SEA-TAC, WASHINGTON

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

WEATHER

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DAILY WEATHER AVERAGE - 20 APRIL

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	10.2 ^°C	14.7 ^°C	6.3 ^°C	22.8 ^°C (2015)	1.1 ^°C (2008)
Dewpoint	4.7 ^°C	6.9 ^°C	2.5 ^°C	12.2 ^°C (1997)	-3.3 ^°C (2009)
Humidity	71.1 ^%	90.5 ^%	48.5 ^%		28 ^% (2009)
Barometer	1017.6 ^hPa	1020.7 ^hPa	1014.6 ^hPa	1026.8 ^hPa (2009)	999.3 ^hPa (1997)
Wind Speed	11.3 ^km/h	20.4 ^km/h		37 ^km/h (1997)
Wind Gust		35.6 ^km/h		57.5 ^km/h (1997)
Precipitation	3.81 ^mm			11.18 ^mm (2012)

Weather Element	Average
Visibility	17.9 ^km
Wind Direction	SSE (162.4 °)

Weather Element	Total
Heating Degree Days	7.8 (Base 18.3)
Growing Degree Days	2.1 (Base 10)

Total Years on Record: 21

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