Weather History for KSEA - July, 2013

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Saturday, July 13, 2013

  Actual Average Record
Temperature  
Mean Temperature 66 °F 66 °F  
Max Temperature 79 °F 76 °F 93 °F (1961)
Min Temperature 52 °F 56 °F 50 °F (2010)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 5 28  
Since 1 June heating degree days 54 172  
Since 1 July heating degree days 5 28  
Cooling Degree Days 1 2  
Month to date cooling degree days 42 22  
Year to date cooling degree days 104 49  
Since 1 June cooling degree days 91 43  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 56    
Maximum Humidity 83    
Minimum Humidity 28    
Precipitation  
Precipitation 0.00 in 0.02 in 0.85 in (1981)
Month to date precipitation 0.00 0.36  
Year to date precipitation 18.05 19.37  
Sea Level Pressure  
Sea Level Pressure 30.18 in    
Wind  
Wind Speed 7 mph (NW)    
Max Wind Speed 15 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jul. 13, 2013 Rise Set
Actual Time 5:26 AM PDT 9:03 PM PDT
Civil Twilight 4:47 AM PDT 9:42 PM PDT
Nautical Twilight 3:55 AM PDT 10:34 PM PDT
Astronomical Twilight 2:43 AM PDT 11:44 PM PDT
Moon 11:14 AM PDT (7/13) 11:18 PM PDT (7/13)
Length of Visible Light 16h 54m
Length of Day
15h 37m
Waxing Crescent, 26% of the Moon is Illuminated
Jul 13
Waxing Crescent
Jul 15
First Quarter
Jul 22
Full
Jul 29
Last Quarter
Aug 6
New

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 48.0 °F 72% 30.15 in 10.0 mi SW 3.5 mph - N/A   Partly Cloudy
1:53 AM 55.9 °F 48.9 °F 77% 30.15 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 54.0 °F 48.9 °F 83% 30.17 in 10.0 mi South 3.5 mph - N/A   Clear
3:53 AM 54.0 °F 48.0 °F 80% 30.19 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:53 AM 53.1 °F 46.9 °F 80% 30.19 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:53 AM 53.1 °F 46.9 °F 80% 30.20 in 10.0 mi SSE 4.6 mph - N/A   Partly Cloudy
6:53 AM 54.0 °F 48.0 °F 80% 30.21 in 10.0 mi South 4.6 mph - N/A   Clear
7:53 AM 57.0 °F 48.9 °F 74% 30.22 in 10.0 mi SSW 3.5 mph - N/A   Partly Cloudy
8:53 AM 60.1 °F 48.9 °F 67% 30.23 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:53 AM 63.0 °F 50.0 °F 63% 30.24 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
10:53 AM 64.9 °F 48.9 °F 56% 30.23 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
11:53 AM 66.9 °F 48.9 °F 52% 30.22 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
12:53 PM 70.0 °F 48.9 °F 47% 30.21 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
1:53 PM 73.0 °F 48.9 °F 42% 30.20 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
2:53 PM 77.0 °F 44.1 °F 31% 30.19 in 10.0 mi North 12.7 mph 19.6 mph N/A   Clear
3:53 PM 77.0 °F 44.1 °F 31% 30.17 in 10.0 mi North 6.9 mph - N/A   Clear
4:53 PM 77.0 °F 44.1 °F 31% 30.16 in 10.0 mi NNW 11.5 mph - N/A   Partly Cloudy
5:53 PM 78.1 °F 42.1 °F 28% 30.15 in 10.0 mi NNW 10.4 mph - N/A   Partly Cloudy
6:53 PM 75.9 °F 43.0 °F 31% 30.15 in 10.0 mi NNW 9.2 mph - N/A   Clear
7:53 PM 73.0 °F 44.1 °F 35% 30.15 in 10.0 mi North 12.7 mph - N/A   Clear
8:53 PM 69.1 °F 46.9 °F 45% 30.15 in 10.0 mi North 10.4 mph - N/A   Clear
9:53 PM 66.0 °F 46.9 °F 50% 30.16 in 10.0 mi North 6.9 mph - N/A   Clear
10:53 PM 66.0 °F 46.9 °F 50% 30.15 in 10.0 mi North 11.5 mph - N/A   Clear
11:53 PM 64.9 °F 48.9 °F 56% 30.15 in 10.0 mi NE 9.2 mph - N/A   Clear