Weather History for Seattle, WA

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Sunday, August 17, 2014

  Actual Average Record
Temperature  
Mean Temperature 71 °F 66 °F  
Max Temperature 82 °F 76 °F 96 °F (1977)
Min Temperature 59 °F 56 °F 45 °F (1951)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 0 17  
Since 1 June heating degree days 108 210  
Since 1 July heating degree days 14 66  
Cooling Degree Days 6 2  
Month to date cooling degree days 98 48  
Year to date cooling degree days 276 146  
Since 1 June cooling degree days 261 140  
Growing Degree Days 20 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 68    
Maximum Humidity 90    
Minimum Humidity 45    
Precipitation  
Precipitation 0.00 in 0.03 in 0.93 in (1995)
Month to date precipitation 1.43 0.40  
Year to date precipitation 29.51 20.11  
Sea Level Pressure  
Sea Level Pressure 30.12 in    
Wind  
Wind Speed 6 mph (NNW)    
Max Wind Speed 13 mph    
Max Gust Speed 39 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 17, 2014 Rise Set
Actual Time 6:08 AM PDT 8:17 PM PDT
Civil Twilight 5:34 AM PDT 8:50 PM PDT
Nautical Twilight 4:53 AM PDT 9:32 PM PDT
Astronomical Twilight 4:06 AM PDT 10:18 PM PDT
Moon No Moon Rise 2:32 PM PDT (8/17)
Length of Visible Light 15h 16m
Length of Day
14h 09m
Waning Gibbous, 47% of the Moon is Illuminated
Aug 17
Waning Gibbous
Aug 25
New
Sep 2
First Quarter
Sep 8
Full
Sep 15
Last Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 63.0 °F - 57.9 °F 84% 30.12 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:53 AM 62.1 °F - 57.9 °F 86% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:53 AM 61.0 °F - 57.0 °F 87% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:53 AM 64.0 °F - 59.0 °F 84% 30.13 in 10.0 mi North 3.5 mph - N/A   Mostly Cloudy
4:53 AM 64.0 °F - 57.9 °F 80% 30.12 in 10.0 mi NNE 5.8 mph - N/A   Mostly Cloudy
5:53 AM 60.1 °F - 57.0 °F 90% 30.13 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:53 AM 59.0 °F - 55.9 °F 90% 30.14 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
7:53 AM 62.1 °F - 57.9 °F 86% 30.15 in 10.0 mi NW 3.5 mph - N/A   Partly Cloudy
8:53 AM 66.9 °F - 59.0 °F 76% 30.15 in 10.0 mi NE 8.1 mph - N/A   Partly Cloudy
9:53 AM 70.0 °F - 57.9 °F 65% 30.16 in 10.0 mi NNW 8.1 mph - N/A   Partly Cloudy
10:53 AM 70.0 °F - 57.9 °F 65% 30.16 in 10.0 mi NW 5.8 mph - N/A   Partly Cloudy
11:53 AM 73.0 °F - 59.0 °F 61% 30.15 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
12:53 PM 73.9 °F - 59.0 °F 59% 30.14 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
1:53 PM 77.0 °F - 59.0 °F 54% 30.14 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
3:53 PM 79.0 °F - 57.9 °F 48% 30.12 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
4:53 PM 80.1 °F 80.7 °F 59.0 °F 48% 30.11 in 10.0 mi NW 10.4 mph - N/A   Partly Cloudy
5:53 PM 80.1 °F 80.4 °F 57.0 °F 45% 30.09 in 10.0 mi NNW 9.2 mph - N/A   Partly Cloudy
6:53 PM 78.1 °F - 55.9 °F 46% 30.08 in 10.0 mi North 9.2 mph - N/A   Partly Cloudy
7:53 PM 75.0 °F - 57.0 °F 53% 30.08 in 10.0 mi North 8.1 mph - N/A   Partly Cloudy
8:53 PM 71.1 °F - 57.9 °F 63% 30.07 in 10.0 mi North 8.1 mph - N/A   Clear
9:53 PM 69.1 °F - 57.0 °F 65% 30.07 in 10.0 mi North 4.6 mph - N/A   Clear
10:53 PM 69.1 °F - 57.9 °F 68% 30.07 in 10.0 mi North 8.1 mph - N/A   Clear
11:53 PM 66.9 °F - 59.0 °F 76% 30.07 in 10.0 mi North 6.9 mph - N/A   Clear