Average May Temperature in Boise by Year

This page contains a list of the average monthly high and low temperatures in Boise, Idaho for the month of May each year between 1911 and 2023. It is based on NOAA data.

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What Was the Hottest May Ever in Boise?

2023 was the warmest May in the history of Boise, Idaho. The average daily high temperature was 77.4 °F, and the average low was 52.5 °F.

What Was the Coldest May Ever in Boise?

1916 was the coolest May in the history of Boise, Idaho. The average daily high temperature was 67.1 °F, and the average low was 36.8 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	1	77.4	52.5
2022	87	67.1	43.8
2021	41	72.4	46.8
2020	32	72.6	48.4
2019	38	71.2	48.4
2018	6	76.5	51.2
2017	39	72.5	46.9
2016	27	73.1	48.7
2015	13	74.2	50.0
2014	29	74.6	46.8
2013	24	74.2	47.8
2012	49	71.6	46.2
2011	85	66.9	44.1
2010	109	64.5	42.7
2009	15	74.9	48.3
2008	33	73.2	47.7
2007	10	76.6	48.3
2006	26	73.9	48.0
2005	43	70.4	48.4
2004	52	70.3	47.1
2003	50	70.9	46.6
2002	47	71.9	46.4
2001	19	75.7	47.0
2000	40	71.6	47.8
1999	82	68.9	42.6
1998	75	66.4	46.2
1997	8	76.6	49.3
1996	88	67.1	43.7
1995	68	69.0	44.7
1994	25	74.7	47.2
1993	7	76.8	49.3
1992	4	81.4	47.0
1991	91	68.1	41.7
1990	84	68.3	43.0
1989	77	71.3	41.2
1988	60	72.4	43.4
1987	12	76.1	48.3
1986	48	73.2	44.9
1985	57	72.4	44.4
1984	94	66.5	43.0
1983	72	68.8	44.2
1982	93	69.2	40.5
1981	95	67.4	41.9
1980	67	68.5	45.9
1979	62	71.9	43.6
1978	100	67.2	41.4
1977	107	65.1	42.1
1976	45	74.6	43.9
1975	79	69.0	43.3
1974	89	68.8	42.0
1973	34	75.3	45.6
1972	31	74.9	46.3
1971	35	72.6	47.3
1970	66	70.5	44.5
1969	23	76.2	45.9
1968	61	71.6	44.0
1967	73	71.4	41.5
1966	18	77.2	45.7
1965	92	67.9	41.9
1964	90	68.7	41.4
1963	28	72.9	48.8
1962	80	68.1	43.8
1961	59	72.6	43.2
1960	97	68.4	40.5
1959	111	65.3	40.1
1958	3	78.2	50.4
1957	58	69.2	47.1
1956	42	72.0	46.9
1955	108	65.6	41.6
1954	36	75.2	44.6
1953	112	64.1	40.2
1952	65	71.0	44.1
1951	70	69.7	43.8
1950	104	67.9	40.2
1949	17	74.8	48.2
1948	76	69.0	43.6
1947	11	76.4	48.1
1946	64	71.1	44.2
1945	71	69.0	44.2
1944	53	72.3	44.8
1943	105	66.8	41.1
1942	110	64.2	41.8
1941	55	71.0	45.9
1940	21	76.3	46.3
1939	20	78.4	44.3
1938	86	69.4	41.5
1937	37	76.7	42.9
1936	16	78.0	45.2
1935	81	71.7	40.1
1934	5	80.9	47.2
1933	103	68.3	39.9
1932	54	72.2	44.9
1931	14	81.3	42.2
1930	44	76.3	42.2
1929	63	75.4	40.1
1928	2	81.7	47.5
1927	106	66.5	40.9
1926	56	73.8	43.1
1925	22	75.9	46.2
1924	9	80.1	45.1
1923	78	69.6	42.9
1922	83	70.6	40.7
1921	69	70.6	42.9
1920	101	68.8	39.9
1919	51	75.1	42.4
1918	102	70.6	37.8
1917	99	68.0	40.8
1916	113	67.1	36.8
1915	96	66.4	42.7
1914	30	77.9	43.4
1913	46	74.7	43.7
1912	74	71.0	41.7
1911	98	68.6	40.2

Weather Station Details

Years	Station	Coordinates
1940–2024		location
1911–1939	Meridian 1 W	location