Weather History for Seattle, WA

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Thursday, December 22, 2011

  Actual Average Record
Temperature  
Mean Temperature 33 °F 40 °F  
Max Temperature 38 °F 45 °F 57 °F (2005)
Min Temperature 27 °F 35 °F 14 °F (1983)
Degree Days  
Heating Degree Days 32 25  
Month to date heating degree days 606 535  
Since 1 July heating degree days 1798 1718  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 148 189  
Moisture  
Dew Point 30 °F    
Average Humidity 91    
Maximum Humidity 100    
Minimum Humidity 82    
Precipitation  
Precipitation 0.00 in 0.17 in 1.28 in (1964)
Month to date precipitation 0.25 3.86  
Year to date precipitation 34.41 36.00  
Snow  
Snow 0.00 in - 2.20 in (1968)
Month to date snowfall 0.0  
Since 1 July snowfall T  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.40 in    
Wind  
Wind Speed 4 mph (SE)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 4 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 22, 2011 Rise Set
Actual Time 7:54 AM PST 4:21 PM PST
Civil Twilight 7:18 AM PST 4:57 PM PST
Nautical Twilight 6:39 AM PST 5:36 PM PST
Astronomical Twilight 6:01 AM PST 6:13 PM PST
Moon 5:43 AM PST (12/22) 2:36 PM PST (12/22)
Length of Visible Light 9h 38m
Length of Day
8h 26m
Waning Crescent, 5% of the Moon is Illuminated
Dec 22
Waning Crescent
Dec 24
New
Dec 31
First Quarter
Jan 8
Full
Jan 16
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 32.0 °F - 28.9 °F 88% 30.55 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 30.9 °F 26.2 °F 28.0 °F 89% 30.54 in 10.0 mi SE 4.6 mph - N/A   Clear
2:53 AM 28.9 °F - 27.0 °F 92% 30.53 in 9.0 mi Calm Calm - N/A   Clear
3:53 AM 28.0 °F - 26.1 °F 92% 30.50 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 27.0 °F 21.6 °F 25.0 °F 92% 30.50 in 10.0 mi North 4.6 mph - N/A   Clear
5:13 AM 28.4 °F 20.4 °F 26.6 °F 93% 30.46 in 3.0 mi NE 8.1 mph - N/A Fog Patches of Fog
5:16 AM 28.4 °F 19.7 °F 26.6 °F 93% 30.46 in 0.8 mi NE 9.2 mph - N/A Fog Patches of Fog
5:42 AM 30.2 °F 23.4 °F 28.4 °F 93% 30.46 in 0.2 mi NE 6.9 mph - N/A Fog Light Freezing Fog
5:53 AM 30.2 °F 22.6 °F 28.4 °F 93% 30.45 in 0.2 mi NE 8.1 mph - N/A Fog Light Freezing Fog
6:05 AM 30.2 °F 21.9 °F 30.2 °F 100% 30.45 in 0.1 mi NNE 9.2 mph - N/A Fog Light Freezing Fog
6:42 AM 32.0 °F 24.2 °F 30.2 °F 93% 30.45 in 0.1 mi North 9.2 mph - N/A Fog Light Freezing Fog
6:53 AM 32.0 °F 25.6 °F 30.9 °F 96% 30.48 in 0.1 mi North 6.9 mph - N/A Fog Light Freezing Fog
7:17 AM 30.2 °F 26.7 °F 30.2 °F 100% 30.43 in 0.2 mi NNE 3.5 mph - N/A Fog Light Freezing Fog
7:53 AM 30.2 °F 24.3 °F 28.4 °F 93% 30.42 in 0.2 mi East 5.8 mph - N/A Fog Light Freezing Fog
8:05 AM 28.4 °F 23.3 °F 28.4 °F 100% 30.41 in 0.5 mi SE 4.6 mph - N/A Fog Light Freezing Fog
8:26 AM 28.4 °F - 28.4 °F 100% 30.42 in 0.8 mi Calm Calm - N/A Fog Patches of Fog
8:34 AM 28.4 °F - 28.4 °F 100% 30.42 in 0.8 mi Calm Calm - N/A Fog Patches of Fog
8:43 AM 28.4 °F - 28.4 °F 100% 30.42 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
8:53 AM 28.0 °F - 27.0 °F 96% 30.45 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
9:13 AM 30.2 °F - 30.2 °F 100% 30.42 in 5.0 mi Calm Calm - N/A Fog Patches of Fog
9:53 AM 32.0 °F 28.7 °F 30.0 °F 92% 30.45 in 7.0 mi SE 3.5 mph - N/A Fog Patches of Fog
10:53 AM 33.1 °F - 32.0 °F 96% 30.44 in 7.0 mi Calm Calm - N/A Fog Patches of Fog
11:12 AM 33.8 °F 29.6 °F 30.2 °F 87% 30.40 in 0.5 mi SW 4.6 mph - N/A Fog Patches of Fog
11:19 AM 33.8 °F 30.8 °F 32.0 °F 93% 30.40 in 0.1 mi SW 3.5 mph - N/A Fog Fog
11:41 AM 33.8 °F - 33.8 °F 100% 30.39 in 0.2 mi Calm Calm - N/A Fog Fog
11:49 AM 33.8 °F - 33.8 °F 100% 30.38 in 0.2 mi Calm Calm - N/A Fog Fog
12:05 PM 35.6 °F 32.8 °F 33.8 °F 93% 30.38 in 5.0 mi SW 3.5 mph - N/A Fog Patches of Fog
12:12 PM 35.6 °F 32.8 °F 33.8 °F 93% 30.38 in 1.5 mi SSW 3.5 mph - N/A Fog Patches of Fog
12:28 PM 35.6 °F 32.8 °F 33.8 °F 93% 30.37 in 1.5 mi SSW 3.5 mph - N/A Fog Patches of Fog
12:39 PM 37.4 °F 33.8 °F 33.8 °F 87% 30.36 in 7.0 mi South 4.6 mph - N/A   Mostly Cloudy
12:53 PM 37.0 °F 33.3 °F 33.1 °F 86% 30.39 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
1:53 PM 36.0 °F 31.1 °F 33.1 °F 89% 30.37 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
2:53 PM 35.6 °F 30.7 °F 32.0 °F 87% 30.32 in 8.0 mi SSE 5.8 mph - N/A   Scattered Clouds
3:53 PM 32.0 °F 26.4 °F 30.9 °F 96% 30.36 in 1.0 mi SSE 5.8 mph - N/A   Scattered Clouds
3:58 PM 32.0 °F 26.4 °F 30.2 °F 93% 30.32 in 0.8 mi SSE 5.8 mph - N/A   Mist
4:08 PM 32.0 °F 26.4 °F 30.2 °F 93% 30.32 in 0.5 mi SE 5.8 mph - N/A Fog Fog
4:17 PM 32.0 °F 27.5 °F 30.2 °F 93% 30.32 in 0.1 mi SE 4.6 mph - N/A Fog Fog
4:38 PM 32.0 °F 28.7 °F 30.2 °F 93% 30.32 in 0.2 mi SSE 3.5 mph - N/A Fog Fog
4:53 PM 32.0 °F 28.7 °F 30.9 °F 96% 30.36 in 0.2 mi South 3.5 mph - N/A Fog Fog
5:12 PM 32.0 °F 27.5 °F 30.2 °F 93% 30.33 in 0.2 mi SE 4.6 mph - N/A Fog Fog
5:32 PM 30.2 °F 21.9 °F 30.2 °F 100% 30.32 in 1.8 mi SE 9.2 mph - N/A   Mostly Cloudy
5:36 PM 30.2 °F 20.2 °F 28.4 °F 93% 30.32 in 3.0 mi SE 12.7 mph - N/A   Mostly Cloudy
5:46 PM 30.2 °F 24.3 °F 28.4 °F 93% 30.33 in 5.0 mi SSE 5.8 mph - N/A   Scattered Clouds
5:53 PM 30.0 °F 24.1 °F 30.0 °F 100% 30.37 in 6.0 mi SSE 5.8 mph - N/A   Scattered Clouds
6:53 PM 32.0 °F 25.6 °F 28.9 °F 88% 30.35 in 10.0 mi SE 6.9 mph - N/A   Scattered Clouds
7:53 PM 32.0 °F - 30.2 °F 93% 30.32 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:53 PM 32.0 °F 27.5 °F 28.9 °F 88% 30.37 in 10.0 mi SSE 4.6 mph - N/A   Partly Cloudy
9:53 PM 32.0 °F 26.4 °F 28.0 °F 85% 30.37 in 10.0 mi ESE 5.8 mph - N/A   Partly Cloudy
10:53 PM 32.0 °F 27.5 °F 28.0 °F 85% 30.36 in 10.0 mi SSE 4.6 mph - N/A   Scattered Clouds
11:53 PM 35.1 °F 29.3 °F 28.0 °F 76% 30.39 in 10.0 mi WSW 6.9 mph - N/A   Scattered Clouds