Weather History for KPAO - December, 2012

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Thursday, December 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 50 °F -  
Max Temperature 59 °F 55 °F 68 °F (1999)
Min Temperature 41 °F 37 °F 26 °F (1965)
Degree Days  
Heating Degree Days 15    
Moisture  
Dew Point 36 °F    
Average Humidity 53    
Maximum Humidity 58    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 14 mph (SSE)    
Max Wind Speed 18 mph    
Max Gust Speed 23 mph    
Visibility 20 miles    
Events      
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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Astronomy

Dec. 20, 2012 Rise Set
Actual Time 7:19 AM PST 4:53 PM PST
Civil Twilight 6:49 AM PST 5:23 PM PST
Nautical Twilight 6:17 AM PST 5:55 PM PST
Astronomical Twilight 5:45 AM PST 6:27 PM PST
Moon 12:08 PM PST (12/20) 12:17 AM PST (12/20)
Length of Visible Light 10h 33m
Length of Day
9h 34m
First Quarter, 56% of the Moon is Illuminated
Dec 20
First Quarter
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
6:47 AM 41.0 °F 34.3 °F 26.6 °F 57% 30.20 in 30.0 mi South 11.5 mph - N/A   Scattered Clouds
7:47 AM 44.6 °F 38.8 °F 28.4 °F 53% 30.19 in 30.0 mi SSE 11.5 mph - N/A   Scattered Clouds
8:47 AM 48.2 °F - 30.2 °F 50% 30.18 in 30.0 mi SSE 11.5 mph - N/A   Scattered Clouds
9:55 AM 50.0 °F - 33.8 °F 54% 30.18 in 30.0 mi SSE 16.1 mph - N/A   Clear
10:52 AM 53.6 °F - 35.6 °F 51% 30.16 in 30.0 mi SE 18.4 mph - N/A   Clear
11:55 AM 57.2 °F - 37.4 °F 48% 30.12 in 30.0 mi SSE 17.3 mph - N/A   Scattered Clouds
12:47 PM 59.0 °F - 39.2 °F 48% 30.08 in 30.0 mi SSE 17.3 mph - N/A   Scattered Clouds
1:47 PM 59.0 °F - 39.2 °F 48% 30.06 in 30.0 mi SSE 13.8 mph - N/A   Scattered Clouds
3:47 PM 57.2 °F - 41.0 °F 55% 30.04 in 30.0 mi SE 13.8 mph 23.0 mph N/A   Mostly Cloudy
4:47 PM 55.4 °F - 39.2 °F 54% 30.02 in 30.0 mi ESE 17.3 mph - N/A   Mostly Cloudy
6:47 PM 51.8 °F - 37.4 °F 58% 30.04 in 20.0 mi SSE 17.3 mph - N/A   Scattered Clouds
7:47 PM 53.6 °F - 37.4 °F 54% 30.04 in 20.0 mi SSE 11.5 mph - N/A   Scattered Clouds
8:47 PM 51.8 °F - 37.4 °F 58% 30.03 in 20.0 mi SSE 10.4 mph - N/A   Scattered Clouds