Seattle, WA

7:54 AM PDT on June 23, 2018 (GMT -0700)
Seattle-Tacoma International

Weather History for KSEA - October, 2009

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Tuesday, October 20, 2009

  Actual Average Record
Temperature  
Mean Temperature 50 °F 52 °F  
Max Temperature 56 °F 58 °F 69 °F (1987)
Min Temperature 43 °F 45 °F 29 °F (1949)
Degree Days  
Heating Degree Days 15 13  
Month to date heating degree days 218 215  
Since 1 July heating degree days 382 432  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 314 189  
Moisture  
Dew Point 46 °F    
Average Humidity 86    
Maximum Humidity 100    
Minimum Humidity 72    
Precipitation  
Precipitation 0.00 in 0.12 in 5.02 in (2003)
Month to date precipitation 3.08 1.85  
Year to date precipitation 24.27 23.94  
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 30.11 in    
Wind  
Wind Speed 3 mph (SSE)    
Max Wind Speed 10 mph    
Max Gust Speed 12 mph    
Visibility 4 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Oct. 20, 2009 Rise Set
Actual Time 7:35 AM PDT 6:11 PM PDT
Civil Twilight 7:04 AM PDT 6:42 PM PDT
Nautical Twilight 6:28 AM PDT 7:18 PM PDT
Astronomical Twilight 5:53 AM PDT 7:53 PM PDT
Moon 10:48 AM PDT (10/20) 7:09 PM PDT (10/20)
Length of Visible Light 11h 38m
Length of Day
10h 35m
Waxing Crescent, 7% of the Moon is Illuminated
Oct 20
Waxing Crescent
Oct 25
First Quarter
Nov 2
Full
Nov 9
Last Quarter
Nov 16
New

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 48.0 °F - 46.0 °F 93% 30.12 in 8.0 mi Calm Calm - N/A   Scattered Clouds
1:47 AM 46.4 °F 45.2 °F 46.4 °F 100% 30.10 in 7.0 mi SE 3.5 mph - N/A   Mostly Cloudy
1:53 AM 46.4 °F - 46.4 °F 100% 30.13 in 6.0 mi Calm Calm - N/A   Mostly Cloudy
2:15 AM 46.4 °F 45.2 °F 46.4 °F 100% 30.10 in 1.2 mi South 3.5 mph - N/A   Overcast
2:32 AM 46.4 °F - 46.4 °F 100% 30.10 in 1.5 mi Calm Calm - N/A   Overcast
2:46 AM 48.2 °F - 46.4 °F 93% 30.11 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
2:53 AM 46.4 °F - 46.4 °F 100% 30.13 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
3:30 AM 46.4 °F - 44.6 °F 93% 30.10 in 2.0 mi Calm Calm - N/A   Partly Cloudy
3:47 AM 46.4 °F - 44.6 °F 93% 30.10 in 1.5 mi Calm Calm - N/A   Scattered Clouds
3:53 AM 44.6 °F - 44.6 °F 100% 30.12 in 1.5 mi Calm Calm - N/A   Scattered Clouds
4:21 AM 44.6 °F - 42.8 °F 93% 30.10 in 2.5 mi Calm Calm - N/A   Scattered Clouds
4:34 AM 44.6 °F - 44.6 °F 100% 30.11 in 2.5 mi Calm Calm - N/A   Partly Cloudy
4:43 AM 44.6 °F - 44.6 °F 100% 30.11 in 3.0 mi Calm Calm - N/A   Partly Cloudy
4:53 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.13 in 3.0 mi ESE 3.5 mph - N/A   Partly Cloudy
5:53 AM 46.4 °F 43.5 °F 44.6 °F 93% 30.14 in 7.0 mi ESE 5.8 mph - N/A   Partly Cloudy
6:53 AM 44.6 °F 42.2 °F 42.8 °F 93% 30.14 in 7.0 mi ESE 4.6 mph - N/A   Scattered Clouds
7:11 AM 44.6 °F 42.2 °F 44.6 °F 100% 30.11 in 0.1 mi ESE 4.6 mph - N/A   Mostly Cloudy
7:39 AM 44.6 °F 43.1 °F 44.6 °F 100% 30.12 in 0.1 mi SW 3.5 mph - N/A Fog Fog
7:53 AM 44.1 °F - 44.1 °F 100% 30.14 in 0.1 mi Calm Calm - N/A Fog Fog
8:10 AM 44.6 °F - 44.6 °F 100% 30.11 in 0.1 mi Calm Calm - N/A Fog Fog
8:19 AM 46.4 °F - 44.6 °F 93% 30.12 in 0.5 mi Calm Calm - N/A   Overcast
8:42 AM 46.4 °F 45.2 °F 46.4 °F 100% 30.12 in 0.5 mi SSE 3.5 mph - N/A Fog Fog
8:53 AM 46.9 °F - 46.0 °F 97% 30.15 in 0.5 mi South 3.5 mph - N/A Fog Fog
9:24 AM 46.4 °F - 46.4 °F 100% 30.13 in 0.8 mi Calm Calm - N/A   Overcast
9:44 AM 48.2 °F - 46.4 °F 93% 30.12 in 1.0 mi Calm Calm - N/A   Mostly Cloudy
9:53 AM 48.0 °F - 46.9 °F 96% 30.15 in 1.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
9:59 AM 48.2 °F - 46.4 °F 93% 30.12 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
10:53 AM 48.9 °F - 48.0 °F 97% 30.14 in 2.0 mi Calm Calm - N/A   Overcast
11:04 AM 48.2 °F - 48.2 °F 100% 30.12 in 1.0 mi Calm Calm - N/A   Overcast
11:06 AM 48.2 °F - 48.2 °F 100% 30.12 in 0.2 mi West 3.5 mph - N/A   Overcast
11:08 AM 48.2 °F - 48.2 °F 100% 30.12 in 0.2 mi West 4.6 mph - N/A   Overcast
11:18 AM 48.2 °F - 48.2 °F 100% 30.12 in 0.2 mi WNW 4.6 mph - N/A Fog Fog
11:53 AM 48.9 °F - 48.0 °F 97% 30.15 in 0.2 mi Calm Calm - N/A   Overcast
12:30 PM 50.0 °F - 48.2 °F 94% 30.11 in 1.2 mi Calm Calm - N/A   Overcast
12:53 PM 50.0 °F - 48.9 °F 96% 30.13 in 1.2 mi Calm Calm - N/A   Overcast
1:12 PM 50.0 °F - 48.2 °F 94% 30.11 in 1.5 mi Calm Calm - N/A   Overcast
1:33 PM 51.8 °F - 48.2 °F 88% 30.10 in 4.0 mi West 3.5 mph - N/A   Mostly Cloudy
1:53 PM 53.1 °F - 48.0 °F 83% 30.12 in 7.0 mi West 3.5 mph - N/A   Mostly Cloudy
2:53 PM 54.0 °F - 48.0 °F 80% 30.11 in 7.0 mi WSW 3.5 mph - N/A   Overcast
3:53 PM 54.0 °F - 48.0 °F 80% 30.10 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
4:53 PM 55.4 °F - 46.4 °F 72% 30.06 in 9.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
5:53 PM 55.9 °F - 48.0 °F 75% 30.07 in 9.0 mi ESE 3.5 mph - N/A   Mostly Cloudy
6:53 PM 55.9 °F - 48.0 °F 75% 30.06 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
7:53 PM 54.0 °F - 48.0 °F 80% 30.05 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
8:53 PM 53.1 °F - 48.0 °F 83% 30.03 in 10.0 mi SSE 4.6 mph - N/A   Overcast
9:53 PM 53.1 °F - 48.0 °F 83% 30.03 in 10.0 mi Calm Calm - N/A   Overcast
10:53 PM 54.0 °F - 48.0 °F 80% 30.02 in 10.0 mi SE 6.9 mph - N/A   Overcast
11:53 PM 54.0 °F - 46.9 °F 77% 29.99 in 10.0 mi ESE 9.2 mph - N/A   Mostly Cloudy