Weather History for Seattle, WA

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Tuesday, September 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 61 °F 61 °F  
Max Temperature 64 °F 70 °F 85 °F (1991)
Min Temperature 57 °F 52 °F 42 °F (1965)
Degree Days  
Heating Degree Days 4 4  
Month to date heating degree days 10 51  
Since 1 July heating degree days 25 136  
Cooling Degree Days 0 1  
Month to date cooling degree days 55 17  
Year to date cooling degree days 385 185  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 73    
Maximum Humidity 86    
Minimum Humidity 60    
Precipitation  
Precipitation T in 0.04 in 1.49 in (2010)
Month to date precipitation 2.17 0.73  
Year to date precipitation 21.57 21.32  
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 5 mph (East)    
Max Wind Speed 13 mph    
Max Gust Speed 17 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 17, 2013 Rise Set
Actual Time 6:49 AM PDT 7:16 PM PDT
Civil Twilight 6:18 AM PDT 7:47 PM PDT
Nautical Twilight 5:42 AM PDT 8:23 PM PDT
Astronomical Twilight 5:04 AM PDT 9:01 PM PDT
Moon 6:09 PM PDT (9/17) 4:45 AM PDT (9/17)
Length of Visible Light 13h 28m
Length of Day
12h 26m
Waxing Gibbous, 96% of the Moon is Illuminated
Sep 17
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 61.0 °F 48.9 °F 64% 29.94 in 10.0 mi NNE 6.9 mph - N/A   Overcast
1:53 AM 61.0 °F 48.0 °F 62% 29.94 in 10.0 mi NE 9.2 mph - N/A   Overcast
2:53 AM 61.0 °F 46.9 °F 60% 29.93 in 10.0 mi NE 8.1 mph - N/A   Overcast
3:53 AM 61.0 °F 48.0 °F 62% 29.92 in 10.0 mi NNE 6.9 mph - N/A   Overcast
4:53 AM 59.0 °F 50.0 °F 72% 29.92 in 10.0 mi NNE 3.5 mph - N/A   Overcast
5:53 AM 60.1 °F 48.9 °F 67% 29.91 in 10.0 mi NNE 6.9 mph - N/A   Overcast
6:53 AM 60.1 °F 50.0 °F 69% 29.92 in 10.0 mi North 5.8 mph - N/A   Overcast
7:53 AM 60.1 °F 50.0 °F 69% 29.91 in 10.0 mi NE 4.6 mph - N/A   Overcast
8:24 AM 57.2 °F 51.8 °F 82% 29.90 in 10.0 mi WNW 4.6 mph - N/A   Overcast
8:53 AM 59.0 °F 52.0 °F 78% 29.91 in 10.0 mi Calm Calm - N/A   Overcast
9:28 AM 60.8 °F 50.0 °F 68% 29.89 in 10.0 mi Variable 4.6 mph - N/A   Overcast
9:53 AM 61.0 °F 50.0 °F 67% 29.91 in 10.0 mi ENE 5.8 mph - N/A   Overcast
10:47 AM 60.8 °F 48.2 °F 63% 29.90 in 10.0 mi ENE 3.5 mph - N/A   Overcast
10:53 AM 61.0 °F 48.9 °F 64% 29.91 in 10.0 mi NE 3.5 mph - N/A   Overcast
11:53 AM 60.1 °F 52.0 °F 75% 29.91 in 10.0 mi West 4.6 mph - N/A   Overcast
12:16 PM 60.8 °F 51.8 °F 72% 29.90 in 10.0 mi WSW 4.6 mph - N/A   Overcast
12:53 PM 61.0 °F 51.1 °F 70% 29.92 in 10.0 mi SW 5.8 mph - N/A   Overcast
1:53 PM 61.0 °F 48.9 °F 64% 29.92 in 10.0 mi East 6.9 mph - N/A   Overcast
2:53 PM 63.0 °F 51.1 °F 65% 29.92 in 10.0 mi SSE 3.5 mph - N/A   Overcast
3:53 PM 63.0 °F 48.9 °F 60% 29.92 in 10.0 mi Calm Calm - N/A   Overcast
4:53 PM 63.0 °F 48.9 °F 60% 29.91 in 10.0 mi SSE 4.6 mph - N/A   Overcast
5:53 PM 62.1 °F 48.9 °F 62% 29.91 in 10.0 mi SSE 6.9 mph - N/A   Overcast
6:53 PM 62.1 °F 48.9 °F 62% 29.92 in 10.0 mi SSE 5.8 mph - 0.00 in   Mostly Cloudy
7:53 PM 61.0 °F 48.9 °F 64% 29.94 in 10.0 mi SE 4.6 mph - N/A   Mostly Cloudy
8:53 PM 62.1 °F 48.0 °F 60% 29.95 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
9:53 PM 60.1 °F 50.0 °F 69% 29.96 in 10.0 mi SSE 5.8 mph - N/A   Overcast
10:53 PM 59.0 °F 52.0 °F 78% 29.96 in 10.0 mi SSE 6.9 mph - N/A   Overcast
11:45 PM 57.2 °F 53.6 °F 88% 29.95 in 10.0 mi SSE 4.6 mph - N/A   Overcast
11:53 PM 57.9 °F 53.1 °F 84% 29.97 in 10.0 mi SSE 5.8 mph - N/A   Overcast