Weather History for San Nicolas Island, CA

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Month of December, 2010

  Max Avg Min Sum
Temperature  
Max Temperature 78 °F 59 °F 52 °F
Mean Temperature 69 °F 55 °F 48 °F
Min Temperature 60 °F 50 °F 43 °F
Degree Days  
Heating Degree Days (base 65) 16 11 0 335
Cooling Degree Days (base 65) 4 0 0 4
Growing Degree Days (base 50) 19 5 0 143
Dew Point  
Dew Point 58 °F 48 °F 25 °F
Precipitation  
Precipitation 1.09 in 0.12 in 0.00 in 3.81 in
Snowdepth - - - -
Wind  
Wind 43 mph 13 mph 0 mph
Gust Wind 56 mph 28 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.25 in 30.01 in 29.71 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 20, 2010 Rise Set
Actual Time 6:56 AM PST 4:54 PM PST
Civil Twilight 6:29 AM PST 5:21 PM PST
Nautical Twilight 5:58 AM PST 5:52 PM PST
Astronomical Twilight 5:28 AM PST 6:22 PM PST
Moon 4:29 PM PST (12/20) 6:22 AM PST (12/20)
Length of Visible Light 10h 52m
Length of Day
9h 57m
Full, 100% of the Moon is Illuminated
Dec 20
Full
Dec 21
Full
Dec 27
Last Quarter
Jan 4
New
Jan 12
First Quarter

Weather History Calendar

Precipitation Actual month total 3.81 Average Month Total: 1.44
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
62 | 45 0.00
Average:
60 | 50 0.03
Scattered Clouds
Actual:
64 | 48 0.00
Average:
60 | 50 0.03
Fog
Actual:
57 | 46 0.00
Average:
59 | 50 0.03
Rain
Actual:
57 | 51 0.00
Average:
59 | 50 0.03
Rain
Actual:
55 | 51 0.04
Average:
59 | 50 0.03
Fog
Actual:
61 | 48 0.00
Average:
59 | 50 0.02
Clear
Actual:
64 | 48 0.00
Average:
59 | 50 0.02
Partly Cloudy
Actual:
61 | 50 0.00
Average:
59 | 50 0.02
Fog
Actual:
62 | 53 0.00
Average:
59 | 50 0.02
Fog
Actual:
62 | 55 0.00
Average:
59 | 50 0.02
Scattered Clouds
Actual:
69 | 57 0.00
Average:
59 | 50 0.02
Clear
Actual:
78 | 60 0.00
Average:
59 | 50 0.69
Fog
Actual:
71 | 46 0.00
Average:
59 | 50 0.02
Rain
Actual:
55 | 46 0.00
Average:
59 | 50 0.02
Rain
Actual:
61 | 51 0.00
Average:
59 | 50 0.02
Rain
Actual:
60 | 51 0.00
Average:
59 | 50 0.02
Rain
Actual:
55 | 53 0.16
Average:
59 | 49 0.02
Rain
Actual:
57 | 55 0.03
Average:
58 | 49 0.02
Rain
Actual:
57 | 55 0.61
Average:
58 | 49 0.02
Rain
Actual:
55 | 50 0.55
Average:
58 | 49 0.02
Rain
Actual:
55 | 51 0.37
Average:
58 | 49 0.02
Rain
Actual:
55 | 51 0.33
Average:
58 | 49 0.03
Partly Cloudy
Actual:
57 | 46 0.00
Average:
58 | 49 0.03
Partly Cloudy
Actual:
55 | 44 0.00
Average:
58 | 49 0.03
Partly Cloudy
Actual:
53 | 46 0.18
Average:
58 | 49 0.03
Partly Cloudy
Actual:
57 | 50 0.45
Average:
58 | 49 0.03
Scattered Clouds
Actual:
60 | 44 0.00
Average:
58 | 49 0.03
Scattered Clouds
Actual:
60 | 48 0.00
Average:
58 | 49 0.03
Rain
Actual:
55 | 48 1.09
Average:
58 | 49 0.03
Scattered Clouds
Actual:
52 | 46 0.00
Average:
58 | 49 0.03
Clear
Actual:
54 | 43 0.00
Average:
58 | 49 0.03
 

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

2010 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 62 54 45 48 39 28 86 63 28 30.20 30.09 30.01 10 9 7 17 12 - 0.00  
2 64 56 48 49 37 25 71 53 34 30.06 30.03 30.00 10 9 7 12 7 - 0.00  
3 57 52 46 52 49 37 94 87 61 30.02 29.98 29.94 10 3 0 13 5 - 0.00 Fog
4 57 54 51 54 52 49 100 92 81 30.09 30.04 29.98 10 4 0 13 7 - 0.00 Fog , Rain
5 55 53 51 54 52 50 100 94 93 30.16 30.08 30.00 10 3 0 18 7 22 0.04 Fog , Rain
6 61 54 48 54 49 43 100 86 62 30.25 30.20 30.16 10 6 0 21 7 - 0.00 Fog
7 64 56 48 52 47 43 92 79 52 30.20 30.16 30.14 10 9 7 17 12 - 0.00  
8 61 56 50 52 48 43 97 81 58 30.19 30.14 30.11 10 7 1 26 17 33 0.00  
9 62 58 53 57 53 51 96 89 75 30.16 30.11 30.08 10 5 0 33 23 40 0.00 Fog
10 62 58 55 55 53 51 94 83 72 30.17 30.11 30.08 10 7 0 36 29 44 0.00 Fog
11 69 63 57 53 50 47 87 67 49 30.12 30.07 30.04 10 9 7 30 22 41 0.00  
12 78 69 60 45 42 40 55 40 25 30.17 30.10 30.04 10 9 7 14 4 - 0.00  
13 71 60 46 49 45 40 93 68 34 30.04 29.99 29.94 10 6 0 20 11 - 0.00 Fog
14 55 50 46 54 50 44 100 93 86 30.00 29.96 29.92 10 2 0 25 13 31 0.00 Fog , Rain
15 61 56 51 54 50 44 100 87 60 29.97 29.94 29.91 10 7 0 20 15 23 0.00 Fog , Rain
16 60 56 51 50 46 35 89 77 39 29.97 29.94 29.91 10 9 7 12 9 - 0.00 Rain
17 55 54 53 56 54 50 100 96 88 29.96 29.92 29.89 10 1 0 17 11 21 0.16 Fog , Rain
18 57 56 55 57 56 54 100 99 94 30.03 29.97 29.91 0 0 0 20 11 28 0.03 Fog , Rain
19 57 56 55 58 56 54 100 98 94 29.91 29.84 29.81 5 1 0 23 14 30 0.61 Fog , Rain
20 55 52 50 55 52 48 100 97 92 29.87 29.80 29.71 10 4 0 18 7 - 0.55 Fog , Rain
21 55 53 51 55 52 48 100 98 88 29.92 29.87 29.77 10 3 0 14 9 - 0.37 Fog , Rain
22 55 53 51 56 53 48 100 96 88 30.04 29.81 29.72 10 5 0 24 12 34 0.33 Fog , Rain
23 57 52 46 49 47 43 94 86 74 30.19 30.14 30.04 10 9 5 13 8 - 0.00  
24 55 50 44 52 47 43 96 88 80 30.19 30.14 30.05 10 8 2 9 4 - 0.00  
25 53 50 46 52 47 44 100 89 77 30.05 30.00 29.94 10 7 0 23 10 28 0.18  
26 57 54 50 48 47 45 94 83 67 30.22 30.15 30.05 10 9 7 25 19 33 0.45  
27 60 52 44 46 42 36 89 68 41 30.16 30.12 30.07 10 9 7 22 15 - 0.00  
28 60 54 48 49 44 33 89 72 47 30.07 30.01 29.95 10 9 7 20 11 24 0.00  
29 55 52 48 54 48 36 100 87 63 29.96 29.81 29.73 10 5 0 43 18 56 1.09 Fog , Rain
30 52 49 46 39 33 26 71 55 37 29.94 29.86 29.77 10 9 7 40 32 50 0.00  
31 54 48 43 43 40 34 86 71 58 30.13 30.03 29.92 10 10 10 24 16 34 0.00