MERCER ISLAND, WASHINGTON

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

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DAILY WEATHER AVERAGE - 17 APRIL

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	10.6 ^°C	14.6 ^°C	7.3 ^°C	21.7 ^°C (1999)	3.3 ^°C (2011)
Dewpoint	4.8 ^°C	6.8 ^°C	2.1 ^°C	11 ^°C (2010)	-2.2 ^°C (2015)
Humidity	69.7 ^%	87.3 ^%	47.7 ^%		28 ^% (1998)
Barometer	1018.6 ^hPa	1021.3 ^hPa	1015.9 ^hPa	1031.8 ^hPa (2013)	1005.4 ^hPa (1996)
Wind Speed	10.8 ^km/h	19.6 ^km/h		27.8 ^km/h (2001)
Wind Gust		32.2 ^km/h		37 ^km/h (2005)
Precipitation	5.84 ^mm			20.57 ^mm (2014)

Weather Element	Average
Visibility	19 ^km
Wind Direction	SSE (146.2 °)

Weather Element	Total
Heating Degree Days	7.4 (Base 18.3)
Growing Degree Days	2.4 (Base 10)

Total Years on Record: 21

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