26	1994	90 °F
September 26	1952	92 °F
September 25	1994	92 °F
September 25	1974	92 °F
September 25	1952	99 °F
September 24	2011	93 °F
September 24	2001	93 °F
September 24	1990	90 °F
September 24	1989	93 °F
September 24	1957	92 °F
September 24	1952	95 °F
September 23	2011	93 °F
September 23	1994	90 °F
September 23	1990	90 °F
September 23	1952	90 °F
September 22	2001	90 °F
September 22	1999	90 °F