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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 55 °F 36 °F 23 °F
Mean Temperature 45 °F 29 °F 16 °F
Min Temperature 39 °F 21 °F 9 °F
Degree Days  
Heating Degree Days (base 65) 49 36 20 1123
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 43 °F 23 °F 9 °F
Precipitation  
Precipitation 0.17 in 0.01 in 0.00 in 0.21 in
Snowdepth - - - -
Wind  
Wind 33 mph 5 mph 0 mph
Gust Wind 75 mph 34 mph 21 mph
Sea Level Pressure  
Sea Level Pressure 30.78 in 30.30 in 29.54 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 08, 2011 Rise Set
Actual Time 7:31 AM PST 4:07 PM PST
Civil Twilight 6:56 AM PST 4:43 PM PST
Nautical Twilight 6:17 AM PST 5:21 PM PST
Astronomical Twilight 5:40 AM PST 5:59 PM PST
Moon 2:51 PM PST (12/8) 5:47 AM PST (12/8)
Length of Visible Light 9h 46m
Length of Day
8h 35m
Waxing Gibbous, 97% of the Moon is Illuminated
Dec 8
Waxing Gibbous
Dec 10
Full
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter

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 40 30 19 19 15 10 68 49 29 30.78 30.58 30.21 10 10 10 15 4 20 0.00  
2 49 32 15 23 16 13 84 54 23 30.45 30.35 30.23 10 10 10 20 7 28 0.00  
3 39 30 21 22 19 14 74 63 52 30.42 30.38 30.34 10 10 10 10 4 12 0.00  
4 48 33 18 25 19 16 84 58 31 30.60 30.52 30.38 10 10 10 21 5 24 0.00  
5 37 27 16 25 19 12 88 76 64 30.56 30.51 30.45 10 10 10 9 4 10 0.00  
6 37 26 15 25 19 13 92 76 59 30.44 30.39 30.33 10 8 1 8 4 9 0.00  
7 41 29 16 25 21 15 92 72 51 30.45 30.41 30.36 10 10 5 10 3 13 0.00  
8 33 22 10 22 15 9 100 82 63 30.50 30.47 30.44 10 10 6 9 3 10 0.00  
9 27 19 11 23 16 9 96 89 81 30.57 30.48 30.33 9 5 1 12 5 13 0.00  
10 23 16 9 21 17 9 100 94 88 30.33 30.18 30.06 10 3 0 12 4 14 0.00 Fog
11 24 20 16 21 20 15 100 94 88 30.20 30.13 30.06 10 5 0 8 1 10 0.00 Fog
12 34 26 17 24 19 16 100 81 61 30.30 30.22 30.15 10 4 0 10 2 12 0.00 Fog
13 26 24 22 23 21 19 100 91 81 30.22 30.17 30.11 10 8 5 8 3 9 T  
14 29 26 22 25 22 19 92 84 75 30.30 30.22 30.13 10 8 2 12 3 13 T Snow
15 31 28 24 27 25 23 100 89 78 30.53 30.31 30.15 9 6 2 7 1 9 0.01 Snow
16 32 30 28 29 27 26 92 89 85 30.56 30.52 30.46 8 5 2 8 2 9 0.00  
17 32 30 28 30 29 28 100 93 85 30.49 30.32 30.11 9 4 1 7 1 8 0.00  
18 34 29 23 30 27 23 100 91 82 30.43 30.19 30.03 10 4 0 12 4 13 0.00 Fog
19 28 27 25 27 25 23 100 93 85 30.49 30.44 30.38 10 6 0 9 3 10 0.00 Fog
20 31 26 21 27 25 23 100 92 84 30.37 30.21 30.09 10 5 0 20 4 23 0.00 Fog
21 42 29 15 24 19 12 92 67 41 30.57 30.43 30.21 10 10 10 18 7 22 0.00  
22 34 23 12 23 16 10 100 82 64 30.63 30.58 30.53 10 10 10 12 6 14 0.00  
23 31 22 12 22 17 10 96 83 69 30.66 30.57 30.46 10 10 10 8 4 10 0.00  
24 33 28 22 26 23 21 96 83 69 30.61 30.57 30.45 10 10 9 32 7 75 0.00  
25 42 34 25 32 26 21 92 69 45 30.44 30.22 30.08 10 10 10 28 9 32 0.00  
26 38 33 27 32 27 22 100 81 61 30.35 30.26 30.18 10 8 2 15 5 16 0.01 Snow
27 38 32 26 35 30 26 100 93 85 30.20 30.09 29.79 10 4 0 10 4 12 T Fog , Rain
28 55 45 34 43 40 35 100 78 55 29.86 29.76 29.60 10 10 10 20 10 25 0.02 Rain
29 49 44 39 39 34 28 100 73 46 29.99 29.82 29.62 10 9 5 33 10 41 0.17 Rain
30 50 41 31 38 32 19 100 71 42 30.05 29.69 29.54 10 7 0 28 10 33 0.00 Fog
31 39 31 23 26 23 18 85 67 48 30.46 30.38 30.10 10 10 10 15 4 17 0.00