SEA-TAC, WASHINGTON

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

WEATHER

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DAILY WEATHER AVERAGE - APRIL 20

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	50.4 ^°F	58.4 ^°F	43.3 ^°F	73 ^°F (2015)	34 ^°F (2008)
Dewpoint	40.5 ^°F	44.4 ^°F	36.5 ^°F	54 ^°F (1997)	26.1 ^°F (2009)
Humidity	71.1 ^%	90.5 ^%	48.5 ^%		28 ^% (2009)
Barometer	30.05 ⁱⁿ	30.14 ⁱⁿ	29.96 ⁱⁿ	30.32 ⁱⁿ (2009)	29.51 ⁱⁿ (1997)
Wind Speed	7 ^mph	12.7 ^mph		23 ^mph (1997)
Wind Gust		22.1 ^mph		35.7 ^mph (1997)
Precipitation	0.15 ⁱⁿ			0.44 ⁱⁿ (2012)

Weather Element	Average
Visibility	11.1 ^mi
Wind Direction	SSE (162.4 °)

Weather Element	Total
Heating Degree Days	14.1 (Base 18.3)
Growing Degree Days	3.7 (Base 10)

Total Years on Record: 21

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