Seattle, WA

5:39 AM PDT on August 17, 2017 (GMT -0700)
Seattle-Tacoma International

Weather History for KSEA - December, 2012

Change the Weather History Date:

Sunday, December 16, 2012

  Actual Average Record
Temperature  
Mean Temperature 41 °F 40 °F  
Max Temperature 44 °F 45 °F 57 °F (1974)
Min Temperature 38 °F 35 °F 10 °F (1964)
Degree Days  
Heating Degree Days 24 25  
Month to date heating degree days 345 385  
Since 1 July heating degree days 1372 1568  
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 86    
Maximum Humidity 92    
Minimum Humidity 79    
Precipitation  
Precipitation 0.89 in 0.17 in 1.32 in (1997)
Month to date precipitation 4.18 2.87  
Year to date precipitation 45.59 35.01  
Snow  
Snow 0.00 in - 1.10 in (1992)
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.52 in    
Wind  
Wind Speed 12 mph (SSE)    
Max Wind Speed 23 mph    
Max Gust Speed 30 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport or City:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Dec. 16, 2012 Rise Set
Actual Time 7:51 AM PST 4:19 PM PST
Civil Twilight 7:15 AM PST 4:55 PM PST
Nautical Twilight 6:36 AM PST 5:34 PM PST
Astronomical Twilight 5:58 AM PST 6:11 PM PST
Moon 10:15 AM PST (12/16) 8:54 PM PST (12/16)
Length of Visible Light 9h 39m
Length of Day
8h 27m
Waxing Crescent, 17% of the Moon is Illuminated
Dec 16
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:16 AM 37.4 °F 28.9 °F 33.8 °F 87% 29.70 in 10.0 mi South 13.8 mph - N/A   Mostly Cloudy
12:53 AM 37.9 °F 30.0 °F 33.1 °F 83% 29.74 in 10.0 mi SSE 12.7 mph - N/A   Mostly Cloudy
1:53 AM 39.0 °F 29.9 °F 33.1 °F 79% 29.74 in 10.0 mi SSW 17.3 mph 25.3 mph N/A   Mostly Cloudy
2:14 AM 39.2 °F 29.6 °F 33.8 °F 81% 29.71 in 10.0 mi South 19.6 mph 28.8 mph N/A   Mostly Cloudy
2:30 AM 39.2 °F 29.3 °F 33.8 °F 81% 29.72 in 10.0 mi SSW 20.7 mph 27.6 mph N/A   Overcast
2:53 AM 37.9 °F 28.2 °F 33.1 °F 83% 29.75 in 10.0 mi South 18.4 mph 25.3 mph N/A   Overcast
3:19 AM 37.4 °F 27.5 °F 33.8 °F 87% 29.72 in 10.0 mi South 18.4 mph 26.5 mph N/A   Overcast
3:53 AM 37.9 °F 28.9 °F 34.0 °F 86% 29.75 in 10.0 mi SSW 16.1 mph 25.3 mph N/A   Overcast
4:14 AM 37.4 °F 27.5 °F 33.8 °F 87% 29.73 in 10.0 mi South 18.4 mph - N/A   Mostly Cloudy
4:31 AM 37.4 °F 28.2 °F 33.8 °F 87% 29.73 in 10.0 mi SSW 16.1 mph - N/A   Mostly Cloudy
4:53 AM 39.2 °F 30.8 °F 33.8 °F 81% 29.74 in 10.0 mi SSW 15.0 mph 28.8 mph N/A Rain Light Rain
5:03 AM 39.2 °F 30.5 °F 33.8 °F 81% 29.74 in 10.0 mi SSW 16.1 mph - 0.00 in   Overcast
5:53 AM 37.9 °F 29.2 °F 33.1 °F 83% 29.76 in 10.0 mi South 15.0 mph - 0.00 in   Mostly Cloudy
6:53 AM 39.0 °F 31.4 °F 34.0 °F 82% 29.77 in 10.0 mi South 12.7 mph - N/A   Mostly Cloudy
7:53 AM 39.0 °F 31.4 °F 34.0 °F 82% 29.77 in 10.0 mi South 12.7 mph - 0.02 in   Overcast
8:53 AM 37.9 °F 29.6 °F 34.0 °F 86% 29.77 in 9.0 mi SSW 13.8 mph - 0.02 in Rain Light Rain
9:33 AM 37.4 °F 31.4 °F 33.8 °F 87% 29.73 in 10.0 mi South 8.1 mph - 0.03 in Rain Light Rain
9:53 AM 37.9 °F 30.9 °F 34.0 °F 86% 29.75 in 10.0 mi South 10.4 mph - 0.04 in Rain Light Rain
10:22 AM 37.4 °F 31.4 °F 35.6 °F 93% 29.71 in 10.0 mi SSE 8.1 mph - 0.02 in Rain Light Rain
10:53 AM 37.9 °F 33.5 °F 35.1 °F 89% 29.72 in 8.0 mi SSE 5.8 mph - 0.03 in Rain Light Rain
11:05 AM 37.4 °F 33.8 °F 35.6 °F 93% 29.69 in 9.0 mi SSE 4.6 mph - 0.00 in Rain Light Rain
11:53 AM 39.0 °F 34.8 °F 35.1 °F 86% 29.68 in 7.0 mi SE 5.8 mph - 0.03 in Rain Light Rain
12:53 PM 39.0 °F 34.8 °F 35.1 °F 86% 29.61 in 5.0 mi ESE 5.8 mph - 0.06 in Rain Light Rain
1:29 PM 39.2 °F 33.6 °F 35.6 °F 87% 29.54 in 7.0 mi ESE 8.1 mph - 0.03 in Rain Light Rain
1:53 PM 39.0 °F 32.8 °F 35.1 °F 86% 29.53 in 7.0 mi ESE 9.2 mph - 0.04 in Rain Light Rain
2:53 PM 39.0 °F 32.8 °F 36.0 °F 89% 29.44 in 10.0 mi East 9.2 mph - 0.03 in Rain Light Rain
3:53 PM 39.9 °F 33.4 °F 36.0 °F 86% 29.34 in 7.0 mi East 10.4 mph - 0.07 in Rain Rain
4:44 PM 39.2 °F 29.8 °F 35.6 °F 87% 29.23 in 7.0 mi East 18.4 mph 25.3 mph 0.17 in Rain Light Rain
4:53 PM 39.0 °F 31.4 °F 35.1 °F 86% 29.24 in 8.0 mi East 12.7 mph 25.3 mph 0.18 in Rain Light Rain
5:53 PM 39.9 °F 32.1 °F 36.0 °F 86% 29.14 in 9.0 mi ESE 13.8 mph - 0.03 in Rain Light Rain
6:53 PM 41.0 °F 35.8 °F 37.0 °F 86% 29.08 in 10.0 mi ESE 8.1 mph - 0.05 in Rain Light Rain
7:53 PM 42.1 °F 37.7 °F 39.0 °F 89% 29.08 in 8.0 mi South 6.9 mph - 0.11 in Rain Light Rain
8:16 PM 42.8 °F 35.1 °F 39.2 °F 87% 29.05 in 6.0 mi SSE 16.1 mph 23.0 mph 0.05 in Rain Rain
8:53 PM 44.1 °F 35.9 °F 39.0 °F 82% 29.06 in 10.0 mi SSE 19.6 mph 28.8 mph 0.07 in Rain Light Rain
9:53 PM 44.1 °F 37.1 °F 39.0 °F 82% 29.06 in 10.0 mi SSE 15.0 mph - 0.00 in   Mostly Cloudy
10:53 PM 44.1 °F 36.8 °F 39.9 °F 85% 29.05 in 6.0 mi South 16.1 mph 26.5 mph 0.03 in Rain Rain
11:53 PM 43.0 °F 36.4 °F 39.0 °F 86% 28.99 in 7.0 mi SE 12.7 mph - 0.08 in Rain Light Rain