Seattle Boeing, WA

11:18 AM PDT on May 29, 2020 (GMT -0700)
Boeing Field-King County International

Weather History for KBFI - September, 2019

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Wednesday, September 4, 2019

  Actual Average Record
Temperature  
Mean Temperature 68 °F -  
Max Temperature 75 °F 73 °F 87 °F (1963)
Min Temperature 61 °F 54 °F 42 °F (1952)
Cooling Degree Days 3    
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 55 °F    
Average Humidity 68    
Maximum Humidity 81    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 3 mph (West)    
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. 04, 2019 Rise Set
Actual Time 6:31 AM PDT 7:43 PM PDT
Civil Twilight 6:00 AM PDT 8:15 PM PDT
Nautical Twilight 5:21 AM PDT 8:53 PM PDT
Astronomical Twilight 4:41 AM PDT 9:33 PM PDT
Moon 1:04 PM PDT (9/4) 10:55 PM PDT (9/4)
Length of Visible Light 14h 15m
Length of Day
13h 12m
Waxing Crescent, 36% of the Moon is Illuminated
Sep 4
Waxing Crescent
Sep 5
First Quarter
Sep 13
Full
Sep 21
Last Quarter
Sep 28
New

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:48 AM 64.4 °F 55.4 °F 73% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:53 AM 64.0 °F 55.9 °F 75% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:53 AM 63.0 °F 55.9 °F 78% 30.06 in 10.0 mi SSW 5.8 mph - N/A   Overcast
2:53 AM 61.0 °F 55.0 °F 81% 30.07 in 10.0 mi South 5.8 mph - N/A   Scattered Clouds
3:26 AM 61.0 °F 55.0 °F 81% 30.07 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
3:53 AM 61.0 °F 55.0 °F 81% 30.07 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
4:05 AM 61.0 °F 55.0 °F 81% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:53 AM 62.1 °F 55.0 °F 78% 30.07 in 10.0 mi Calm Calm - N/A   Overcast
5:53 AM 62.1 °F 55.0 °F 78% 30.07 in 10.0 mi South 3.5 mph - N/A   Overcast
6:53 AM 62.1 °F 55.0 °F 78% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
7:53 AM 64.0 °F 55.0 °F 73% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
8:53 AM 64.0 °F 55.0 °F 73% 30.10 in 10.0 mi WSW 3.5 mph - N/A   Overcast
9:53 AM 64.9 °F 55.0 °F 70% 30.11 in 10.0 mi WNW 3.5 mph - N/A   Overcast
10:53 AM 66.0 °F 55.0 °F 68% 30.11 in 10.0 mi Variable 4.6 mph - N/A   Overcast
11:53 AM 66.9 °F 55.0 °F 66% 30.10 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
12:53 PM 71.1 °F 55.0 °F 57% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:53 PM 72.0 °F 55.0 °F 55% 30.06 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
2:53 PM 72.0 °F 55.0 °F 55% 30.05 in 10.0 mi Variable 6.9 mph - N/A   Partly Cloudy
3:53 PM 73.9 °F 55.0 °F 52% 30.03 in 10.0 mi Variable 4.6 mph - N/A   Clear
4:53 PM 73.9 °F 54.0 °F 50% 30.01 in 10.0 mi NW 6.9 mph - N/A   Clear
5:53 PM 75.0 °F 54.0 °F 48% 30.00 in 10.0 mi NW 5.8 mph - N/A   Clear
6:53 PM 73.0 °F 55.0 °F 53% 30.00 in 10.0 mi NW 6.9 mph - N/A   Clear
7:53 PM 69.1 °F 55.0 °F 61% 30.00 in 10.0 mi NW 5.8 mph - N/A   Clear
8:53 PM 68.0 °F 54.0 °F 61% 30.01 in 10.0 mi Variable 3.5 mph - N/A   Clear
9:53 PM 66.0 °F 55.0 °F 68% 30.01 in 10.0 mi NW 4.6 mph - N/A   Clear
10:53 PM 64.0 °F 55.0 °F 73% 30.02 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 64.9 °F 55.0 °F 70% 30.02 in 10.0 mi Variable 3.5 mph - N/A   Clear