Weather History for Seattle, WA

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Saturday, September 29, 2012

  Actual Average Record
Temperature  
Mean Temperature 62 °F 58 °F  
Max Temperature 69 °F 66 °F 81 °F (1992)
Min Temperature 54 °F 49 °F 37 °F (1954)
Degree Days  
Heating Degree Days 3 7  
Month to date heating degree days 82 123  
Since 1 July heating degree days 146 208  
Cooling Degree Days 0 0  
Month to date cooling degree days 28 19  
Year to date cooling degree days 177 187  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 63    
Maximum Humidity 86    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.06 in 0.92 in (1951)
Month to date precipitation 0.03 1.43  
Year to date precipitation 26.42 22.02  
Sea Level Pressure  
Sea Level Pressure 30.19 in    
Wind  
Wind Speed 10 mph (NNE)    
Max Wind Speed 18 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 29, 2012 Rise Set
Actual Time 7:06 AM PDT 6:51 PM PDT
Civil Twilight 6:35 AM PDT 7:22 PM PDT
Nautical Twilight 5:59 AM PDT 7:57 PM PDT
Astronomical Twilight 5:23 AM PDT 8:33 PM PDT
Moon 6:23 PM PDT (9/29) 6:44 AM PDT (9/29)
Length of Visible Light 12h 46m
Length of Day
11h 45m
Full, 100% of the Moon is Illuminated
Sep 29
Full
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 57.9 °F 54.0 °F 87% 30.06 in 10.0 mi WNW 3.5 mph - N/A   Mostly Cloudy
1:03 AM 57.2 °F 53.6 °F 88% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:12 AM 57.2 °F 53.6 °F 88% 30.06 in 10.0 mi West 3.5 mph - N/A   Mostly Cloudy
1:53 AM 59.0 °F 54.0 °F 83% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
2:53 AM 62.1 °F 55.0 °F 78% 30.10 in 10.0 mi NNE 4.6 mph - N/A   Overcast
3:31 AM 60.8 °F 55.4 °F 82% 30.09 in 10.0 mi NE 6.9 mph - N/A   Overcast
3:53 AM 61.0 °F 54.0 °F 78% 30.11 in 10.0 mi NE 6.9 mph - N/A   Overcast
4:53 AM 60.1 °F 50.0 °F 69% 30.12 in 10.0 mi NE 10.4 mph - N/A   Overcast
5:18 AM 60.8 °F 46.4 °F 59% 30.11 in 10.0 mi NE 10.4 mph - N/A   Overcast
5:53 AM 59.0 °F 45.0 °F 60% 30.13 in 10.0 mi NNE 13.8 mph - N/A   Overcast
6:53 AM 59.0 °F 45.0 °F 60% 30.15 in 10.0 mi NE 13.8 mph - N/A   Overcast
7:53 AM 59.0 °F 45.0 °F 60% 30.17 in 10.0 mi NNE 13.8 mph - N/A   Overcast
8:53 AM 59.0 °F 44.1 °F 58% 30.19 in 10.0 mi NNE 15.0 mph - N/A   Overcast
9:53 AM 59.0 °F 45.0 °F 60% 30.22 in 10.0 mi North 6.9 mph - N/A   Overcast
10:53 AM 61.0 °F 42.1 °F 50% 30.24 in 10.0 mi NNE 8.1 mph - N/A   Overcast
11:53 AM 63.0 °F 43.0 °F 48% 30.24 in 10.0 mi NNE 6.9 mph 17.3 mph N/A   Mostly Cloudy
12:53 PM 64.0 °F 44.1 °F 48% 30.25 in 10.0 mi Variable 6.9 mph - N/A   Mostly Cloudy
1:53 PM 66.0 °F 42.1 °F 42% 30.24 in 10.0 mi NNE 6.9 mph - N/A   Mostly Cloudy
2:53 PM 64.9 °F 43.0 °F 45% 30.23 in 10.0 mi North 5.8 mph - N/A   Mostly Cloudy
3:53 PM 68.0 °F 42.1 °F 39% 30.24 in 10.0 mi NNW 10.4 mph - N/A   Scattered Clouds
4:53 PM 66.9 °F 44.1 °F 44% 30.25 in 10.0 mi NNW 9.2 mph - N/A   Partly Cloudy
5:53 PM 64.9 °F 46.9 °F 52% 30.25 in 10.0 mi North 9.2 mph - N/A   Scattered Clouds
6:53 PM 60.8 °F 42.8 °F 52% 30.24 in 10.0 mi North 9.2 mph - N/A   Scattered Clouds
7:53 PM 57.0 °F 43.0 °F 59% 30.27 in 10.0 mi North 9.2 mph - N/A   Partly Cloudy
8:53 PM 57.0 °F 46.9 °F 69% 30.29 in 10.0 mi North 11.5 mph - N/A   Partly Cloudy
9:53 PM 57.0 °F 48.0 °F 72% 30.30 in 10.0 mi NNE 13.8 mph - N/A   Scattered Clouds
10:53 PM 55.9 °F 44.1 °F 64% 30.31 in 10.0 mi NE 11.5 mph - N/A   Mostly Cloudy
11:53 PM 55.0 °F 43.0 °F 64% 30.31 in 10.0 mi NE 15.0 mph - N/A   Mostly Cloudy