Weather History for KSEA - September, 2013

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Thursday, September 26, 2013

  Actual Average Record
Temperature  
Mean Temperature 54 °F 59 °F  
Max Temperature 63 °F 67 °F 78 °F (1967)
Min Temperature 45 °F 50 °F 39 °F (1972)
Degree Days  
Heating Degree Days 11 7  
Month to date heating degree days 57 102  
Since 1 July heating degree days 72 187  
Cooling Degree Days 0 0  
Month to date cooling degree days 55 19  
Year to date cooling degree days 385 187  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 46 °F    
Average Humidity 74    
Maximum Humidity 93    
Minimum Humidity 55    
Precipitation  
Precipitation 0.00 in 0.07 in 1.51 in (1948)
Month to date precipitation 3.03 1.24  
Year to date precipitation 22.43 21.83  
Sea Level Pressure  
Sea Level Pressure 30.12 in    
Wind  
Wind Speed 5 mph (South)    
Max Wind Speed 10 mph    
Max Gust Speed 14 mph    
Visibility 6 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 26, 2013 Rise Set
Actual Time 7:01 AM PDT 6:58 PM PDT
Civil Twilight 6:31 AM PDT 7:28 PM PDT
Nautical Twilight 5:55 AM PDT 8:04 PM PDT
Astronomical Twilight 5:18 AM PDT 8:41 PM PDT
Moon 11:40 PM PDT 2:18 PM PDT
Length of Visible Light 12h 57m
Length of Day
11h 56m
Waning Gibbous, 53% of the Moon is Illuminated
Sep 26
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

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 50.0 °F - 46.0 °F 86% 30.06 in 10.0 mi SE 4.6 mph - N/A   Partly Cloudy
1:53 AM 48.9 °F - 45.0 °F 86% 30.06 in 10.0 mi ESE 8.1 mph - N/A   Partly Cloudy
2:53 AM 48.0 °F - 44.1 °F 86% 30.07 in 10.0 mi SE 3.5 mph - N/A   Clear
3:53 AM 48.0 °F - 43.0 °F 83% 30.07 in 10.0 mi SE 5.8 mph - N/A   Clear
4:53 AM 48.0 °F - 43.0 °F 83% 30.08 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:53 AM 46.9 °F - 42.1 °F 83% 30.09 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:12 AM 46.4 °F - 44.6 °F 93% 30.07 in 1.5 mi Calm Calm - N/A   Partly Cloudy
6:35 AM 46.4 °F 45.2 °F 42.8 °F 87% 30.08 in 3.0 mi SSE 3.5 mph - N/A Fog Patches of Fog
6:53 AM 46.0 °F 43.9 °F 43.0 °F 89% 30.10 in 5.0 mi ESE 4.6 mph - N/A Fog Patches of Fog
7:31 AM 46.4 °F 43.5 °F 42.8 °F 87% 30.09 in 0.5 mi SSE 5.8 mph - N/A Fog Fog
7:53 AM 46.0 °F 43.9 °F 44.1 °F 93% 30.12 in 0.8 mi SSE 4.6 mph - N/A   Mostly Cloudy
8:13 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.09 in 3.0 mi SSE 3.5 mph - N/A Fog Patches of Fog
8:33 AM 46.4 °F - 44.6 °F 93% 30.10 in 3.0 mi Calm Calm - N/A Fog Patches of Fog
8:53 AM 48.0 °F - 46.0 °F 93% 30.13 in 3.0 mi SSW 3.5 mph - N/A Fog Patches of Fog
9:03 AM 48.2 °F - 46.4 °F 93% 30.11 in 1.0 mi South 3.5 mph - N/A   Overcast
9:09 AM 48.2 °F - 46.4 °F 93% 30.11 in 0.5 mi SSE 4.6 mph - N/A Fog Fog
9:22 AM 48.2 °F - 46.4 °F 93% 30.11 in 0.5 mi SSW 5.8 mph - N/A Fog Fog
9:30 AM 48.2 °F - 46.4 °F 93% 30.12 in 0.5 mi South 4.6 mph - N/A Fog Fog
9:53 AM 48.9 °F - 46.9 °F 93% 30.14 in 0.5 mi Calm Calm - N/A Fog Fog
10:34 AM 50.0 °F - 48.2 °F 94% 30.12 in 1.0 mi SSW 3.5 mph - N/A   Mostly Cloudy
10:40 AM 50.0 °F - 48.2 °F 94% 30.12 in 2.0 mi SW 4.6 mph - N/A   Mostly Cloudy
10:53 AM 51.1 °F - 48.0 °F 89% 30.15 in 2.0 mi WSW 5.8 mph - N/A   Overcast
10:59 AM 51.8 °F - 48.2 °F 88% 30.12 in 0.1 mi WSW 4.6 mph - N/A   Overcast
11:45 AM 51.8 °F - 48.2 °F 88% 30.13 in 1.2 mi WNW 5.8 mph - N/A   Overcast
11:53 AM 52.0 °F - 48.0 °F 86% 30.16 in 1.2 mi WNW 4.6 mph - N/A   Overcast
12:12 PM 53.6 °F - 48.2 °F 82% 30.13 in 5.0 mi Calm Calm - N/A   Haze
12:30 PM 55.4 °F - 48.2 °F 77% 30.13 in 6.0 mi NW 5.8 mph - N/A   Haze
12:53 PM 57.0 °F - 48.0 °F 72% 30.15 in 7.0 mi NW 4.6 mph - N/A   Scattered Clouds
1:53 PM 60.1 °F - 46.9 °F 62% 30.16 in 10.0 mi NW 6.9 mph - N/A   Partly Cloudy
2:53 PM 60.1 °F - 46.9 °F 62% 30.16 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
3:53 PM 61.0 °F - 45.0 °F 56% 30.15 in 10.0 mi NW 6.9 mph - N/A   Scattered Clouds
4:53 PM 62.1 °F - 46.0 °F 56% 30.14 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
5:53 PM 61.0 °F - 46.9 °F 60% 30.14 in 10.0 mi SSW 4.6 mph - N/A   Scattered Clouds
6:53 PM 57.9 °F - 45.0 °F 62% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:53 PM 57.9 °F - 45.0 °F 62% 30.16 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:53 PM 55.9 °F - 45.0 °F 67% 30.16 in 10.0 mi SE 6.9 mph - N/A   Partly Cloudy
9:53 PM 55.9 °F - 45.0 °F 67% 30.17 in 10.0 mi ESE 8.1 mph - N/A   Mostly Cloudy
10:53 PM 54.0 °F - 46.0 °F 75% 30.17 in 10.0 mi SE 8.1 mph - N/A   Mostly Cloudy
11:46 PM 51.8 °F - 44.6 °F 76% 30.14 in 10.0 mi SSE 6.9 mph - N/A   Partly Cloudy
11:53 PM 53.1 °F - 45.0 °F 74% 30.16 in 10.0 mi SSE 8.1 mph - N/A   Clear