Charleston, SC: May

31 May 2026: May 2026 averaged 73.7°F in Charleston, SC, the warmest May since 2025, tied 28th warmest of 90 (with 1952).

May 2026

Mean temperature: 73.7°F; Warmest since 2025; 28th warmest of 90
Precipitation: 3.56 in; Wettest since 2025; 42nd wettest of 90

A normal May in Charleston, SC (1991 to 2020): a mean temperature of 73.6°F, between 70.4°F and 76°F in eight years of ten and 3.02 in of precipitation, between 1.27 in and 5.48 in in eight years of ten.

The mean temperature of every May in Charleston, SC since 1937: 73.7°F in 2026; the highest is 78.1°F, in 2019.

Normal range, 70.4 to 76°F

Every year, ranked, as a table

Every May in Charleston, SC from 1937 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
2026	73.7	28	83.4	40	64	21	3.56	42
2025	75.6	10	85.3	13	66	6	7.39	9
2024	76.5	3	86.3	7	66.8	4	2.14	64
2023	71.4	67	81.1	75	61.7	49	2.98	50
2022	75.5	11	85.1	15	66	6	2.74	53
2021	71.6	61	82.7	57	60.5	66	3.46	43
2020	72	52	81.9	67	62.1	43	3.64	40
2019	78.1	1	88.6	1	67.6	2	1.64	74
2018	76	6	85.2	14	66.9	3	10.62	1
2017	74.3	22	84.6	20	64	21	3.74	36
2016	73.8	26	83.5	38	64.2	19	6.66	11
2015	73.3	31	83.4	40	63.1	31	1.36	78
2014	76.1	5	86.6	5	65.5	11	1.49	77
2013	71.7	55	81.5	69	61.9	45	2.99	48
2012	75	16	84.6	20	65.3	12	3.06	45
2011	74.4	19	84.5	25	64.3	18	0.41	89
2010	75.5	11	84.7	19	66.3	5	3.67	38
2009	73.3	31	82.5	62	64.2	19	6.45	12
2008	71.7	55	82.5	62	61	57	3.66	39
2007	71.3	70	82.7	57	60	74	0.93	82
2006	72.2	48	82.9	51	61.5	50	2.72	54
2005	69.9	81	80.5	82	59.2	82	5.17	18
2004	75.7	9	85.8	9	65.7	8	3.04	46
2003	73.9	25	83.2	45	64.7	15	4.79	23
2002	71.4	67	82.5	62	60.2	71	2.39	59
2001	72.5	42	84.6	20	60.5	66	1.36	78
2000	75.5	11	86.6	5	64.5	16	0.57	88
1999	70.4	77	81.4	72	59.4	80	3.95	34
1998	75.1	15	85.4	10	64.8	14	4.63	28
1997	69.2	87	79.5	86	58.8	83	2.04	66
1996	74.4	19	84.9	17	63.8	26	1.72	72
1995	76	6	86.3	7	65.6	9	1.31	81
1994	71.1	72	81.5	69	60.7	60	2.35	60
1993	72.5	42	82.6	61	62.4	39	2.67	55
1992	70.3	79	80.5	82	60.1	72	5.07	19
1991	76.3	4	84.5	25	68.1	1	5.37	16
1990	74.4	19	84.4	29	64.4	17	1.91	67
1989	72.3	46	83.2	45	61.4	52	2.14	64
1988	71.9	54	83	49	60.7	60	1.86	68
1987	73.2	33	83.7	36	62.8	34	2.29	62
1986	74.3	22	85.4	10	63.2	30	0.93	82
1985	73.5	30	83.8	34	63.3	29	2.79	52
1984	71.6	61	81.1	75	62.2	42	6.89	10
1983	71.7	55	80.9	77	62.5	37	0.75	85
1982	72.2	48	82.8	54	61.5	50	3.04	46
1981	70.8	75	83.1	47	58.4	85	4.02	33
1980	71.4	67	82	65	60.7	60	5.85	14
1979	72.4	44	81.9	67	62.9	33	8.09	6
1978	72	52	82	65	61.9	45	4.68	26
1977	72.8	39	84.3	30	61.3	55	4.66	27
1976	70.3	79	80.7	80	59.8	76	8.87	4
1975	75	16	85.1	15	65	13	5.06	20
1974	74	24	84.1	32	63.9	24	4.82	22
1973	71.7	55	82.7	57	60.7	60	1.83	70
1972	69.8	83	79.4	87	60.1	72	5.67	15
1971	71.1	72	81.5	69	60.7	60	4.15	32
1970	72.7	40	84.5	25	60.8	59	3.78	35
1969	69.9	81	80.5	82	59.3	81	2.34	61
1968	71.7	55	82.9	51	60.5	66	2.54	57
1967	71.3	70	82.8	54	59.8	76	8.91	3
1966	70.6	76	79.4	87	61.8	48	7.71	7
1965	75.3	14	87.1	4	63.5	27	1.32	80
1964	73	36	84.2	31	61.9	45	4.77	24
1963	71.5	64	82.8	54	60.3	70	1.70	73
1962	75.9	8	87.8	3	63.9	24	1.81	71
1961	69.5	86	79.4	87	59.5	79	5.23	17
1960	72.2	48	83.8	34	60.6	65	2.26	63
1959	73.1	34	82.7	57	63.4	28	4.91	21
1958	70.9	74	80.8	78	61	57	4.43	30
1957	71.5	64	80.8	78	62.3	40	9.28	2
1956	73	36	83.5	38	62.5	37	4.62	29
1955	73.8	26	84.5	25	63	32	1.84	69
1954	67.9	90	78.5	90	57.3	87	3.18	44
1953	77.1	2	88.6	1	65.6	9	2.43	58
1952	73.7	28	84.6	20	62.7	36	4.75	25
1951	69.8	83	83.1	47	56.6	88	0.70	86
1950	72.9	38	83	49	62.8	34	3.74	36
1949	71.6	61	83.4	40	59.8	76	4.30	31
1948	72.3	46	83.3	44	61.4	52	8.30	5
1947	72.4	44	83.6	37	61.1	56	3.64	40
1946	71.7	55	81.2	73	62.3	40	7.57	8
1945	69.2	87	80	85	58.5	84	2.56	56
1944	73.1	34	84.9	17	61.4	52	0.68	87
1943	72.7	40	83.4	40	62	44	1.61	75
1942	72.2	48	83.9	33	60.4	69	2.99	48
1941	70.4	77	84.6	20	56.3	89	0.27	90
1940	68.1	89	80.7	80	55.6	90	0.90	84
1939	69.8	83	81.2	73	58.4	85	5.95	13
1938	74.7	18	85.4	10	64	21	2.92	51
1937	71.5	64	82.9	51	60	74	1.57	76

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2019	78.1
1953	77.1
2024	76.5
1991	76.3
2014	76.1
2018	76
1995	76
1962	75.9
2004	75.7
2025	75.6

Coldest
Year	Mean, °F
1954	67.9
1940	68.1
1997	69.2
1945	69.2
1961	69.5
1972	69.8
1951	69.8
1939	69.8
2005	69.9
1969	69.9

Wettest
Year	Precipitation, in
2018	10.62
1957	9.28
1967	8.91
1976	8.87
1948	8.30
1979	8.09
1966	7.71
1946	7.57
2025	7.39
1984	6.89

Driest
Year	Precipitation, in
1941	0.27
2011	0.41
2000	0.57
1944	0.68
1951	0.70
1983	0.75
1940	0.90
2007	0.93
1986	0.93
1995	1.31

The hottest, coldest and wettest days

Hottest day: 91°F; 28 May 2026, 27 May 2026, 11 May 2026
Coldest night: 46°F; 3 May 2026
Wettest day: 1.10 in; 24 May 2026

Every month, season and year

Months

Seasons

Years

Charleston, SC the day's answers

All-time records

Every answer in words

May 2026 brought 3.56 in of precipitation in Charleston, SC, the wettest May since 2025, 42nd wettest of 90.
The hottest day of May 2026 in Charleston, SC: 91°F on Thursday 28 May 2026, Wednesday 27 May 2026 and Monday 11 May 2026.
The coldest night of May 2026 in Charleston, SC: a low of 46°F on Sunday 3 May 2026.
The wettest day of May 2026 in Charleston, SC: 1.10 in on Sunday 24 May 2026.