Weather History for Seattle, WA

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Friday, August 30, 2013

  Actual Average Record
Temperature  
Mean Temperature 70 °F 65 °F  
Max Temperature 79 °F 75 °F 88 °F (1987)
Min Temperature 61 °F 55 °F 45 °F (1950)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 6 33  
Since 1 June heating degree days 64 226  
Since 1 July heating degree days 15 82  
Cooling Degree Days 5 1  
Month to date cooling degree days 150 73  
Year to date cooling degree days 325 171  
Since 1 June cooling degree days 312 165  
Growing Degree Days 20 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 65    
Maximum Humidity 90    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.04 in 0.37 in (1975)
Month to date precipitation 1.35 0.84  
Year to date precipitation 19.40 20.55  
Sea Level Pressure  
Sea Level Pressure 30.14 in    
Wind  
Wind Speed 6 mph (SW)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 30, 2013 Rise Set
Actual Time 6:25 AM PDT 7:52 PM PDT
Civil Twilight 5:53 AM PDT 8:24 PM PDT
Nautical Twilight 5:15 AM PDT 9:03 PM PDT
Astronomical Twilight 4:33 AM PDT 9:44 PM PDT
Moon 12:56 AM PDT (8/30) 4:24 PM PDT (8/30)
Length of Visible Light 14h 30m
Length of Day
13h 26m
Waning Crescent, 28% of the Moon is Illuminated
Aug 30
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:40 AM 64.4 °F 60.8 °F 88% 30.06 in 10.0 mi SW 5.8 mph - N/A   Overcast
12:53 AM 64.9 °F 61.0 °F 87% 30.08 in 10.0 mi SSW 6.9 mph - N/A   Overcast
1:42 AM 64.4 °F 60.8 °F 88% 30.07 in 10.0 mi SSW 6.9 mph - N/A   Overcast
1:53 AM 64.9 °F 60.1 °F 84% 30.08 in 10.0 mi SSW 4.6 mph - N/A   Overcast
2:53 AM 64.9 °F 59.0 °F 81% 30.09 in 10.0 mi SSW 6.9 mph - N/A   Overcast
3:53 AM 64.9 °F 57.9 °F 78% 30.12 in 10.0 mi SW 6.9 mph - N/A   Overcast
4:53 AM 64.0 °F 57.0 °F 78% 30.12 in 10.0 mi SW 6.9 mph - N/A   Mostly Cloudy
5:53 AM 62.1 °F 57.0 °F 84% 30.14 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
6:53 AM 61.0 °F 57.0 °F 87% 30.15 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
7:53 AM 64.0 °F 59.0 °F 84% 30.16 in 10.0 mi South 9.2 mph - N/A   Scattered Clouds
8:37 AM 64.4 °F 59.0 °F 83% 30.15 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
8:53 AM 66.9 °F 61.0 °F 81% 30.17 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
9:53 AM 68.0 °F 57.0 °F 68% 30.18 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
10:53 AM 70.0 °F 57.0 °F 63% 30.19 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
11:53 AM 72.0 °F 55.0 °F 55% 30.19 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
12:53 PM 73.9 °F 53.1 °F 48% 30.19 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
1:53 PM 75.0 °F 52.0 °F 44% 30.18 in 10.0 mi SW 5.8 mph - 0.00 in   Mostly Cloudy
2:53 PM 77.0 °F 51.1 °F 40% 30.17 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
3:53 PM 77.0 °F 51.1 °F 40% 30.16 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:53 PM 78.1 °F 51.1 °F 39% 30.15 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
5:53 PM 77.0 °F 50.0 °F 39% 30.14 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:53 PM 77.0 °F 51.1 °F 40% 30.12 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds
7:53 PM 70.0 °F 53.1 °F 55% 30.12 in 10.0 mi NNW 8.1 mph - N/A   Scattered Clouds
8:53 PM 66.9 °F 51.1 °F 57% 30.13 in 10.0 mi NNW 8.1 mph - N/A   Partly Cloudy
9:53 PM 64.0 °F 53.1 °F 67% 30.12 in 10.0 mi North 6.9 mph - N/A   Clear
10:53 PM 64.9 °F 54.0 °F 68% 30.12 in 10.0 mi NNW 9.2 mph - N/A   Clear
11:53 PM 62.1 °F 53.1 °F 72% 30.11 in 10.0 mi North 6.9 mph - N/A   Clear