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Thermopolis May Weather

Averages and records for weather in Thermopolis, Wyoming in the month of May.

Typical Thermopolis May Weather 1991–2020
Average daily high	71.4 °F
Average daily low	42.5 °F
Average monthly precipitation	1.9 inches
Average monthly snow	0.2 inches
Daily chance of precipitation	24.3%
Daily chance of snow	0.22%

Thermopolis May Weather Records 1899–2024
Highest temperature	98 °F	May 31, 1936
Lowest temperature	12 °F	May 2, 1954
Highest daily low	69 °F	May 31, 2020
Lowest daily high	34 °F	May 1, 1954
Hottest average high temperature	82.4 °F	1934
Coldest average high temperature	62.4 °F	1935
Most daily precipitation	4.5 inches	May 4, 1906
Most monthly precipitation	6.0 inches	1906
Most daily snow	12.0 inches	May 1, 1954
Most monthly snow	13.0 inches	1917

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	66.1	37.6	88	17
May 2	66.5	37.9	85	12
May 3	66.9	38.3	89	20
May 4	67.4	38.6	87	22
May 5	67.8	39.0	89	18
May 6	68.1	39.3	89	16
May 7	68.4	39.6	90	27
May 8	68.7	39.9	91	24
May 9	68.9	40.2	87	22
May 10	69.2	40.5	87	21
May 11	69.5	40.8	89	21
May 12	69.8	41.2	90	19
May 13	70.2	41.6	92	25
May 14	70.6	41.9	91	26
May 15	71.1	42.2	93	30
May 16	71.6	42.6	96	22
May 17	72.0	43.0	91	27
May 18	72.3	43.3	95	22
May 19	72.7	43.6	93	27
May 20	73.0	44.0	92	30
May 21	73.3	44.2	91	25
May 22	73.7	44.5	90	27
May 23	74.2	44.9	87	26
May 24	74.7	45.2	88	30
May 25	75.1	45.5	89	31
May 26	75.5	45.8	92	33
May 27	75.9	46.2	93	30
May 28	76.2	46.4	94	30
May 29	76.5	46.7	96	31
May 30	76.7	46.9	96	31
May 31	77.0	47.1	98	31

Weather Station Details

Years	Station	Coordinates
1899–2024	Thermopolis	location