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United States of America

SEA-TAC, WASHINGTON


Home > North America > United States > Washington
Elevation: 450 feet     Latitude: 47 27N     Longitude: 122 18W

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DAILY WEATHER AVERAGE - SEPTEMBER 17
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[ °C ]   °F
Weather ElementAvgAvg HighAvg LowRecord HighRecord Low
Temperature 58.8 °F 66.1 °F 53.7 °F 80.1 °F (2012) 46.9 °F (2003)
Dewpoint 52.1 °F 55.5 °F 48.2 °F 61 °F (2010) 41 °F (2012)
Humidity 80 % 95.2 % 58.2 % 34 % (2012)
Barometer 30.01 in 30.07 in 29.94 in 30.26 in (2009) 29.44 in (1997)
Wind Speed 6.1 mph 11.5 mph 21.9 mph (1997)
Wind Gust 26.5 mph 34.5 mph (1997)
Precipitation 0.33 in 1.41 in (2010)
Weather ElementAverage
Visibility9.5 mi
Wind DirectionSSE (162.9 °)
Weather ElementTotal
Heating Degree Days5.8 (Base 18.3)
Cooling Degree Days1.1 (Base 18.3)
Growing Degree Days9.9 (Base 10)
Total Years on Record: 21
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