Weather History for KSEA - January, 2012

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Friday, January 27, 2012

  Actual Average Record
Temperature  
Mean Temperature 36 °F 43 °F  
Max Temperature 44 °F 48 °F 58 °F (1952)
Min Temperature 28 °F 37 °F 11 °F (1957)
Degree Days  
Heating Degree Days 29 22  
Month to date heating degree days 692 622  
Since 1 July heating degree days 2675 2560  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 28 °F    
Average Humidity 73    
Maximum Humidity 92    
Minimum Humidity 53    
Precipitation  
Precipitation 0.00 in 0.16 in 1.61 in (1967)
Month to date precipitation 5.53 4.94  
Year to date precipitation 5.53 4.94  
Snow  
Snow 0.00 in - 14.90 in (1969)
Month to date snowfall 9.6  
Since 1 July snowfall 9.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.60 in    
Wind  
Wind Speed 3 mph (East)    
Max Wind Speed 8 mph    
Max Gust Speed 10 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 27, 2012 Rise Set
Actual Time 7:41 AM PST 5:02 PM PST
Civil Twilight 7:08 AM PST 5:36 PM PST
Nautical Twilight 6:31 AM PST 6:13 PM PST
Astronomical Twilight 5:55 AM PST 6:49 PM PST
Moon 9:15 AM PST (1/27) 10:25 PM PST (1/27)
Length of Visible Light 10h 27m
Length of Day
9h 20m
Waxing Crescent, 20% of the Moon is Illuminated
Jan 27
Waxing Crescent
Jan 30
First Quarter
Feb 7
Full
Feb 14
Last Quarter
Feb 21
New

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 32.0 °F 28.7 °F 28.9 °F 88% 30.63 in 10.0 mi SSE 3.5 mph - N/A   Clear
1:53 AM 33.1 °F 30.0 °F 28.9 °F 85% 30.63 in 10.0 mi SE 3.5 mph - N/A   Partly Cloudy
2:53 AM 30.9 °F - 27.0 °F 85% 30.64 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:53 AM 30.9 °F - 28.9 °F 92% 30.66 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:53 AM 30.0 °F 25.2 °F 28.0 °F 92% 30.66 in 10.0 mi ESE 4.6 mph - N/A   Partly Cloudy
5:53 AM 30.0 °F - 28.0 °F 92% 30.65 in 6.0 mi Calm Calm - N/A   Partly Cloudy
6:39 AM 30.2 °F - 28.4 °F 93% 30.62 in 6.0 mi Calm Calm - N/A   Scattered Clouds
6:53 AM 28.9 °F - 27.0 °F 92% 30.65 in 6.0 mi Calm Calm - N/A   Scattered Clouds
7:53 AM 30.0 °F 25.2 °F 27.0 °F 88% 30.63 in 10.0 mi SSE 4.6 mph - N/A   Scattered Clouds
8:53 AM 33.1 °F 28.7 °F 28.9 °F 85% 30.63 in 10.0 mi SSE 4.6 mph - N/A   Scattered Clouds
9:53 AM 35.1 °F - 28.0 °F 76% 30.64 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:53 AM 37.4 °F 32.8 °F 28.4 °F 70% 30.60 in 10.0 mi SE 5.8 mph - N/A   Scattered Clouds
11:53 AM 39.9 °F - 28.9 °F 65% 30.62 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:53 PM 42.1 °F - 28.0 °F 58% 30.60 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:53 PM 44.1 °F 41.5 °F 28.9 °F 55% 30.59 in 10.0 mi North 4.6 mph - N/A   Scattered Clouds
2:53 PM 44.1 °F 41.5 °F 28.9 °F 55% 30.59 in 10.0 mi NNW 4.6 mph - N/A   Scattered Clouds
3:53 PM 43.0 °F 41.3 °F 27.0 °F 53% 30.58 in 10.0 mi North 3.5 mph - N/A   Scattered Clouds
4:53 PM 39.0 °F 35.7 °F 27.0 °F 62% 30.57 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy
5:53 PM 36.0 °F 32.1 °F 27.0 °F 70% 30.57 in 10.0 mi North 4.6 mph - N/A   Scattered Clouds
6:53 PM 37.9 °F 35.5 °F 26.1 °F 62% 30.53 in 10.0 mi NNE 3.5 mph - N/A   Partly Cloudy
7:53 PM 36.0 °F 33.3 °F 26.1 °F 67% 30.53 in 10.0 mi North 3.5 mph - N/A   Clear
8:53 PM 37.0 °F - 28.0 °F 70% 30.53 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:53 PM 35.1 °F 29.3 °F 28.0 °F 76% 30.53 in 10.0 mi ESE 6.9 mph - N/A   Partly Cloudy
10:53 PM 34.0 °F 28.8 °F 28.0 °F 79% 30.53 in 10.0 mi SE 5.8 mph - N/A   Partly Cloudy
11:53 PM 34.0 °F 28.0 °F 28.0 °F 79% 30.52 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy