San Francisco, Calif.
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
57
51.1
54.4
54.9
56
56.6
58.4
59.1
60.1
62.3
62
57.2
51.7
°C
13
10
12
12
13
13
14
15
15
16
16
14
10
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
62.7
56.3
60
60.8
62.1
62.7
64.1
64.6
65.6
68.7
68.7
62.7
56.4
°C
17
13
15
16
16
17
17
18
18
20
20
17
13
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
51.2
45.8
48.7
49
49.8
50.5
52.6
53.5
54.6
55.9
55.2
51.6
47
°C
10
7
9
9
9
10
11
11
12
13
12
10
8
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
103
79
81
83
94
96
101
103
98
101
102
86
76
°C
39
26
27
28
34
35
38
39
36
38
38
30
24
Years Charted: 57
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
28
30
31
38
40
44
47
47
48
48
45
41
28
°C
-2
-1
0
3
4
6
8
8
8
8
7
5
-2
Years Charted: 57
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
*
---
---
0
0
0
0
0
0
0
0
0
---
Years Charted: 57
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.
19.71
4.06
2.95
3.07
1.29
0.25
0.15
0.04
0.07
0.26
1.26
3.21
3.1
mm
500
103
74
77
32
6
3
1
1
6
32
81
78
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.
0
0
0
0
0
0
0
0
0
0
0
0
0
mm
0
0
0
0
0
0
0
0
0
0
0
0
0
Years Charted: 36
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
8.7
6.7
7.5
8.5
9.5
10.4
10.9
11.2
10.5
9.1
7.6
6.3
6.5
km/h
13
10
12
13
15
16
17
18
16
14
12
10
10
Years Charted: 28
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
67
11
10
11
6
3
1
---
1
2
4
8
10
Years Charted: 57
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.
%
66
56
62
69
73
72
73
66
65
72
70
62
53
Years Charted: 38
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
81
83
81
82
89
89
92
93
87
81
82
80
Years Charted: 7
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.
%
66
63
63
61
61
68
72
74
73
66
60
63
63
Years Charted: 7
Source:
National Weather Service, San Francisco
Results based on data collected through 1993
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