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West Yellowstone May Weather

Averages and records for weather in West Yellowstone, Montana in the month of May.

Typical West Yellowstone May Weather 1991–2020
Average daily high	60.3 °F
Average daily low	30.5 °F
Average monthly precipitation	2.4 inches
Daily chance of precipitation	33.0%

West Yellowstone May Weather Records 1924–2024
Highest temperature	88 °F	May 30, 1936
Lowest temperature	0 °F	May 2, 1954
Highest daily low	48 °F	May 21, 1964
Lowest daily high	33 °F	May 11, 1983
Hottest average high temperature	72.5 °F	1934
Coldest average high temperature	51.1 °F	1975
Most daily precipitation	1.5 inches	May 21, 2021
Most monthly precipitation	4.8 inches	2011

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	55.6	26.7	76	9
May 2	56.0	27.0	76	0
May 3	56.3	27.3	76	7
May 4	56.7	27.5	79	8
May 5	57.0	27.9	78	5
May 6	57.2	28.1	80	12
May 7	57.4	28.4	79	11
May 8	57.6	28.6	74	12
May 9	58.0	28.8	77	10
May 10	58.2	29.1	78	10
May 11	58.6	29.3	80	12
May 12	58.8	29.6	79	12
May 13	59.2	29.8	81	15
May 14	59.6	30.1	79	15
May 15	60.0	30.4	79	16
May 16	60.4	30.7	80	16
May 17	60.7	30.9	77	15
May 18	61.1	31.2	79	16
May 19	61.4	31.4	83	17
May 20	61.7	31.6	83	16
May 21	62.0	31.8	78	18
May 22	62.5	32.1	80	20
May 23	62.7	32.3	79	13
May 24	63.0	32.5	83	20
May 25	63.3	32.8	80	18
May 26	63.5	33.0	84	14
May 27	63.7	33.2	82	18
May 28	63.8	33.5	84	19
May 29	63.9	33.6	84	20
May 30	64.1	33.8	88	22
May 31	64.3	33.9	84	19

Weather Station Details

Years	Station	Coordinates
1997–2024	West Yellowstone	location
1924–1996	West Yellowstone	location