Seattle, WA

5:00 AM PDT on July 28, 2016 (GMT -0700)
Boeing Field-King County International

Weather History for KBFI - September, 2011

Change the Weather History Date:

Sunday, September 18, 2011

  Actual Average Record
Temperature  
Mean Temperature 60 °F -  
Max Temperature 68 °F 68 °F 85 °F (1991)
Min Temperature 53 °F 51 °F 41 °F (1948)
Degree Days  
Heating Degree Days 4    
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 90    
Maximum Humidity 100    
Minimum Humidity 70    
Precipitation  
Precipitation 0.13 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 8 mph (SSE)    
Max Wind Speed 13 mph    
Max Gust Speed 20 mph    
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

Search for Another Location

Airport or City:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Sep. 18, 2011 Rise Set
Actual Time 6:50 AM PDT 7:15 PM PDT
Civil Twilight 6:19 AM PDT 7:46 PM PDT
Nautical Twilight 5:43 AM PDT 8:22 PM PDT
Astronomical Twilight 5:05 AM PDT 9:00 PM PDT
Moon 10:05 PM PDT (9/18) 1:21 PM PDT (9/18)
Length of Visible Light 13h 26m
Length of Day
12h 25m
Waning Gibbous, 67% of the Moon is Illuminated
Sep 18
Waning Gibbous
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter
Oct 11
Full

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:05 AM 53.6 °F 51.8 °F 94% 30.07 in 10.0 mi SE 10.4 mph - 0.00 in Rain Light Rain
12:53 AM 53.1 °F 51.1 °F 93% 30.05 in 10.0 mi SE 10.4 mph - 0.00 in   Overcast
1:00 AM 53.6 °F 51.8 °F 94% 30.05 in 10.0 mi SE 6.9 mph - N/A   Overcast
1:53 AM 53.6 °F 51.8 °F 94% 30.05 in 10.0 mi ESE 4.6 mph - N/A   Overcast
2:53 AM 54.0 °F 52.0 °F 93% 30.06 in 2.5 mi Calm Calm - 0.00 in Rain Light Rain
3:41 AM 53.6 °F 53.6 °F 100% 30.05 in 5.0 mi SE 5.8 mph - 0.02 in   Overcast
3:53 AM 54.0 °F 54.0 °F 100% 30.04 in 10.0 mi SE 5.8 mph - 0.02 in   Overcast
4:16 AM 53.6 °F 53.6 °F 100% 30.03 in 10.0 mi SE 6.9 mph - N/A   Overcast
4:53 AM 55.0 °F 54.0 °F 96% 30.03 in 10.0 mi SSE 4.6 mph - N/A   Overcast
5:53 AM 55.9 °F 55.0 °F 97% 30.05 in 7.0 mi ESE 4.6 mph - 0.05 in Rain Rain
6:08 AM 55.4 °F 55.4 °F 100% 30.05 in 8.0 mi SE 5.8 mph - 0.02 in Rain Light Rain
6:34 AM 55.4 °F 55.4 °F 100% 30.04 in 6.0 mi SE 8.1 mph - 0.05 in Rain Light Rain
6:53 AM 55.9 °F 55.0 °F 97% 30.04 in 9.0 mi SSE 11.5 mph - 0.06 in   Overcast
7:53 AM 57.9 °F 57.0 °F 97% 30.06 in 4.0 mi SSE 9.2 mph - N/A   Overcast
8:03 AM 57.2 °F 55.4 °F 94% 30.06 in 10.0 mi SSE 10.4 mph - N/A   Overcast
8:53 AM 59.0 °F 57.0 °F 93% 30.06 in 10.0 mi SE 12.7 mph - N/A   Mostly Cloudy
9:03 AM 59.0 °F 57.2 °F 94% 30.06 in 10.0 mi SSE 10.4 mph - N/A   Mostly Cloudy
9:53 AM 60.1 °F 57.9 °F 93% 30.08 in 10.0 mi SSE 9.2 mph - N/A   Mostly Cloudy
10:53 AM 62.1 °F 59.0 °F 90% 30.10 in 10.0 mi SSE 10.4 mph - N/A   Mostly Cloudy
11:00 AM 62.6 °F 59.0 °F 88% 30.10 in 10.0 mi SSE 11.5 mph - N/A   Mostly Cloudy
11:07 AM 62.6 °F 59.0 °F 88% 30.10 in 10.0 mi SSE 11.5 mph - N/A   Mostly Cloudy
11:53 AM 64.4 °F 59.0 °F 83% 30.11 in 10.0 mi South 10.4 mph 16.1 mph N/A   Mostly Cloudy
12:53 PM 64.9 °F 57.9 °F 78% 30.12 in 10.0 mi South 12.7 mph 16.1 mph N/A   Mostly Cloudy
1:53 PM 66.0 °F 59.0 °F 78% 30.13 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
2:53 PM 68.0 °F 57.9 °F 70% 30.10 in 10.0 mi South 11.5 mph 19.6 mph N/A   Mostly Cloudy
3:53 PM 66.0 °F 59.0 °F 78% 30.11 in 10.0 mi South 9.2 mph - N/A   Overcast
4:48 PM 64.4 °F 59.0 °F 83% 30.11 in 10.0 mi SW 5.8 mph - 0.00 in   Overcast
4:53 PM 64.9 °F 59.0 °F 81% 30.11 in 10.0 mi SSW 8.1 mph - 0.00 in   Overcast
5:00 PM 64.4 °F 59.0 °F 83% 30.11 in 10.0 mi SSW 5.8 mph - N/A   Overcast
5:53 PM 63.0 °F 59.0 °F 87% 30.08 in 10.0 mi SSE 9.2 mph - N/A   Overcast
6:53 PM 63.0 °F 57.9 °F 84% 30.07 in 8.0 mi Calm Calm - 0.00 in Rain Light Rain
7:53 PM 62.6 °F 59.0 °F 88% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
8:53 PM 60.8 °F 57.2 °F 88% 30.08 in 10.0 mi SW 4.6 mph - N/A   Overcast
9:53 PM 61.0 °F 57.9 °F 90% 30.09 in 10.0 mi WSW 4.6 mph - N/A   Overcast
10:53 PM 61.0 °F 55.9 °F 83% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
11:53 PM 60.1 °F 55.0 °F 83% 30.10 in 10.0 mi Calm Calm - N/A   Overcast