Raleigh, N.C.
H
I S T O R I C A L
W
E A T H E R
D
A T A
Average Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
59.3
38.9
42
50.4
59
67
74.3
78.1
77.1
71.1
60.1
51.2
42.6
°C
15
3
5
10
15
19
23
25
25
21
15
10
5
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Average High Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
70.1
48.9
52.6
62.1
71.7
78.6
85
88
86.8
81.1
71.6
62.6
52.7
°C
21
9
11
16
22
25
29
31
30
27
22
17
11
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Average Low Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
48.4
28.8
31.3
38.7
46.2
55.3
63.6
68.1
67.5
61.1
48.4
39.7
32.4
°C
9
-1
0
3
7
12
17
20
19
16
9
4
0
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Highest Recorded Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
105
79
84
92
95
97
104
105
105
104
98
88
79
°C
40
26
28
33
35
36
40
40
40
40
36
31
26
Years Charted: 49
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Lowest Recorded Temperature
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
°F
-9
-9
5
11
23
31
38
48
46
37
19
11
4
°C
-22
-22
-15
-11
-5
0
3
8
7
2
-7
-11
-15
Years Charted: 49
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Days Below 32°F/0°C
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
77
20
17
10
2
---
0
0
0
0
1
9
17
Years Charted: 29
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Precipitation
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
in.
41.43
3.48
3.69
3.77
2.59
3.92
3.68
4.01
4.02
3.19
2.86
2.98
3.24
mm
1052
88
93
95
65
99
93
101
102
81
72
75
82
Years Charted: 30
Source:
National Weather Service, San Francisco
Results based on data collected from 1961 - 1990
Average Snowfall
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
in.
7
2.2
2.6
1.3
0
0
0
0
0
0
0
0.1
0.8
mm
177
55
66
33
0
0
0
0
0
0
0
2
20
Years Charted: 49
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Wind Speed
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
mph
7.8
8.5
8.9
9.3
9
7.7
7
6.7
6.4
6.8
7.1
7.6
8
km/h
12
13
14
14
14
12
11
10
10
10
11
12
12
Years Charted: 44
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Days of Precipitation
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
112
10
10
10
9
10
9
11
10
8
7
8
9
Years Charted: 49
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Days With Sunshine
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
%
58
53
56
60
63
58
61
60
58
58
61
57
53
Years Charted: 39
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Cloudy Days
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
149
15
13
14
11
13
10
12
12
11
11
12
14
Years Charted: 45
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Partly Cloudy Days
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
106
7
6
8
9
10
12
12
12
9
7
7
7
Years Charted: 45
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Mean Number of Clear Days
Total
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
Days
111
9
9
9
10
8
8
7
7
10
13
11
10
Years Charted: 45
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Morning Relative Humidity
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
%
85
79
77
80
81
86
87
89
92
92
89
84
80
Years Charted: 29
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
Average Afternoon Relative Humidity
Year
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
%
54
55
52
49
45
54
56
58
60
58
53
52
55
Years Charted: 29
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
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