Weather History for San Francisco, CA

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Month of January, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 63 °F 56 °F 49 °F
Mean Temperature 57 °F 49 °F 43 °F
Min Temperature 51 °F 42 °F 34 °F
Degree Days  
Heating Degree Days (base 65) 22 16 8 500
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 7 1 0 18
Dew Point  
Dew Point 52 °F 39 °F 16 °F
Precipitation  
Precipitation 0.10 in 0.01 in 0.00 in 0.20 in
Snowdepth - - - -
Wind  
Wind 33 mph 6 mph 0 mph
Gust Wind 38 mph 25 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.49 in 30.20 in 29.97 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 21, 2013 Rise Set
Actual Time 7:20 AM PST 5:21 PM PST
Civil Twilight 6:52 AM PST 5:49 PM PST
Nautical Twilight 6:20 AM PST 6:21 PM PST
Astronomical Twilight 5:49 AM PST 6:52 PM PST
Moon 1:05 PM PST 2:53 AM PST
Length of Visible Light 10h 57m
Length of Day
10h 01m
Waxing Gibbous, 76% of the Moon is Illuminated
Jan 21
Waxing Gibbous
Jan 26
Full
Feb 3
Last Quarter
Feb 9
New
Feb 17
First Quarter

Weather History Calendar

Precipitation Actual month total 0.20 Normal Month Total: 4.19
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
53 | 42 T
Average:
56 | 44 0.14
Clear
Actual:
55 | 37 0.00
Average:
56 | 44 0.14
Scattered Clouds
Actual:
53 | 37 0.00
Average:
56 | 44 0.13
Scattered Clouds
Actual:
55 | 40 0.00
Average:
56 | 44 0.14
Rain
Actual:
53 | 41 0.06
Average:
56 | 44 0.14
Rain
Actual:
52 | 47 T
Average:
56 | 44 0.13
Partly Cloudy
Actual:
57 | 41 0.00
Average:
56 | 44 0.14
Scattered Clouds
Actual:
56 | 43 0.00
Average:
56 | 44 0.14
Rain
Actual:
55 | 43 0.04
Average:
56 | 44 0.14
Partly Cloudy
Actual:
51 | 44 0.00
Average:
56 | 44 0.15
Partly Cloudy
Actual:
52 | 44 0.00
Average:
56 | 44 0.15
Scattered Clouds
Actual:
49 | 38 0.00
Average:
56 | 44 0.14
Scattered Clouds
Actual:
50 | 36 0.00
Average:
56 | 44 0.14
Scattered Clouds
Actual:
52 | 36 0.00
Average:
56 | 44 0.15
Partly Cloudy
Actual:
54 | 34 0.00
Average:
56 | 44 0.14
Clear
Actual:
52 | 36 0.00
Average:
56 | 44 0.13
Clear
Actual:
59 | 38 0.00
Average:
56 | 44 0.14
Scattered Clouds
Actual:
62 | 39 0.00
Average:
56 | 44 0.13
Scattered Clouds
Actual:
60 | 39 0.00
Average:
56 | 44 0.12
Scattered Clouds
Actual:
62 | 39 0.00
Average:
57 | 44 0.12
Scattered Clouds
Actual:
56 | 38 0.00
Average:
57 | 44 0.13
Partly Cloudy
Actual:
57 | 41 0.00
Average:
57 | 45 0.12
Rain
Actual:
55 | 50 0.10
Average:
57 | 45 0.13
Overcast
Actual:
56 | 50 0.00
Average:
57 | 45 0.13
Partly Cloudy
Actual:
63 | 51 0.00
Average:
57 | 45 0.13
Fog
Actual:
56 | 49 0.00
Average:
57 | 45 0.13
Scattered Clouds
Actual:
54 | 44 T
Average:
57 | 45 0.13
Partly Cloudy
Actual:
56 | 45 0.00
Average:
57 | 45 0.13
Partly Cloudy
Actual:
56 | 45 0.00
Average:
58 | 45 0.13
Scattered Clouds
Actual:
61 | 43 0.00
Average:
58 | 45 0.14
Clear
Actual:
62 | 42 0.00
Average:
58 | 45 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 Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 53 48 42 40 37 34 83 69 54 30.29 30.25 30.22 10 10 9 20 8 22 T  
2 55 46 37 44 36 31 85 68 50 30.25 30.20 30.15 10 10 10 8 3 22 0.00  
3 53 45 37 42 37 33 85 73 61 30.27 30.22 30.18 10 10 9 8 1 9 0.00  
4 55 48 40 42 38 35 82 68 54 30.30 30.24 30.19 10 10 8 8 3 9 0.00  
5 53 47 41 48 44 36 93 85 76 30.27 30.16 30.07 10 8 3 22 3 24 0.06 Rain
6 52 50 47 46 42 41 86 77 68 30.20 30.14 30.05 10 10 4 24 8 26 T Rain
7 57 49 41 49 45 39 93 83 72 30.27 30.20 30.17 10 9 8 12 3 14 0.00  
8 56 50 43 47 44 40 92 79 66 30.25 30.18 30.14 10 9 4 7 2 9 0.00  
9 55 49 43 48 42 36 89 75 61 30.15 30.08 30.03 10 7 2 25 9 33 0.04 Rain
10 51 48 44 35 33 30 70 60 50 30.21 30.13 30.09 10 10 10 24 14 30 0.00  
11 52 48 44 40 35 29 76 63 49 30.27 30.20 30.14 10 10 10 24 11 29 0.00  
12 49 44 38 37 30 26 76 59 42 30.26 30.20 30.16 10 10 10 13 5 15 0.00  
13 50 43 36 34 26 16 65 47 28 30.28 30.22 30.19 10 10 10 20 8 24 0.00  
14 52 44 36 32 23 18 70 50 29 30.42 30.36 30.25 10 10 10 23 8 26 0.00  
15 54 44 34 37 32 26 85 60 35 30.49 30.44 30.42 10 10 10 13 3 17 0.00  
16 52 44 36 40 34 29 82 66 50 30.44 30.36 30.27 10 9 7 9 2 10 0.00  
17 59 49 38 42 36 31 85 64 43 30.27 30.21 30.16 10 10 9 9 3 12 0.00  
18 62 51 39 41 37 34 85 62 39 30.24 30.18 30.14 10 10 8 7 2 10 0.00  
19 60 50 39 43 37 33 86 62 37 30.26 30.20 30.16 10 10 9 7 1 9 0.00  
20 62 51 39 44 37 32 82 61 39 30.24 30.19 30.14 10 10 9 7 1 9 0.00  
21 56 47 38 45 41 36 89 68 47 30.19 30.14 30.09 10 10 10 8 2 10 0.00  
22 57 49 41 44 40 34 86 69 51 30.12 30.07 30.01 10 9 8 8 2 12 0.00  
23 55 53 50 48 46 43 89 80 71 30.09 30.04 29.97 10 7 3 14 4 20 0.10 Rain
24 56 53 50 50 48 46 93 85 77 30.19 30.14 30.08 10 6 3 8 3 9 0.00  
25 63 57 51 52 49 47 89 78 67 30.19 30.12 30.06 10 8 3 18 6 22 0.00  
26 56 53 49 50 44 39 96 76 55 30.10 30.05 30.02 10 10 2 33 19 38 0.00 Fog
27 54 49 44 40 37 35 71 61 50 30.19 30.14 30.09 10 10 10 23 13 28 T  
28 56 51 45 42 40 36 82 69 55 30.31 30.24 30.18 10 10 10 22 11 26 0.00  
29 56 51 45 44 41 38 82 71 59 30.37 30.32 30.29 10 10 10 21 8 24 0.00  
30 61 52 43 48 43 39 89 72 55 30.35 30.30 30.27 10 10 10 13 3 15 0.00  
31 62 52 42 46 43 38 89 75 61 30.30 30.24 30.19 10 10 9 9 2 10 0.00