History for San Francisco, CA

Month of December, 2012 — View Current Conditions
Month of December, 2012
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Daily Weekly Monthly Custom
  Max Avg Min Sum
Temperature
Max Temperature 66 °F 57 °F 49 °F
Mean Temperature 61 °F 52 °F 44 °F
Min Temperature 58 °F 46 °F 36 °F
Degree Days
Heating Degree Days (base 65) 21 13 4 400
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 3 0 87
Dew Point
Dew Point 59 °F 43 °F 18 °F
Precipitation
Precipitation 1.35 in 0.23 in 0.00 in 6.24 in
Snowdepth - - - -
Wind
Wind 44 mph 8 mph 0 mph
Gust Wind 53 mph 28 mph 16 mph
Sea Level Pressure
Sea Level Pressure 30.32 in 30.06 in 29.76 in
Monthly Graph
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Date:
Astronomy
May. 19, 2013 Rise Set
Actual Time 7:21 AM PST 4:55 PM PST
Civil Twilight 6:52 AM PST 5:24 PM PST
Nautical Twilight 6:19 AM PST 5:57 PM PST
Astronomical Twilight 5:47 AM PST 6:29 PM PST
Moon 1:12 PM PST (12/22) 2:15 AM PST (12/22)
Length Of Visible Light 10h 32m
Length of Day
9h 33m
Waxing Gibbous, 74% of the Moon is Illuminated
Dec 22
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
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Monthly Calendar Overview
Print This Calendar Precipitation: Actual month total 6.24 Normal month total 4.03
« Previous Month « 2011 December 2012 2013 » Next Month »
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
1 Rain
Actual: 64 | 58
Precip: 0.82
Average: 59 | 46
Precip: 0.11
2 Rain
Actual: 64 | 51
Precip: 0.92
Average: 59 | 46
Precip: 0.10
3 Partly Cloudy
Actual: 59 | 46
Precip: 0.00
Average: 58 | 46
Precip: 0.11
4 Rain
Actual: 62 | 52
Precip: T
Average: 58 | 46
Precip: 0.11
5 Rain
Actual: 62 | 58
Precip: 0.50
Average: 58 | 46
Precip: 0.11
6 Partly Cloudy
Actual: 60 | 51
Precip: 0.00
Average: 58 | 46
Precip: 0.11
7 Scattered Clouds
Actual: 60 | 46
Precip: 0.00
Average: 58 | 45
Precip: 0.13
8 Partly Cloudy
Actual: 59 | 46
Precip: 0.00
Average: 57 | 45
Precip: 0.12
9 Scattered Clouds
Actual: 65 | 46
Precip: 0.00
Average: 57 | 45
Precip: 0.12
10 Clear
Actual: 66 | 52
Precip: 0.00
Average: 57 | 45
Precip: 0.11
11 Rain
Actual: 58 | 46
Precip: T
Average: 57 | 45
Precip: 0.12
12 Rain
Actual: 55 | 46
Precip: 0.10
Average: 57 | 45
Precip: 0.12
13 Scattered Clouds
Actual: 54 | 42
Precip: 0.00
Average: 57 | 45
Precip: 0.12
14 Partly Cloudy
Actual: 53 | 42
Precip: T
Average: 57 | 45
Precip: 0.13
15 Rain
Actual: 49 | 40
Precip: 0.12
Average: 56 | 45
Precip: 0.13
16 Rain
Actual: 57 | 47
Precip: 0.01
Average: 56 | 44
Precip: 0.13
17 Rain
Actual: 59 | 50
Precip: 0.15
Average: 56 | 44
Precip: 0.13
18 Scattered Clouds
Actual: 53 | 44
Precip: 0.00
Average: 56 | 44
Precip: 0.14
19 Scattered Clouds
Actual: 51 | 36
Precip: 0.00
Average: 56 | 44
Precip: 0.14
20 Partly Cloudy
Actual: 60 | 37
Precip: 0.00
Average: 56 | 44
Precip: 0.15
21 Rain
Actual: 58 | 52
Precip: 0.32
Average: 56 | 44
Precip: 0.15
22 Rain
Actual: 59 | 50
Precip: 0.57
Average: 56 | 44
Precip: 0.15
23 Rain
Actual: 61 | 51
Precip: 1.35
Average: 56 | 44
Precip: 0.15
24 Partly Cloudy
Actual: 56 | 46
Precip: T
Average: 56 | 44
Precip: 0.15
25 Rain
Actual: 54 | 44
Precip: 0.90
Average: 56 | 44
Precip: 0.15
26 Rain
Actual: 55 | 48
Precip: 0.20
Average: 56 | 44
Precip: 0.14
27 Partly Cloudy
Actual: 54 | 46
Precip: 0.00
Average: 56 | 44
Precip: 0.14
28 Rain
Actual: 50 | 41
Precip: 0.17
Average: 56 | 44
Precip: 0.14
29 Rain
Actual: 54 | 44
Precip: 0.11
Average: 56 | 44
Precip: 0.14
30 Scattered Clouds
Actual: 55 | 40
Precip: 0.00
Average: 56 | 44
Precip: 0.14
31 Partly Cloudy
Actual: 53 | 37
Precip: 0.00
Average: 56 | 44
Precip: 0.14
 
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 Observations
2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 64 61 58 58 55 52 93 83 72 30.04 29.97 29.89 10 6 2 25 13 33 0.82 Rain
2 64 58 51 59 53 44 93 77 60 30.11 29.90 29.76 10 8 2 44 17 53 0.92 Rain
3 59 53 46 48 46 42 93 75 57 30.21 30.17 30.12 10 10 10 7 2 7 0.00  
4 62 57 52 56 50 42 83 66 48 30.23 30.19 30.14 10 10 9 18 6 24 T Rain
5 62 60 58 58 57 55 90 87 84 30.17 30.13 30.09 10 8 2 18 7 22 0.50 Rain
6 60 56 51 55 48 45 93 78 62 30.14 30.12 30.08 10 10 6 21 9 24 0.00  
7 60 53 46 50 46 42 86 75 64 30.16 30.11 30.08 10 10 10 15 5 16 0.00  
8 59 53 46 48 45 38 89 67 44 30.12 30.07 30.05 10 10 9 12 4 15 0.00  
9 65 56 46 47 42 38 86 63 40 30.19 30.14 30.10 10 10 10 9 2 10 0.00  
10 66 59 52 49 45 42 77 61 45 30.23 30.17 30.11 10 10 10 17 6 21 0.00  
11 58 52 46 50 46 41 89 80 71 30.10 29.98 29.88 10 8 0 22 7 26 T Fog , Rain
12 55 51 46 49 42 37 89 72 54 29.91 29.88 29.85 10 10 5 18 8 24 0.10 Rain
13 54 48 42 40 38 36 82 64 46 29.94 29.90 29.87 10 10 10 13 5 16 0.00  
14 53 48 42 43 40 37 83 71 59 30.03 29.92 29.83 10 10 10 12 4 13 T  
15 49 45 40 44 40 37 86 79 71 30.09 30.04 30.00 10 10 6 20 6 25 0.12 Rain
16 57 52 47 51 45 41 86 79 71 30.11 30.06 30.03 10 10 3 16 6 23 0.01 Rain
17 59 55 50 54 48 39 93 78 63 30.08 30.02 29.99 10 8 1 21 12 26 0.15 Rain
18 53 49 44 38 31 28 66 54 41 30.21 30.08 30.01 10 10 10 28 13 33 0.00  
19 51 44 36 34 29 18 82 55 27 30.32 30.26 30.21 10 10 10 9 3 10 0.00  
20 60 49 37 41 36 30 79 62 44 30.22 30.10 30.00 10 10 10 30 13 39 0.00  
21 58 55 52 52 47 40 93 74 55 29.99 29.91 29.86 10 8 2 35 17 43 0.32 Rain
22 59 55 50 52 47 44 96 79 62 30.08 29.95 29.84 10 8 4 32 15 52 0.57 Rain
23 61 56 51 57 51 45 93 83 72 30.07 29.95 29.86 10 7 2 38 16 47 1.35 Rain
24 56 51 46 45 42 37 93 74 54 30.22 30.16 30.05 10 10 10 13 5 15 T  
25 54 49 44 48 42 38 86 79 71 30.15 29.96 29.79 10 10 5 26 7 36 0.90 Rain
26 55 52 48 49 43 40 80 73 66 30.12 30.00 29.89 10 9 3 26 14 33 0.20 Rain
27 54 50 46 44 40 36 82 68 54 30.18 30.14 30.10 10 10 10 15 6 20 0.00  
28 50 46 41 41 39 37 89 75 61 30.19 30.12 30.04 10 10 6 13 5 14 0.17 Rain
29 54 49 44 43 40 37 82 71 59 30.09 30.05 30.01 10 9 5 20 8 22 0.11 Rain
30 55 48 40 42 38 32 89 70 50 30.18 30.10 30.06 10 10 10 15 4 17 0.00  
31 53 45 37 39 33 25 76 56 35 30.30 30.26 30.20 10 10 10 9 3 21 0.00  
Comma Delimited File