Seattle Boeing, WA

4:34 AM PDT on April 07, 2020 (GMT -0700)
Boeing Field-King County International

Weather History for KBFI - September, 2019

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Saturday, September 21, 2019

  Actual Average Record
Temperature  
Mean Temperature 62 °F -  
Max Temperature 68 °F 69 °F 88 °F (1952)
Min Temperature 57 °F 51 °F 39 °F (1955)
Degree Days  
Heating Degree Days 2    
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 72    
Maximum Humidity 87    
Minimum Humidity 59    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 4 mph (SSE)    
Max Wind Speed 7 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. 21, 2019 Rise Set
Actual Time 6:54 AM PDT 7:09 PM PDT
Civil Twilight 6:23 AM PDT 7:39 PM PDT
Nautical Twilight 5:47 AM PDT 8:16 PM PDT
Astronomical Twilight 5:09 AM PDT 8:53 PM PDT
Moon 11:23 PM PDT (9/21) 2:33 PM PDT (9/21)
Length of Visible Light 13h 16m
Length of Day
12h 14m
Waning Gibbous, 53% of the Moon is Illuminated
Sep 21
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 57.9 °F 54.0 °F 87% 30.15 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
1:53 AM 59.0 °F 54.0 °F 83% 30.16 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:18 AM 59.0 °F 54.0 °F 83% 30.16 in 10.0 mi SE 3.5 mph - N/A   Overcast
2:53 AM 59.0 °F 55.0 °F 87% 30.16 in 10.0 mi SSE 6.9 mph - N/A   Overcast
3:53 AM 59.0 °F 54.0 °F 83% 30.16 in 10.0 mi SE 6.9 mph - N/A   Overcast
4:53 AM 59.0 °F 54.0 °F 83% 30.15 in 10.0 mi South 4.6 mph - N/A   Overcast
12:53 PM 66.0 °F 54.0 °F 65% 30.12 in 10.0 mi North - - N/A   Unknown
1:53 PM 68.0 °F 53.1 °F 59% 30.10 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
2:53 PM 66.0 °F 53.1 °F 63% 30.09 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
3:53 PM 66.0 °F 52.0 °F 60% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:53 PM 66.0 °F 53.1 °F 63% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:53 PM 66.0 °F 54.0 °F 65% 30.04 in 10.0 mi Variable 3.5 mph - N/A   Overcast
6:53 PM 64.9 °F 54.0 °F 68% 30.03 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
7:53 PM 66.0 °F 54.0 °F 65% 30.02 in 10.0 mi Calm Calm - N/A   Overcast
8:53 PM 64.9 °F 55.0 °F 70% 30.01 in 10.0 mi ESE 3.5 mph - N/A   Overcast
9:53 PM 64.9 °F 55.0 °F 70% 29.99 in 10.0 mi SE 4.6 mph - N/A   Overcast
10:53 PM 64.9 °F 55.0 °F 70% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
11:53 PM 64.0 °F 55.9 °F 75% 29.97 in 10.0 mi South 3.5 mph - N/A   Mostly Cloudy