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Page 17
2008-10-01
Table 4. Design Outdoor Conditions (cont)
JANUARY
Relative Humidity
(% RH)
JULY
Relative Humidity
(% RH)
State City °C
Dry
Bulb
°F
7:30
A.M.
1:30
P. M .
7:30
P. M.
Dry
Bulb
°F
7:30
A.M.
1:30
P. M.
7:30
P. M.
°C
New Jersey Atlantic City
Newark
Trenton
-15
-18
-18
5
0
0
79
72
73
68
79
62
74
65
68
95
95
95
81
75
77
72
51
55
82
65
68
35
35
35
New Mexico Albuquerque -18 0 68 51 46 95 59 33 28 35
New York Albany
Buffalo
New York
Rochester
-23
-21
-18
-21
-10
-5
0
-5
75
79
72
81
63
72
61
73
71
78
66
79
93
93
95
95
79
78
75
80
52
53
58
50
64
63
68
60
34
34
35
35
North Carolina Asheville
Raleigh
-18
-12
0
10
82
82
59
57
69
69
93
95
88
86
56
55
73
72
34
35
North Dakota Bismarck -34 -30 77 71 75 95 85 52 49 35
Ohio Cincinnati
Cleveland
Columbus
Toledo
-18
-18
-23
-23
0
0
-10
-10
82
81
83
79
70
72
71
72
74
79
76
75
95
95
95
95
84
79
78
76
52
52
52
52
60
58
60
59
35
35
35
35
Oklahoma Oklahoma City -18 0 79 62 65 101 80 49 51 38
Oregon Baker
Portland
-21
12
-5
10
83
87
81
82
78
78
90
90
69
86
68
63
36
48
32
32
Pennsylvania Harrisburg
Philadelphia
Pittsburgh
Scranton
-18
-18
-18
-21
0
0
0
-5
72
74
77
80
49
65
67
67
65
68
63
--
95
95
95
95
78
78
80
77
51
52
52
50
62
64
63
--
35
35
35
35
Rhode Island Providence -18 0 73 60 67 93 79 57 73 34
South Carolina Charleston
Columbia
-9
-12
15
10
87
81
55
57
76
65
95
95
88
83
64
56
82
68
35
35
South Dakota Huron
Rapid City
-29
-29
-20
-20
79
71
72
69
76
67
95
95
86
71
52
42
49
40
35
35
Tennessee Knoxville
Memphis
-18
-18
0
0
83
82
65
67
69
73
95
95
83
85
55
55
66
59
35
35
Texas Amarillo
Corpus Christi
Dallas
El Paso
Houston
San Antonio
-23
-7
-12
-12
-7
-7
-10
20
10
10
20
20
71
88
81
63
85
82
51
66
62
45
66
60
52
75
62
39
73
59
100
95
100
100
95
100
77
93
79
60
90
88
43
58
50
37
58
49
42
68
47
30
66
45
38
35
38
38
35
38
Utah Salt Lake City -23 -10 80 71 72 95 56 27 23 35
Vermont Burlington -23 -10 81 69 78 90 76 54 67 32
Virginia Richmond -9 15 84 60 68 95 81 57 72 35
Washington Seattle
Walla Walla
-9
-21
15
-5
86
80
80
74
74
78
85
95
86
50
63
33
47
22
29
35
West Virginia Charleston
Parkersburg
-18
-23
0
-10
79
82
64
66
70
74
95
95
88
80
53
52
67
65
35
35
Wisconsin Green Bay
Milwaukee
-26
-26
-15
-15
75
76
68
70
73
73
95
95
85
81
58
58
64
64
35
35
Wyoming Cheyenne -26 -15 59 48 55 95 73 36 40 35
Province City
Alberta Calgary
Edmonton
Grande Prairie
Lethbridge
Medicine Hat
-34
-34
-42
-36
-34
-29
-29
-43
-32
-30
71
75
80
66
73
87
86
84
91
96
34
42
38
30
31
31
30
29
33
36
British Columbia Estevan Point
Fort Nelson
Penticton
Prince George
Prince Rupert
Vancouver
-8
-40
-18
-38
-12
-9
17
-40
0
-37
11
15
84
79
81
82
87
87
87
94
85
73
80
80
32
32
44
53
54
41
31
34
29
23
27
27