Weather History for San Carlos, CA

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 73 °F 57 °F 50 °F
Mean Temperature 60 °F 48 °F 42 °F
Min Temperature 53 °F 39 °F 32 °F
Degree Days  
Heating Degree Days (base 65) 23 17 4 519
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 1 0 28
Dew Point  
Dew Point 54 °F 36 °F 9 °F
Precipitation  
Precipitation 0.02 in 0.00 in 0.00 in 0.02 in
Snowdepth - - - -
Wind  
Wind 46 mph 2 mph 0 mph
Gust Wind 32 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.55 in 30.19 in 29.75 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 09, 2011 Rise Set
Actual Time 7:11 AM PST 4:50 PM PST
Civil Twilight 6:42 AM PST 5:19 PM PST
Nautical Twilight 6:10 AM PST 5:52 PM PST
Astronomical Twilight 5:38 AM PST 6:24 PM PST
Moon 4:18 PM PST (12/9) 6:24 AM PST (12/9)
Length of Visible Light 10h 37m
Length of Day
9h 38m
Waxing Gibbous, 99% of the Moon is Illuminated
Dec 9
Waxing Gibbous
Dec 10
Full
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter

Weather History Calendar

Precipitation Actual month total 0.02 Average Month Total: 3.98
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
66 | 53 0.00
Average:
61 | 40 0.10
Clear
Actual:
73 | 48 0.00
Average:
61 | 41 0.10
Clear
Actual:
60 | 46 0.00
Average:
61 | 41 0.10
Clear
Actual:
59 | 39 0.00
Average:
60 | 41 0.10
Scattered Clouds
Actual:
59 | 41 0.00
Average:
61 | 41 0.11
Scattered Clouds
Actual:
57 | 37 0.00
Average:
60 | 41 0.11
Clear
Actual:
57 | 37 0.00
Average:
61 | 40 0.11
Scattered Clouds
Actual:
57 | 37 0.00
Average:
60 | 40 0.12
Clear
Actual:
59 | 37 0.00
Average:
60 | 40 0.12
Scattered Clouds
Actual:
57 | 37 0.00
Average:
60 | 39 0.12
Rain
Actual:
51 | 41 0.00
Average:
58 | 39 0.12
Rain
Actual:
50 | 41 0.00
Average:
57 | 38 0.12
Clear
Actual:
55 | 37 0.00
Average:
58 | 38 0.12
Scattered Clouds
Actual:
53 | 37 0.00
Average:
58 | 39 0.12
Rain
Actual:
50 | 41 0.02
Average:
57 | 39 0.11
Clear
Actual:
59 | 37 0.00
Average:
59 | 38 0.13
Clear
Actual:
57 | 37 0.00
Average:
59 | 39 0.13
Partly Cloudy
Actual:
53 | 37 0.00
Average:
57 | 38 0.13
Partly Cloudy
Actual:
60 | 42 0.00
Average:
57 | 38 0.14
Scattered Clouds
Actual:
59 | 37 0.00
Average:
55 | 37 0.14
Clear
Actual:
60 | 37 0.00
Average:
55 | 38 0.14
Scattered Clouds
Actual:
57 | 37 0.00
Average:
55 | 37 0.13
Scattered Clouds
Actual:
57 | 33 0.00
Average:
56 | 36 0.13
Clear
Actual:
55 | 32 0.00
Average:
57 | 38 0.14
Scattered Clouds
Actual:
51 | 33 0.00
Average:
56 | 37 0.14
Partly Cloudy
Actual:
51 | 35 0.00
Average:
56 | 36 0.15
Partly Cloudy
Actual:
57 | 41 0.00
Average:
56 | 38 0.16
Scattered Clouds
Actual:
60 | 39 0.00
Average:
57 | 39 0.16
Fog
Actual:
59 | 44 0.00
Average:
57 | 38 0.16
Rain
Actual:
57 | 48 0.00
Average:
57 | 37 0.16
Scattered Clouds
Actual:
59 | 41 0.00
Average:
56 | 38 0.16
 

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

2011 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 66 60 53 34 27 21 44 31 19 30.23 30.16 30.04 10 10 10 24 15 32 0.00  
2 73 60 48 36 27 19 44 31 16 30.05 30.01 29.94 20 11 10 13 5 18 0.00  
3 60 53 46 32 25 18 44 32 23 30.26 30.13 30.03 10 10 10 22 11 25 0.00  
4 59 49 39 46 32 18 87 60 28 30.28 30.23 30.14 20 11 10 9 2 - 0.00  
5 59 50 41 37 32 19 87 60 22 30.31 30.22 30.16 20 12 10 9 2 - 0.00  
6 57 47 37 37 32 30 81 66 38 30.42 30.35 30.32 15 10 8 7 1 - 0.00  
7 57 47 37 37 34 30 87 72 36 30.35 30.26 30.16 10 10 6 8 1 - 0.00  
8 57 47 37 45 37 34 93 81 48 30.17 30.15 30.10 10 8 5 8 0 - 0.00  
9 59 48 37 39 35 32 93 74 38 30.23 30.17 30.14 10 7 6 5 0 - 0.00  
10 57 47 37 46 37 32 93 77 48 30.17 30.11 30.04 8 6 5 7 1 - 0.00  
11 51 46 41 45 41 39 93 84 67 30.05 29.95 29.84 10 8 5 9 1 - 0.00 Rain
12 50 46 41 45 43 37 93 88 71 29.89 29.80 29.75 10 8 4 5 0 - 0.00 Rain
13 55 46 37 45 39 36 100 88 58 30.14 30.01 29.89 10 6 3 9 1 - 0.00  
14 53 45 37 45 40 37 100 87 72 30.30 30.23 30.15 10 10 8 46 2 - 0.00  
15 50 46 41 45 42 39 100 86 71 30.30 30.23 30.19 10 9 2 14 4 - 0.02 Rain
16 59 48 37 39 36 32 100 75 36 30.37 30.21 30.13 10 10 10 7 2 - 0.00  
17 57 47 37 45 37 34 93 78 51 30.20 30.15 30.09 10 10 10 6 1 - 0.00  
18 53 45 37 46 38 32 93 82 72 30.22 30.15 30.12 10 10 7 9 2 - 0.00  
19 60 51 42 45 40 36 87 73 39 30.12 30.08 30.03 10 10 6 6 2 - 0.00  
20 59 48 37 37 33 27 87 65 29 30.11 30.07 30.04 15 11 10 8 2 - 0.00  
21 60 48 37 37 33 32 93 67 34 30.15 30.09 30.05 10 10 10 6 0 - 0.00  
22 57 48 37 32 21 9 70 43 18 30.48 30.31 30.17 20 10 10 10 2 - 0.00  
23 57 45 33 39 27 19 76 60 33 30.55 30.51 30.48 20 11 10 6 1 - 0.00  
24 55 44 32 32 29 25 87 67 37 30.50 30.45 30.37 10 10 7 5 0 - 0.00  
25 51 42 33 39 31 28 87 74 47 30.45 30.38 30.32 10 7 4 7 1 - 0.00  
26 51 43 35 45 38 32 87 83 75 30.38 30.32 30.29 10 7 2 12 1 - 0.00  
27 57 49 41 45 40 36 93 80 51 30.37 30.34 30.30 10 10 5 12 2 - 0.00  
28 60 50 39 50 41 36 94 80 52 30.37 30.34 30.29 10 10 8 8 3 - 0.00  
29 59 52 44 54 49 43 100 93 77 30.29 30.22 30.14 19 8 1 12 1 - 0.00 Fog
30 57 52 48 54 52 46 100 96 82 30.23 30.19 30.15 10 6 0 9 1 - 0.00 Fog , Rain
31 59 50 41 45 39 32 93 74 38 30.25 30.20 30.15 10 10 10 8 3 - 0.00