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Iron Mountain May Weather

Averages and records for weather in Iron Mountain, Michigan in the month of May.

Typical Iron Mountain May Weather 1991–2020
Average daily high	66.3 °F
Average daily low	41.8 °F
Average monthly precipitation	3.5 inches
Average monthly snow	0.2 inches
Daily chance of precipitation	38.7%
Daily chance of snow	0.69%

Iron Mountain May Weather Records 1899–2024
Highest temperature	100 °F	May 31, 1934
Lowest temperature	16 °F	May 11, 1990
Highest daily low	67 °F	May 21, 2009
Lowest daily high	34 °F	May 7, 1989
Hottest average high temperature	77.2 °F	1977
Coldest average high temperature	55.6 °F	1907
Most daily precipitation	2.8 inches	May 16, 1976
Most monthly precipitation	7.0 inches	1960
Most daily snow	8.0 inches	May 11, 1990
Most monthly snow	11.0 inches	1990

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	59.4	35.5	88	20
May 2	59.8	35.9	84	21
May 3	60.3	36.1	90	19
May 4	60.6	36.4	88	20
May 5	61.0	36.8	87	19
May 6	61.5	37.1	88	20
May 7	62.1	37.6	90	19
May 8	62.5	38.0	89	20
May 9	62.9	38.5	88	19
May 10	63.3	39.0	86	18
May 11	63.8	39.4	88	16
May 12	64.3	39.9	87	20
May 13	64.8	40.4	90	18
May 14	65.3	40.9	91	22
May 15	65.8	41.3	89	23
May 16	66.3	41.7	90	21
May 17	66.8	42.1	88	25
May 18	67.3	42.4	87	26
May 19	67.6	42.7	89	24
May 20	67.8	43.0	88	24
May 21	68.1	43.2	92	25
May 22	68.3	43.5	92	22
May 23	68.6	43.8	87	21
May 24	69.0	44.2	89	22
May 25	69.4	44.6	91	27
May 26	69.7	44.9	90	27
May 27	70.2	45.4	91	26
May 28	70.7	45.8	92	26
May 29	71.1	46.2	92	28
May 30	71.5	46.5	95	29
May 31	71.9	46.9	100	27

Weather Station Details

Years	Station	Coordinates
1899–2024	Iron Mountain	location