Weather History for Seattle, WA

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Tuesday, January 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 35 °F 42 °F  
Max Temperature 38 °F 47 °F 55 °F (1977)
Min Temperature 32 °F 37 °F 15 °F (1950)
Degree Days  
Heating Degree Days 30 23  
Month to date heating degree days 427 399  
Since 1 July heating degree days 2410 2337  
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 85    
Maximum Humidity 100    
Minimum Humidity 70    
Precipitation  
Precipitation 0.32 in 0.19 in 2.39 in (2005)
Month to date precipitation 2.41 3.22  
Year to date precipitation 2.41 3.22  
Snow  
Snow T in - 5.70 in (1954)
Month to date snowfall 2.5  
Since 1 July snowfall 2.5  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.89 in    
Wind  
Wind Speed 13 mph (SSW)    
Max Wind Speed 21 mph    
Max Gust Speed 29 mph    
Visibility 6 miles    
Events Fog , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 17, 2012 Rise Set
Actual Time 7:51 AM PST 4:47 PM PST
Civil Twilight 7:16 AM PST 5:22 PM PST
Nautical Twilight 6:38 AM PST 6:00 PM PST
Astronomical Twilight 6:01 AM PST 6:37 PM PST
Moon 2:14 AM PST (1/17) 11:45 AM PST (1/17)
Length of Visible Light 10h 05m
Length of Day
8h 56m
Waning Crescent, 34% of the Moon is Illuminated
Jan 17
Waning Crescent
Jan 22
New
Jan 30
First Quarter
Feb 7
Full
Feb 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
12:13 AM 33.8 °F 23.2 °F 33.8 °F 100% 29.94 in 1.8 mi South 17.3 mph 24.2 mph 0.02 in Snow Light Snow
12:31 AM 33.8 °F 22.8 °F 33.8 °F 100% 29.93 in 3.0 mi South 18.4 mph 24.2 mph 0.03 in Snow Light Snow
12:53 AM 34.0 °F 24.2 °F 34.0 °F 100% 29.96 in 3.0 mi SSW 15.0 mph 25.3 mph 0.04 in Snow Light Snow
1:53 AM 33.8 °F 22.5 °F 33.8 °F 100% 29.91 in 2.5 mi South 19.6 mph 26.5 mph N/A Snow Light Snow
2:20 AM 33.8 °F 23.2 °F 33.8 °F 100% 29.90 in 4.0 mi South 17.3 mph 26.5 mph 0.01 in Snow Light Snow
2:41 AM 33.8 °F 23.9 °F 33.8 °F 100% 29.90 in 9.0 mi South 15.0 mph 25.3 mph 0.01 in Snow Light Snow
2:53 AM 34.0 °F 24.6 °F 33.1 °F 96% 29.93 in 5.0 mi SSW 13.8 mph - 0.01 in Snow Light Snow
3:14 AM 33.8 °F 24.8 °F 33.8 °F 100% 29.88 in 1.2 mi South 12.7 mph - 0.04 in Snow Light Snow
3:21 AM 33.8 °F 23.9 °F 32.0 °F 93% 29.87 in 2.0 mi South 15.0 mph - 0.04 in Snow Light Snow
3:29 AM 33.8 °F 25.3 °F 32.0 °F 93% 29.87 in 5.0 mi South 11.5 mph 20.7 mph 0.05 in Snow Light Snow
3:53 AM 33.8 °F 24.3 °F 33.8 °F 100% 29.87 in 3.0 mi South 13.8 mph - N/A Snow Light Snow
4:35 AM 33.8 °F 22.8 °F 33.8 °F 100% 29.85 in 5.0 mi South 18.4 mph 23.0 mph 0.03 in Snow Light Snow
4:53 AM 34.0 °F 23.0 °F 33.1 °F 96% 29.87 in 5.0 mi South 18.4 mph 23.0 mph 0.03 in Snow Light Snow
5:53 AM 34.0 °F 23.4 °F 33.1 °F 96% 29.86 in 3.0 mi SSW 17.3 mph 25.3 mph 0.01 in Snow Light Snow
6:53 AM 34.0 °F 25.0 °F 34.0 °F 100% 29.85 in 6.0 mi SSW 12.7 mph 23.0 mph 0.02 in Snow Light Snow
7:24 AM 33.8 °F 23.9 °F 33.8 °F 100% 29.81 in 1.5 mi SSW 15.0 mph 25.3 mph 0.01 in Snow Light Snow
7:53 AM 34.0 °F 25.0 °F 34.0 °F 100% 29.83 in 7.0 mi South 12.7 mph - 0.03 in Snow Light Snow
8:53 AM 35.1 °F 25.5 °F 35.1 °F 100% 29.83 in 10.0 mi SSW 15.0 mph 23.0 mph 0.00 in   Overcast
9:53 AM 35.1 °F 25.5 °F 35.1 °F 100% 29.84 in 10.0 mi SSW 15.0 mph - N/A   Overcast
10:39 AM 35.6 °F 25.2 °F 35.6 °F 100% 29.81 in 2.0 mi SW 18.4 mph 25.3 mph 0.00 in Snow Light Snow
10:47 AM 33.8 °F 23.5 °F 33.8 °F 100% 29.82 in 1.0 mi SW 16.1 mph 25.3 mph 0.02 in Snow Light Snow
10:53 AM 33.1 °F 23.9 °F 33.1 °F 100% 29.85 in 0.5 mi SSW 12.7 mph 21.9 mph 0.04 in Fog , Snow Snow
11:03 AM 33.8 °F 24.8 °F 33.8 °F 100% 29.81 in 1.0 mi SSW 12.7 mph - 0.03 in Snow Light Snow
11:17 AM 33.8 °F 23.5 °F 33.8 °F 100% 29.82 in 2.0 mi SSW 16.1 mph 20.7 mph 0.04 in   Overcast
11:28 AM 35.6 °F 26.2 °F 35.6 °F 100% 29.81 in 9.0 mi SSW 15.0 mph 23.0 mph 0.04 in   Mostly Cloudy
11:53 AM 37.4 °F 28.9 °F 37.4 °F 100% 29.81 in 10.0 mi SW 13.8 mph 25.3 mph N/A   Mostly Cloudy
12:53 PM 37.9 °F 29.6 °F 37.0 °F 97% 29.86 in 10.0 mi WSW 13.8 mph 21.9 mph N/A   Overcast
1:44 PM 37.4 °F 27.8 °F 35.6 °F 93% 29.83 in 10.0 mi SW 17.3 mph 25.3 mph N/A   Mostly Cloudy
1:53 PM 37.9 °F 28.2 °F 36.0 °F 93% 29.88 in 10.0 mi SW 18.4 mph - N/A   Mostly Cloudy
2:53 PM 36.0 °F 27.5 °F 28.9 °F 76% 29.89 in 10.0 mi SW 12.7 mph 21.9 mph N/A   Mostly Cloudy
3:53 PM 36.0 °F 27.5 °F 30.0 °F 79% 29.91 in 10.0 mi SW 12.7 mph - N/A   Mostly Cloudy
4:53 PM 35.1 °F 27.4 °F 27.0 °F 72% 29.92 in 10.0 mi SW 10.4 mph 19.6 mph N/A   Mostly Cloudy
5:53 PM 35.1 °F 26.4 °F 26.1 °F 70% 29.94 in 10.0 mi SW 12.7 mph 21.9 mph N/A   Mostly Cloudy
6:53 PM 34.0 °F 24.6 °F 26.1 °F 73% 29.96 in 10.0 mi SW 13.8 mph - N/A   Scattered Clouds
7:53 PM 33.1 °F 27.7 °F 26.1 °F 75% 29.97 in 10.0 mi SW 5.8 mph - N/A   Partly Cloudy
8:26 PM 33.8 °F 29.6 °F 26.6 °F 75% 29.94 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
8:53 PM 33.1 °F 28.7 °F 26.1 °F 75% 29.98 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy
9:05 PM 33.8 °F 29.6 °F 26.6 °F 75% 29.95 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
9:53 PM 33.1 °F 26.1 °F 27.0 °F 78% 29.99 in 10.0 mi NNE 8.1 mph - N/A   Mostly Cloudy
10:53 PM 33.1 °F 28.7 °F 26.1 °F 75% 29.99 in 10.0 mi East 4.6 mph - N/A   Overcast
11:23 PM 32.0 °F 26.4 °F 26.6 °F 80% 29.96 in 10.0 mi East 5.8 mph - N/A   Overcast
11:53 PM 33.1 °F 27.7 °F 25.0 °F 72% 29.99 in 10.0 mi East 5.8 mph - N/A   Overcast