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Pullman May Weather

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

Typical Pullman May Weather 1991–2020
Average daily high	66.1 °F
Average daily low	42.2 °F
Average monthly precipitation	1.8 inches
Average monthly snow	0.1 inches
Daily chance of precipitation	31.1%
Daily chance of snow	0.31%

Pullman May Weather Records 1940–2024
Highest temperature	97 °F	May 24, 2001
Lowest temperature	21 °F	May 8, 2002
Highest daily low	63 °F	May 18, 2008
Lowest daily high	39 °F	May 1, 1969
Hottest average high temperature	74.0 °F	2023
Coldest average high temperature	58.0 °F	1962
Most daily precipitation	1.4 inches	May 8, 1956
Most monthly precipitation	5.3 inches	1948
Most daily snow	1.0 inches	May 8, 2002
Most monthly snow	2.0 inches	2002

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	61.9	38.7	82	24
May 2	62.2	38.9	83	23
May 3	62.6	39.2	86	27
May 4	62.9	39.5	88	29
May 5	63.1	39.7	90	28
May 6	63.3	39.9	86	28
May 7	63.4	40.0	86	27
May 8	63.6	40.2	88	21
May 9	63.8	40.4	87	29
May 10	64.2	40.7	86	27
May 11	64.5	40.9	88	29
May 12	64.8	41.1	87	28
May 13	65.0	41.4	90	30
May 14	65.4	41.6	85	29
May 15	65.8	41.9	86	30
May 16	66.1	42.2	90	28
May 17	66.4	42.5	90	31
May 18	66.7	42.7	91	27
May 19	67.1	43.0	91	31
May 20	67.3	43.2	87	30
May 21	67.6	43.4	89	27
May 22	67.8	43.6	88	30
May 23	68.0	43.8	90	28
May 24	68.1	44.0	97	30
May 25	68.4	44.2	92	33
May 26	68.5	44.4	89	33
May 27	68.6	44.5	92	31
May 28	68.7	44.6	89	34
May 29	68.7	44.7	92	31
May 30	68.8	44.8	90	32
May 31	68.8	44.9	91	32

Weather Station Details

Years	Station	Coordinates
1940–2024	Pullman 2 Nw	location