Seattle Boeing, WA

8:09 PM PDT on April 07, 2020 (GMT -0700)
Boeing Field-King County International

Weather History for KBFI - September, 2019

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Monday, September 30, 2019

  Actual Average Record
Temperature  
Mean Temperature 50 °F -  
Max Temperature 60 °F 67 °F 82 °F (1992)
Min Temperature 41 °F 49 °F 36 °F (1950)
Degree Days  
Heating Degree Days 15    
Moisture  
Dew Point 34 °F    
Average Humidity 59    
Maximum Humidity 86    
Minimum Humidity 32    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 2 mph (NW)    
Max Wind Speed 9 mph    
Max Gust Speed -    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Sep. 30, 2019 Rise Set
Actual Time 7:06 AM PDT 6:50 PM PDT
Civil Twilight 6:36 AM PDT 7:21 PM PDT
Nautical Twilight 6:00 AM PDT 7:57 PM PDT
Astronomical Twilight 5:23 AM PDT 8:33 PM PDT
Moon 9:24 AM PDT (9/30) 8:20 PM PDT (9/30)
Length of Visible Light 12h 45m
Length of Day
11h 44m
Waxing Crescent, 6% of the Moon is Illuminated
Sep 30
Waxing Crescent
Oct 5
First Quarter
Oct 13
Full
Oct 21
Last Quarter
Oct 27
New

Hourly Weather History & Observations

Time (PDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 44.1 °F - 37.0 °F 76% 30.03 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 41.0 °F 39.0 °F 36.0 °F 82% 30.04 in 10.0 mi SSE 3.5 mph - N/A   Clear
2:53 AM 42.1 °F - 37.0 °F 82% 30.04 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 42.1 °F - 37.0 °F 82% 30.04 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 42.1 °F - 36.0 °F 79% 30.04 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 41.0 °F - 37.0 °F 86% 30.06 in 10.0 mi Calm Calm - N/A   Unknown
6:53 AM 42.1 °F - 37.0 °F 82% 30.08 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 42.1 °F - 37.9 °F 85% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:53 AM 46.9 °F - 37.9 °F 71% 30.10 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 51.1 °F - 36.0 °F 56% 30.11 in 10.0 mi ENE 4.6 mph - N/A   Partly Cloudy
10:53 AM 54.0 °F - 35.1 °F 49% 30.13 in 10.0 mi Variable 4.6 mph - N/A   Partly Cloudy
11:53 AM 57.0 °F - 34.0 °F 42% 30.13 in 10.0 mi Variable 4.6 mph - N/A   Partly Cloudy
1:53 PM 57.9 °F - 28.9 °F 33% 30.12 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
2:53 PM 59.0 °F - 30.0 °F 33% 30.11 in 10.0 mi Variable 6.9 mph - N/A   Partly Cloudy
3:53 PM 59.0 °F - 28.9 °F 32% 30.11 in 10.0 mi WNW 9.2 mph - N/A   Scattered Clouds
4:53 PM 59.0 °F - 30.0 °F 33% 30.11 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
5:53 PM 57.9 °F - 30.9 °F 36% 30.12 in 10.0 mi NW 8.1 mph - N/A   Partly Cloudy
6:53 PM 57.0 °F - 30.0 °F 36% 30.13 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
7:53 PM 55.0 °F - 30.9 °F 40% 30.14 in 10.0 mi Calm Calm - N/A   Clear
8:53 PM 52.0 °F - 30.9 °F 45% 30.16 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 50.0 °F - 34.0 °F 54% 30.16 in 10.0 mi Calm Calm - N/A   Clear
10:53 PM 48.0 °F - 36.0 °F 63% 30.17 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 45.0 °F - 36.0 °F 71% 30.17 in 10.0 mi Calm Calm - N/A   Clear