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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 53 °F 44 °F 37 °F
Mean Temperature 50 °F 41 °F 35 °F
Min Temperature 46 °F 38 °F 32 °F
Degree Days  
Heating Degree Days (base 65) 30 24 16 734
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 49 °F 37 °F 28 °F
Precipitation  
Precipitation 0.92 in 0.20 in 0.00 in 6.24 in
Snowdepth - - - -
Wind  
Wind 30 mph 7 mph 0 mph
Gust Wind 46 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.46 in 29.90 in 28.93 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 20, 2012 Rise Set
Actual Time 7:54 AM PST 4:22 PM PST
Civil Twilight 7:18 AM PST 4:58 PM PST
Nautical Twilight 6:39 AM PST 5:37 PM PST
Astronomical Twilight 6:01 AM PST 6:14 PM PST
Moon 12:02 PM PST (12/20) 12:25 AM PST (12/20)
Length of Visible Light 9h 39m
Length of Day
8h 28m
First Quarter, 56% of the Moon is Illuminated
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Daily Weather History & 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 53 50 46 46 42 38 93 75 59 29.63 29.50 29.27 10 10 6 30 12 41 0.28 Rain
2 48 46 45 43 42 39 89 83 74 29.81 29.52 29.20 10 10 7 21 12 33 0.31 Rain
3 51 48 44 46 43 40 93 86 66 30.00 29.89 29.65 10 9 3 18 11 25 0.59 Rain
4 52 48 44 49 44 40 94 86 77 29.87 29.70 29.53 10 8 2 21 9 28 0.67 Rain
5 46 44 41 38 37 36 82 78 68 30.22 30.15 29.90 10 10 7 13 10 22 0.02 Rain
6 44 43 42 41 39 37 93 84 79 30.19 30.11 30.06 10 9 4 18 10 23 0.22 Rain
7 46 42 39 41 38 32 89 80 63 30.16 30.05 29.98 10 10 6 18 12 29 0.19 Rain
8 43 41 39 37 34 32 87 77 67 30.35 30.25 30.16 10 10 10 9 4 - 0.00  
9 44 42 39 43 39 35 100 90 83 30.38 30.33 30.27 10 5 1 8 4 - 0.14 Rain
10 44 43 42 43 41 39 100 92 87 30.43 30.33 30.12 10 5 1 10 2 - 0.05  
11 46 44 42 40 39 37 89 84 76 30.11 29.76 29.55 10 10 6 21 11 26 0.12 Rain
12 44 40 37 39 37 36 93 84 76 30.03 29.84 29.62 10 10 8 9 5 - 0.01 Rain
13 43 40 37 39 37 34 93 86 74 30.05 29.96 29.82 10 8 0 8 2 - 0.14 Fog , Rain
14 43 39 35 38 36 32 93 88 73 29.96 29.87 29.78 10 9 4 8 5 - 0.23 Rain
15 41 36 32 36 33 30 92 83 73 29.91 29.69 29.55 10 9 2 21 7 30 0.14 Rain
16 46 42 37 43 36 34 93 87 81 29.76 29.49 28.96 10 9 4 20 12 30 0.92 Rain
17 46 40 35 43 36 30 93 80 65 29.90 29.43 28.93 10 9 3 29 18 46 0.12 Rain
18 37 35 33 34 32 30 93 85 76 30.00 29.94 29.88 10 9 2 16 12 25 0.01 Rain , Snow
19 46 40 35 39 34 29 93 80 63 29.95 29.73 29.55 10 10 3 23 9 32 0.56 Rain , Snow
20 46 41 33 40 36 30 93 82 71 29.83 29.66 29.51 10 10 7 24 10 32 0.44 Rain
21 46 40 35 38 35 31 96 86 71 29.82 29.75 29.66 10 8 0 5 2 - 0.02 Fog , Rain
22 46 42 39 39 37 35 93 81 63 29.75 29.59 29.49 10 9 4 25 6 34 0.09 Rain
23 43 41 39 39 36 34 93 84 71 29.83 29.72 29.63 10 10 5 12 5 16 0.28 Rain
24 42 40 37 39 37 32 93 87 70 30.17 30.04 29.82 10 10 6 12 6 - 0.02 Rain
25 41 37 33 38 35 32 93 88 79 30.02 29.75 29.67 10 8 2 8 2 - 0.42 Rain , Snow
26 44 42 39 40 38 35 93 87 81 29.92 29.79 29.69 10 9 2 18 5 25 0.18 Rain
27 46 44 39 39 38 33 89 83 71 30.17 30.07 29.94 10 10 10 14 9 - 0.01 Rain
28 45 41 37 39 35 32 93 78 70 30.16 30.14 30.11 10 10 4 4 1 - 0.00  
29 41 40 39 39 37 33 93 90 73 30.24 30.18 30.15 10 8 2 6 1 - 0.05 Rain
30 39 36 32 37 35 28 100 91 81 30.32 30.27 30.22 10 5 0 5 0 - 0.01 Fog
31 37 35 33 34 32 30 93 86 75 30.46 30.34 30.24 10 9 2 8 1 - 0.00