Weather History for KSEA - January, 2013

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Monday, January 7, 2013

  Actual Average Record
Temperature  
Mean Temperature 45 °F 41 °F  
Max Temperature 50 °F 46 °F 59 °F (2002)
Min Temperature 40 °F 37 °F 19 °F (1973)
Degree Days  
Heating Degree Days 20 24  
Month to date heating degree days 176 168  
Since 1 July heating degree days 1927 2106  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 42 °F    
Average Humidity 85    
Maximum Humidity 93    
Minimum Humidity 76    
Precipitation  
Precipitation 0.09 in 0.19 in 2.29 in (2009)
Month to date precipitation 0.55 1.30  
Year to date precipitation 0.55 1.30  
Snow  
Snow 0.00 in - 2.70 in (1980)
Month to date snowfall 0.0  
Since 1 July snowfall 0.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 16 mph (SSW)    
Max Wind Speed 30 mph    
Max Gust Speed 40 mph    
Visibility 8 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 07, 2013 Rise Set
Actual Time 7:55 AM PST 4:35 PM PST
Civil Twilight 7:20 AM PST 5:11 PM PST
Nautical Twilight 6:41 AM PST 5:49 PM PST
Astronomical Twilight 6:04 AM PST 6:26 PM PST
Moon 3:21 AM PST (1/7) 12:54 PM PST (1/7)
Length of Visible Light 9h 50m
Length of Day
8h 40m
Waning Crescent, 21% of the Moon is Illuminated
Jan 7
Waning Crescent
Jan 11
New
Jan 18
First Quarter
Jan 26
Full
Feb 3
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 36.4 °F 37.9 °F 89% 29.99 in 6.0 mi SE 6.9 mph - 0.02 in Rain Light Rain
1:53 AM 41.0 °F 36.4 °F 37.9 °F 89% 29.97 in 7.0 mi SSE 6.9 mph - 0.01 in   Overcast
2:53 AM 42.1 °F 37.7 °F 37.9 °F 85% 29.95 in 10.0 mi SE 6.9 mph - N/A   Overcast
3:53 AM 42.1 °F 36.6 °F 39.0 °F 89% 29.92 in 10.0 mi South 9.2 mph - N/A   Overcast
4:53 AM 43.0 °F 36.8 °F 39.0 °F 86% 29.88 in 10.0 mi SSE 11.5 mph - 0.00 in Rain Light Rain
5:53 AM 45.0 °F 38.9 °F 41.0 °F 86% 29.87 in 10.0 mi South 12.7 mph - 0.00 in   Overcast
6:53 AM 45.0 °F 38.5 °F 42.1 °F 90% 29.86 in 10.0 mi South 13.8 mph 23.0 mph 0.02 in   Overcast
7:53 AM 46.9 °F - 42.1 °F 83% 29.86 in 10.0 mi South 15.0 mph - N/A   Overcast
8:40 AM 48.2 °F - 42.8 °F 82% 29.84 in 6.0 mi South 24.2 mph 29.9 mph N/A   Haze
8:53 AM 48.0 °F - 43.0 °F 83% 29.86 in 7.0 mi South 26.5 mph 33.4 mph 0.00 in Rain Light Rain
9:14 AM 46.4 °F 38.5 °F 44.6 °F 93% 29.84 in 4.0 mi South 21.9 mph 29.9 mph 0.00 in   Overcast
9:29 AM 46.4 °F 38.1 °F 44.6 °F 93% 29.85 in 4.0 mi South 24.2 mph 32.2 mph 0.00 in   Overcast
9:53 AM 48.0 °F - 45.0 °F 89% 29.89 in 4.0 mi South 20.7 mph 28.8 mph 0.01 in   Overcast
10:53 AM 48.2 °F - 46.4 °F 93% 29.90 in 5.0 mi South 19.6 mph 29.9 mph N/A Rain Light Rain
10:56 AM 48.2 °F - 46.4 °F 93% 29.90 in 4.0 mi South 18.4 mph 29.9 mph 0.00 in   Overcast
11:38 AM 48.2 °F - 46.4 °F 93% 29.91 in 2.5 mi SSW 18.4 mph 29.9 mph 0.01 in Rain Light Rain
11:53 AM 48.9 °F - 46.0 °F 90% 29.94 in 2.0 mi SSW 25.3 mph 32.2 mph 0.01 in   Overcast
12:24 PM 48.2 °F - 46.4 °F 93% 29.91 in 10.0 mi South 21.9 mph 31.1 mph 0.01 in   Overcast
12:53 PM 48.9 °F - 46.0 °F 90% 29.95 in 10.0 mi SSW 21.9 mph 33.4 mph 0.01 in   Overcast
1:36 PM 48.2 °F - 44.6 °F 87% 29.94 in 10.0 mi SSW 28.8 mph 40.3 mph N/A   Overcast
1:53 PM 48.9 °F - 45.0 °F 86% 29.98 in 10.0 mi SSW 24.2 mph 39.1 mph N/A   Mostly Cloudy
2:53 PM 48.2 °F - 42.8 °F 82% 29.97 in 10.0 mi SSW 24.2 mph 32.2 mph N/A   Mostly Cloudy
3:37 PM 48.2 °F - 42.8 °F 82% 30.00 in 10.0 mi SW 21.9 mph 31.1 mph N/A   Overcast
3:53 PM 48.9 °F - 43.0 °F 80% 30.03 in 10.0 mi SW 27.6 mph 38.0 mph N/A   Overcast
4:32 PM 48.2 °F - 42.8 °F 82% 30.02 in 10.0 mi SW 17.3 mph 31.1 mph N/A   Overcast
4:53 PM 48.0 °F - 43.0 °F 83% 30.07 in 10.0 mi SW 16.1 mph 26.5 mph N/A   Overcast
5:53 PM 46.9 °F - 43.0 °F 86% 30.09 in 10.0 mi SSW 17.3 mph 23.0 mph N/A   Overcast
6:50 PM 46.4 °F 39.8 °F 41.0 °F 81% 30.08 in 10.0 mi SSW 16.1 mph 25.3 mph N/A   Overcast
6:53 PM 46.9 °F - 41.0 °F 80% 30.11 in 10.0 mi SW 13.8 mph 25.3 mph N/A   Overcast
7:53 PM 46.9 °F - 39.9 °F 77% 30.12 in 10.0 mi SSW 16.1 mph 23.0 mph N/A   Overcast
8:23 PM 46.4 °F 39.8 °F 39.2 °F 76% 30.10 in 10.0 mi SSW 16.1 mph 24.2 mph N/A   Overcast
8:53 PM 46.0 °F 39.6 °F 39.0 °F 76% 30.14 in 10.0 mi South 15.0 mph 23.0 mph N/A   Overcast
9:53 PM 46.0 °F 39.9 °F 39.0 °F 76% 30.16 in 10.0 mi South 13.8 mph - N/A   Overcast
10:53 PM 46.0 °F 39.9 °F 39.0 °F 76% 30.17 in 10.0 mi SSW 13.8 mph - N/A   Overcast
11:53 PM 46.0 °F 39.3 °F 39.9 °F 79% 30.17 in 10.0 mi SSW 16.1 mph - N/A   Overcast