Weather History for KOAK - September, 2012

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Thursday, September 13, 2012

  Actual Average Record
Temperature  
Mean Temperature 63 °F 65 °F  
Max Temperature 70 °F 75 °F 98 °F (2003)
Min Temperature 55 °F 55 °F 50 °F (1955)
Degree Days  
Heating Degree Days 2 2  
Month to date heating degree days 44 24  
Since 1 July heating degree days 211 164  
Cooling Degree Days 0 2  
Month to date cooling degree days 0 26  
Year to date cooling degree days 25 106  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 77    
Maximum Humidity 93    
Minimum Humidity 61    
Precipitation  
Precipitation 0.00 in 0.01 in 0.17 in (2009)
Month to date precipitation T 0.05  
Year to date precipitation 11.97 13.33  
Since 1 July precipitation 0.03 0.11  
Sea Level Pressure  
Sea Level Pressure 30.07 in    
Wind  
Wind Speed 7 mph (WNW)    
Max Wind Speed 18 mph    
Max Gust Speed 21 mph    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 13, 2012 Rise Set
Actual Time 6:49 AM PDT 7:18 PM PDT
Civil Twilight 6:23 AM PDT 7:45 PM PDT
Nautical Twilight 5:52 AM PDT 8:16 PM PDT
Astronomical Twilight 5:20 AM PDT 8:47 PM PDT
Moon 4:16 AM PDT (9/13) 5:43 PM PDT (9/13)
Length of Visible Light 13h 21m
Length of Day
12h 29m
Waning Crescent, 7% of the Moon is Illuminated
Sep 13
Waning Crescent
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 57.0 °F 55.0 °F 93% 30.05 in 8.0 mi NNW 4.6 mph - N/A   Partly Cloudy
1:28 AM 57.2 °F 55.4 °F 94% 30.06 in 8.0 mi North 4.6 mph - N/A   Overcast
1:53 AM 57.0 °F 55.0 °F 93% 30.06 in 8.0 mi Calm Calm - N/A   Overcast
2:47 AM 55.4 °F 55.4 °F 100% 30.06 in 9.0 mi Calm Calm - N/A   Partly Cloudy
2:53 AM 55.9 °F 54.0 °F 93% 30.06 in 9.0 mi Calm Calm - N/A   Partly Cloudy
3:53 AM 55.0 °F 53.1 °F 93% 30.06 in 7.0 mi Calm Calm - N/A   Partly Cloudy
4:53 AM 55.9 °F 54.0 °F 93% 30.06 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
5:02 AM 55.4 °F 53.6 °F 94% 30.06 in 4.0 mi NNW 3.5 mph - N/A   Overcast
5:26 AM 55.4 °F 53.6 °F 94% 30.06 in 8.0 mi Calm Calm - N/A   Overcast
5:53 AM 55.9 °F 54.0 °F 93% 30.07 in 6.0 mi Calm Calm - N/A   Overcast
6:53 AM 57.0 °F 55.0 °F 93% 30.09 in 3.0 mi NW 3.5 mph - N/A   Overcast
7:53 AM 55.9 °F 55.0 °F 97% 30.10 in 3.0 mi NW 4.6 mph - N/A   Overcast
8:53 AM 57.9 °F 55.0 °F 90% 30.11 in 3.0 mi Variable 3.5 mph - N/A   Overcast
9:44 AM 59.0 °F 55.4 °F 88% 30.11 in 6.0 mi West 4.6 mph - N/A   Scattered Clouds
9:53 AM 60.1 °F 55.0 °F 83% 30.11 in 6.0 mi West 4.6 mph - N/A   Haze
10:53 AM 61.0 °F 55.0 °F 81% 30.12 in 9.0 mi West 8.1 mph - N/A   Scattered Clouds
11:53 AM 64.9 °F 55.0 °F 70% 30.10 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
12:53 PM 68.0 °F 55.0 °F 63% 30.08 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
1:53 PM 69.1 °F 54.0 °F 58% 30.06 in 10.0 mi NW 11.5 mph - N/A   Mostly Cloudy
2:53 PM 69.1 °F 55.0 °F 61% 30.04 in 10.0 mi WNW 12.7 mph - N/A   Mostly Cloudy
3:11 PM 69.8 °F 55.4 °F 60% 30.03 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
3:53 PM 66.9 °F 54.0 °F 63% 30.03 in 10.0 mi WNW 17.3 mph - N/A   Mostly Cloudy
4:53 PM 66.0 °F 55.0 °F 68% 30.03 in 10.0 mi WNW 12.7 mph - N/A   Mostly Cloudy
5:53 PM 64.0 °F 55.0 °F 73% 30.04 in 10.0 mi WNW 13.8 mph - N/A   Mostly Cloudy
6:53 PM 61.0 °F 54.0 °F 78% 30.04 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
7:53 PM 59.0 °F 54.0 °F 83% 30.05 in 10.0 mi WNW 9.2 mph - N/A   Scattered Clouds
8:53 PM 59.0 °F 54.0 °F 83% 30.08 in 10.0 mi West 10.4 mph - N/A   Partly Cloudy
9:53 PM 57.9 °F 54.0 °F 87% 30.09 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
10:53 PM 57.0 °F 54.0 °F 89% 30.09 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
11:53 PM 55.9 °F 53.1 °F 90% 30.09 in 9.0 mi NW 5.8 mph - N/A   Partly Cloudy