< Previous Month Next Month >

Gillette May Weather

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

Typical Gillette May Weather 1991–2020
Average daily high	65.4 °F
Average daily low	40.2 °F
Average monthly precipitation	3.2 inches
Average monthly snow	1.3 inches
Daily chance of precipitation	40.2%
Daily chance of snow	2.1%

Gillette May Weather Records 1902–2024
Highest temperature	95 °F	May 28, 1934
Lowest temperature	11 °F	May 3, 1954
Highest daily low	69 °F	May 31, 1923
Lowest daily high	28 °F	May 9, 1927
Hottest average high temperature	79.9 °F	1934
Coldest average high temperature	54.3 °F	1935
Most daily precipitation	3.2 inches	May 18, 1978
Most monthly precipitation	11.1 inches	1978
Most daily snow	10.0 inches	May 20, 1975
Most monthly snow	17.5 inches	1965

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	60.1	35.3	89	13
May 2	60.5	35.6	84	14
May 3	60.8	35.9	88	11
May 4	61.3	36.2	90	16
May 5	61.7	36.6	85	20
May 6	62.0	36.9	87	24
May 7	62.3	37.2	89	25
May 8	62.5	37.5	86	18
May 9	62.8	37.7	82	21
May 10	63.0	38.1	92	22
May 11	63.3	38.4	86	14
May 12	63.7	38.8	90	15
May 13	64.1	39.2	91	23
May 14	64.5	39.5	88	26
May 15	65.1	39.9	89	25
May 16	65.5	40.3	92	28
May 17	65.8	40.8	90	25
May 18	66.2	41.1	92	22
May 19	66.5	41.4	92	25
May 20	66.7	41.8	90	23
May 21	67.1	42.0	88	18
May 22	67.5	42.4	91	27
May 23	68.0	42.8	88	28
May 24	68.4	43.2	90	24
May 25	68.9	43.5	89	29
May 26	69.3	43.9	92	30
May 27	69.8	44.3	94	27
May 28	70.1	44.6	95	25
May 29	70.4	44.9	92	30
May 30	70.7	45.2	90	31
May 31	71.0	45.4	91	29

Weather Station Details

Years	Station	Coordinates
1902–2024	Gillette 4SE	location