No. 414. Sunshine, Average Wind Speed, Heating and Cooling Degree Days,
and Average Relative Humidity—Selected Cities
[Airport data, except as noted. For period of record through 1998, except as noted. M=morning. A=afternoon]
State
AL
AK
AZ
AR
CA
CO
CT
DE
DC
FL
GA
HI
ID
IL
IN
IA
KS
KY
LA
ME
MD
MA
MI
MN
MS
MO
MT
NE
NV
NH
NJ
NM
NY
Average
percentage
of possible
sunshine 1
Station
Length
of
record
(yr.)
Average wind speed
(m.p.h.)
Average relative humidity
(percent)
Length
Heat- Cool- Length
of
ing
ing
of
An- record Andegree degree record
nual
(yr.) nual Jan. July
days
days
(yr.)
Annual
Jan.
July
M
A
M
A
M
A
Mobile . . . . .
Juneau . . . . .
Phoenix . . . .
Little Rock . . .
Los Angeles. .
Sacramento . .
San Diego . . .
San Francisco
Denver . . . . .
Hartford . . . .
Wilmington . .
Washington . .
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47
47
57
35
60
49
55
68
61
41
47
48
60
23
81
60
72
73
72
71
67
52
55
55
50 8.8 10.1 6.9
53 8.3 8.0 7.5
53 6.2 5.3 7.1
56 7.8 8.4 6.7
50 7.5 6.7 7.9
48 7.9 7.2 8.9
58 7.0 6.0 7.5
71 10.6 7.2 13.6
47 8.6 8.6 8.3
44 8.4 9.0 7.3
50 9.0 9.8 7.8
50 9.4 10.0 8.3
1,702
8,897
1,350
3,155
1,458
2,749
1,256
3,016
6,020
6,151
4,937
4,047
2,627
4,162
2,005
727
1,237
984
145
679
677
1,046
1,549
36
32
38
34
39
12
38
39
35
39
51
38
87
79
50
83
79
82
77
84
67
77
78
75
59
69
23
57
65
46
63
62
40
52
55
53
82
76
65
80
71
90
72
86
63
72
75
70
63
73
32
62
61
70
58
67
49
56
60
56
90
78
43
86
86
76
82
86
68
79
79
76
62
66
20
55
68
29
67
60
34
51
54
53
Jacksonville .
Miami . . . . .
Atlanta . . . .
Honolulu . . .
Boise . . . . .
Chicago . . .
Peoria. . . . .
Indianapolis .
Des Moines .
Wichita . . . .
Louisville . . .
New Orleans
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47
46
61
47
56
37
52
64
46
39
47
47
61
68
59
74
58
52
53
51
55
62
53
60
49
49
60
49
59
40
55
50
49
45
51
50
7.9
9.2
9.1
11.3
8.7
10.4
9.9
9.6
10.7
12.2
8.3
8.2
8.1 7.0
9.5 7.9
10.4 7.7
9.4 13.1
8.0 8.4
11.7 8.4
11.0 7.8
10.9 7.5
11.4 8.9
12.0 11.3
9.5 6.8
9.3 6.1
1,434
200
2,991
5,861
6,536
6,148
5,615
6,497
4,791
4,514
1,513
2,551
4,198
1,667
4,474
754
752
982
1,014
1,036
1,628
1,288
2,655
62
34
38
29
59
40
39
39
37
45
38
50
89
83
82
72
69
80
83
84
80
80
81
88
56
61
56
56
43
61
63
62
61
56
59
64
87
84
79
81
80
78
80
81
77
79
77
85
58
59
60
61
70
69
70
71
68
64
65
67
89
83
88
68
54
82
87
87
83
79
85
91
59
63
59
51
22
57
61
60
59
50
58
66
Portland . . . . . . . .
Baltimore. . . . . . . .
Boston . . . . . . . . .
Detroit . . . . . . . . .
Sault Ste. Marie . . .
Duluth. . . . . . . . . .
Minneapolis-St. Paul
Jackson . . . . . . . .
Kansas City . . . . . .
St. Louis . . . . . . . .
Great Falls . . . . . .
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54
45
60
37
54
47
57
30
23
47
57
55
58
55
49
43
49
54
59
59
55
51
58
48
41
40
57
49
60
35
26
49
57
8.7
8.9
12.4
10.3
9.2
11.0
10.5
7.1
10.6
9.7
12.6
9.1 7.6
9.6 7.7
13.8 11.0
12.0 8.5
9.6 7.8
11.6 9.4
10.5 9.4
8.3 5.5
11.2 9.2
10.6 8.0
14.9 10.0
7,378
4,707
5,641
6,569
9,316
9,818
7,981
2,467
5,393
4,758
7,741
268
1,137
678
626
131
180
682
2,215
1,288
1,534
388
58
45
34
40
57
37
39
35
26
38
37
79
77
72
81
85
81
79
91
81
82
68
59
54
58
60
67
64
61
59
61
60
46
76
72
68
80
81
77
75
86
77
81
67
61
57
58
70
74
70
68
65
65
67
61
80
80
74
82
89
85
81
94
85
84
68
59
53
56
54
62
60
56
61
60
57
31
Omaha . . . .
Reno . . . . .
Concord . . .
Atlantic City .
Albuquerque
Albany . . . .
Buffalo . . . .
New York 2 .
Charlotte . . .
Raleigh . . . .
Bismarck . . .
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49
53
54
37
56
57
52
42
49
47
56
59
69
55
56
76
49
43
64
59
59
55
62 10.5 10.9 8.8
56 6.6 5.6 7.2
56 6.7 7.3 5.7
40 9.9 10.9 8.3
59 8.9 8.0 8.9
60 8.9 9.8 7.5
59 11.9 14.0 10.3
61 9.3 10.7 7.6
49 7.4 7.8 6.6
49 7.6 8.4 6.7
59 10.2 10.0 9.2
6,300
5,674
7,554
5,169
4,425
6,894
6,747
4,805
3,341
3,457
8,968
1,072
508
328
826
1,244
507
477
1,096
1,582
1,417
488
34
35
33
34
38
33
38
64
38
34
39
81
69
81
82
59
80
80
72
82
85
81
60
32
54
56
29
58
62
56
53
54
58
79
79
76
78
68
78
79
68
78
79
75
66
51
59
59
40
63
73
60
56
55
70
85
61
84
83
59
81
79
75
86
89
85
60
19
51
57
27
55
55
55
56
58
49
Cincinnati . . . .
Cleveland . . . .
Columbus . . . .
Oklahoma City .
Portland . . . . .
Philadelphia . . .
Pittsburgh . . . .
Providence . . .
Columbia. . . . .
Sioux Falls . . .
Memphis . . . . .
Nashville . . . . .
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44
54
46
44
47
55
43
42
48
50
43
54
49
45
48
64
39
56
44
55
60
57
59
57
51
57
49
50
50
58
46
45
50
50
50
57
9.0
10.5
8.3
12.3
7.9
9.5
9.0
10.4
6.8
11.1
8.8
8.0
10.5 7.2
12.2 8.6
9.8 6.5
12.6 10.9
10.0 7.6
10.3 8.2
10.5 7.3
11.1 9.4
7.2 6.3
10.9 9.8
10.0 7.5
9.1 6.5
5,248
6,201
5,708
3,659
4,522
4,954
5,968
5,884
2,649
7,809
3,082
3,729
996
621
797
1,859
371
1,101
654
606
1,966
744
2,118
1,616
36
38
39
33
58
39
38
35
32
35
59
33
82
80
80
80
85
76
79
75
87
82
81
84
60
62
59
56
59
55
57
55
51
62
58
58
80
78
77
78
85
73
76
71
83
78
79
80
69
70
68
60
75
59
66
57
55
70
64
64
86
82
84
80
82
79
83
77
89
84
84
89
57
57
56
51
45
54
54
56
54
56
58
58
WV
WI
WY
Dallas-Fort Worth
El Paso. . . . . . .
Houston . . . . . .
Salt Lake City . .
Burlington . . . . .
Norfolk . . . . . . .
Richmond . . . . .
Seattle-Tacoma 3
Spokane . . . . . .
Charleston. . . . .
Milwaukee . . . . .
Cheyenne . . . . .
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42
53
26
69
52
47
50
51
48
47
55
60
64
80
56
62
44
58
56
38
48
48
52
64
45
56
29
69
55
50
50
50
51
51
58
41
10.7
8.8
7.8
8.8
9.0
10.6
7.7
8.9
8.9
5.9
11.5
12.9
11.0 9.8
8.3 8.3
8.2 6.9
7.5 9.5
9.8 8.0
11.5 8.9
8.1 6.9
9.6 8.2
8.8 8.6
7.1 4.8
12.6 9.7
15.3 10.4
2,407
2,708
1,599
5,765
7,771
3,495
3,963
4,908
6,842
4,646
7,324
7,326
2,603
2,094
2,700
1,047
388
1,422
1,348
190
398
1,031
479
285
35
38
29
39
33
50
64
39
39
51
38
39
82
56
90
67
77
78
83
83
78
83
80
65
57
27
61
43
59
57
53
62
52
56
65
45
80
65
86
79
73
75
80
81
85
78
76
57
61
35
66
69
64
59
57
74
79
63
69
50
81
61
93
52
79
81
85
81
65
90
82
70
50
29
58
22
53
59
56
49
28
59
62
38
PR
San Juan . . . . . . . .
40
76
43
8.4
-
5,558
43
79
65
82
64
79
67
NC
ND
OH
OK
OR
PA
RI
SC
SD
TN
TX
UT
VT
VA
WA
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8.4
9.7
- Represents zero. 1 Percent of days that are either clear or partly cloudy. Period of record through 1997.
for sunshine. 3 Does not represent airport data.
2
Airport data
Source: U.S. National Oceanic and Atmospheric Administration, Comparative Climatic Data, annual.
250
Geography and Environment
U.S. Census Bureau, Statistical Abstract of the United States: 2000