September Daily/Monthly Normals for Charleston

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September Daily/Monthly Normals for Charleston
(see notes below table)
Date	Normal High	Normal Low	Average	Record High	RH Year	Record Low	RL Year	HDD	CDD	Precip
1	83	62	72	104	1932	47	1946	0	7	.11
2	82	62	72	104	1932	44	1949	0	7	.11
3	82	61	72	101	1953	45	1967	0	7	.12
4	82	61	71	100	1925	44	1997	0	7	.11
5	81	61	71	99	1925	41	1902	0	6	.12
6	81	61	71	98	1930	45	1950	0	6	.11
7	81	60	71	101	1929	45	1988	0	6	.10
8	81	60	70	97	1929	45	1951	1	6	.11
9	80	60	70	96	1964	43	1986*	1	5	.11
10	80	59	70	100	1925	42	1956*	1	5	.11
11	80	59	69	99	1931	41	1917*	1	5	.11
12	79	58	69	101	1931	42	1943	1	5	.11
13	79	58	69	102	1931	42	1917	1	4	.11
14	79	58	68	98	1931	38	1985*	1	4	.12
15	78	57	68	98	1928	40	1985*	1	4	.11
16	78	57	67	99	1931	41	2007*	2	4	.10
17	77	57	67	100	1931	39	2000	2	4	.12
18	77	56	67	95	1925	35	1937	2	4	.11
19	77	56	66	97	1925	36	1937	2	3	.10
20	76	55	66	96	1931	36	1937	2	3	.11
21	76	55	65	100	1931	34	1956	3	3	.11
22	76	55	65	102	1931	39	1999*	3	3	.11
23	75	54	65	98	1930	35	1947	3	3	.10
24	75	54	64	96	1930	34	1983*	3	2	.11
25	74	53	64	93	2007	35	1967	3	2	.10
26	74	53	63	93	1908	33	1928	4	2	.10
27	74	52	63	93	1929	35	1947	4	2	.11
28	73	52	63	98	1929	33	1942	4	2	.10
29	73	52	62	97	1929	32	1942	5	2	.10
30	73	51	62	94	1953	34	1947	5	2	.10
Totals	77.8	56.9	67.3	104	1932	32	1942	56	127	3.25

NOTES:

Temperatures are degrees F, precipitation is inches of liquid. All normals are based on the period 1981-2010.
RH Year=Year of record high, RH Low=Year of record low. Temperature records for Charleston began in 1901.
HDD=Heating degree days, CDD=Cooling degree days
An asterisk (*) after the year of occurrence of record highs and lows indicates the record was reached more than once, with the indicated year being the most recent.
Daily normal precipitation values are more appropriate for calculating normals over a period of at least several days, rather than on a strict day-to-day basis.
Averages/totals may differ slightly from expected due to rounding.

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