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Page 16
2008-10-01
Table 4. Design Outdoor Conditions
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
Alabama Birmingham
Mobile
-12
-12
10
10
81
--
61
--
66
--
95
95
84
90
56
64
68
78
35
35
Arizona Flagstaff
Phoenix
Yuma
-23
-4
-1
-10
25
30
83
75
56
58
47
37
--
39
27
90
105
110
77
53
51
36
31
31
--
23
23
32
41
44
Arkansas Little Rock -15 5 80 67 68 95 85 55 59 35
California Eureka
Fresno
Los Angeles
Sacramento
San Diego
San Francisco
-1
-4
2
-1
2
2
30
25
35
30
35
35
87
93
63
90
76
84
--
80
46
82
58
68
77
66
51
70
60
70
90
105
90
100
85
85
92
61
85
76
86
92
--
36
50
46
68
75
80
20
54
28
65
78
32
41
32
38
29
29
Colorado Denver
Grand Junction
Pueblo
-23
-26
-29
-10
-15
-20
54
77
67
37
64
44
41
64
48
95
95
95
55
48
73
27
27
34
30
22
35
35
35
35
Connecticut New Haven -18 0 75 65 69 95 77 64 74 35
Delaware Wilmington -18 0 77 62 70 95 80 52 69 35
District of
Columbia
Washington -18 0 73 56 64 95 78 52 64 35
Florida Jacksonville
Miami
-4
2
25
35
89
87
56
59
75
75
95
91
85
83
57
64
76
76
35
33
Georgia Atlanta
Augusta
Savannah
-12
-12
-7
10
10
20
80
84
83
64
59
58
69
69
72
95
98
95
83
83
85
57
55
61
68
69
80
35
37
35
Idaho Boise
Lewiston
-23
-20
-10
-5
82
79
75
73
74
71
95
95
54
64
34
37
23
25
35
35
Illinois Cairo
Chicago
Peoria
-18
-23
-23
0
-10
-10
81
81
83
69
70
72
--
75
77
98
95
96
83
78
81
57
51
53
--
55
58
37
35
35
Indiana Fort Wayne
Indianapolis
Terre Haute
-23
-23
-18
-10
-10
0
84
83
82
75
72
70
81
78
76
95
95
95
84
84
77
53
54
50
58
60
56
35
35
35
Iowa Davenport
Sioux City
-26
-29
-15
-20
--
78
--
67
--
72
95
95
--
86
--
55
--
54
35
35
Kansas Dodge City
Topeka
-23
-23
-10
-10
78
78
57
64
61
67
95
100
77
85
45
54
52
54
35
38
Kentucky Louisville -18 0 78 68 69 95 77 52 57 35
Louisiana New Orleans
Shreveport
-7
-7
20
20
85
83
67
67
73
66
95
100
84
86
64
56
72
62
35
38
Maine Portland -21 -58165749078587632
Maryland Baltimore -18 07268569571526535
Massachusetts Boston -18 0 72 59 67 92 72 55 70 33
Michigan Detroit
Grand Rapids
-23
-23
-10
-10
82
85
71
78
77
80
95
95
74
76
50
51
56
54
35
35
Minnesota Duluth
Minneapolis
-32
-29
-25
-20
78
82
74
72
74
75
93
95
87
82
61
54
66
54
33
35
Mississippi Vicksburg -12 10 82 65 67 95 87 61 70 35
Missouri
Kansas City
St. Louis
-23
-18
-10
0
78
77
64
65
66
68
100
95
76
73
48
50
47
55
38
35
Montana Billings
Butte
-32
-29
-25
-20
67
76
73
70
60
71
90
95
65
82
40
36
33
33
32
35
Nebraska North Platte
Omaha
-29
-23
-20
-10
80
82
62
68
66
73
85
95
84
80
50
51
46
51
29
35
Nevada Reno -21 -58267549572252035
New HampshireConcord -26-157860699080496932