National Weather Service United States Department of Commerce
January 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
43
27
35
76
1985
-2
1928
30
0
.10
0.3
2
43
26
34
73
2000
-5
1928
31
0
.09
0.4
3
42
26
34
72
1951
-5
1928
31
0
.10
0.3
4
42
26
34
74
1993*
-9
1918
31
0
.09
0.4
5
42
26
34
70
2007*
-6
1942
31
0
.10
0.3
6
42
26
34
76
1946
-10
1942
31
0
.10
0.4
7
42
26
34
71
2008*
-3
1942
31
0
.10
0.3
8
42
26
34
72
1937
-13
1942
31
0
.09
0.4
9
42
26
34
78
1946
-4
1942
31
0
.10
0.4
10
42
26
34
72
1935
-7
1982
31
0
.09
0.3
11
42
26
34
70
1913
-9
1962
31
0
.10
0.4
12
42
26
34
74
1916
-1
1978
31
0
.09
0.3
13
42
26
34
79
1932
-7
1918
31
0
.10
0.4
14
42
26
34
81
1932
-2
1912
31
0
.09
0.4
15
42
26
34
69
1952
-4
1994
31
0
.10
0.4
16
42
26
34
70
1949
-12
1994
31
0
.10
0.4
17
42
26
34
76
1932
-13
1982
31
0
.09
0.4
18
42
26
34
74
1929
-10
1994
31
0
.10
0.4
19
42
26
34
72
1907
-16
1994
31
0
.10
0.3
20
42
26
34
77
1920
-15
1985
31
0
.09
0.4
21
43
26
34
76
1920
-15
1985
31
0
.10
0.4
22
43
26
34
75
1999
-10
1984
31
0
.09
0.3
23
43
26
35
75
1920
-9
1936
31
0
.10
0.4
24
43
26
35
77
1943
-12
1963
30
0
.09
0.3
25
43
27
35
79
1950
-6
1961
30
0
.10
0.4
26
43
27
35
74
1950
-1
1948
30
0
.10
0.3
27
43
27
35
73
1916
-3
1982
30
0
.09
0.3
28
43
27
35
73
1914
-10
1963
30
0
.11
0.4
29
43
27
35
79
1914
-8
1963
30
0
.10
0.4
30
43
27
35
73
1916
3
1966
30
0
.10
0.4
31
44
27
35
78
2002
2
1965
30
0
.10
0.4
Totals
42.5
26.3
34.4
81
1932
-16
1994
948
0
3.00
11.3

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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