Weather History for KOAK - December, 2012

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Friday, December 7, 2012

  Actual Average Record
Temperature  
Mean Temperature 53 °F 50 °F  
Max Temperature 63 °F 58 °F 69 °F (1975)
Min Temperature 43 °F 42 °F 32 °F (1960)
Degree Days  
Heating Degree Days 12 15  
Month to date heating degree days 54 104  
Since 1 July heating degree days 675 779  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 61 138  
Growing Degree Days 3 (Base 50)    
Moisture  
Dew Point 46 °F    
Average Humidity 71    
Maximum Humidity 93    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in 0.11 in 0.78 in (2004)
Month to date precipitation 2.11 0.67  
Year to date precipitation 19.22 17.82  
Since 1 July precipitation 7.28 4.60  
Sea Level Pressure  
Sea Level Pressure 30.12 in    
Wind  
Wind Speed 3 mph (NNW)    
Max Wind Speed 9 mph    
Max Gust Speed 29 mph    
Visibility 10 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 07, 2012 Rise Set
Actual Time 7:11 AM PST 4:50 PM PST
Civil Twilight 6:42 AM PST 5:19 PM PST
Nautical Twilight 6:09 AM PST 5:51 PM PST
Astronomical Twilight 5:37 AM PST 6:23 PM PST
Moon 12:42 AM PST (12/7) 12:44 PM PST (12/7)
Length of Visible Light 10h 37m
Length of Day
9h 38m
Last Quarter, 37% of the Moon is Illuminated
Dec 7
Last Quarter
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 50.0 °F - 46.0 °F 86% 30.14 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 46.9 °F - 44.1 °F 90% 30.14 in 9.0 mi NE 3.5 mph - N/A   Partly Cloudy
2:53 AM 46.9 °F - 44.1 °F 90% 30.13 in 8.0 mi NNE 3.5 mph - N/A   Clear
3:53 AM 48.0 °F - 46.0 °F 93% 30.12 in 10.0 mi Calm Calm - N/A   Clear
4:07 AM 46.4 °F - 44.6 °F 93% 30.13 in 1.8 mi Calm Calm - N/A   Clear
4:09 AM 46.4 °F - 44.6 °F 93% 30.13 in 7.0 mi Calm Calm - N/A   Clear
4:53 AM 48.9 °F - 45.0 °F 86% 30.13 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 45.0 °F 43.5 °F 42.1 °F 90% 30.12 in 10.0 mi NE 3.5 mph - N/A   Clear
6:53 AM 44.1 °F - 41.0 °F 89% 30.13 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:53 AM 46.9 °F - 43.0 °F 86% 30.15 in 10.0 mi NE 3.5 mph - N/A Fog Shallow Fog
8:53 AM 51.1 °F - 48.0 °F 89% 30.16 in 10.0 mi ESE 3.5 mph - N/A   Scattered Clouds
9:53 AM 55.0 °F - 48.9 °F 80% 30.17 in 10.0 mi South 3.5 mph - N/A   Scattered Clouds
10:53 AM 55.0 °F - 48.0 °F 77% 30.16 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:53 AM 57.0 °F - 48.0 °F 72% 30.14 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
12:53 PM 60.1 °F - 48.0 °F 64% 30.12 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
1:53 PM 62.1 °F - 46.0 °F 56% 30.09 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
2:53 PM 62.1 °F - 43.0 °F 50% 30.09 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
3:53 PM 60.1 °F - 50.0 °F 69% 30.09 in 10.0 mi West 6.9 mph - N/A   Scattered Clouds
4:53 PM 57.2 °F - 50.0 °F 77% 30.09 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
5:53 PM 55.9 °F - 48.0 °F 75% 30.09 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
6:53 PM 55.0 °F - 46.9 °F 74% 30.09 in 10.0 mi NNW 4.6 mph - N/A   Partly Cloudy
7:53 PM 51.1 °F - 46.9 °F 86% 30.09 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:53 PM 48.9 °F - 45.0 °F 86% 30.09 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 50.0 °F - 45.0 °F 83% 30.09 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:53 PM 46.9 °F - 43.0 °F 86% 30.10 in 10.0 mi NNE 4.6 mph - N/A   Scattered Clouds
11:53 PM 46.0 °F 44.8 °F 42.1 °F 86% 30.10 in 10.0 mi ENE 3.5 mph - N/A   Scattered Clouds