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Walla Walla August Weather

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

Typical Walla Walla August Weather 1991–2020
Average daily high	88.9 °F
Average daily low	61.6 °F
Average monthly precipitation	0.4 inches
Average monthly snow	none
Daily chance of precipitation	7.9%
Daily chance of snow	0%

Walla Walla August Weather Records 1949–2024
Highest temperature	114 °F	August 4, 1961
Lowest temperature	42 °F	August 24, 1992
Highest daily low	79 °F	August 18, 2020
Lowest daily high	58 °F	August 26, 1956
Hottest average high temperature	96.3 °F	1967
Coldest average high temperature	81.0 °F	1968
Most daily precipitation	2.3 inches	August 22, 1992
Most monthly precipitation	3.1 inches	1977
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
August 1	91.5	63.2	108	50
August 2	91.5	63.2	109	50
August 3	91.6	63.3	107	50
August 4	91.6	63.3	114	50
August 5	91.5	63.4	108	47
August 6	91.4	63.4	105	48
August 7	91.2	63.3	108	49
August 8	91.0	63.2	108	51
August 9	90.8	63.0	105	52
August 10	90.5	62.9	104	54
August 11	90.2	62.6	109	53
August 12	89.9	62.4	105	53
August 13	89.7	62.2	106	52
August 14	89.5	62.0	103	50
August 15	89.3	61.9	105	51
August 16	89.0	61.7	106	49
August 17	88.7	61.4	110	51
August 18	88.4	61.3	107	50
August 19	88.1	61.0	103	47
August 20	87.7	60.8	107	49
August 21	87.5	60.5	100	50
August 22	87.2	60.3	104	48
August 23	87.0	60.1	102	45
August 24	86.7	59.8	101	42
August 25	86.3	59.6	103	46
August 26	86.0	59.3	99	45
August 27	85.7	59.0	107	48
August 28	85.4	58.8	104	45
August 29	85.1	58.5	102	45
August 30	84.7	58.2	104	47
August 31	84.3	57.9	103	46

Weather Station Details

Years	Station	Coordinates
1949–2024	Walla Walla Regional Airport	location