SEA-TAC, WASHINGTON

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

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DAILY WEATHER AVERAGE - 28 SEPTEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	14.7 ^°C	19.9 ^°C	10.7 ^°C	28.9 ^°C (2003)	5.6 ^°C (1999)
Dewpoint	10.2 ^°C	12.1 ^°C	7.4 ^°C	18.9 ^°C (2003)	-3.9 ^°C (1999)
Humidity	76.4 ^%	94.8 ^%	52.1 ^%		22 ^% (1999)
Barometer	1016.6 ^hPa	1019.6 ^hPa	1013.9 ^hPa	1030.1 ^hPa (2011)	994.9 ^hPa (2013)
Wind Speed	10.9 ^km/h	20.6 ^km/h		38.9 ^km/h (2013)
Wind Gust		40.1 ^km/h		51.8 ^km/h (2013)
Precipitation	22.1 ^mm			83.31 ^mm (2013)

Weather Element	Average
Visibility	15.8 ^km
Wind Direction	SSE (148 °)

Total Years on Record: 21

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