RIVERHEAD, NEW YORK

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

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DAILY WEATHER AVERAGE - 20 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	1.5 ^°C	5.4 ^°C	-3 ^°C	17.2 ^°C (2013)	-11.1 ^°C (2004)
Dewpoint	-4.2 ^°C	-0.4 ^°C	-8.8 ^°C	14 ^°C (2002)	-20 ^°C (2005)
Humidity	70.9 ^%	87.2 ^%	51.1 ^%		31 ^% (2005)
Barometer	1015.6 ^hPa	1020.7 ^hPa	1010.8 ^hPa	1033.5 ^hPa (2015)	993.6 ^hPa (2002)
Wind Speed	17.4 ^km/h	30.4 ^km/h		46.3 ^km/h (2004)
Wind Gust		46 ^km/h		66.6 ^km/h (2009)
Precipitation	13.21 ^mm			44.2 ^mm (2002)

Weather Element	Average
Visibility	12.9 ^km
Wind Direction	SSW (217.9 °)

Weather Element	Total
Heating Degree Days	17.1 (Base 18.3)

Total Years on Record: 20

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