Seattle, WA

12:38 AM PDT on July 25, 2017 (GMT -0700)
Seattle-Tacoma International

Weather History for KSEA - September, 2013

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Thursday, September 19, 2013

  Actual Average Record
Temperature  
Mean Temperature 64 °F 61 °F  
Max Temperature 78 °F 70 °F 82 °F (1999)
Min Temperature 50 °F 52 °F 40 °F (1957)
Degree Days  
Heating Degree Days 1 5  
Month to date heating degree days 13 61  
Since 1 July heating degree days 28 146  
Cooling Degree Days 0 1  
Month to date cooling degree days 55 19  
Year to date cooling degree days 385 187  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 49 °F    
Average Humidity 56    
Maximum Humidity 77    
Minimum Humidity 35    
Precipitation  
Precipitation 0.00 in 0.05 in 0.79 in (1959)
Month to date precipitation 2.17 0.83  
Year to date precipitation 21.57 21.42  
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 3 mph (West)    
Max Wind Speed 9 mph    
Max Gust Speed 13 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Sep. 19, 2013 Rise Set
Actual Time 6:52 AM PDT 7:12 PM PDT
Civil Twilight 6:21 AM PDT 7:43 PM PDT
Nautical Twilight 5:45 AM PDT 8:19 PM PDT
Astronomical Twilight 5:07 AM PDT 8:56 PM PDT
Moon 7:07 PM PDT (9/19) 7:11 AM PDT (9/19)
Length of Visible Light 13h 21m
Length of Day
12h 19m
Full, 100% of the Moon is Illuminated
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

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% 30.07 in 10.0 mi SE 3.5 mph - N/A   Clear
1:53 AM 55.9 °F 46.9 °F 72% 30.06 in 10.0 mi ESE 4.6 mph - N/A   Clear
2:53 AM 54.0 °F 46.9 °F 77% 30.05 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
3:53 AM 53.1 °F 46.0 °F 77% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:53 AM 55.0 °F 45.0 °F 69% 30.02 in 10.0 mi East 5.8 mph - N/A   Partly Cloudy
5:53 AM 53.1 °F 44.1 °F 71% 30.01 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 52.0 °F 44.1 °F 74% 30.02 in 10.0 mi NNW 3.5 mph - N/A   Partly Cloudy
7:53 AM 55.0 °F 46.0 °F 72% 30.00 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:53 AM 59.0 °F 46.0 °F 62% 30.00 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
9:53 AM 62.1 °F 48.9 °F 62% 29.99 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
10:53 AM 64.9 °F 52.0 °F 63% 29.97 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
11:53 AM 66.0 °F 51.1 °F 59% 29.96 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:53 PM 70.0 °F 52.0 °F 53% 29.93 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
1:53 PM 73.0 °F 52.0 °F 48% 29.91 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
2:53 PM 75.0 °F 51.1 °F 43% 29.88 in 10.0 mi NW 6.9 mph - N/A   Scattered Clouds
3:53 PM 77.0 °F 50.0 °F 39% 29.86 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds
4:53 PM 78.1 °F 48.9 °F 36% 29.85 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
5:53 PM 77.0 °F 48.9 °F 37% 29.83 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
6:53 PM 73.0 °F 51.1 °F 46% 29.83 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:53 PM 71.1 °F 50.0 °F 47% 29.82 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:53 PM 69.1 °F 48.9 °F 49% 29.82 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:53 PM 68.0 °F 48.9 °F 50% 29.81 in 10.0 mi Calm Calm - N/A   Clear
10:53 PM 66.0 °F 48.9 °F 54% 29.81 in 10.0 mi SE 5.8 mph - N/A   Clear
11:53 PM 60.1 °F 50.0 °F 69% 29.81 in 10.0 mi South 5.8 mph - N/A   Clear