Boston, MA: May

31 May 2026: May 2026 averaged 60.8°F in Boston, MA, the warmest May since 2021, 20th warmest of 154.

May 2026

Mean temperature: 60.8°F; Warmest since 2021; 20th warmest of 154
Precipitation: 2.09 in; Driest since 2022; 43rd driest of 155

A normal May in Boston, MA (1991 to 2020): a mean temperature of 58.5°F, between 56°F and 62.1°F in eight years of ten and 2.87 in of precipitation, between 1.23 in and 4.57 in in eight years of ten.

The mean temperature of every May in Boston, MA since 1872: 60.8°F in 2026; the highest is 63.7°F, in 1880.

Normal range, 56 to 62.1°F

Every year, ranked, as a table

Every May in Boston, MA from 1872 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	60.8	20	69.5	29	52.2	17	2.09	113	0
2025	59.2	55	66.4	79	51.9	27	7.25	5	0
2024	59.7	42	66.8	66	52.6	10	4.82	25	0
2023	60.1	38	69.3	35	51	37	2.25	110	0
2022	60.6	22	68.7	39	52.4	15	1.32	135	0
2021	61.4	13	69.9	24	52.9	7	4.92	22	0
2020	56.8	105	65.7	93	47.8	125	2.21	111	0
2019	57.8	80	65.2	103	50.5	55	3.35	67	0
2018	62.1	11	71.7	12	52.5	11	1.90	117	0
2017	56.3	114	62.5	141	50.2	65	3.45	61	0
2016	58.6	65	66.5	73	50.7	47	2.83	88	0
2015	62.3	10	73.2	4	51.4	30	1.22	140	0
2014	58.7	64	66.4	79	51	37	2.86	85	0
2013	58.8	62	67.3	59	50.4	61	3.22	74	0
2012	60.3	27	66.5	73	54	1	3.43	62	0
2011	59.2	55	66	87	52.5	11	3.23	73	0
2010	62.8	5	72	10	53.6	3	2.90	82	0
2009	59.5	47	67.7	50	51.3	31	2.69	99	0
2008	57.7	83	65.5	98	49.9	75	2.73	94	0
2007	61.4	13	70.7	17	52	21	3.70	55	0
2006	57	101	64	125	50.1	69	12.48	2	0
2005	52.2	151	58.1	154	46.2	144	3.98	48	0
2004	58.8	62	67.3	59	50.4	61	3.07	79	0
2003	55.1	137	62.3	143	47.9	121	4.12	45	0
2002	57.7	83	66.7	69	48.7	101	4.48	31	0
2001	59.5	47	68	48	51.1	35	1.23	139	0
2000	57.2	95	65.9	88	48.5	109	2.88	83	0
1999	58.2	73	65.6	97	50.7	47	2.70	97	0
1998	60.3	27	68.7	39	51.9	27	6.84	6	0
1997	56.1	120	64.2	121	48	118	2.63	101	0
1996	57.4	93	65.8	91	48.9	95	2.73	94	0
1995	57.2	95	65.3	101	49.1	92	1.82	120	0
1994	58.4	70	67.4	56	49.3	87	5.35	11	0
1993	60.3	27	68.6	42	52	21	1.04	143	0
1992	55.5	130	63.5	132	47.6	129	1.40	133	0
1991	63.2	3	73.3	3	53.2	5	0.92	149	0
1990	54.9	142	62.2	144	47.5	133	6.53	7	0
1989	59.3	52	67.4	56	51.3	31	3.54	59	0
1988	57.6	87	65.3	101	49.9	75	2.86	85	0
1987	57.1	100	66.1	85	48.2	114	1.75	122	0
1986	58.4	70	66.8	66	50	72	1.31	136	0
1985	59.2	55	68.7	39	49.8	77	3.36	66	0
1984	58	75	66.2	84	49.8	77	8.77	3	0
1983	58.1	74	65.5	98	50.8	42	2.94	81	0
1982	57.8	80	64.7	111	50.8	42	2.58	102	0
1981	60.4	25	69.5	29	51.3	31	1.17	141	0
1980	59.4	50	67.6	52	51.2	34	2.30	109	0
1979	61.1	17	68.5	43	53.7	2	4.24	41	0
1978	59.3	52	66.5	73	52.1	20	4.50	30	0
1977	62.6	7	73	6	52.2	17	3.52	60	0
1976	60.2	35	69.4	34	51	37	1.98	115	0
1975	61.4	13	70.9	14	52	21	1.78	121	0
1974	54.7	144	61.7	147	47.6	129	2.87	84	0
1973	57	101	64.3	120	49.6	81	3.76	51	0
1972	57.6	87	65.8	91	49.4	84	5.26	13	0
1971	55.7	129	63.7	127	47.6	129	3.72	53	0
1970	59.6	46	68.4	44	50.8	42	3.01	80	0
1969	58.5	68	66.6	72	50.3	63	1.96	116	0
1968	56.1	120	62.9	136	49.3	87	3.26	72	0
1967	51.6	152	59.2	153	44.1	153	7.32	4	0
1966	57.2	95	65.2	103	49.3	87	2.66	100	0
1965	59.5	47	69.6	28	49.4	84	0.93	148	0
1964	60.3	27	70.4	19	50.2	65	0.53	152	0
1963	59.4	50	69.3	35	49.5	82	2.86	85	0
1962	57.2	95	65.7	93	48.7	101	1.86	118	0
1961	56.3	114	64.4	117	48.2	114	4.51	28	0
1960	59.7	42	67.4	56	52	21	3.80	49	0
1959	62.6	7	72.7	8	52.5	11	1.24	138	0
1958	56.6	107	64.5	114	48.6	105	4.45	34	0
1957	59.8	41	69	38	50.7	47	3.63	56	0
1956	55.4	133	65.5	98	45.3	151	1.85	119	0
1955	62.7	6	73.2	4	52.3	16	0.99	146	0
1954	56.3	114	63.3	134	49.3	87	13.38	1	0
1953	58.4	70	66.7	69	50.1	69	5.06	21	0
1952	57.2	95	65.1	106	49.2	91	3.57	58	0
1951	59.1	58	68.4	44	49.8	77	4.81	26	0
1950	55.8	125	64.2	121	47.3	138	1.55	131	0
1949	60.3	27	70	23	50.7	47	2.53	104	0
1948	55	141	62.1	145	47.8	125	5.37	10	0
1947	56.9	104	65.9	88	47.9	121	4.36	37	0
1946	58	75	67.3	59	48.7	101	4.91	23	0
1945	55.1	137	62.9	136	47.4	136	4.47	33	0
1944	63.2	3	72.9	7	53.5	4	0.25	155	0
1943	57.6	87	65.7	93	49.4	84	4.56	27	0
1942	60.7	21	69.5	29	52	21	2.11	112	0
1941	59.9	40	69.2	37	50.5	55	2.43	107	0
1940	56.3	114	63.7	127	48.8	98	3.28	71	0
1939	56.4	113	64.8	110	48	118	1.29	137	0
1938	55.8	125	63.7	127	47.8	125	4.42	36	0
1937	59.1	58	68.1	47	50.1	69	2.52	105	0
1936	60.6	22	71.1	13	50.2	65	1.70	123	0
1935	55.5	130	64	125	47	139	1.35	134	0
1934	60.6	22	70.2	20	51	37	1.56	129	0
1933	61.6	12	70.8	16	52.5	11	2.74	93	0
1932	60.3	27	69.9	24	50.6	53	1.63	127	0
1931	60.3	27	70.1	22	50.5	55	4.51	28	0
1930	59.7	42	68.3	46	51.1	35	3.39	63	0
1929	61	18	71.9	11	50	72	2.82	90	0
1928	55.3	134	62.8	139	47.9	121	3.08	77	0
1927	55.2	135	62.5	141	47.9	121	2.50	106	0
1926	56	122	64.4	117	47.7	128	3.31	68	0
1925	57.4	93	66.5	73	48.4	111	2.57	103	0
1924	56.2	118	63.6	130	48.8	98	2.81	91	0
1923	57.6	87	66.5	73	48.6	105	0.83	150	0
1922	61.4	13	70.9	14	52	21	5.34	12	0
1921	58	75	66.1	85	50	72	3.63	56	0
1920	54.6	145	61.8	146	47.5	133	5.26	13	0
1919	59.1	58	67.5	53	50.7	47	4.25	40	0
1918	63.3	2	73.4	2	53.2	5	1.99	114	0
1917	50.7	153	57.7	155	43.7	154	4.45	34	0
1916	58.6	65	66.8	66	50.5	55	2.83	88	0
1915	56.6	107	65.1	106	48	118	1.64	126	0
1914	60	39	69.9	24	50.6	53	2.78	92	2
1913	55.1	137	62.8	139	47.5	133	3.22	74	0
1912	58.6	65	66.7	69	50.5	55	4.04	46	0
1911	62.5	9	72.1	9	52.8	8	0.35	153	0
1910	57.6	87	64.7	111	50.5	55	1.02	145	0
1909	55.8	125	63.4	133	48.3	112	2.33	108	0
1908	59	61	67.2	62	50.8	42	3.78	50	0
1907	52.5	150	60.2	151	44.7	152	3.12	76	0
1906	58	75	67.1	63	49	93	4.91	23	0
1905	57.6	87	66.4	79	48.9	95	1.47	132	0
1904	60.9	19	69.5	29	52.2	17	3.38	64	0
1903	58.5	68	67.5	53	49.5	82	0.32	154	0
1902	57.8	80	67	65	48.6	105	1.07	142	0
1901	54.3	147	61	148	47.6	129	6.31	8	0
1900	55.2	135	65	109	45.4	150	5.07	20	0
1899	57.7	83	66.5	73	49	93	0.81	151	0
1898	55.9	123	62.9	136	48.8	98	4.33	38	0
1897	57.7	83	65.7	93	49.7	80	4.00	47	0
1896	60.3	27	69.8	27	50.8	42	1.68	124	0
1895	60.4	25	70.7	17	50.3	63	2.71	96	2
1894			67.1	63	48.6	105	4.15	43	5
1893	56.2	118	64.4	117	48.3	112	5.23	15	2
1892	55.9	123	63.1	135	48.7	101	5.15	18	0
1891	55.8	125	64.6	113	47	139	1.56	129	0
1890	57	101	65.2	103	48.9	95	4.48	31	0
1889	60.2	35	69.5	29	51	37	4.15	43	0
1888	53.1	149	60.6	150	45.5	147	5.20	16	0
1887	59.7	42	67.5	53	51.8	29	1.67	125	0
1886	56.7	106	65.1	106	48.2	114	3.08	77	0
1885	53.2	148	60.7	149	45.6	146	4.26	39	0
1884	54.9	142	64.2	121	45.5	147	3.31	68	0
1883	56.6	107	65.9	88	47.4	136	5.11	19	0
1882	50.5	154	59.7	152	41.4	155	6.05	9	0
1881	56.6	107	66.4	79	46.7	141	4.16	42	0
1880	63.7	1	74.7	1	52.7	9	1.63	127	0
1879	60.2	35	70.2	20	50.2	65	0.97	147	0
1878	56.5	111	64.5	114	48.5	109	1.03	144	0
1877	55.1	137	64.2	121	45.9	145	3.38	64	0
1876	54.6	145	63.6	130	45.5	147	2.70	97	0
1875	57.9	79	67.7	50	48.1	117	3.76	51	0
1874	55.5	130	64.5	114	46.4	143	3.71	54	0
1873	56.5	111	66.3	83	46.7	141	5.16	17	0
1872	59.3	52	68	48	50.7	47	3.29	70	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1880	63.7
1918	63.3
1991	63.2
1944	63.2
2010	62.8
1955	62.7
1977	62.6
1959	62.6
1911	62.5
2015	62.3

Coldest
Year	Mean, °F
1882	50.5
1917	50.7
1967	51.6
2005	52.2
1907	52.5
1888	53.1
1885	53.2
1901	54.3
1920	54.6
1876	54.6

Wettest
Year	Precipitation, in
1954	13.38
2006	12.48
1984	8.77
1967	7.32
2025	7.25
1998	6.84
1990	6.53
1901	6.31
1882	6.05
1948	5.37

Driest
Year	Precipitation, in
1944	0.25
1903	0.32
1911	0.35
1964	0.53
1899	0.81
1923	0.83
1991	0.92
1965	0.93
1879	0.97
1955	0.99

The hottest, coldest and wettest days

Hottest day: 96°F; 19 May 2026
Coldest night: 42°F; 9 May 2026
Wettest day: 0.38 in; 24 May 2026

Every month, season and year

Months

Seasons

Years

Boston, MA the day's answers

All-time records

Every answer in words

May 2026 brought 2.09 in of precipitation in Boston, MA, the driest May since 2022, 43rd driest of 155.
The hottest day of May 2026 in Boston, MA: 96°F on Tuesday 19 May 2026.
The coldest night of May 2026 in Boston, MA: a low of 42°F on Saturday 9 May 2026.
The wettest day of May 2026 in Boston, MA: 0.38 in on Sunday 24 May 2026.