RIVERHEAD, NEW YORK

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Elevation: 20 meters Latitude: 40 50N Longitude: 072 37W

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DAILY WEATHER AVERAGE - 15 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	3.3 ^°C	7.8 ^°C	-1.9 ^°C	16.7 ^°C (2015)	(2014)
Dewpoint	-1.1 ^°C	3.8 ^°C	-4.9 ^°C	16.1 ^°C (2015)	-18.9 ^°C (2007)
Humidity	73.4 ^%	88.5 ^%	56.5 ^%		32 ^% (2007)
Barometer	1017.6 ^hPa	1022.4 ^hPa	1012.9 ^hPa	1036.2 ^hPa (2000)	993.6 ^hPa (2003)
Wind Speed	15.8 ^km/h	28 ^km/h		50.1 ^km/h (2003)
Wind Gust		44.6 ^km/h		68.6 ^km/h (2003)
Precipitation	18.29 ^mm			80.26 ^mm (2013)

Weather Element	Average
Visibility	13.8 ^km
Wind Direction	S (183.2 °)

Weather Element	Total
Heating Degree Days	15.4 (Base 18.3)
Growing Degree Days	1.9 (Base 10)

Total Years on Record: 21

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