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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 55 °F 44 °F 34 °F
Mean Temperature 46 °F 30 °F 19 °F
Min Temperature 42 °F 15 °F 2 °F
Degree Days  
Heating Degree Days (base 65) 46 35 19 1097
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 43 °F 18 °F -3 °F
Precipitation  
Precipitation 0.27 in 0.02 in 0.00 in 0.44 in
Snowdepth - - - -
Wind  
Wind 40 mph 4 mph 0 mph
Gust Wind 55 mph 24 mph 18 mph
Sea Level Pressure  
Sea Level Pressure 30.76 in 30.31 in 29.81 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 15, 2011 Rise Set
Actual Time 7:28 AM PST 4:35 PM PST
Civil Twilight 6:56 AM PST 5:07 PM PST
Nautical Twilight 6:21 AM PST 5:42 PM PST
Astronomical Twilight 5:47 AM PST 6:16 PM PST
Moon 10:12 PM PST (12/15) 10:42 AM PST (12/15)
Length of Visible Light 10h 11m
Length of Day
9h 07m
Waning Gibbous, 73% of the Moon is Illuminated
Dec 15
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter
Jan 8
Full

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 47 36 24 22 17 12 75 51 25 30.61 30.52 30.40 10 10 10 22 9 28 0.00  
2 52 34 16 25 13 -3 84 52 11 30.38 30.28 30.15 10 10 10 28 7 32 0.00  
3 43 29 15 15 11 5 84 55 22 30.45 30.40 30.32 10 10 7 14 4 15 0.00  
4 45 28 11 21 16 9 88 63 37 30.46 30.41 30.33 10 10 7 18 6 24 0.00  
5 42 28 13 21 15 11 88 67 30 30.50 30.45 30.39 10 9 5 15 3 18 0.00  
6 46 30 13 20 14 10 88 68 31 30.53 30.46 30.36 10 9 7 8 1 8 0.00  
7 48 32 15 25 17 12 92 71 33 30.46 30.35 30.21 10 10 7 9 1 9 0.00  
8 47 31 15 27 20 13 100 78 42 30.40 30.34 30.26 10 10 10 13 3 14 0.00  
9 46 29 12 26 18 10 96 78 41 30.46 30.35 30.23 10 10 9 10 2 10 0.00  
10 45 26 7 23 14 6 92 79 33 30.32 30.19 30.03 10 8 0 5 0 5 0.00 Fog
11 42 26 10 25 18 9 96 72 38 30.04 29.92 29.81 10 9 7 21 4 25 0.00  
12 35 27 18 23 20 16 92 76 56 30.03 29.94 29.84 10 9 7 23 12 28 0.00  
13 34 21 7 21 14 6 100 87 61 30.22 30.09 29.97 10 9 5 7 2 10 0.00  
14 38 22 6 28 12 3 100 86 56 30.34 30.18 30.07 10 4 0 10 1 13 T Fog , Snow
15 41 32 22 28 25 22 92 79 54 30.47 30.30 30.11 10 10 7 10 3 14 0.00  
16 44 30 15 28 22 14 100 83 53 30.58 30.50 30.42 10 8 2 12 4 13 0.00  
17 47 30 12 27 20 11 96 80 42 30.50 30.35 30.19 10 9 1 12 2 13 0.00  
18 48 30 11 30 21 10 100 76 42 30.29 30.22 30.13 10 9 6 20 4 26 0.00  
19 42 28 14 27 20 12 92 77 44 30.42 30.35 30.28 10 10 7 16 4 21 0.00  
20 52 32 12 26 17 10 92 67 28 30.43 30.31 30.19 10 10 7 16 3 17 0.00  
21 39 22 5 18 7 -2 92 59 17 30.47 30.37 30.25 10 10 7 14 4 16 0.00  
22 36 19 2 13 8 0 91 66 32 30.66 30.57 30.42 10 10 10 12 1 14 0.00  
23 41 24 7 14 10 5 91 66 28 30.76 30.69 30.56 10 10 10 8 2 9 0.00  
24 42 25 8 16 10 5 83 64 29 30.75 30.63 30.48 10 10 7 10 2 12 0.00  
25 51 31 11 30 16 9 92 68 18 30.47 30.37 30.25 10 10 9 23 5 28 0.00  
26 40 27 14 29 19 12 100 90 64 30.37 30.31 30.26 10 4 0 14 1 17 T Fog
27 47 37 26 36 29 22 85 76 43 30.41 30.30 30.21 10 9 7 14 4 21 0.01 Rain
28 55 45 34 43 37 35 100 85 59 30.26 30.20 30.13 10 9 4 20 6 24 0.05 Rain
29 50 46 42 43 40 37 92 83 76 30.19 30.08 29.93 10 10 10 17 7 24 0.11 Rain
30 48 36 23 42 32 19 96 79 62 30.28 29.97 29.81 10 8 1 40 14 55 0.27 Rain , Snow
31 36 25 13 27 21 12 100 84 56 30.43 30.35 30.26 10 10 7 10 2 12 0.00