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Walla Walla May Weather

Averages and records for weather in Walla Walla, Washington in the month of May.

Typical Walla Walla May Weather 1991–2020
Average daily high	71.9 °F
Average daily low	49.1 °F
Average monthly precipitation	2.1 inches
Average monthly snow	none
Daily chance of precipitation	31.6%
Daily chance of snow	0%

Walla Walla May Weather Records 1949–2024
Highest temperature	100 °F	May 28, 1983
Lowest temperature	26 °F	May 1, 1954
Highest daily low	69 °F	May 31, 1986
Lowest daily high	47 °F	May 1, 1959
Hottest average high temperature	79.2 °F	1992
Coldest average high temperature	64.0 °F	2022
Most daily precipitation	1.7 inches	May 26, 1971
Most monthly precipitation	6.6 inches	1991
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
May 1	67.7	45.2	83	26
May 2	68.0	45.5	82	32
May 3	68.3	45.7	89	33
May 4	68.6	46.1	93	34
May 5	68.8	46.3	95	34
May 6	68.9	46.5	93	34
May 7	69.0	46.7	91	32
May 8	69.3	46.9	93	37
May 9	69.6	47.1	90	36
May 10	70.0	47.4	93	34
May 11	70.2	47.7	91	32
May 12	70.5	47.9	95	37
May 13	70.8	48.2	92	37
May 14	71.2	48.5	99	35
May 15	71.5	48.8	94	38
May 16	71.9	49.2	94	36
May 17	72.1	49.5	95	37
May 18	72.5	49.8	94	37
May 19	72.7	50.0	91	39
May 20	73.0	50.2	92	35
May 21	73.4	50.5	90	36
May 22	73.6	50.7	95	35
May 23	73.7	50.9	95	38
May 24	74.0	51.2	93	40
May 25	74.1	51.4	95	38
May 26	74.2	51.6	93	37
May 27	74.3	51.7	94	39
May 28	74.5	51.9	100	41
May 29	74.6	52.0	99	37
May 30	74.7	52.2	97	40
May 31	74.8	52.3	99	39

Weather Station Details

Years	Station	Coordinates
1949–2024	Walla Walla Regional Airport	location