Weather History for KSAN - December, 2011

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Friday, December 16, 2011

  Actual Average Record
Temperature  
Mean Temperature 55 °F 56 °F  
Max Temperature 63 °F 64 °F 84 °F (1980)
Min Temperature 46 °F 48 °F 38 °F (1892)
Degree Days  
Heating Degree Days 10 9  
Month to date heating degree days 158 130  
Since 1 July heating degree days 322 275  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 573 720  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 39 °F    
Average Humidity 63    
Maximum Humidity 86    
Minimum Humidity 39    
Precipitation  
Precipitation T in 0.05 in 1.36 in (1987)
Month to date precipitation 0.84 0.71  
Year to date precipitation 9.06 9.52  
Since 1 July precipitation 4.55 2.49  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Year to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 6 mph (NE)    
Max Wind Speed 23 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 16, 2011 Rise Set
Actual Time 6:44 AM PST 4:44 PM PST
Civil Twilight 6:16 AM PST 5:11 PM PST
Nautical Twilight 5:46 AM PST 5:42 PM PST
Astronomical Twilight 5:15 AM PST 6:12 PM PST
Moon 11:03 PM PST (12/16) 10:49 AM PST (12/16)
Length of Visible Light 10h 55m
Length of Day
10h 00m
Waning Gibbous, 63% of the Moon is Illuminated
Dec 16
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter
Jan 8
Full

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 52.0 °F 45.0 °F 77% 30.05 in 8.0 mi North 5.8 mph - N/A   Overcast
1:51 AM 52.0 °F 44.1 °F 74% 30.04 in 9.0 mi Calm Calm - N/A   Scattered Clouds
2:51 AM 48.9 °F 44.1 °F 83% 30.04 in 8.0 mi Calm Calm - N/A   Scattered Clouds
3:51 AM 48.9 °F 43.0 °F 80% 30.04 in 8.0 mi NNE 3.5 mph - N/A   Scattered Clouds
4:51 AM 48.0 °F 42.1 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:51 AM 46.9 °F 42.1 °F 83% 30.04 in 9.0 mi Calm Calm - N/A   Partly Cloudy
6:51 AM 48.0 °F 41.0 °F 77% 30.05 in 10.0 mi North 3.5 mph - N/A   Scattered Clouds
7:51 AM 51.1 °F 39.0 °F 63% 30.06 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:51 AM 57.0 °F 37.9 °F 49% 30.07 in 10.0 mi NNE 6.9 mph - N/A   Scattered Clouds
9:51 AM 60.1 °F 37.0 °F 42% 30.09 in 10.0 mi NE 9.2 mph 18.4 mph N/A   Mostly Cloudy
10:51 AM 61.0 °F 36.0 °F 39% 30.07 in 10.0 mi ENE 12.7 mph 20.7 mph N/A   Mostly Cloudy
11:51 AM 61.0 °F 37.0 °F 41% 30.05 in 10.0 mi NE 12.7 mph 17.3 mph N/A   Mostly Cloudy
12:51 PM 62.1 °F 37.0 °F 39% 30.03 in 10.0 mi East 10.4 mph - N/A   Mostly Cloudy
1:51 PM 62.1 °F 37.0 °F 39% 30.02 in 10.0 mi East 10.4 mph 26.5 mph N/A   Mostly Cloudy
2:51 PM 61.0 °F 36.0 °F 39% 30.02 in 10.0 mi ENE 15.0 mph 27.6 mph N/A   Mostly Cloudy
3:51 PM 60.1 °F 37.9 °F 44% 30.03 in 10.0 mi ENE 8.1 mph - 0.00 in Rain Light Rain
4:11 PM 60.8 °F 53.6 °F 77% - - North - - N/A   Unknown
4:51 PM 61.0 °F 32.0 °F 34% 30.04 in 10.0 mi East 8.1 mph - 0.00 in   Mostly Cloudy
5:51 PM 62.1 °F 30.9 °F 31% 30.06 in 10.0 mi ENE 9.2 mph 19.6 mph N/A   Mostly Cloudy
6:51 PM 61.0 °F 32.0 °F 34% 30.06 in 10.0 mi ENE 6.9 mph 17.3 mph N/A   Overcast
7:51 PM 60.1 °F 34.0 °F 38% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:51 PM 60.1 °F 35.1 °F 39% 30.06 in 10.0 mi SSW 3.5 mph - N/A   Mostly Cloudy
9:51 PM 57.9 °F 37.0 °F 46% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:51 PM 55.9 °F 39.0 °F 53% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:51 PM 55.0 °F 39.0 °F 55% 30.05 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy