Weather History for Half Moon Bay, CA

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Week of September 22, 2013 through September 28, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 71 °F 66 °F 62 °F
Mean Temperature 60 °F 56 °F 54 °F
Min Temperature 53 °F 47 °F 41 °F
Degree Days  
Heating Degree Days (base 65) 12 9 4 61
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 6 4 44
Dew Point  
Dew Point 61 °F 51 °F 37 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 20 mph 7 mph 0 mph
Gust Wind 30 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.12 in 30.00 in 29.87 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Sep. 24, 2013 Rise Set
Actual Time 6:59 AM PDT 7:03 PM PDT
Civil Twilight 6:33 AM PDT 7:29 PM PDT
Nautical Twilight 6:03 AM PDT 7:59 PM PDT
Astronomical Twilight 5:32 AM PDT 8:30 PM PDT
Moon 10:31 PM PDT (9/24) 12:13 PM PDT (9/24)
Length of Visible Light 12h 55m
Length of Day
12h 03m
Waning Gibbous, 72% of the Moon is Illuminated
Sep 24
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
22 64 56 48 57 54 48 100 92 73 30.03 29.99 29.93 10 6 0 15 4 18 0.00 Fog
23 71 60 50 61 55 48 100 85 57 30.03 30.00 29.97 10 8 0 20 8 25 0.00 Fog
24 66 58 50 57 55 50 100 88 73 30.04 29.99 29.96 9 6 0 17 6 24 0.00 Fog
25 62 58 53 54 52 48 94 80 63 29.99 29.93 29.87 10 7 5 20 14 30 0.00  
26 64 54 44 48 46 41 93 73 49 30.00 29.93 29.87 10 8 5 20 10 24 0.00  
27 68 54 41 54 44 37 100 70 35 30.11 30.07 30.01 10 8 2 20 5 24 0.00  
28 66 54 41 57 48 37 100 78 46 30.12 30.08 30.05 10 9 5 16 3 23 0.00