MERCER ISLAND, WASHINGTON

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

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DAILY WEATHER AVERAGE - 25 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	4.8 ^°C	7.7 ^°C	2.5 ^°C	13.9 ^°C (2005)	-3.9 ^°C (1995)
Dewpoint	2.4 ^°C	4.1 ^°C	0.7 ^°C	12 ^°C (2005)	-6 ^°C (2002)
Humidity	85 ^%	95.5 ^%	70.5 ^%		47 ^% (2002)
Barometer	1018.3 ^hPa	1023.4 ^hPa	1012.9 ^hPa	1037.9 ^hPa (1999)	993.2 ^hPa (2008)
Wind Speed	8.9 ^km/h	19.6 ^km/h		44.4 ^km/h (2002)
Wind Gust		43.5 ^km/h		61.2 ^km/h (2011)
Precipitation	12.19 ^mm			39.88 ^mm (2005)

Weather Element	Average
Visibility	14.5 ^km
Wind Direction	ESE (110.8 °)

Weather Element	Total
Heating Degree Days	13.2 (Base 18.3)
Growing Degree Days	1.4 (Base 10)

Total Years on Record: 21

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