Weather History for San Francisco, CA

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 83 °F 67 °F 58 °F
Mean Temperature 67 °F 59 °F 53 °F
Min Temperature 53 °F 50 °F 47 °F
Degree Days  
Heating Degree Days (base 65) 12 6 0 198
Cooling Degree Days (base 65) 2 0 0 2
Growing Degree Days (base 50) 16 8 2 255
Dew Point  
Dew Point 56 °F 45 °F 34 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 45 mph 14 mph 0 mph
Gust Wind 58 mph 28 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.22 in 30.01 in 29.76 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 05, 2012 Rise Set
Actual Time 6:08 AM PDT 8:03 PM PDT
Civil Twilight 5:40 AM PDT 8:32 PM PDT
Nautical Twilight 5:05 AM PDT 9:07 PM PDT
Astronomical Twilight 4:28 AM PDT 9:44 PM PDT
Moon 8:02 PM PDT (5/5) 5:35 AM PDT (5/5)
Length of Visible Light 14h 52m
Length of Day
13h 54m
Full, 100% of the Moon is Illuminated
May 5
Full
May 5
Full
May 12
Last Quarter
May 20
New
May 28
First Quarter

Weather History Calendar

Precipitation Actual month total 0.00 Normal Month Total: 0.47
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
59 | 49 0.00
Average:
66 | 50 0.03
Partly Cloudy
Actual:
58 | 48 0.00
Average:
66 | 50 0.02
Mostly Cloudy
Actual:
63 | 51 T
Average:
67 | 51 0.02
Partly Cloudy
Actual:
61 | 50 0.00
Average:
67 | 51 0.03
Clear
Actual:
69 | 47 0.00
Average:
67 | 51 0.02
Scattered Clouds
Actual:
78 | 49 0.00
Average:
67 | 51 0.02
Clear
Actual:
83 | 51 0.00
Average:
67 | 51 0.01
Scattered Clouds
Actual:
76 | 50 0.00
Average:
67 | 51 0.02
Scattered Clouds
Actual:
64 | 51 0.00
Average:
67 | 51 0.02
Scattered Clouds
Actual:
77 | 49 0.00
Average:
67 | 51 0.01
Scattered Clouds
Actual:
78 | 50 0.00
Average:
67 | 51 0.02
Scattered Clouds
Actual:
67 | 48 0.00
Average:
67 | 51 0.02
Partly Cloudy
Actual:
66 | 50 0.00
Average:
67 | 51 0.01
Partly Cloudy
Actual:
66 | 53 0.00
Average:
67 | 52 0.02
Partly Cloudy
Actual:
61 | 51 0.00
Average:
68 | 52 0.01
Fog
Actual:
59 | 50 0.00
Average:
68 | 52 0.02
Partly Cloudy
Actual:
61 | 50 0.00
Average:
68 | 52 0.01
Scattered Clouds
Actual:
67 | 48 0.00
Average:
68 | 52 0.02
Scattered Clouds
Actual:
68 | 49 0.00
Average:
68 | 52 0.01
Fog
Actual:
72 | 52 0.00
Average:
68 | 52 0.01
Mostly Cloudy
Actual:
65 | 52 0.00
Average:
68 | 52 0.01
Fog
Actual:
64 | 52 0.00
Average:
68 | 52 0.02
Scattered Clouds
Actual:
64 | 52 0.00
Average:
68 | 52 0.01
Scattered Clouds
Actual:
63 | 50 0.00
Average:
68 | 52 0.01
Partly Cloudy
Actual:
62 | 50 0.00
Average:
68 | 52 0.01
Mostly Cloudy
Actual:
60 | 49 0.00
Average:
69 | 52 0.01
Partly Cloudy
Actual:
61 | 52 0.00
Average:
69 | 53 0.01
Partly Cloudy
Actual:
63 | 51 0.00
Average:
69 | 53 0.01
Partly Cloudy
Actual:
65 | 52 0.00
Average:
69 | 53 0.01
Scattered Clouds
Actual:
67 | 50 0.00
Average:
69 | 53 0.01
Scattered Clouds
Actual:
78 | 51 0.00
Average:
69 | 53 0.01
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 59 54 49 46 43 40 86 71 55 29.97 29.95 29.92 10 10 10 33 20 40 0.00  
2 58 53 48 42 41 39 77 66 55 30.01 29.98 29.92 10 10 10 28 15 37 0.00  
3 63 57 51 52 48 43 83 74 64 30.11 30.05 29.98 10 10 10 20 9 25 T  
4 61 56 50 52 44 40 89 68 47 30.22 30.17 30.11 10 10 10 33 19 39 0.00  
5 69 58 47 45 42 37 80 57 34 30.22 30.16 30.07 10 10 9 28 12 32 0.00  
6 78 64 49 45 42 37 77 50 23 30.07 30.04 30.01 10 10 9 22 10 25 0.00  
7 83 67 51 54 46 40 77 50 23 30.03 30.00 29.95 10 10 9 25 10 29 0.00  
8 76 63 50 53 47 43 83 57 31 29.98 29.95 29.91 10 10 9 28 12 32 0.00  
9 64 58 51 48 45 43 83 68 53 29.97 29.95 29.92 10 9 7 25 15 31 0.00  
10 77 63 49 48 43 34 80 53 25 29.94 29.90 29.86 10 9 8 25 10 30 0.00  
11 78 64 50 56 47 42 83 58 33 29.99 29.93 29.88 10 10 9 22 9 24 0.00  
12 67 58 48 51 47 45 89 73 56 30.06 30.03 29.99 10 10 9 25 12 31 0.00  
13 66 58 50 50 46 45 83 68 52 30.09 30.07 30.04 10 10 10 21 8 25 0.00  
14 66 60 53 49 47 44 77 63 48 30.10 30.08 30.05 10 10 10 21 10 24 0.00  
15 61 56 51 48 47 46 83 73 62 30.08 30.05 30.02 10 10 10 28 15 32 0.00  
16 59 55 50 49 48 47 89 78 67 30.05 30.02 29.96 10 9 8 25 13 31 0.00 Fog
17 61 56 50 47 45 43 83 69 55 29.97 29.93 29.87 10 9 7 44 20 52 0.00  
18 67 58 48 45 43 41 80 62 44 29.99 29.96 29.93 10 10 9 28 14 33 0.00  
19 68 59 49 48 43 39 74 58 42 30.00 29.98 29.96 10 10 9 24 12 28 0.00  
20 72 62 52 49 46 40 83 62 41 30.04 29.99 29.96 10 10 10 31 16 39 0.00 Fog
21 65 59 52 54 50 48 89 77 65 30.12 30.09 30.03 10 10 5 30 14 33 0.00  
22 64 58 52 54 48 44 93 73 52 30.15 30.11 30.06 10 10 6 43 23 48 0.00 Fog
23 64 58 52 49 45 42 89 69 48 30.06 30.01 29.95 10 10 10 45 24 52 0.00  
24 63 57 50 47 44 42 80 66 51 29.94 29.85 29.77 10 10 9 45 25 58 0.00  
25 62 56 50 45 44 41 77 63 48 29.86 29.80 29.76 10 10 7 33 19 44 0.00  
26 60 55 49 46 45 45 83 70 57 30.12 29.97 29.86 10 9 7 26 15 33 0.00  
27 61 57 52 49 45 44 83 70 57 30.18 30.13 30.10 10 10 9 24 14 29 0.00  
28 63 57 51 49 46 42 89 72 55 30.11 30.08 30.05 10 10 8 24 14 30 0.00  
29 65 59 52 47 46 44 77 65 52 30.09 30.07 30.05 10 10 9 25 13 31 0.00  
30 67 59 50 49 47 46 83 68 52 30.12 30.08 30.04 10 10 10 27 13 35 0.00  
31 78 65 51 51 48 45 80 58 36 30.06 29.96 29.87 10 10 10 28 12 32 0.00