Weather History for Seattle, WA

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Monday, October 17, 2011

  Actual Average Record
Temperature  
Mean Temperature 52 °F 52 °F  
Max Temperature 61 °F 59 °F 74 °F (1989)
Min Temperature 42 °F 46 °F 34 °F (1949)
Degree Days  
Heating Degree Days 13 13  
Month to date heating degree days 193 176  
Since 1 July heating degree days 344 393  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 148 189  
Growing Degree Days 1 (Base 50)    
Moisture  
Dew Point 43 °F    
Average Humidity 76    
Maximum Humidity 96    
Minimum Humidity 55    
Precipitation  
Precipitation 0.00 in 0.11 in 1.24 in (2009)
Month to date precipitation 2.07 1.50  
Year to date precipitation 27.62 23.59  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.40 in    
Wind  
Wind Speed 6 mph (North)    
Max Wind Speed 15 mph    
Max Gust Speed 18 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Oct. 17, 2011 Rise Set
Actual Time 7:30 AM PDT 6:17 PM PDT
Civil Twilight 6:59 AM PDT 6:48 PM PDT
Nautical Twilight 6:23 AM PDT 7:24 PM PDT
Astronomical Twilight 5:48 AM PDT 8:00 PM PDT
Moon 9:47 PM PDT (10/17) 12:58 PM PDT (10/17)
Length of Visible Light 11h 49m
Length of Day
10h 47m
Waning Gibbous, 73% of the Moon is Illuminated
Oct 17
Waning Gibbous
Oct 19
Last Quarter
Oct 26
New
Nov 2
First Quarter
Nov 10
Full

Hourly Weather History & Observations

Time (PDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 44.1 °F 42.5 °F 41.0 °F 89% 30.36 in 6.0 mi NW 3.5 mph - N/A   Mostly Cloudy
1:53 AM 44.1 °F - 42.1 °F 93% 30.38 in 6.0 mi Calm Calm - N/A   Mostly Cloudy
2:28 AM 42.8 °F - 39.2 °F 87% 30.36 in 8.0 mi Calm Calm - N/A   Scattered Clouds
2:53 AM 42.8 °F - 41.0 °F 93% 30.38 in 6.0 mi Calm Calm - N/A   Mostly Cloudy
3:53 AM 46.0 °F - 42.1 °F 86% 30.42 in 7.0 mi Calm Calm - N/A   Overcast
4:53 AM 44.1 °F 42.5 °F 41.0 °F 89% 30.43 in 10.0 mi ESE 3.5 mph - N/A   Overcast
5:53 AM 45.0 °F - 42.1 °F 90% 30.45 in 6.0 mi Calm Calm - N/A   Overcast
6:53 AM 46.4 °F - 41.0 °F 81% 30.42 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:15 AM 42.8 °F - 39.2 °F 87% 30.42 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:53 AM 43.0 °F 41.3 °F 41.0 °F 93% 30.45 in 10.0 mi East 3.5 mph - N/A   Scattered Clouds
8:53 AM 46.0 °F 44.8 °F 43.0 °F 89% 30.45 in 10.0 mi Variable 3.5 mph - N/A   Partly Cloudy
9:53 AM 48.0 °F - 42.1 °F 80% 30.45 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:53 AM 53.1 °F - 44.1 °F 71% 30.45 in 10.0 mi Variable 4.6 mph - N/A   Partly Cloudy
11:53 AM 55.0 °F - 42.1 °F 62% 30.45 in 10.0 mi North 12.7 mph - N/A   Scattered Clouds
12:53 PM 57.0 °F - 44.1 °F 62% 30.43 in 10.0 mi North 10.4 mph - N/A   Scattered Clouds
1:53 PM 59.0 °F - 45.0 °F 60% 30.42 in 10.0 mi North 10.4 mph - N/A   Mostly Cloudy
2:53 PM 59.0 °F - 45.0 °F 60% 30.40 in 10.0 mi NNW 8.1 mph - N/A   Mostly Cloudy
3:53 PM 60.1 °F - 44.1 °F 55% 30.38 in 10.0 mi North 8.1 mph - N/A   Scattered Clouds
4:53 PM 60.1 °F - 44.1 °F 55% 30.38 in 10.0 mi North 8.1 mph - N/A   Mostly Cloudy
5:53 PM 55.4 °F - 44.6 °F 67% 30.34 in 10.0 mi North 8.1 mph - N/A   Mostly Cloudy
6:53 PM 53.1 °F - 43.0 °F 69% 30.36 in 10.0 mi North 10.4 mph - N/A   Scattered Clouds
7:53 PM 52.0 °F - 43.0 °F 71% 30.36 in 10.0 mi North 9.2 mph - N/A   Scattered Clouds
8:53 PM 52.0 °F - 44.1 °F 74% 30.36 in 10.0 mi North 9.2 mph - N/A   Partly Cloudy
9:53 PM 50.0 °F - 43.0 °F 77% 30.36 in 10.0 mi North 9.2 mph - N/A   Partly Cloudy
10:53 PM 48.2 °F - 42.8 °F 82% 30.32 in 10.0 mi NNW 6.9 mph - N/A   Clear
11:53 PM 48.2 °F - 44.6 °F 87% 30.30 in 10.0 mi North 8.1 mph - N/A   Clear