Seatac, WA

5:50 AM PST on February 11, 2016 (GMT -0800)
Seattle-Tacoma International

Weather History for KSEA - August, 2013

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Week of August 18, 2013 through August 24, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 84 °F 80 °F 77 °F
Mean Temperature 72 °F 70 °F 69 °F
Min Temperature 62 °F 60 °F 59 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 7 5 4 37
Growing Degree Days (base 50) 22 20 20 142
Dew Point  
Dew Point 56 °F 52 °F 45 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 17 mph 8 mph 0 mph
Gust Wind 23 mph 19 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.20 in 30.03 in 29.84 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Aug. 18, 2013 Rise Set
Actual Time 6:09 AM PDT 8:15 PM PDT
Civil Twilight 5:36 AM PDT 8:48 PM PDT
Nautical Twilight 4:55 AM PDT 9:29 PM PDT
Astronomical Twilight 4:08 AM PDT 10:15 PM PDT
Moon 6:29 PM PDT (8/18) 3:19 AM PDT (8/18)
Length of Visible Light 15h 11m
Length of Day
14h 05m
Waxing Gibbous, 93% of the Moon is Illuminated
Aug 18
Waxing Gibbous
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Aug high avg low high avg low high avg low high avg low high avg low high avg high sum  
18 79 70 60 56 54 50 78 62 45 30.17 30.13 30.11 10 10 10 14 7 18 0.00  
19 80 70 60 55 53 49 84 64 43 30.15 30.12 30.10 10 10 10 17 7 21 0.00  
20 78 70 61 52 48 45 65 48 31 30.20 30.15 30.11 10 10 10 16 10 21 0.00  
21 82 71 59 52 50 47 64 49 33 30.12 30.05 29.97 10 10 10 14 10 20 0.00  
22 84 72 59 53 51 49 69 52 34 29.97 29.91 29.84 10 10 10 12 4 15 0.00  
23 77 69 61 55 54 52 78 62 46 29.93 29.91 29.87 10 10 10 17 9 23 T Rain
24 77 70 62 56 53 46 78 57 36 29.95 29.93 29.89 10 10 10 12 6 16 0.00