MERCER ISLAND, WASHINGTON

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Elevation: 69 meters Latitude: 47 32N Longitude: 122 18W

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DAILY WEATHER AVERAGE - 19 APRIL

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	10.5 ^°C	14.5 ^°C	6.7 ^°C	21.7 ^°C (2010)	2 ^°C (2008)
Dewpoint	4.9 ^°C	6.8 ^°C	2 ^°C	13 ^°C (1997)	-4.4 ^°C (2011)
Humidity	70.7 ^%	87.9 ^%	48.3 ^%		32 ^% (2011)
Barometer	1018.3 ^hPa	1021 ^hPa	1014.9 ^hPa	1030.8 ^hPa (2002)	999.3 ^hPa (1997)
Wind Speed	9.3 ^km/h	19 ^km/h		29.6 ^km/h (1996)
Wind Gust		31.4 ^km/h		44.4 ^km/h (2014)
Precipitation	6.86 ^mm			18.03 ^mm (2013)

Weather Element	Average
Visibility	17.1 ^km
Wind Direction	SSE (143.1 °)

Weather Element	Total
Heating Degree Days	7.7 (Base 18.3)
Growing Degree Days	2.3 (Base 10)

Total Years on Record: 21

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