National Weather Service United States Department of Commerce
June 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
78
58
68
96
1925
39
1966
1
4
.16
2
79
58
68
98
1925
35
1966
1
5
.16
3
79
58
69
102
1925
42
1966
1
5
.16
4
79
59
69
97
1925
41
1956
1
5
.15
5
80
59
69
99
1935
42
1988
1
5
.15
6
80
59
70
97
1932
39
1945
1
5
.15
7
80
59
70
97
1933
44
1977
1
6
.15
8
80
60
68
97
1933
37
1977
1
6
.15
9
81
60
70
96
1966
43
1912
1
6
.14
10
81
60
71
98
1999
42
1988*
1
6
.15
11
81
61
71
97
1911
33
1972
0
6
.14
12
82
61
71
96
1984*
39
1972
0
7
.14
13
82
61
72
95
1984*
45
1974
0
7
.14
14
82
62
72
97
1945
41
1933
0
7
.14
15
82
62
72
95
1952*
44
1978
0
7
.14
16
83
62
72
97
1952
46
1961
0
8
.14
17
83
62
73
98
1936
43
1917
0
8
.14
18
83
63
73
98
1936
46
1917
0
8
.14
19
83
63
73
99
1931
47
1999
0
8
.14
20
84
63
73
105
1931
49
1944
0
8
.14
21
84
63
74
98
1953*
46
1980
0
9
.14
22
84
63
74
100
1929
40
1992
0
9
.14
23
84
64
74
97
1914
44
1918
0
9
.14
24
84
64
74
103
1930
45
1918
0
9
.14
25
84
64
74
98
1988*
46
1979
0
9
.14
26
85
64
74
103
1931
48
1979
0
9
.13
27
85
64
75
99
1934
49
1981
0
10
.14
28
85
65
75
102
1934
50
1988*
0
10
.13
29
85
65
75
100
1934
52
1956
0
10
.14
30
85
65
75
102
1931
51
1914
0
10
.13
Totals
82.2
61.6
71.9
105
1931
33
1972
13
220
4.29

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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