Weather History for KSJC - May, 2013

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Saturday, May 11, 2013

  Actual Average Record
Temperature  
Mean Temperature 68 °F 63 °F  
Max Temperature 83 °F 75 °F 96 °F (1934)
Min Temperature 53 °F 52 °F 41 °F (1894)
Degree Days  
Heating Degree Days 0 3  
Month to date heating degree days 18 38  
Since 1 July heating degree days 1997 1942  
Cooling Degree Days 3 1  
Month to date cooling degree days 30 11  
Year to date cooling degree days 55 30  
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 66    
Maximum Humidity 93    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.02 in 0.37 in (1942)
Month to date precipitation T 0.23  
Year to date precipitation 2.19 9.64  
Since 1 July precipitation 9.38  
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 6 mph (WNW)    
Max Wind Speed 16 mph    
Max Gust Speed 18 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 11, 2013 Rise Set
Actual Time 6:02 AM PDT 8:06 PM PDT
Civil Twilight 5:33 AM PDT 8:35 PM PDT
Nautical Twilight 4:57 AM PDT 9:10 PM PDT
Astronomical Twilight 4:19 AM PDT 9:49 PM PDT
Moon 7:14 AM PDT (5/11) 9:50 PM PDT (5/11)
Length of Visible Light 15h 02m
Length of Day
14h 04m
Waxing Crescent, 3% of the Moon is Illuminated
May 11
Waxing Crescent
May 17
First Quarter
May 24
Full
May 31
Last Quarter
Jun 8
New

Hourly Weather History & Observations

Time (PDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 54.0 °F - 50.0 °F 86% 30.17 in 10.0 mi WNW 4.6 mph - N/A   Clear
1:15 AM 53.6 °F - 51.8 °F 94% 30.17 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
1:53 AM 55.0 °F - 52.0 °F 89% 30.16 in 10.0 mi NW 3.5 mph - N/A   Overcast
2:53 AM 55.0 °F - 52.0 °F 89% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
3:53 AM 55.0 °F - 52.0 °F 89% 30.13 in 9.0 mi ESE 3.5 mph - N/A   Overcast
4:53 AM 55.0 °F - 52.0 °F 89% 30.11 in 9.0 mi South 3.5 mph - N/A   Overcast
5:17 AM 53.6 °F - 51.8 °F 94% 30.10 in 9.0 mi SSE 3.5 mph - N/A   Overcast
5:53 AM 54.0 °F - 51.1 °F 90% 30.10 in 9.0 mi Calm Calm - N/A   Scattered Clouds
6:53 AM 55.0 °F - 51.1 °F 86% 30.12 in 8.0 mi NNW 4.6 mph - N/A   Scattered Clouds
7:03 AM 55.4 °F - 51.8 °F 88% 30.12 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
7:53 AM 57.0 °F - 53.1 °F 87% 30.12 in 6.0 mi NNW 4.6 mph - N/A   Overcast
8:35 AM 59.0 °F - 53.6 °F 82% 30.12 in 6.0 mi Variable 3.5 mph - N/A   Haze
8:53 AM 60.1 °F - 53.1 °F 78% 30.12 in 7.0 mi Calm Calm - N/A   Clear
9:53 AM 64.0 °F - 53.1 °F 67% 30.11 in 8.0 mi Calm Calm - N/A   Clear
10:53 AM 70.0 °F - 53.1 °F 55% 30.10 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 75.0 °F - 54.0 °F 48% 30.09 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 77.0 °F - 54.0 °F 45% 30.08 in 10.0 mi Variable 5.8 mph - N/A   Clear
1:53 PM 80.1 °F 80.0 °F 54.0 °F 40% 30.08 in 10.0 mi NW 10.4 mph - N/A   Clear
2:53 PM 81.0 °F 80.4 °F 53.1 °F 38% 30.06 in 10.0 mi West 11.5 mph - N/A   Clear
3:53 PM 82.0 °F 81.4 °F 55.0 °F 39% 30.05 in 10.0 mi WNW 10.4 mph - N/A   Clear
4:53 PM 77.0 °F - 55.9 °F 48% 30.05 in 10.0 mi WNW 12.7 mph - N/A   Clear
5:53 PM 73.0 °F - 55.9 °F 55% 30.05 in 10.0 mi WNW 11.5 mph - N/A   Clear
6:53 PM 72.0 °F - 54.0 °F 53% 30.05 in 10.0 mi WNW 11.5 mph - N/A   Clear
7:53 PM 66.9 °F - 53.1 °F 61% 30.07 in 10.0 mi WNW 11.5 mph - N/A   Clear
8:53 PM 63.0 °F - 55.9 °F 78% 30.09 in 10.0 mi West 9.2 mph - N/A   Clear
9:53 PM 61.0 °F - 54.0 °F 78% 30.12 in 10.0 mi West 6.9 mph - N/A   Clear
10:53 PM 59.0 °F - 54.0 °F 83% 30.14 in 10.0 mi WNW 8.1 mph - N/A   Clear
11:53 PM 57.9 °F - 54.0 °F 87% 30.15 in 10.0 mi WNW 6.9 mph - N/A   Clear