Seattle Boeing, WA

1:43 PM PDT on March 31, 2020 (GMT -0700)
Boeing Field-King County International

Weather History for KBFI - September, 2019

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Tuesday, September 17, 2019

  Actual Average Record
Temperature  
Mean Temperature 58 °F -  
Max Temperature 62 °F 68 °F 85 °F (1991)
Min Temperature 55 °F 51 °F 42 °F (1965)
Degree Days  
Heating Degree Days 6    
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 53 °F    
Average Humidity 83    
Maximum Humidity 90    
Minimum Humidity 75    
Precipitation  
Precipitation 0.11 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.75 in    
Wind  
Wind Speed 8 mph (SE)    
Max Wind Speed 12 mph    
Max Gust Speed -    
Visibility 9 miles    
Events Rain    
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. 17, 2019 Rise Set
Actual Time 6:49 AM PDT 7:17 PM PDT
Civil Twilight 6:18 AM PDT 7:48 PM PDT
Nautical Twilight 5:41 AM PDT 8:24 PM PDT
Astronomical Twilight 5:03 AM PDT 9:02 PM PDT
Moon 9:10 PM PDT (9/17) 10:10 AM PDT (9/17)
Length of Visible Light 13h 30m
Length of Day
12h 28m
Waning Gibbous, 88% of the Moon is Illuminated
Sep 17
Waning Gibbous
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter
Oct 13
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 52.0 °F 83% 29.84 in 10.0 mi SE 9.2 mph - N/A   Overcast
1:53 AM 57.0 °F 51.1 °F 81% 29.84 in 10.0 mi SE 11.5 mph - N/A   Clear
2:53 AM 55.9 °F 51.1 °F 84% 29.83 in 10.0 mi SE 9.2 mph - N/A   Clear
3:53 AM 55.9 °F 51.1 °F 84% 29.81 in 10.0 mi SSE 9.2 mph - N/A   Mostly Cloudy
4:53 AM 57.0 °F 50.0 °F 77% 29.78 in 10.0 mi SSE 10.4 mph - N/A   Overcast
5:53 AM 57.0 °F 50.0 °F 77% 29.76 in 10.0 mi SSE 9.2 mph - N/A   Scattered Clouds
6:53 AM 57.9 °F 50.0 °F 75% 29.75 in 10.0 mi ESE 8.1 mph - N/A   Overcast
7:53 AM 55.9 °F 51.1 °F 84% 29.75 in 10.0 mi SE 9.2 mph - 0.00 in Rain Light Rain
8:53 AM 55.9 °F 52.0 °F 87% 29.73 in 10.0 mi SE 11.5 mph - 0.02 in Rain Light Rain
9:53 AM 57.0 °F 52.0 °F 83% 29.73 in 6.0 mi SE 5.8 mph - 0.01 in Rain Light Rain
10:17 AM 57.0 °F 53.1 °F 87% 29.74 in 4.0 mi Calm Calm - 0.05 in Rain Rain
10:34 AM 55.9 °F 53.1 °F 90% 29.74 in 4.0 mi SSE 3.5 mph - 0.05 in Rain Light Rain
10:53 AM 57.0 °F 53.1 °F 87% 29.73 in 7.0 mi SE 3.5 mph - 0.05 in   Overcast
11:53 AM 61.0 °F 54.0 °F 78% 29.73 in 10.0 mi SE 8.1 mph - N/A   Overcast
12:53 PM 61.0 °F 54.0 °F 78% 29.73 in 10.0 mi SSE 8.1 mph - 0.00 in   Overcast
1:53 PM 60.1 °F 54.0 °F 80% 29.73 in 10.0 mi South 6.9 mph - 0.00 in   Overcast
2:53 PM 60.1 °F 55.9 °F 86% 29.73 in 3.0 mi Variable 4.6 mph - 0.00 in Rain Light Rain
3:53 PM 62.1 °F 55.9 °F 80% 29.72 in 10.0 mi SSE 5.8 mph - 0.00 in Rain Light Rain
4:53 PM 62.1 °F 55.0 °F 78% 29.73 in 10.0 mi Calm Calm - 0.00 in Rain Light Rain
5:53 PM 62.1 °F 55.0 °F 78% 29.73 in 10.0 mi West 3.5 mph - 0.00 in Rain Light Rain
6:53 PM 59.0 °F 54.0 °F 83% 29.73 in 10.0 mi SE 9.2 mph - 0.00 in   Mostly Cloudy
7:53 PM 59.0 °F 55.0 °F 87% 29.74 in 10.0 mi ESE 5.8 mph - 0.01 in Rain Light Rain
8:53 PM 57.9 °F 54.0 °F 87% 29.76 in 10.0 mi SSE 6.9 mph - 0.02 in   Overcast
9:53 PM 57.9 °F 55.0 °F 90% 29.75 in 10.0 mi East 5.8 mph - 0.00 in   Overcast
10:53 PM 57.9 °F 53.1 °F 84% 29.75 in 10.0 mi SE 5.8 mph - N/A   Scattered Clouds
11:53 PM 57.0 °F 53.1 °F 87% 29.75 in 10.0 mi East 3.5 mph - N/A   Overcast