Average May Temperature in Idaho Falls by Year

This page contains a list of the average monthly high and low temperatures in Idaho Falls, Idaho for the month of May each year between 1949 and 2023. It is based on NOAA data.

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What Was the Hottest May Ever in Idaho Falls?

1958 was the warmest May in the history of Idaho Falls, Idaho. The average daily high temperature was 76.0 °F, and the average low was 43.7 °F.

What Was the Coldest May Ever in Idaho Falls?

2010 was the coolest May in the history of Idaho Falls, Idaho. The average daily high temperature was 60.3 °F, and the average low was 34.8 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	3	72.4	43.1
2022	58	63.6	37.6
2021	39	67.4	38.3
2020	24	68.6	39.2
2019	54	64.5	37.6
2018	12	70.5	41.3
2017	36	68.6	37.6
2016	38	67.6	38.3
2015	17	67.7	42.3
2014	15	71.2	38.9
2013	16	69.5	40.7
2012	27	68.5	39.2
2011	61	61.4	39.0
2010	71	60.3	34.8
2009	23	69.6	38.4
2008	49	65.7	37.6
2007	29	70.9	36.5
2006	21	70.0	38.1
2005	46	64.9	39.1
2004	50	65.0	38.2
2003	31	68.2	38.7
2002	47	67.1	36.6
2001	14	72.5	38.5
2000	37	67.6	38.4
1999	59	63.0	37.9
1998	40	66.6	38.8
1993	8	69.5	42.4
1992	2	75.4	42.2
1991	55	63.2	38.7
1990	53	65.1	37.0
1989	43	66.6	38.1
1988	32	68.6	38.2
1987	6	70.3	42.0
1986	45	66.3	38.1
1985	7	70.3	41.9
1984	33	66.3	40.3
1983	62	62.8	37.1
1982	64	63.1	36.1
1981	57	61.4	40.0
1980	56	61.6	39.9
1979	25	68.3	39.6
1978	66	62.1	36.7
1977	65	61.5	37.6
1976	18	69.2	40.1
1975	68	60.7	36.5
1974	52	65.9	36.5
1973	28	69.7	38.0
1972	30	69.5	37.7
1971	35	66.6	39.7
1970	41	66.8	38.5
1969	4	73.7	40.6
1968	60	63.4	37.3
1967	44	66.9	37.7
1966	9	73.3	38.6
1965	67	62.3	36.1
1964	34	66.8	39.6
1963	19	66.8	42.5
1962	42	65.7	39.5
1961	26	68.8	38.9
1960	48	66.5	37.1
1959	70	60.4	36.3
1958	1	76.0	43.7
1957	22	66.6	41.5
1956	5	70.6	42.6
1955	51	65.9	37.2
1954	10	72.0	39.8
1953	69	61.5	35.2
1952	13	70.2	41.1
1951	20	68.6	40.2
1950	63	64.4	35.0
1949	11	70.2	41.6

Weather Station Details

Years	Station	Coordinates
1948–2024	Idaho Falls Fanning Field	location