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Month of December, 2010

  Max Avg Min Sum
Temperature  
Max Temperature 71 °F 60 °F 52 °F
Mean Temperature 61 °F 53 °F 44 °F
Min Temperature 58 °F 45 °F 34 °F
Degree Days  
Heating Degree Days (base 65) 21 12 4 379
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 3 0 87
Dew Point  
Dew Point 57 °F 45 °F 27 °F
Precipitation  
Precipitation 0.76 in 0.15 in 0.00 in 4.14 in
Snowdepth - - - -
Wind  
Wind 31 mph 4 mph 0 mph
Gust Wind 45 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.39 in 30.06 in 29.60 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 17, 2010 Rise Set
Actual Time 7:13 AM PST 4:53 PM PST
Civil Twilight 6:44 AM PST 5:22 PM PST
Nautical Twilight 6:12 AM PST 5:54 PM PST
Astronomical Twilight 5:40 AM PST 6:26 PM PST
Moon 2:01 PM PST (12/17) 3:39 AM PST (12/17)
Length of Visible Light 10h 37m
Length of Day
9h 40m
Waxing Gibbous, 87% of the Moon is Illuminated
Dec 17
Waxing Gibbous
Dec 21
Full
Dec 27
Last Quarter
Jan 4
New
Jan 12
First Quarter

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 61 49 37 41 33 28 76 53 29 30.34 30.21 30.12 10 10 10 9 4 10 0.00  
2 59 49 39 43 38 32 76 64 51 30.12 30.10 30.08 10 10 10 9 2 12 0.00  
3 60 52 44 46 43 39 83 68 53 30.08 30.02 29.96 10 10 10 10 3 22 0.00  
4 59 55 50 48 44 41 83 69 55 30.09 30.03 29.94 10 10 8 10 2 12 0.04 Rain
5 67 57 46 50 47 43 96 76 56 30.09 30.01 29.89 10 10 5 22 7 35 0.23 Rain
6 63 55 46 50 48 43 89 73 56 30.34 30.28 30.12 10 8 1 20 6 30 0.17  
7 61 52 43 46 43 39 89 70 51 30.30 30.25 30.20 10 10 10 13 4 17 0.00  
8 61 53 45 54 46 40 93 72 51 30.28 30.23 30.19 10 9 2 9 3 10 0.04 Rain
9 62 59 55 57 54 52 93 87 80 30.27 30.22 30.17 10 6 1 7 1 10 0.01 Rain
10 62 57 52 56 55 51 100 89 78 30.31 30.25 30.19 10 5 0 8 1 9 T Fog , Rain
11 65 58 50 55 52 50 100 86 72 30.34 30.27 30.22 10 3 0 8 3 9 0.00 Fog
12 71 59 47 53 49 45 93 75 57 30.29 30.24 30.16 10 10 9 13 2 16 0.00  
13 61 52 42 50 45 39 93 79 64 30.16 30.08 30.01 10 4 0 8 2 10 0.00 Fog
14 61 54 47 57 52 46 93 84 75 30.09 30.02 29.96 10 7 1 13 4 18 0.09 Rain
15 56 49 42 47 43 36 92 77 61 30.07 30.02 29.98 10 10 9 12 4 15 0.00  
16 57 47 37 46 38 31 83 64 45 30.01 29.96 29.87 10 10 8 9 3 10 0.04 Rain
17 59 54 49 53 49 45 86 74 62 29.88 29.81 29.75 10 9 5 17 3 23 0.22 Rain
18 64 61 58 56 54 50 87 78 69 29.89 29.83 29.79 10 7 2 21 8 29 0.20 Rain
19 65 58 50 55 51 44 86 75 63 29.81 29.71 29.60 10 8 2 31 9 45 0.60 Rain
20 53 50 46 46 43 40 86 79 71 29.86 29.81 29.76 10 9 3 22 6 26 0.23 Rain
21 60 51 41 49 44 38 89 70 51 29.87 29.82 29.75 10 9 4 13 4 20 0.36 Rain
22 59 55 50 51 47 44 93 82 71 30.11 29.87 29.67 10 10 10 15 5 18 0.08 Rain
23 57 50 43 44 42 39 89 75 61 30.27 30.21 30.12 10 10 10 10 3 13 0.00  
24 59 50 40 46 42 37 89 73 57 30.23 30.14 29.98 10 10 10 10 3 26 0.00  
25 62 54 45 49 45 42 93 72 51 30.11 29.93 29.85 10 8 2 25 5 36 0.76 Rain
26 59 52 45 46 42 38 86 72 57 30.39 30.29 30.12 10 10 10 12 6 15 0.00  
27 59 50 41 46 41 37 82 70 57 30.39 30.33 30.27 10 10 10 9 5 20 0.00  
28 59 51 42 52 42 37 83 65 47 30.27 30.08 29.78 10 9 5 25 5 38 0.61 Rain
29 59 53 46 54 43 27 93 71 49 30.00 29.86 29.74 10 9 4 26 16 37 0.46 Rain
30 53 44 34 42 35 27 82 64 45 30.08 30.03 29.97 10 10 10 17 7 25 T  
31 52 46 40 42 39 36 85 74 63 30.12 30.09 30.03 10 10 10 8 2 9 T