National Weather Service United States Department of Commerce
October 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
Snow
1
72
51
62
92
1919
31
1947
5
2
.09
0
2
72
50
61
95
1919
30
1974
5
2
.08
0
3
72
50
61
91
1919
28
1974
6
1
.09
0
4
71
50
60
96
1903
27
1974
6
1
.08
0
5
71
49
60
93
1919
30
1965
6
1
.09
0
6
71
49
60
94
1941
30
1965
6
1
.09
0
7
70
48
59
94
1931
30
1964
7
1
.09
0
8
70
48
59
93
2007
30
2001*
7
1
.09
0
9
70
48
59
89
1916
31
1987*
7
1
.08
0
10
69
47
58
92
1930
28
1925
8
1
.09
0
11
69
47
58
90
1930*
25
1964
8
1
.08
0
12
69
47
58
94
1928
29
1906
8
1
.08
0
13
69
46
57
94
1928
28
1988
8
1
.08
0
14
68
46
57
94
1930
26
1988
9
1
.08
0
15
68
46
57
94
1928
29
1979
9
0
.08
0
16
68
45
56
88
1930
32
1945
9
0
.08
0
17
67
45
56
91
1928
28
1970
9
0
.08
0
18
67
45
56
86
1928
26
1969
10
0
.07
0
19
67
44
56
85
1920
27
1992*
10
0
.08
0
20
67
44
55
87
1920
23
1992
10
0
.08
0
21
66
44
55
89
1920
18
1952
10
0
.08
0
22
66
43
55
88
1920
23
1952
11
0
.09
0
23
66
43
54
86
1931
24
1997*
11
0
.09
0
24
65
43
54
86
1920
20
1969
11
0
.09
0
25
65
43
54
85
1991
26
1965*
11
0
.09
0
26
65
42
54
88
1920
24
1962
12
0
.09
0
27
65
42
53
87
1919
17
1962
12
0
.09
0
28
64
42
53
85
1919
22
1976
12
0
.10
0.1
29
64
41
53
86
1927
21
1976
13
0
.09
0
30
64
41
52
86
1927
22
1965
13
0
.10
0
31
63
41
52
84
1927*
26
1980
13
0
.10
0
Totals
67.7
45.4
56.5
96
1903
17
1962
282
21
2.67
0.1

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/snowfall 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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