Weather History for KSJC - September, 2013

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Friday, September 27, 2013

  Actual Average Record
Temperature  
Mean Temperature 64 °F 68 °F  
Max Temperature 78 °F 80 °F 97 °F (1958)
Min Temperature 49 °F 55 °F 41 °F (1893)
Degree Days  
Heating Degree Days 1 1  
Month to date heating degree days 8 5  
Since 1 July heating degree days 9 8  
Cooling Degree Days 0 3  
Month to date cooling degree days 106 129  
Year to date cooling degree days 531 675  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 40 °F    
Average Humidity 50    
Maximum Humidity 80    
Minimum Humidity 20    
Precipitation  
Precipitation 0.00 in 0.02 in 0.59 in (1972)
Month to date precipitation 0.66 0.14  
Year to date precipitation 2.90 10.03  
Since 1 July precipitation 0.66 0.14  
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 5 mph (NW)    
Max Wind Speed 18 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 27, 2013 Rise Set
Actual Time 7:00 AM PDT 6:56 PM PDT
Civil Twilight 6:34 AM PDT 7:22 PM PDT
Nautical Twilight 6:03 AM PDT 7:52 PM PDT
Astronomical Twilight 5:33 AM PDT 8:23 PM PDT
Moon 12:07 AM PDT (9/27) 2:32 PM PDT (9/27)
Length of Visible Light 12h 48m
Length of Day
11h 56m
Last Quarter, 44% of the Moon is Illuminated
Sep 27
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full
Oct 26
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 55.9 °F 45.0 °F 67% 30.00 in 9.0 mi Calm Calm - N/A   Clear
1:53 AM 54.0 °F 45.0 °F 72% 30.01 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 52.0 °F 45.0 °F 77% 30.02 in 10.0 mi ESE 3.5 mph - N/A   Clear
3:53 AM 51.1 °F 43.0 °F 74% 30.02 in 10.0 mi East 3.5 mph - N/A   Clear
4:53 AM 52.0 °F 42.1 °F 69% 30.03 in 10.0 mi ESE 3.5 mph - N/A   Clear
5:53 AM 51.1 °F 45.0 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 48.9 °F 43.0 °F 80% 30.06 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 53.1 °F 44.1 °F 71% 30.08 in 10.0 mi East 3.5 mph - N/A   Clear
8:53 AM 57.0 °F 42.1 °F 57% 30.09 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 64.0 °F 41.0 °F 43% 30.10 in 10.0 mi West 4.6 mph - N/A   Clear
10:53 AM 68.0 °F 37.0 °F 32% 30.10 in 10.0 mi West 5.8 mph - N/A   Clear
11:53 AM 70.0 °F 36.0 °F 29% 30.09 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 73.0 °F 35.1 °F 25% 30.08 in 10.0 mi WNW 8.1 mph - N/A   Clear
1:53 PM 75.0 °F 33.1 °F 22% 30.05 in 10.0 mi WNW 8.1 mph - N/A   Clear
2:53 PM 77.0 °F 33.1 °F 20% 30.03 in 10.0 mi Variable 6.9 mph - N/A   Clear
3:53 PM 77.0 °F 34.0 °F 21% 30.02 in 10.0 mi West 9.2 mph - N/A   Clear
4:53 PM 75.9 °F 33.1 °F 21% 30.02 in 10.0 mi NW 13.8 mph - N/A   Clear
5:53 PM 73.9 °F 37.9 °F 27% 30.02 in 10.0 mi NW 15.0 mph - N/A   Clear
6:53 PM 68.0 °F 39.0 °F 35% 30.03 in 10.0 mi NW 16.1 mph 23.0 mph N/A   Clear
7:53 PM 66.0 °F 39.0 °F 37% 30.05 in 10.0 mi NNW 10.4 mph - N/A   Clear
8:53 PM 64.0 °F 39.9 °F 41% 30.06 in 10.0 mi NW 5.8 mph - N/A   Clear
9:53 PM 64.0 °F 43.0 °F 46% 30.08 in 10.0 mi North 5.8 mph - N/A   Clear
10:53 PM 62.1 °F 43.0 °F 50% 30.08 in 10.0 mi South 3.5 mph - N/A   Clear
11:53 PM 59.0 °F 43.0 °F 55% 30.07 in 10.0 mi Calm Calm - N/A   Clear