Portsmouth Rhode Island Weather Almanac
Thursday, December 19, 2019
Clear (Light Snow Shower early), Very Windy and Very Cold
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2019
		December 19, 2019								Record					Record
Observed Daily Data		Observed		2018		Normal		Depart		Highest					Lowest
Maximum Temperature		22		39		41		-19		57		in	1899		19		in	1919
Minimum Temperature		13		22		27		-14		41		in	1996		3		in	1919
Average Temperature		18		31		34		-16		48		in	1899		11		in	1919
Precipitation		T		.00		.14		.00		1.95		in	1986
One Hour		.00		.00						.41		in	1986
Snow		T		0.0		0.1		.00		8.8		in	2008
Snow Depth		T		0						18		in	1904
HDD		47		34		31		+16		54		in	1919		17		in	1899
CDD		0		0		0		+0		0		in
Maximum Dew Point		11		28		33		-22		54		in	1990		4		in	1991
Minimum Dew Point		3		13		17		-14		41		in	1996		-14		in	1979
Average  Dew Point		7		21		25		-18		45		in	1996		0		in	1979
Maximum Humidity		71%		77%		83%		-12%		100%		in	2001		57%		in	1978
Minimum Humidity		54%		37%		54%		+0%		96%		in	1993		33%		in	2009
Average Humidity		63%		57%		68%		-6%		98%		in	1993		46%		in	1978
Maximum Barometer		30.31		30.14		30.16		+00.15		30.74		in	1991		29.68		in	1963
Minimum Barometer		29.87		30.05		29.83		+00.04		30.46		in	1964		29.25		in	1969
Average Barometer		30.09		30.10		30.00		+00.09		30.55		in	1964		29.51		in	1986
Average Wind		16.0		5.6		8.2		+7.8		18.5		in	1977		3.0		in	2007
Direction		WNW		WNW		WNW				NE					E
High Wind Gust		39		21		26		+13		49		in	1986		14		in	2004
Direction		WNW		NW		WNW				ENE					NW
Wind Chill		-4		12		13		-17							-11		in	1979
Maximum Water Temp		41.0		40.6		45.4		-4.4		50.4		in	2006		40.6		in	2018
Minimum Water Temp		38.4		37.9		42.5		-4.1		48.7		in	2015		37.9		in	2018
Average Water Temp		39.7		39.3		44.0		-4.3		49.5		in	2015		39.3		in	2018
Sunrise/ AM Twilight		7:07:32 AM						6:36:13 AM
Sunset / PM Twilight		4:17:59 PM						4:49:18 PM
Length Of Day		9:10:27
Special Conditions		None
Comments
		December 19, 2019								Record					Record
Month-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		41.8		41.8		43.7		-1.9		53.8		in	2015		31.3		in	1904
Avg Minimum Temperature		28.9		28.8		30.0		-1.1		41.4		in	2015		16.2		in	1989
Average Temperature		35.4		35.3		36.8		-1.5		47.6		in	2015		24.8		in	1989
Total Precipitation		5.28		1.95		2.77		+2.51		7.88		in	1936		.27		in	1998
Total Snow		8.4		T		4.0		+4.4		21.3		in	1981		0.0		in	2015
Total HDD		557		558		530		+27		761		in	1989		325		in	2015
Total CDD		0		0		0		+0		0		in			0		in
Avg Maximum Dew Point		36.5		33.5		35.7		+0.8		48.5		in	2015		17.9		in	1989
Avg Minimum Dew Point		21.1		19.3		20.5		+0.5		36.2		in	2015		-0.2		in	1989
Average  Dew Point		28.8		26.4		28.1		+0.6		42.3		in	2015		8.9		in	1989
		December 19, 2019								Record					Record
Year-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Total Precipitation		54.78		51.18		46.62		+8.16		63.81		in	1983		27.14		in	1965
Total Snow (since Jul 1 19)		8.4		4.2		5.1		+3.3		21.3		in	1981		0.0		in	2015
Total HDD (since Jul 1 19)		1547		1618		1562		-15		2066		in	1904		1120		in	2015
Total CDD (since Jan 1)		731		775		563		+168		807		in	2016		290		in	1902
Hour-by-Hour Weather For December 19, 2019
Climate Weather for December 19
Weather History For December 19
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