SEA-TAC, WASHINGTON

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Elevation: 450 feet Latitude: 47 27N Longitude: 122 18W

WEATHER

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DAILY WEATHER AVERAGE - DECEMBER 1

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	42.3 ^°F	46.6 ^°F	38.3 ^°F	55.9 ^°F (2013)	27 ^°F (2014)
Dewpoint	37.3 ^°F	40.9 ^°F	33 ^°F	50 ^°F (2008)	12 ^°F (2014)
Humidity	83.4 ^%	95.9 ^%	66.8 ^%		47 ^% (2000)
Barometer	30.00 ⁱⁿ	30.13 ⁱⁿ	29.87 ⁱⁿ	30.81 ⁱⁿ (2011)	29.13 ⁱⁿ (2001)
Wind Speed	9 ^mph	16.2 ^mph		31.1 ^mph (2001)
Wind Gust		29.2 ^mph		41.4 ^mph (2001)
Precipitation	0.31 ⁱⁿ			0.71 ⁱⁿ (1998)

Weather Element	Average
Visibility	8.2 ^mi
Wind Direction	SE (138.7 °)

Weather Element	Total
Heating Degree Days	22.6 (Base 18.3)
Growing Degree Days	1.3 (Base 10)

Total Years on Record: 21

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