Seattle, WA

9:19 AM PDT on October 20, 2019 (GMT -0700)
Seattle-Tacoma International

Weather Almanac for KSEA - September, 2019

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Wednesday, September 18, 2019

  Average Record
Temperature  
Mean Temperature 61 °F  
Max Temperature 70 °F 85 °F (1991)
Min Temperature 52 °F 38 °F (1947)
Degree Days  
Heating Degree Days 5  
Month to date heating degree days   56  
Since 1 July heating degree days   141  
Cooling Degree Days 1  
Month to date cooling degree days   18  
Year to date cooling degree days   186  
Moisture  
Dew Point    
Average Humidity    
Maximum Humidity    
Minimum Humidity    
Precipitation  
Precipitation 0.05 in 0.78 in (2010)
Month to date precipitation   0.78  
Year to date precipitation   21.37  
Wind  
Wind Speed    
Max Wind Speed    
Max Gust Speed    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 18, 2019 Rise Set
Actual Time 6:50 AM PDT 7:15 PM PDT
Civil Twilight 6:19 AM PDT 7:46 PM PDT
Nautical Twilight 5:43 AM PDT 8:22 PM PDT
Astronomical Twilight 5:05 AM PDT 9:00 PM PDT
Moon 9:35 PM PDT (9/18) 11:14 AM PDT (9/18)
Length of Visible Light 13h 26m
Length of Day
12h 24m
Waning Gibbous, 82% of the Moon is Illuminated
Sep 18
Waning Gibbous
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter
Oct 13
Full

No daily or hourly history data available