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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 63 °F 50 °F 37 °F
Mean Temperature 55 °F 44 °F 30 °F
Min Temperature 49 °F 37 °F 23 °F
Degree Days  
Heating Degree Days (base 65) 35 20 0 612
Cooling Degree Days (base 65) 934 45 0 1384
Growing Degree Days (base 50) 4 1 0 16
Dew Point  
Dew Point 54 °F 27 °F -8 °F
Precipitation  
Precipitation 0.43 in 0.04 in 0.00 in 0.99 in
Snowdepth - - - -
Wind  
Wind 47 mph 13 mph 0 mph
Gust Wind 54 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.29 in 30.03 in 29.69 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 30, 2012 Rise Set
Actual Time 7:01 AM PST 4:53 PM PST
Civil Twilight 6:33 AM PST 5:21 PM PST
Nautical Twilight 6:02 AM PST 5:53 PM PST
Astronomical Twilight 5:31 AM PST 6:23 PM PST
Moon 7:23 PM PST (12/30) 8:19 AM PST (12/30)
Length of Visible Light 10h 47m
Length of Day
9h 51m
Waning Gibbous, 95% of the Moon is Illuminated
Dec 30
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

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 50 48 46 50 47 45 100 97 93 30.21 30.14 30.06 2 0 0 17 9 23 0.10 Fog , Rain
2 54 50 46 52 47 45 100 92 83 30.14 30.06 29.98 10 4 0 25 14 35 0.04 Fog , Rain
3 55 51 47 49 40 5 100 57 13 30.22 30.16 30.06 10 6 0 21 10 26 0.04 Fog , Rain
4 58 53 47 39 25 5 63 38 12 30.26 30.20 30.16 10 10 10 15 8 20 0.00  
5 61 55 49 41 28 5 61 37 12 30.17 30.09 30.02 10 10 10 24 16 30 0.00  
6 52 48 43 45 43 35 100 81 61 30.10 30.04 29.95 10 4 0 35 15 40 T Fog , Rain
7 61 51 41 43 34 13 96 63 29 30.07 30.02 29.97 10 8 0 29 11 36 0.00 Fog
8 61 52 43 25 8 -8 45 26 6 29.98 29.95 29.90 10 10 10 32 15 37 0.00  
9 60 53 46 20 17 13 34 26 18 30.17 30.06 29.95 10 10 10 20 10 24 0.00  
10 57 51 45 20 19 18 34 29 23 30.19 30.14 30.07 10 10 10 22 10 26 0.00  
11 60 52 44 33 24 18 60 42 23 30.06 29.98 29.87 10 10 10 24 11 32 0.00  
12 44 41 37 54 38 32 100 79 57 29.92 29.85 29.78 10 3 0 29 17 38 0.43 Fog , Rain , Snow
13 41 36 30 34 30 28 100 85 70 29.80 29.74 29.69 10 6 0 21 10 28 0.02 Fog , Rain , Snow
14 37 33 28 30 28 25 100 88 75 29.94 29.82 29.70 10 5 0 22 12 28 T Fog , Snow
15 37 32 27 29 27 21 92 77 61 30.05 29.96 29.90 10 6 0 26 10 31 0.00 Fog
16 40 36 31 39 33 26 100 86 72 30.12 30.07 30.01 10 3 0 21 11 26 T Fog , Rain
17 44 42 39 43 40 37 100 96 92 30.13 30.07 29.93 1 0 0 18 11 25 0.01 Fog , Rain
18 41 34 28 41 32 24 100 89 78 29.92 29.86 29.82 10 4 0 30 18 41 0.03 Fog , Rain , Snow
19 37 30 23 18 5 0 74 49 23 30.29 30.24 30.18 10 10 10 47 18 54 0.00  
20 38 33 28 9 3 -1 36 30 24 30.27 30.22 30.16 10 10 10 29 22 36 0.00  
21 51 40 29 16 9 4 77 46 15 30.14 30.08 30.03 10 10 10 18 9 23 0.00  
22 48 43 37 39 23 -6 100 58 15 30.11 30.06 30.00 10 6 0 22 12 26 0.01 Fog
23 42 38 33 39 36 32 100 76 52 30.18 30.11 30.02 10 4 0 28 13 35 T Fog , Rain
24 56 46 35 41 34 14 100 62 24 30.09 30.05 29.98 10 4 0 32 16 39 0.05 Fog , Rain
25 63 51 38 24 17 9 49 32 14 30.09 29.99 29.85 10 10 10 24 13 31 0.00  
26 57 49 41 35 31 28 62 50 38 29.97 29.91 29.77 10 7 0 29 14 35 0.02 Rain
27 50 42 34 30 29 23 82 61 39 30.06 29.98 29.88 10 3 0 29 14 37 0.05 Rain , Snow
28 55 44 32 22 19 16 96 61 26 30.10 30.05 30.00 10 10 10 17 9 22 0.00  
29 52 41 30 29 25 19 78 53 28 30.00 29.95 29.88 10 5 0 16 9 22 0.19 Rain , Snow
30 46 39 32 29 28 26 96 75 53 30.05 29.94 29.86 10 2 0 25 14 31 T Snow
31 47 38 28 27 25 10 85 59 32 30.19 30.12 30.01 10 5 0 24 9 28 0.00