Seattle, WA
on Tuesday, December 18, 2012

Tuesday
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Daily Summary
 ActualAverageRecord
Temperature
Mean Temperature °F / °C 40°F / 4°C  
Max Temperature 39°F / 4°C 45°F / 7°C 54°F / 12°C (1958)
Min Temperature 33°F / 1°C 35°F / 2°C 18°F / -7°C (1964)
Degree Days
Heating Degree Days 29 25  
Month to date heating degree days 398 435  
Since 1 July heating degree days 1425 1618  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 177 189  
Moisture
Dew Point 30°F / -1°C   
Average Humidity 80    
Maximum Humidity 89    
Minimum Humidity 70    
Precipitation
Precipitation 0.13 in / 3.30 cm 0.16 in / 4.06 cm 1.23 in / 3.12 cm (1960)
Month to date precipitation 4.39 3.19  
Year to date precipitation 45.80 35.33  
Snow
Snow 0.60 in / 1.52 cm in / cm 5.10 in / 12.95 cm (1968)
Month to date snowfall 0.6  
Since 1 July snowfall 0.6  
Snow Depth 1.00 in / 2.54 cm   
Wind
Wind Speed 12 mph / 19 km/h   
Max Wind Speed 20 mph / 32 km/h   
Max Gust Speed 25 mph / 40 km/h   
Visibility 8 miles / 13 kilometers   
Events Snow   

Key: T is trace of precipitation, MM is missing value
Source: NWS Daily Summary
Time(PST)TemperatureDew PointHumidity Pressure Visibility Wind DirectionWind SpeedGust SpeedPrecipitationEvents Conditions
12:53 AM 35.1°F / 1.7°C 30.0°F / -1.1°C 82% 29.92 in / 1013.0 hPa 10.0 miles / 16.1 kilometers South 11.5 mph / 18.5 km/h - N/A   Mostly Cloudy
1:43 AM 35.6°F / 2.0°C 30.2°F / -1.0°C 81% 29.89 in / 1012.1 hPa 6.0 miles / 9.7 kilometers South 12.7 mph / 20.4 km/h 18.4 mph / 29.6 km/h 0.00 in / 0.0 cm Snow Light Snow
1:53 AM 36.0°F / 2.2°C 30.0°F / -1.1°C 79% 29.91 in / 1012.8 hPa 9.0 miles / 14.5 kilometers South 11.5 mph / 18.5 km/h - 0.00 in / 0.0 cm   Overcast
2:37 AM 33.8°F / 1.0°C 30.2°F / -1.0°C 87% 29.89 in / 1012.1 hPa 2.0 miles / 3.2 kilometers South 10.4 mph / 16.7 km/h - 0.01 in / 0.3 cm Snow Light Snow
2:53 AM 33.1°F / 0.6°C 30.9°F / -0.6°C 92% 29.91 in / 1012.9 hPa 1.8 miles / 2.8 kilometers South 10.4 mph / 16.7 km/h - 0.03 in / 0.8 cm Snow Light Snow
3:05 AM 33.8°F / 1.0°C 30.2°F / -1.0°C 87% 29.89 in / 1012.1 hPa 1.2 miles / 2.0 kilometers South 8.1 mph / 13.0 km/h - 0.02 in / 0.5 cm Snow Light Snow
3:22 AM 33.8°F / 1.0°C 30.2°F / -1.0°C 87% 29.88 in / 1011.7 hPa 1.2 miles / 2.0 kilometers South 10.4 mph / 16.7 km/h - 0.04 in / 1.0 cm Snow Light Snow
3:29 AM 33.8°F / 1.0°C 30.2°F / -1.0°C 87% 29.88 in / 1011.7 hPa 0.8 miles / 1.2 kilometers SSE 10.4 mph / 16.7 km/h - 0.06 in / 1.5 cm Snow Light Snow
3:45 AM 33.8°F / 1.0°C 30.2°F / -1.0°C 87% 29.88 in / 1011.7 hPa 1.8 miles / 2.8 kilometers South 9.2 mph / 14.8 km/h - 0.08 in / 2.0 cm Snow Light Snow
3:53 AM 33.1°F / 0.6°C 30.9°F / -0.6°C 92% 29.91 in / 1012.8 hPa 3.0 miles / 4.8 kilometers South 12.7 mph / 20.4 km/h - 0.08 in / 2.0 cm Snow Light Snow
4:02 AM 33.8°F / 1.0°C 30.2°F / -1.0°C 87% 29.87 in / 1011.4 hPa 3.0 miles / 4.8 kilometers South 15.0 mph / 24.1 km/h - 0.01 in / 0.3 cm Snow Light Snow
4:13 AM 33.8°F / 1.0°C 30.2°F / -1.0°C 87% 29.88 in / 1011.7 hPa 3.0 miles / 4.8 kilometers South 15.0 mph / 24.1 km/h - 0.01 in / 0.3 cm Snow Light Snow
4:53 AM 34.0°F / 1.1°C 30.9°F / -0.6°C 89% 29.91 in / 1012.6 hPa 9.0 miles / 14.5 kilometers South 11.5 mph / 18.5 km/h - 0.02 in / 0.5 cm Snow Light Snow
5:53 AM 34.0°F / 1.1°C 30.9°F / -0.6°C 89% 29.91 in / 1012.9 hPa 10.0 miles / 16.1 kilometers South 13.8 mph / 22.2 km/h 20.7 mph / 33.3 km/h 0.00 in / 0.0 cm   Mostly Cloudy
6:53 AM 34.0°F / 1.1°C 30.9°F / -0.6°C 89% 29.92 in / 1013.1 hPa 10.0 miles / 16.1 kilometers SSW 10.4 mph / 16.7 km/h - N/A   Overcast
7:53 AM 34.0°F / 1.1°C 30.9°F / -0.6°C 89% 29.94 in / 1013.6 hPa 10.0 miles / 16.1 kilometers South 15.0 mph / 24.1 km/h - N/A   Mostly Cloudy
8:53 AM 34.0°F / 1.1°C 30.9°F / -0.6°C 89% 29.95 in / 1014.0 hPa 10.0 miles / 16.1 kilometers SSW 12.7 mph / 20.4 km/h 23.0 mph / 37.0 km/h N/A   Mostly Cloudy
9:53 AM 35.1°F / 1.7°C 32.0°F / 0.0°C 89% 29.96 in / 1014.5 hPa 10.0 miles / 16.1 kilometers South 11.5 mph / 18.5 km/h - N/A   Mostly Cloudy
10:53 AM 36.0°F / 2.2°C 32.0°F / 0.0°C 86% 29.98 in / 1015.0 hPa 10.0 miles / 16.1 kilometers SSW 12.7 mph / 20.4 km/h 20.7 mph / 33.3 km/h N/A   Mostly Cloudy
11:17 AM 37.4°F / 3.0°C 32.0°F / 0.0°C 81% 29.94 in / 1013.8 hPa 10.0 miles / 16.1 kilometers South 13.8 mph / 22.2 km/h 19.6 mph / 31.5 km/h N/A   Mostly Cloudy
11:53 AM 37.0°F / 2.8°C 30.9°F / -0.6°C 79% 29.98 in / 1015.1 hPa 10.0 miles / 16.1 kilometers SSW 15.0 mph / 24.1 km/h - N/A   Mostly Cloudy
12:53 PM 37.0°F / 2.8°C 32.0°F / 0.0°C 82% 29.98 in / 1015.0 hPa 10.0 miles / 16.1 kilometers SSW 15.0 mph / 24.1 km/h - 0.00 in / 0.0 cm   Mostly Cloudy
1:53 PM 37.9°F / 3.3°C 32.0°F / 0.0°C 79% 29.97 in / 1014.9 hPa 10.0 miles / 16.1 kilometers SSW 15.0 mph / 24.1 km/h 24.2 mph / 38.9 km/h N/A   Mostly Cloudy
2:06 PM 37.4°F / 3.0°C 32.0°F / 0.0°C 81% 29.94 in / 1013.8 hPa 10.0 miles / 16.1 kilometers SSW 17.3 mph / 27.8 km/h 23.0 mph / 37.0 km/h N/A   Mostly Cloudy
2:53 PM 37.9°F / 3.3°C 30.9°F / -0.6°C 76% 29.99 in / 1015.3 hPa 10.0 miles / 16.1 kilometers SSW 13.8 mph / 22.2 km/h 21.9 mph / 35.2 km/h N/A   Mostly Cloudy
3:53 PM 37.0°F / 2.8°C 30.0°F / -1.1°C 76% 29.99 in / 1015.5 hPa 10.0 miles / 16.1 kilometers SSW 13.8 mph / 22.2 km/h - N/A   Mostly Cloudy
4:53 PM 37.0°F / 2.8°C 28.9°F / -1.7°C 73% 30.00 in / 1015.8 hPa 10.0 miles / 16.1 kilometers SSW 15.0 mph / 24.1 km/h 25.3 mph / 40.7 km/h N/A   Overcast
5:53 PM 37.0°F / 2.8°C 30.0°F / -1.1°C 76% 30.01 in / 1016.0 hPa 10.0 miles / 16.1 kilometers South 12.7 mph / 20.4 km/h - N/A   Overcast
6:53 PM 37.0°F / 2.8°C 30.0°F / -1.1°C 76% 30.01 in / 1016.2 hPa 10.0 miles / 16.1 kilometers South 10.4 mph / 16.7 km/h - N/A   Overcast
7:14 PM 37.4°F / 3.0°C 30.2°F / -1.0°C 75% 29.98 in / 1015.1 hPa 10.0 miles / 16.1 kilometers South 8.1 mph / 13.0 km/h 17.3 mph / 27.8 km/h N/A   Overcast
7:53 PM 36.0°F / 2.2°C 30.0°F / -1.1°C 79% 30.01 in / 1016.2 hPa 10.0 miles / 16.1 kilometers South 10.4 mph / 16.7 km/h - N/A   Overcast
8:53 PM 36.0°F / 2.2°C 28.9°F / -1.7°C 76% 30.01 in / 1016.1 hPa 10.0 miles / 16.1 kilometers South 9.2 mph / 14.8 km/h - N/A   Overcast
9:23 PM 35.6°F / 2.0°C 28.4°F / -2.0°C 75% 29.98 in / 1015.1 hPa 10.0 miles / 16.1 kilometers South 10.4 mph / 16.7 km/h - N/A   Overcast
9:53 PM 36.0°F / 2.2°C 28.0°F / -2.2°C 73% 30.01 in / 1016.1 hPa 10.0 miles / 16.1 kilometers South 9.2 mph / 14.8 km/h - N/A   Mostly Cloudy
10:53 PM 36.0°F / 2.2°C 28.0°F / -2.2°C 73% 30.00 in / 1015.9 hPa 10.0 miles / 16.1 kilometers SE 6.9 mph / 11.1 km/h - N/A   Mostly Cloudy
11:53 PM 35.1°F / 1.7°C 27.0°F / -2.8°C 72% 29.99 in / 1015.4 hPa 10.0 miles / 16.1 kilometers SE 6.9 mph / 11.1 km/h - N/A   Overcast
Moon Phase
Dec. 18 Dec. 20 Dec. 28 Jan. 04 Jan. 11
Sunrise:07:52 AM (PST) Moon Rise:11:12 AM (PST)12/18
Sunset:04:19 PM (PST) Moon Set:11:16 PM (PST)12/18

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