Seattle, WA

2:02 AM PST on January 24, 2018 (GMT -0800)
Seattle-Tacoma International

Weather History for KSEA - December, 2012

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Sunday, December 23, 2012

  Actual Average Record
Temperature  
Mean Temperature 42 °F 40 °F  
Max Temperature 45 °F 45 °F 58 °F (1950)
Min Temperature 38 °F 35 °F 9 °F (1983)
Degree Days  
Heating Degree Days 23 25  
Month to date heating degree days 520 560  
Since 1 July heating degree days 1547 1743  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 177 189  
Moisture  
Dew Point 35 °F    
Average Humidity 80    
Maximum Humidity 92    
Minimum Humidity 67    
Precipitation  
Precipitation 0.26 in 0.17 in 1.14 in (1949)
Month to date precipitation 5.91 4.03  
Year to date precipitation 47.32 36.17  
Snow  
Snow 0.00 in - 8.90 in (1965)
Month to date snowfall 0.6  
Since 1 July snowfall 0.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.73 in    
Wind  
Wind Speed 6 mph (SSW)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 23, 2012 Rise Set
Actual Time 7:55 AM PST 4:22 PM PST
Civil Twilight 7:19 AM PST 4:58 PM PST
Nautical Twilight 6:40 AM PST 5:37 PM PST
Astronomical Twilight 6:02 AM PST 6:14 PM PST
Moon 1:23 PM PST (12/23) 3:34 AM PST (12/23)
Length of Visible Light 9h 38m
Length of Day
8h 27m
Waxing Gibbous, 82% of the Moon is Illuminated
Dec 23
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First 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 39.0 °F 35.7 °F 33.1 °F 79% 29.76 in 10.0 mi South 4.6 mph - N/A   Overcast
1:53 AM 41.0 °F 38.0 °F 35.1 °F 79% 29.78 in 10.0 mi South 4.6 mph - 0.00 in   Overcast
2:53 AM 39.9 °F 35.1 °F 34.0 °F 79% 29.77 in 10.0 mi SSE 6.9 mph - 0.00 in   Overcast
3:53 AM 41.0 °F 38.0 °F 33.8 °F 76% 29.75 in 10.0 mi South 4.6 mph - N/A   Overcast
4:53 AM 43.0 °F 38.8 °F 32.0 °F 65% 29.77 in 10.0 mi South 6.9 mph - 0.00 in Rain Light Rain
5:53 AM 42.1 °F 39.2 °F 32.0 °F 67% 29.76 in 10.0 mi ESE 4.6 mph - 0.00 in   Overcast
6:53 AM 42.1 °F 39.2 °F 32.0 °F 67% 29.75 in 10.0 mi ESE 4.6 mph - N/A   Overcast
7:53 AM 42.1 °F 37.1 °F 32.0 °F 67% 29.75 in 10.0 mi SE 8.1 mph - 0.00 in   Overcast
8:53 AM 41.0 °F 37.1 °F 34.0 °F 76% 29.76 in 7.0 mi SE 5.8 mph - 0.01 in Rain Light Rain
9:53 AM 42.1 °F 36.6 °F 34.0 °F 73% 29.73 in 10.0 mi East 9.2 mph - 0.01 in   Overcast
10:53 AM 43.0 °F 41.3 °F 36.0 °F 76% 29.70 in 10.0 mi NNW 3.5 mph - N/A   Overcast
11:53 AM 45.0 °F 42.6 °F 36.0 °F 71% 29.68 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
12:53 PM 44.1 °F 42.5 °F 37.0 °F 76% 29.66 in 10.0 mi West 3.5 mph - N/A   Overcast
1:53 PM 44.1 °F 40.8 °F 37.0 °F 76% 29.64 in 10.0 mi NW 5.8 mph - N/A   Overcast
2:53 PM 43.0 °F 39.5 °F 37.0 °F 80% 29.64 in 10.0 mi NNW 5.8 mph - N/A   Overcast
3:53 PM 43.0 °F 40.3 °F 36.0 °F 76% 29.65 in 10.0 mi NW 4.6 mph - N/A   Overcast
4:53 PM 41.0 °F 36.4 °F 37.0 °F 86% 29.67 in 10.0 mi NW 6.9 mph - 0.01 in Rain Light Rain
5:04 PM 41.0 °F 38.0 °F 37.4 °F 87% 29.65 in 9.0 mi NNW 4.6 mph - 0.01 in Rain Light Rain
5:53 PM 41.0 °F - 37.9 °F 89% 29.69 in 7.0 mi Calm Calm - 0.04 in Rain Light Rain
6:36 PM 39.2 °F 35.0 °F 35.6 °F 87% 29.68 in 7.0 mi WSW 5.8 mph - 0.06 in Rain Rain
6:44 PM 39.2 °F 35.0 °F 35.6 °F 87% 29.68 in 7.0 mi WSW 5.8 mph - 0.07 in Rain Light Rain
6:53 PM 39.0 °F 34.8 °F 36.0 °F 89% 29.72 in 6.0 mi WSW 5.8 mph - 0.08 in Rain Light Rain
7:22 PM 39.2 °F 35.0 °F 35.6 °F 87% 29.70 in 7.0 mi SSW 5.8 mph - 0.04 in Rain Light Rain
7:27 PM 37.4 °F 31.4 °F 35.6 °F 93% 29.70 in 7.0 mi SW 8.1 mph - 0.06 in Rain Rain
7:53 PM 37.9 °F 35.5 °F 35.1 °F 89% 29.74 in 10.0 mi SSW 3.5 mph - 0.07 in Rain Light Rain
8:31 PM 39.2 °F 35.0 °F 35.6 °F 87% 29.73 in 10.0 mi SSW 5.8 mph - 0.01 in Rain Light Rain
8:53 PM 39.0 °F 33.4 °F 36.0 °F 89% 29.76 in 10.0 mi South 8.1 mph - 0.01 in Rain Light Rain
9:53 PM 37.9 °F 31.5 °F 35.1 °F 89% 29.78 in 9.0 mi South 9.2 mph - 0.02 in Rain Light Rain
10:53 PM 37.9 °F 32.1 °F 35.1 °F 89% 29.82 in 10.0 mi South 8.1 mph - 0.01 in   Overcast
11:53 PM 37.9 °F 32.1 °F 36.0 °F 93% 29.84 in 10.0 mi South 8.1 mph - N/A   Overcast