Weather History for KSEA - May, 2013

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Wednesday, May 22, 2013

  Actual Average Record
Temperature  
Mean Temperature 49 °F 57 °F  
Max Temperature 52 °F 66 °F 86 °F (1969)
Min Temperature 45 °F 49 °F 37 °F (1960)
Degree Days  
Heating Degree Days 16 8  
Month to date heating degree days 123 218  
Since 1 July heating degree days 4203 4486  
Cooling Degree Days 0 0  
Month to date cooling degree days 13 0  
Year to date cooling degree days 13 0  
Moisture  
Dew Point 44 °F    
Average Humidity 84    
Maximum Humidity 93    
Minimum Humidity 74    
Precipitation  
Precipitation 0.54 in 0.06 in 0.67 in (1984)
Month to date precipitation 1.53 1.37  
Year to date precipitation 15.90 16.87  
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 7 mph (SSW)    
Max Wind Speed 15 mph    
Max Gust Speed 21 mph    
Visibility 8 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 22, 2013 Rise Set
Actual Time 5:24 AM PDT 8:48 PM PDT
Civil Twilight 4:46 AM PDT 9:26 PM PDT
Nautical Twilight 3:56 AM PDT 10:16 PM PDT
Astronomical Twilight 2:52 AM PDT 11:21 PM PDT
Moon 6:08 PM PDT (5/22) 3:43 AM PDT (5/22)
Length of Visible Light 16h 39m
Length of Day
15h 24m
Waxing Gibbous, 92% of the Moon is Illuminated
May 22
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First 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 48.9 °F - 41.0 °F 74% 29.89 in 8.0 mi SW 13.8 mph 19.6 mph 0.02 in Rain Rain
1:53 AM 48.0 °F - 43.0 °F 83% 29.89 in 7.0 mi SSW 11.5 mph - 0.04 in Rain Light Rain
2:53 AM 48.0 °F - 43.0 °F 83% 29.90 in 10.0 mi SSW 10.4 mph - 0.03 in Rain Light Rain
3:53 AM 46.9 °F - 42.1 °F 83% 29.90 in 9.0 mi SSW 11.5 mph - 0.01 in Rain Light Rain
4:27 AM 46.4 °F 42.4 °F 42.8 °F 87% 29.87 in 5.0 mi South 8.1 mph - 0.04 in Rain Rain
4:53 AM 46.0 °F 41.4 °F 42.1 °F 86% 29.89 in 4.0 mi WSW 9.2 mph - 0.08 in Rain Rain
5:53 AM 46.0 °F 41.4 °F 42.1 °F 86% 29.89 in 5.0 mi South 9.2 mph - 0.07 in Rain Light Rain
6:53 AM 46.0 °F 41.0 °F 42.1 °F 86% 29.90 in 5.0 mi SSW 10.4 mph - 0.08 in Rain Light Rain
7:15 AM 46.4 °F 42.9 °F 42.8 °F 87% 29.87 in 2.0 mi South 6.9 mph - 0.05 in Rain Rain
7:53 AM 46.0 °F 43.9 °F 43.0 °F 89% 29.90 in 3.0 mi ESE 4.6 mph - 0.08 in Rain Light Rain
8:53 AM 46.0 °F 42.5 °F 43.0 °F 89% 29.91 in 3.0 mi SSE 6.9 mph - 0.04 in Rain Light Rain
9:53 AM 46.0 °F 42.5 °F 43.0 °F 89% 29.91 in 2.0 mi SE 6.9 mph - 0.01 in Rain Light Rain
10:53 AM 46.0 °F 41.4 °F 43.0 °F 89% 29.92 in 2.0 mi SE 9.2 mph - 0.03 in Rain Rain
11:53 AM 46.9 °F - 44.1 °F 90% 29.92 in 5.0 mi South 6.9 mph - 0.06 in Rain Light Rain
12:53 PM 50.0 °F - 46.0 °F 86% 29.92 in 7.0 mi South 6.9 mph - 0.00 in Rain Light Rain
1:53 PM 50.0 °F - 45.0 °F 83% 29.93 in 10.0 mi South 6.9 mph - N/A   Overcast
2:03 PM 50.0 °F - 44.6 °F 82% 29.91 in 10.0 mi South 8.1 mph - N/A   Overcast
2:23 PM 50.0 °F - 44.6 °F 82% 29.91 in 10.0 mi SW 10.4 mph - N/A   Overcast
2:53 PM 50.0 °F - 43.0 °F 77% 29.94 in 10.0 mi SSW 6.9 mph - N/A   Overcast
3:38 PM 51.8 °F - 44.6 °F 76% 29.91 in 10.0 mi SW 6.9 mph - 0.00 in   Overcast
3:53 PM 51.1 °F - 44.1 °F 77% 29.94 in 10.0 mi SW 4.6 mph - 0.00 in   Mostly Cloudy
4:53 PM 52.0 °F - 45.0 °F 77% 29.94 in 10.0 mi South 9.2 mph - 0.00 in Rain Light Rain
5:53 PM 51.1 °F - 46.0 °F 83% 29.94 in 10.0 mi SSW 5.8 mph - 0.00 in Rain Light Rain
6:53 PM 51.1 °F - 46.0 °F 83% 29.96 in 10.0 mi SSW 9.2 mph - 0.00 in Rain Light Rain
7:29 PM 50.0 °F - 44.6 °F 82% 29.94 in 10.0 mi SSW 8.1 mph - 0.00 in   Overcast
7:53 PM 50.0 °F - 45.0 °F 83% 29.96 in 10.0 mi SSW 8.1 mph - 0.00 in Rain Light Rain
8:53 PM 48.0 °F - 44.1 °F 86% 29.96 in 10.0 mi WSW 3.5 mph - 0.01 in   Mostly Cloudy
9:53 PM 48.0 °F - 43.0 °F 83% 29.97 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:53 PM 48.0 °F - 44.1 °F 86% 29.97 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:43 PM 46.4 °F - 42.8 °F 87% 29.94 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:53 PM 46.9 °F - 43.0 °F 86% 29.96 in 10.0 mi Calm Calm - N/A   Mostly Cloudy