MERCER ISLAND, WASHINGTON

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

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DAILY WEATHER AVERAGE - 25 FEBRUARY

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	6.4 ^°C	9.8 ^°C	2.8 ^°C	16.1 ^°C (2016)	-5 ^°C (2011)
Dewpoint	1.3 ^°C	3.4 ^°C	-1.9 ^°C	8.3 ^°C (1995)	-14.4 ^°C (2003)
Humidity	72.1 ^%	89.2 ^%	51.1 ^%		18 ^% (2003)
Barometer	1017.6 ^hPa	1022.4 ^hPa	1013.2 ^hPa	1040 ^hPa (2002)	992.9 ^hPa (2004)
Wind Speed	9.5 ^km/h	20.9 ^km/h		38.9 ^km/h (2004)
Wind Gust		42.6 ^km/h		59.2 ^km/h (2004)
Precipitation	3.3 ^mm			9.65 ^mm (2009)

Weather Element	Average
Visibility	15.9 ^km
Wind Direction	ESE (122.1 °)

Weather Element	Total
Heating Degree Days	12.1 (Base 18.3)
Growing Degree Days	0.6 (Base 10)

Total Years on Record: 20

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