Weather History for San Francisco, CA

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Month of May, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 89 °F 68 °F 60 °F
Mean Temperature 73 °F 61 °F 55 °F
Min Temperature 59 °F 52 °F 48 °F
Degree Days  
Heating Degree Days (base 65) 10 5 0 160
Cooling Degree Days (base 65) 8 1 0 23
Growing Degree Days (base 50) 22 10 5 322
Dew Point  
Dew Point 56 °F 46 °F 21 °F
Precipitation  
Precipitation 0.01 in 0.00 in 0.00 in 0.01 in
Snowdepth - - - -
Wind  
Wind 48 mph 15 mph 0 mph
Gust Wind 56 mph 28 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.21 in 30.02 in 29.58 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 31, 2013 Rise Set
Actual Time 5:49 AM PDT 8:24 PM PDT
Civil Twilight 5:19 AM PDT 8:55 PM PDT
Nautical Twilight 4:41 AM PDT 9:33 PM PDT
Astronomical Twilight 3:59 AM PDT 10:16 PM PDT
Moon 1:08 AM PDT (5/31) 1:04 PM PDT (5/31)
Length of Visible Light 15h 36m
Length of Day
14h 34m
Waning Gibbous, 50% of the Moon is Illuminated
May 31
Waning Gibbous
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Jun 23
Full

Weather History Calendar

Precipitation Actual month total 0.01 Normal Month Total: 0.47
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
78 | 55 0.00
Average:
66 | 50 0.03
Clear
Actual:
89 | 56 0.00
Average:
66 | 50 0.02
Clear
Actual:
85 | 56 0.00
Average:
67 | 51 0.02
Scattered Clouds
Actual:
84 | 54 0.00
Average:
67 | 51 0.03
Rain
Actual:
70 | 56 T
Average:
67 | 51 0.02
Rain
Actual:
70 | 59 T
Average:
67 | 51 0.02
Partly Cloudy
Actual:
71 | 53 0.00
Average:
67 | 51 0.01
Overcast
Actual:
61 | 53 0.00
Average:
67 | 51 0.02
Mostly Cloudy
Actual:
62 | 52 0.00
Average:
67 | 51 0.02
Partly Cloudy
Actual:
60 | 51 0.00
Average:
67 | 51 0.01
Partly Cloudy
Actual:
69 | 51 0.00
Average:
67 | 51 0.02
Partly Cloudy
Actual:
69 | 53 0.00
Average:
67 | 51 0.02
Scattered Clouds
Actual:
65 | 51 0.00
Average:
67 | 51 0.01
Scattered Clouds
Actual:
65 | 53 0.00
Average:
67 | 52 0.02
Partly Cloudy
Actual:
62 | 52 0.00
Average:
68 | 52 0.01
Mostly Cloudy
Actual:
64 | 54 0.00
Average:
68 | 52 0.02
Partly Cloudy
Actual:
64 | 53 0.00
Average:
68 | 52 0.01
Partly Cloudy
Actual:
67 | 52 0.00
Average:
68 | 52 0.02
Clear
Actual:
75 | 51 0.00
Average:
68 | 52 0.01
Scattered Clouds
Actual:
83 | 53 0.00
Average:
68 | 52 0.01
Scattered Clouds
Actual:
63 | 49 0.00
Average:
68 | 52 0.01
Scattered Clouds
Actual:
62 | 48 0.00
Average:
68 | 52 0.02
Scattered Clouds
Actual:
62 | 48 0.00
Average:
68 | 52 0.01
Scattered Clouds
Actual:
62 | 49 0.00
Average:
68 | 52 0.01
Partly Cloudy
Actual:
60 | 50 0.00
Average:
68 | 52 0.01
Partly Cloudy
Actual:
66 | 53 0.00
Average:
69 | 52 0.01
Rain
Actual:
62 | 54 0.01
Average:
69 | 53 0.01
Partly Cloudy
Actual:
65 | 55 0.00
Average:
69 | 53 0.01
Partly Cloudy
Actual:
65 | 52 0.00
Average:
69 | 53 0.01
Scattered Clouds
Actual:
65 | 51 0.00
Average:
69 | 53 0.01
Clear
Actual:
74 | 50 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

2013 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 78 67 55 46 37 25 67 41 15 30.10 29.99 29.87 10 10 10 24 8 28 0.00  
2 89 73 56 51 35 21 67 40 12 30.16 30.12 30.09 10 10 9 17 5 21 0.00  
3 85 71 56 56 40 23 72 41 10 30.09 29.94 29.81 10 10 10 22 9 26 0.00  
4 84 69 54 56 47 42 77 51 24 29.80 29.67 29.58 10 10 9 28 10 36 0.00  
5 70 63 56 48 46 44 67 56 44 29.82 29.70 29.62 10 10 10 28 12 33 T Rain
6 70 65 59 51 48 46 72 59 45 29.98 29.88 29.82 10 10 10 18 8 24 T Rain
7 71 62 53 52 49 47 89 67 44 30.07 30.02 29.97 10 10 10 17 9 25 0.00  
8 61 57 53 50 48 46 89 76 62 30.17 30.12 30.06 10 10 10 23 13 28 0.00  
9 62 57 52 47 46 45 77 69 60 30.21 30.17 30.13 10 10 10 28 16 32 0.00  
10 60 56 51 49 48 46 89 77 64 30.21 30.18 30.15 10 10 5 26 14 31 0.00  
11 69 60 51 53 49 48 89 71 52 30.18 30.11 30.07 10 10 8 26 11 30 0.00  
12 69 61 53 53 50 48 89 69 49 30.17 30.11 30.05 10 10 10 28 14 32 0.00  
13 65 58 51 52 49 46 89 73 56 30.12 30.05 29.98 10 10 10 29 16 36 0.00  
14 65 59 53 48 46 43 77 63 48 30.04 29.99 29.96 10 10 10 28 15 32 0.00  
15 62 57 52 50 46 42 89 69 48 30.09 30.05 30.02 10 10 10 39 22 48 0.00  
16 64 59 54 54 50 47 89 75 60 30.06 30.03 30.00 10 10 10 30 18 35 0.00  
17 64 59 53 48 46 44 77 65 52 30.10 30.05 30.00 10 10 10 26 16 32 0.00  
18 67 60 52 49 47 45 83 66 48 30.16 30.12 30.09 10 10 10 39 19 46 0.00  
19 75 63 51 50 46 43 83 58 33 30.14 30.08 30.00 10 10 10 30 12 35 0.00  
20 83 68 53 53 46 41 77 51 25 30.01 29.99 29.95 10 10 10 25 11 33 0.00  
21 63 56 49 47 44 40 77 63 48 30.02 29.98 29.94 10 10 10 48 28 56 0.00  
22 62 55 48 42 37 31 74 55 36 30.04 30.00 29.94 10 10 10 36 18 41 0.00  
23 62 55 48 43 41 40 80 63 46 30.03 30.00 29.94 10 10 10 31 20 39 0.00  
24 62 56 49 43 42 40 80 63 46 30.03 30.01 29.98 10 10 10 33 18 44 0.00  
25 60 55 50 48 44 43 83 67 51 30.07 30.03 29.99 10 10 10 35 20 45 0.00  
26 66 60 53 51 49 48 93 75 56 30.16 30.12 30.08 10 9 4 30 18 33 0.00  
27 62 58 54 54 51 48 89 79 69 30.15 30.11 30.01 10 10 7 20 10 23 0.01 Rain
28 65 60 55 54 51 49 86 73 60 30.02 29.99 29.96 10 10 10 25 12 31 0.00  
29 65 59 52 52 48 45 80 68 56 30.00 29.97 29.93 10 10 10 31 16 37 0.00  
30 65 58 51 46 45 43 83 66 48 30.02 29.99 29.96 10 10 10 33 20 40 0.00  
31 74 62 50 49 45 43 80 57 33 30.03 29.99 29.94 10 10 9 30 14 35 0.00