Weather History for KSEA - February, 2012

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Sunday, February 19, 2012

  Actual Average Record
Temperature  
Mean Temperature 40 °F 44 °F  
Max Temperature 44 °F 50 °F 67 °F (1977)
Min Temperature 36 °F 37 °F 22 °F (1986)
Degree Days  
Heating Degree Days 25 21  
Month to date heating degree days 382 417  
Since 1 July heating degree days 3143 3066  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 32 °F    
Average Humidity 72    
Maximum Humidity 85    
Minimum Humidity 58    
Precipitation  
Precipitation 0.00 in 0.12 in 1.76 in (1975)
Month to date precipitation 2.47 2.41  
Year to date precipitation 9.30 7.98  
Snow  
Snow 0.00 in - 4.60 in (1949)
Month to date snowfall 0.0  
Since 1 July snowfall 9.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 11 mph (South)    
Max Wind Speed 24 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Feb. 19, 2012 Rise Set
Actual Time 7:08 AM PST 5:38 PM PST
Civil Twilight 6:37 AM PST 6:09 PM PST
Nautical Twilight 6:01 AM PST 6:45 PM PST
Astronomical Twilight 5:25 AM PST 7:21 PM PST
Moon 5:39 AM PST (2/19) 3:40 PM PST (2/19)
Length of Visible Light 11h 32m
Length of Day
10h 30m
Waning Crescent, 5% of the Moon is Illuminated
Feb 19
Waning Crescent
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 41.0 °F 33.5 °F 35.6 °F 81% 30.07 in 10.0 mi SSW 13.8 mph - N/A   Overcast
1:53 AM 39.9 °F 30.8 °F 35.1 °F 83% 30.11 in 10.0 mi SW 18.4 mph 26.5 mph N/A   Overcast
2:53 AM 39.9 °F 32.5 °F 35.1 °F 83% 30.12 in 10.0 mi SSW 12.7 mph 20.7 mph N/A   Overcast
3:53 AM 39.0 °F 31.0 °F 34.0 °F 82% 30.12 in 10.0 mi South 13.8 mph - N/A   Overcast
4:53 AM 37.4 °F 29.3 °F 33.8 °F 87% 30.09 in 10.0 mi South 12.7 mph - N/A   Overcast
5:53 AM 37.0 °F 30.4 °F 32.0 °F 82% 30.12 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
6:53 AM 37.0 °F 28.9 °F 32.0 °F 82% 30.11 in 10.0 mi South 12.7 mph - N/A   Scattered Clouds
7:53 AM 37.0 °F 28.9 °F 32.0 °F 82% 30.12 in 10.0 mi South 12.7 mph - N/A   Scattered Clouds
8:53 AM 39.0 °F 31.4 °F 33.1 °F 79% 30.12 in 10.0 mi South 12.7 mph - N/A   Mostly Cloudy
9:53 AM 41.0 °F 34.7 °F 32.0 °F 70% 30.12 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
10:53 AM 43.0 °F 35.7 °F 33.1 °F 68% 30.11 in 10.0 mi South 15.0 mph - N/A   Mostly Cloudy
11:53 AM 42.1 °F 34.9 °F 33.1 °F 70% 30.10 in 10.0 mi SSW 13.8 mph - N/A   Mostly Cloudy
12:53 PM 43.0 °F 35.1 °F 33.1 °F 68% 30.09 in 10.0 mi SSW 17.3 mph 20.7 mph N/A   Overcast
1:53 PM 43.0 °F 38.2 °F 34.0 °F 71% 30.07 in 10.0 mi SSW 8.1 mph - N/A   Overcast
2:53 PM 44.1 °F 37.7 °F 30.9 °F 60% 30.05 in 10.0 mi SSW 12.7 mph - N/A   Mostly Cloudy
3:53 PM 44.1 °F 38.6 °F 30.9 °F 60% 30.04 in 10.0 mi South 10.4 mph - N/A   Overcast
4:53 PM 43.0 °F 38.2 °F 30.0 °F 60% 30.01 in 10.0 mi South 8.1 mph - N/A   Overcast
5:53 PM 42.1 °F 37.7 °F 30.0 °F 62% 30.00 in 10.0 mi South 6.9 mph - N/A   Overcast
6:53 PM 41.0 °F 38.0 °F 28.4 °F 61% 29.97 in 10.0 mi SE 4.6 mph - N/A   Overcast
7:53 PM 41.0 °F 37.1 °F 28.9 °F 62% 30.00 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
8:53 PM 39.9 °F 35.8 °F 30.0 °F 68% 29.99 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
9:53 PM 39.0 °F 34.8 °F 30.0 °F 70% 29.97 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
10:53 PM 37.9 °F 32.7 °F 30.0 °F 73% 29.95 in 10.0 mi SE 6.9 mph - N/A   Scattered Clouds
11:53 PM 36.0 °F 32.1 °F 30.0 °F 79% 29.94 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy