Weather History for Seattle, WA

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Friday, February 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 45 °F 43 °F  
Max Temperature 50 °F 50 °F 58 °F (2007)
Min Temperature 40 °F 37 °F 23 °F (1990)
Degree Days  
Heating Degree Days 20 22  
Month to date heating degree days 334 374  
Since 1 July heating degree days 3095 3023  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 41 °F    
Average Humidity 87    
Maximum Humidity 100    
Minimum Humidity 74    
Precipitation  
Precipitation 0.68 in 0.12 in 0.68 in (2012)
Month to date precipitation 2.22 2.18  
Year to date precipitation 9.05 7.75  
Snow  
Snow 0.00 in - 6.30 in (1990)
Month to date snowfall 0.0  
Since 1 July snowfall 9.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 8 mph (SSE)    
Max Wind Speed 25 mph    
Max Gust Speed 36 mph    
Visibility 5 miles    
Events Fog , Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 17, 2012 Rise Set
Actual Time 7:11 AM PST 5:35 PM PST
Civil Twilight 6:40 AM PST 6:06 PM PST
Nautical Twilight 6:04 AM PST 6:42 PM PST
Astronomical Twilight 5:29 AM PST 7:18 PM PST
Moon 4:21 AM PST (2/17) 1:21 PM PST (2/17)
Length of Visible Light 11h 26m
Length of Day
10h 23m
Waning Crescent, 18% of the Moon is Illuminated
Feb 17
Waning Crescent
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Mar 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
12:53 AM 43.0 °F 40.3 °F 42.1 °F 97% 30.28 in 1.8 mi South 4.6 mph - N/A   Overcast
1:53 AM 43.0 °F 39.5 °F 42.1 °F 97% 30.27 in 1.8 mi SSE 5.8 mph - N/A   Overcast
2:32 AM 42.8 °F 38.6 °F 42.8 °F 100% 30.23 in 1.0 mi ESE 6.9 mph - N/A   Overcast
2:39 AM 42.8 °F 39.3 °F 42.8 °F 100% 30.23 in 0.5 mi ESE 5.8 mph - N/A Fog Fog
2:53 AM 43.0 °F 39.5 °F 42.1 °F 97% 30.25 in 1.0 mi East 5.8 mph - N/A Fog Overcast
3:10 AM 42.8 °F 38.6 °F 42.8 °F 100% 30.22 in 1.5 mi East 6.9 mph - N/A Fog Overcast
3:22 AM 42.8 °F 38.6 °F 42.8 °F 100% 30.22 in 2.0 mi East 6.9 mph - N/A Fog Overcast
3:29 AM 42.8 °F 38.6 °F 42.8 °F 100% 30.21 in 1.5 mi ENE 6.9 mph - N/A Fog Overcast
3:35 AM 42.8 °F 38.6 °F 42.8 °F 100% 30.21 in 1.0 mi ENE 6.9 mph - N/A Fog Overcast
3:47 AM 42.8 °F 41.1 °F 41.0 °F 93% 30.20 in 0.5 mi NE 3.5 mph - N/A Fog Fog
3:50 AM 42.8 °F 41.1 °F 41.0 °F 93% 30.20 in 1.0 mi ENE 3.5 mph - N/A Fog Overcast
3:53 AM 42.8 °F 41.1 °F 41.0 °F 93% 30.20 in 1.5 mi ENE 3.5 mph - N/A Fog Overcast
4:05 AM 41.0 °F - 39.2 °F 93% 30.20 in 2.5 mi Calm Calm - N/A Fog Overcast
4:14 AM 42.8 °F - 41.0 °F 93% 30.19 in 4.0 mi Calm Calm - N/A Fog Scattered Clouds
4:53 AM 41.0 °F - 39.2 °F 93% 30.18 in 6.0 mi Calm Calm - N/A   Mostly Cloudy
4:59 AM 39.2 °F - 37.4 °F 93% 30.19 in 1.5 mi Calm Calm - N/A   Clear
5:01 AM 39.2 °F 37.0 °F 37.4 °F 93% 30.19 in 0.8 mi West 3.5 mph - N/A   Mist
5:04 AM 41.0 °F - 39.2 °F 93% 30.19 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
5:08 AM 41.0 °F - 39.2 °F 93% 30.18 in 0.5 mi Calm Calm - N/A Fog Fog
5:13 AM 41.0 °F 38.0 °F 39.2 °F 93% 30.19 in 2.5 mi West 4.6 mph - N/A Fog Mostly Cloudy
5:17 AM 39.2 °F 35.9 °F 39.2 °F 100% 30.19 in 0.5 mi WSW 4.6 mph - N/A Fog Fog
5:19 AM 41.0 °F 37.1 °F 39.2 °F 93% 30.19 in 0.2 mi WSW 5.8 mph - N/A Fog Fog
5:28 AM 42.8 °F 39.3 °F 41.0 °F 93% 30.19 in 0.2 mi West 5.8 mph - N/A Fog Fog
5:35 AM 42.8 °F 41.1 °F 42.8 °F 100% 30.19 in 0.2 mi WSW 3.5 mph - N/A Fog Fog
5:53 AM 42.1 °F - 42.1 °F 100% 30.21 in 0.2 mi Calm Calm - N/A Fog Fog
6:25 AM 42.8 °F 39.3 °F 42.8 °F 100% 30.18 in 0.2 mi SE 5.8 mph - N/A Fog Fog
6:53 AM 42.1 °F 38.4 °F 41.0 °F 96% 30.20 in 0.2 mi SSE 5.8 mph - N/A Fog Fog
7:53 AM 43.0 °F 41.3 °F 42.1 °F 97% 30.19 in 0.2 mi SE 3.5 mph - N/A Fog Fog
8:46 AM 42.8 °F 41.1 °F 42.8 °F 100% 30.15 in 4.0 mi SE 3.5 mph - N/A   Overcast
8:53 AM 43.0 °F 41.3 °F 42.1 °F 97% 30.17 in 4.0 mi SSE 3.5 mph - N/A   Overcast
9:53 AM 44.1 °F 40.1 °F 42.1 °F 93% 30.13 in 10.0 mi SE 6.9 mph - N/A   Overcast
10:53 AM 46.0 °F 43.9 °F 42.1 °F 86% 30.13 in 7.0 mi South 4.6 mph - N/A   Overcast
11:21 AM 46.4 °F - 42.8 °F 87% 30.09 in 7.0 mi Calm Calm - 0.00 in Rain Light Rain
11:53 AM 48.0 °F - 43.0 °F 83% 30.09 in 10.0 mi Calm Calm - 0.00 in   Overcast
12:02 PM 48.2 °F - 42.8 °F 82% 30.05 in 10.0 mi Calm Calm - N/A   Overcast
12:53 PM 50.0 °F - 42.1 °F 74% 30.02 in 10.0 mi ESE 5.8 mph - N/A   Overcast
1:53 PM 50.0 °F - 42.1 °F 74% 29.97 in 10.0 mi WSW 4.6 mph - N/A   Overcast
2:53 PM 48.0 °F - 44.1 °F 86% 29.94 in 4.0 mi SE 10.4 mph - 0.07 in Rain Light Rain
3:53 PM 48.0 °F - 45.0 °F 89% 29.92 in 3.0 mi SSE 9.2 mph - 0.15 in Rain Rain
4:53 PM 46.9 °F - 44.1 °F 90% 29.86 in 10.0 mi ESE 15.0 mph - 0.06 in Rain Light Rain
5:13 PM 46.4 °F 38.7 °F 42.8 °F 87% 29.89 in 3.0 mi WSW 20.7 mph 35.7 mph 0.04 in Rain Rain
5:22 PM 44.6 °F 36.9 °F 41.0 °F 87% 29.89 in 8.0 mi SW 18.4 mph 29.9 mph 0.06 in Rain Light Rain
5:53 PM 43.0 °F 34.5 °F 39.9 °F 89% 29.92 in 10.0 mi SW 19.6 mph 27.6 mph 0.08 in Rain Light Rain
5:59 PM 42.8 °F 35.4 °F 39.2 °F 87% 29.90 in 10.0 mi SW 15.0 mph 27.6 mph 0.00 in Rain Light Rain
6:32 PM 42.8 °F 37.5 °F 39.2 °F 87% 29.92 in 10.0 mi South 9.2 mph 18.4 mph 0.01 in Rain Light Rain
6:53 PM 43.0 °F 36.4 °F 39.9 °F 89% 29.95 in 10.0 mi South 12.7 mph - 0.02 in Rain Light Rain
7:17 PM 42.8 °F 36.6 °F 41.0 °F 93% 29.93 in 7.0 mi SSE 11.5 mph - 0.02 in Rain Light Rain
7:53 PM 42.1 °F - 42.1 °F 100% 29.96 in 4.0 mi Calm Calm - 0.11 in Rain Rain
8:31 PM 42.8 °F 37.0 °F 39.2 °F 87% 29.94 in 3.0 mi South 10.4 mph - 0.09 in Rain Rain
8:53 PM 42.1 °F 34.2 °F 39.0 °F 89% 29.96 in 10.0 mi South 16.1 mph 23.0 mph 0.15 in Rain Light Rain
9:15 PM 42.8 °F 35.4 °F 39.2 °F 87% 29.93 in 10.0 mi South 15.0 mph - 0.00 in Rain Light Rain
9:31 PM 42.8 °F 36.2 °F 39.2 °F 87% 29.93 in 10.0 mi South 12.7 mph 21.9 mph 0.00 in   Overcast
9:53 PM 42.1 °F 34.9 °F 39.9 °F 92% 29.96 in 10.0 mi South 13.8 mph - 0.00 in Rain Light Rain
10:53 PM 42.1 °F 33.6 °F 37.9 °F 85% 29.96 in 9.0 mi South 18.4 mph 25.3 mph 0.04 in Rain Light Rain
11:53 PM 41.0 °F 32.8 °F 37.9 °F 89% 29.96 in 10.0 mi South 16.1 mph 24.2 mph 0.00 in   Overcast