SEA-TAC, WASHINGTON

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Elevation: 137 meters Latitude: 47 27N Longitude: 122 18W

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DAILY WEATHER AVERAGE - 26 APRIL

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	10.9 ^°C	15.9 ^°C	7 ^°C	24.4 ^°C (2004)	3.3 ^°C (2008)
Dewpoint	5.6 ^°C	7.7 ^°C	3.4 ^°C	11.7 ^°C (2005)	-3.3 ^°C (2008)
Humidity	72.3 ^%	92.1 ^%	47.7 ^%		21 ^% (2008)
Barometer	1018.3 ^hPa	1021.7 ^hPa	1014.9 ^hPa	1030.8 ^hPa (2008)	996.6 ^hPa (2010)
Wind Speed	11.4 ^km/h	20.6 ^km/h		31.5 ^km/h (2012)
Wind Gust		34.9 ^km/h		40.7 ^km/h (2012)
Precipitation	4.32 ^mm			12.19 ^mm (1997)

Weather Element	Average
Visibility	16.7 ^km
Wind Direction	S (174.7 °)

Weather Element	Total
Heating Degree Days	6.9 (Base 18.3)
Growing Degree Days	3.7 (Base 10)

Total Years on Record: 21

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