Weather History for Half Moon Bay, CA

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Week of December 9, 2012 through December 15, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 68 °F 56 °F 50 °F
Mean Temperature 56 °F 48 °F 44 °F
Min Temperature 44 °F 40 °F 35 °F
Degree Days  
Heating Degree Days (base 65) 22 17 9 119
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 1 0 10
Dew Point  
Dew Point 50 °F 42 °F 32 °F
Precipitation  
Precipitation 0.10 in 0.04 in 0.00 in 0.29 in
Snowdepth - - - -
Wind  
Wind 17 mph 5 mph 0 mph
Gust Wind 24 mph 18 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.23 in 30.00 in 29.83 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Dec. 14, 2012 Rise Set
Actual Time 7:17 AM PST 4:52 PM PST
Civil Twilight 6:47 AM PST 5:22 PM PST
Nautical Twilight 6:15 AM PST 5:54 PM PST
Astronomical Twilight 5:43 AM PST 6:26 PM PST
Moon 8:27 AM PST (12/14) 6:50 PM PST (12/14)
Length of Visible Light 10h 34m
Length of Day
9h 35m
Waxing Crescent, 3% of the Moon is Illuminated
Dec 14
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

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  
9 66 54 41 50 41 32 93 64 32 30.18 30.13 30.10 10 10 9 17 6 24 0.00  
10 68 56 44 50 43 39 93 60 40 30.23 30.16 30.11 10 10 10 15 7 24 0.00  
11 53 48 42 50 46 41 100 87 72 30.11 30.00 29.90 10 8 1 12 3 16 0.05 Rain
12 53 48 44 50 43 39 100 75 62 29.93 29.89 29.85 10 9 1 16 9 21 0.10 Rain
13 53 44 35 41 38 34 93 82 54 29.93 29.90 29.87 10 10 10 13 3 20 0.00  
14 51 44 37 45 40 36 100 86 66 30.03 29.92 29.83 10 9 3 7 2 - 0.07 Rain
15 50 44 37 46 41 36 100 87 76 30.09 30.03 29.99 10 9 3 15 4 17 0.07 Rain