Weather History for Half Moon Bay, CA

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Tuesday, December 25, 2012

  Actual Average Record
Temperature  
Mean Temperature 47 °F -  
Max Temperature 53 °F 59 °F 69 °F (2013)
Min Temperature 41 °F 41 °F 33 °F (2011)
Degree Days  
Heating Degree Days 18    
Moisture  
Dew Point 43 °F    
Average Humidity 83    
Maximum Humidity 94    
Minimum Humidity 71    
Precipitation  
Precipitation 0.35 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.99 in    
Wind  
Wind Speed 6 mph (South)    
Max Wind Speed 26 mph    
Max Gust Speed 45 mph    
Visibility 8 miles    
Events Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 25, 2012 Rise Set
Actual Time 7:23 AM PST 4:57 PM PST
Civil Twilight 6:53 AM PST 5:27 PM PST
Nautical Twilight 6:20 AM PST 6:00 PM PST
Astronomical Twilight 5:49 AM PST 6:31 PM PST
Moon 3:09 PM PST (12/25) 5:01 AM PST (12/25)
Length of Visible Light 10h 33m
Length of Day
9h 34m
Waxing Gibbous, 94% of the Moon is Illuminated
Dec 25
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 42.8 °F - 37.4 °F 81% 30.16 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 41.0 °F 39.0 °F 37.4 °F 87% 30.16 in 10.0 mi NE 3.5 mph - N/A   Clear
12:55 AM 41.0 °F - 37.4 °F 87% 30.15 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 41.0 °F 39.0 °F 37.4 °F 87% 30.15 in 10.0 mi ENE 3.5 mph - N/A   Clear
1:35 AM 41.0 °F - 37.4 °F 87% 30.14 in 10.0 mi Calm Calm - N/A   Clear
1:55 AM 41.0 °F 37.1 °F 37.4 °F 87% 30.14 in 10.0 mi ENE 5.8 mph - N/A   Clear
2:15 AM 42.8 °F - 37.4 °F 81% 30.14 in 10.0 mi Calm Calm - N/A   Clear
2:35 AM 41.0 °F - 39.2 °F 93% 30.14 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:55 AM 41.0 °F - 39.2 °F 93% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:15 AM 44.6 °F - 37.4 °F 76% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:35 AM 44.6 °F - 39.2 °F 81% 30.11 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:55 AM 44.6 °F - 39.2 °F 81% 30.09 in 10.0 mi Calm Calm - N/A   Clear
4:15 AM 46.4 °F - 37.4 °F 71% 30.09 in 10.0 mi Calm Calm - N/A   Clear
4:35 AM 46.4 °F 43.5 °F 39.2 °F 76% 30.09 in 10.0 mi SSE 5.8 mph - N/A   Clear
4:55 AM 46.4 °F 42.4 °F 37.4 °F 71% 30.07 in 10.0 mi SE 8.1 mph - N/A   Clear
5:15 AM 46.4 °F - 37.4 °F 71% 30.07 in 10.0 mi Calm Calm - N/A   Clear
5:35 AM 46.4 °F - 37.4 °F 71% 30.09 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 44.6 °F 41.4 °F 39.2 °F 81% 30.10 in 10.0 mi ENE 5.8 mph - N/A   Scattered Clouds
6:15 AM 44.6 °F - 39.2 °F 81% 30.11 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:35 AM 44.6 °F - 39.2 °F 81% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
6:55 AM 44.6 °F - 39.2 °F 81% 30.11 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
7:15 AM 44.6 °F 43.1 °F 39.2 °F 81% 30.11 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
7:35 AM 46.4 °F - 41.0 °F 81% 30.12 in 10.0 mi Calm Calm - N/A   Overcast
7:55 AM 46.4 °F - 41.0 °F 81% 30.10 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:15 AM 46.4 °F - 41.0 °F 81% 30.10 in 8.0 mi Calm Calm - N/A   Overcast
8:35 AM 46.4 °F - 42.8 °F 87% 30.11 in 7.0 mi Calm Calm - N/A Rain Light Rain
8:55 AM 48.2 °F - 42.8 °F 82% 30.11 in 4.0 mi South 3.5 mph - N/A Rain Light Rain
9:15 AM 48.2 °F - 44.6 °F 87% 30.09 in 7.0 mi SE 10.4 mph - N/A Rain Light Rain
9:35 AM 48.2 °F - 42.8 °F 82% 30.10 in 5.0 mi ESE 8.1 mph - 0.01 in Rain Light Rain
10:15 AM 48.2 °F - 42.8 °F 82% 30.08 in 10.0 mi SSE 8.1 mph - N/A   Clear
10:35 AM 48.2 °F - 42.8 °F 82% 30.06 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
10:55 AM 48.2 °F - 44.6 °F 87% 30.05 in 7.0 mi South 8.1 mph - N/A   Mostly Cloudy
11:15 AM 50.0 °F - 42.8 °F 76% 30.04 in 9.0 mi South 4.6 mph - N/A   Scattered Clouds
11:35 AM 50.0 °F - 44.6 °F 82% 30.02 in 8.0 mi South 5.8 mph - N/A   Scattered Clouds
11:55 AM 50.0 °F - 42.8 °F 76% 30.01 in 7.0 mi South 9.2 mph - N/A Rain Light Rain
12:15 PM 50.0 °F - 44.6 °F 82% 29.99 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
12:35 PM 50.0 °F - 44.6 °F 82% 29.98 in 8.0 mi SSE 6.9 mph - N/A Rain Light Rain
12:55 PM 50.0 °F - 44.6 °F 82% 29.97 in 5.0 mi SSE 10.4 mph - 0.01 in Rain Light Rain
1:15 PM 50.0 °F - 44.6 °F 82% 29.95 in 3.0 mi SSE 9.2 mph - 0.01 in Rain Light Rain
1:35 PM 50.0 °F - 46.4 °F 87% 29.93 in 4.0 mi SE 10.4 mph - 0.02 in Rain Light Rain
1:55 PM 50.0 °F - 44.6 °F 82% 29.92 in 7.0 mi SE 10.4 mph - 0.02 in Rain Light Rain
2:15 PM 50.0 °F - 44.6 °F 82% 29.91 in 3.0 mi SE 10.4 mph - 0.01 in   Haze
2:35 PM 50.0 °F - 44.6 °F 82% 29.89 in 6.0 mi SE 9.2 mph - 0.02 in Rain Light Rain
2:55 PM 50.0 °F - 44.6 °F 82% 29.88 in 10.0 mi SSE 13.8 mph 17.3 mph 0.02 in   Overcast
3:15 PM 51.8 °F - 44.6 °F 76% 29.87 in 9.0 mi SSE 10.4 mph - N/A   Overcast
3:35 PM 51.8 °F - 44.6 °F 76% 29.86 in 10.0 mi South 16.1 mph 20.7 mph N/A   Overcast
3:55 PM 51.8 °F - 44.6 °F 76% 29.86 in 3.0 mi South 24.2 mph - 0.01 in   Haze
4:15 PM 50.0 °F - 44.6 °F 82% 29.88 in 1.8 mi South 24.2 mph 29.9 mph 0.01 in Rain Rain
4:35 PM 50.0 °F - 46.4 °F 87% 29.86 in 2.5 mi SSE 16.1 mph 26.5 mph 0.10 in   Overcast
4:55 PM 48.2 °F - 46.4 °F 93% 29.85 in 4.0 mi SSE 21.9 mph 29.9 mph 0.13 in Rain Light Rain
5:15 PM 50.0 °F - 46.4 °F 87% 29.84 in 2.0 mi South 18.4 mph 28.8 mph 0.04 in Rain Light Rain
5:35 PM 50.0 °F - 48.2 °F 94% 29.82 in 4.0 mi South 24.2 mph 31.1 mph 0.06 in Rain Light Rain
5:55 PM 50.0 °F - 48.2 °F 94% 29.83 in 3.0 mi South 26.5 mph 44.9 mph 0.06 in Rain Light Rain
6:15 PM 50.0 °F - 48.2 °F 94% 29.82 in 8.0 mi SSW 18.4 mph 38.0 mph 0.01 in   Overcast
6:35 PM 50.0 °F - 48.2 °F 94% 29.81 in 8.0 mi South 24.2 mph 36.8 mph 0.01 in Rain Light Rain
6:55 PM 51.8 °F - 48.2 °F 88% 29.81 in 2.5 mi South 21.9 mph 32.2 mph 0.03 in   Overcast
7:15 PM 51.8 °F - 50.0 °F 94% 29.81 in 2.5 mi South 23.0 mph 34.5 mph 0.05 in Rain Heavy Rain
7:35 PM 53.6 °F - 50.0 °F 88% 29.82 in 5.0 mi West 17.3 mph 24.2 mph 0.06 in   Overcast
7:55 PM 53.6 °F - 50.0 °F 88% 29.84 in 3.0 mi WNW 16.1 mph 23.0 mph 0.06 in Rain Light Rain
8:15 PM 53.6 °F - 50.0 °F 88% 29.84 in 7.0 mi NW 11.5 mph 17.3 mph N/A   Overcast
8:35 PM 53.6 °F - 48.2 °F 82% 29.85 in 7.0 mi WNW 12.7 mph 19.6 mph N/A   Overcast
8:55 PM 53.6 °F - 48.2 °F 82% 29.86 in 7.0 mi WNW 16.1 mph 19.6 mph N/A   Overcast
9:15 PM 53.6 °F - 48.2 °F 82% 29.86 in 6.0 mi WNW 13.8 mph 20.7 mph N/A   Overcast
9:35 PM 53.6 °F - 50.0 °F 88% 29.86 in 6.0 mi NNW 15.0 mph 18.4 mph N/A   Mostly Cloudy
9:55 PM 50.0 °F - 46.4 °F 87% 29.87 in 7.0 mi North 4.6 mph - N/A Rain Light Rain
10:15 PM 51.8 °F - 46.4 °F 82% 29.87 in 8.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
10:35 PM 53.6 °F - 48.2 °F 82% 29.87 in 7.0 mi WNW 15.0 mph 20.7 mph N/A   Mostly Cloudy
11:15 PM 51.8 °F - 46.4 °F 82% 29.89 in 7.0 mi NW 13.8 mph - N/A   Mostly Cloudy
11:35 PM 51.8 °F - 44.6 °F 76% 29.89 in 9.0 mi NW 13.8 mph 20.7 mph N/A   Mostly Cloudy
11:55 PM 51.8 °F - 46.4 °F 82% 29.89 in 8.0 mi NW 11.5 mph 17.3 mph N/A   Overcast