Seattle Boeing, WA

6:42 PM PDT on April 23, 2017 (GMT -0700)
Boeing Field-King County International

Weather History for KBFI - April, 2017

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Friday, April 21, 2017

  Actual Average Record
Temperature  
Mean Temperature 54 °F -  
Max Temperature 66 °F 58 °F 76 °F (1982)
Min Temperature 44 °F 42 °F 29 °F (1951)
Degree Days  
Heating Degree Days 11    
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 42 °F    
Average Humidity 64    
Maximum Humidity 96    
Minimum Humidity 33    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.26 in    
Wind  
Wind Speed 5 mph (NE)    
Max Wind Speed 10 mph    
Max Gust Speed 17 mph    
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

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Date:

Astronomy

Apr. 21, 2017 Rise Set
Actual Time 6:08 AM PDT 8:07 PM PDT
Civil Twilight 5:35 AM PDT 8:40 PM PDT
Nautical Twilight 4:55 AM PDT 9:21 PM PDT
Astronomical Twilight 4:10 AM PDT 10:07 PM PDT
Moon 3:57 AM PDT (4/21) 2:30 PM PDT (4/21)
Length of Visible Light 15h 05m
Length of Day
13h 58m
Waning Crescent, 27% of the Moon is Illuminated
Apr 21
Waning Crescent
Apr 26
New
May 2
First Quarter
May 10
Full
May 18
Last Quarter

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 48.0 °F - 43.0 °F 83% 30.43 in 10.0 mi SSE 4.6 mph - N/A   Partly Cloudy
1:53 AM 48.0 °F - 44.1 °F 86% 30.43 in 10.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
2:53 AM 46.0 °F 44.8 °F 43.0 °F 89% 30.42 in 10.0 mi SE 3.5 mph - N/A   Clear
3:53 AM 46.0 °F 44.8 °F 44.1 °F 93% 30.42 in 10.0 mi SE 3.5 mph - N/A   Clear
4:53 AM 44.1 °F - 43.0 °F 96% 30.41 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 44.1 °F - 43.0 °F 96% 30.41 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:53 AM 44.1 °F - 43.0 °F 96% 30.42 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:53 AM 48.0 °F - 44.1 °F 86% 30.42 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:53 AM 51.1 °F - 44.1 °F 77% 30.39 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:53 AM 54.0 °F - 44.1 °F 69% 30.38 in 10.0 mi ENE 3.5 mph - N/A   Partly Cloudy
10:53 AM 55.9 °F - 39.0 °F 53% 30.36 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
11:53 AM 59.0 °F - 44.1 °F 58% 30.33 in 10.0 mi NNW 8.1 mph - N/A   Partly Cloudy
12:53 PM 59.0 °F - 45.0 °F 60% 30.30 in 10.0 mi NW 8.1 mph - N/A   Clear
1:53 PM 59.0 °F - 43.0 °F 55% 30.26 in 10.0 mi NW 9.2 mph 17.3 mph N/A   Clear
2:53 PM 61.0 °F - 43.0 °F 52% 30.22 in 10.0 mi WNW 10.4 mph - N/A   Clear
3:53 PM 63.0 °F - 44.1 °F 50% 30.18 in 10.0 mi NW 6.9 mph - N/A   Clear
4:53 PM 64.9 °F - 43.0 °F 45% 30.14 in 10.0 mi NW 9.2 mph - N/A   Clear
5:53 PM 64.0 °F - 45.0 °F 50% 30.11 in 10.0 mi NW 9.2 mph - N/A   Clear
6:53 PM 62.1 °F - 46.0 °F 56% 30.08 in 10.0 mi NW 6.9 mph - N/A   Scattered Clouds
7:53 PM 62.1 °F - 45.0 °F 53% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:53 PM 64.9 °F - 35.1 °F 33% 30.06 in 10.0 mi East 8.1 mph - N/A   Mostly Cloudy
9:53 PM 63.0 °F - 35.1 °F 35% 30.04 in 10.0 mi East 6.9 mph - N/A   Clear
10:53 PM 62.1 °F - 35.1 °F 37% 30.02 in 10.0 mi SE 6.9 mph - N/A   Clear
11:53 PM 62.1 °F - 34.0 °F 35% 29.98 in 10.0 mi ESE 9.2 mph - N/A   Clear