ISLIP, NEW YORK

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Elevation: 85 feet Latitude: 40 48N Longitude: 073 06W

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DAILY WEATHER AVERAGE - DECEMBER 20

[ °C ] °F

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	34.8 ^°F	41.1 ^°F	27.9 ^°F	60.8 ^°F (2002)	10.9 ^°F (2004)
Dewpoint	24.5 ^°F	30.7 ^°F	16.5 ^°F	57.2 ^°F (2002)	-8 ^°F (2011)
Humidity	68.6 ^%	84.8 ^%	49.7 ^%		30 ^% (2011)
Barometer	29.99 ⁱⁿ	30.15 ⁱⁿ	29.85 ⁱⁿ	30.52 ⁱⁿ (2015)	29.34 ⁱⁿ (2002)
Wind Speed	10.1 ^mph	18.1 ^mph		27.6 ^mph (2002)
Wind Gust		27.6 ^mph		36.8 ^mph (2002)
Precipitation	0.49 ⁱⁿ			2.55 ⁱⁿ (2002)

Weather Element	Average
Visibility	7.9 ^mi
Wind Direction	WSW (242.3 °)

Weather Element	Total
Heating Degree Days	30.6 (Base 18.3)
Growing Degree Days	1.5 (Base 10)

Total Years on Record: 16

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