Portsmouth Rhode Island Weather Almanac
Monday, December 16, 2019
Partly Cloudy Morning, Cloudy Day to Mostly Cloudy PM, Cooler
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2019
		December 16, 2019								Record					Record
Observed Daily Data		Observed		2018		Normal		Depart		Highest					Lowest
Maximum Temperature		33		43		42		-9		62		in	1971		18		in	1910
Minimum Temperature		30		40		28		+2		43		in	1971		6		in	1910
Average Temperature		32		42		35		-3		53		in	1971		12		in	1910
Precipitation		.00		.73		.14		-.14		1.95		in	1960
One Hour		.00		.15						.37		in	1960
Snow		0.0		0.0		0.1		-.14		6.2		in	1989
Snow Depth		0		0						11		in	1904
HDD		33		23		30		+3		53		in	1910		12		in	1971
CDD		0		0		0		+0		0		in
Maximum Dew Point		22		40		34		-12		58		in	1971		4		in	1961
Minimum Dew Point		19		35		18		+1		35		in	2018		-10		in	1961
Average  Dew Point		21		38		26		-5		45		in	1982		-3		in	1961
Maximum Humidity		68%		96%		86%		-18%		100%		in	2005		52%		in	1951
Minimum Humidity		57%		79%		58%		-1%		89%		in	2014		22%		in	1961
Average Humidity		63%		88%		72%		-9%		93%		in	2014		39%		in	1988
Maximum Barometer		30.26		30.18		30.14		+00.12		30.62		in	1994		29.54		in	1987
Minimum Barometer		30.08		29.65		29.78		+00.30		30.49		in	1994		28.87		in	1972
Average Barometer		30.17		29.92		29.96		+00.21		30.56		in	1994		29.25		in	1987
Average Wind		7.8		14.1		8.7		-0.9		17.0		in	1972		1.2		in	1986
Direction		WNW		NE		WNW				W					E
High Wind Gust		26		33		28		-2		56		in	1927		10		in	1986
Direction		WNW		NNE		WNW				W					W
Wind Chill		22		31		18		+4							-9		in	1951
Maximum Water Temp		41.8		44.8		45.7		-3.9		51.3		in	2011		39.4		in	2010
Minimum Water Temp		39.7		42.6		43.2		-3.5		49.8		in	2015		36.7		in	2010
Average Water Temp		40.8		43.7		44.5		-3.7		50.5		in	2011		38.1		in	2010
Sunrise/ AM Twilight		7:05:44 AM						6:34:27 AM
Sunset / PM Twilight		4:16:49 PM						4:48:06 PM
Length Of Day		9:11:05
Special Conditions		None
Comments
		December 16, 2019								Record					Record
Month-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		43.8		42.3		44.3		-0.4		54.4		in	2015		30.4		in	1904
Avg Minimum Temperature		30.4		29.1		30.6		-0.2		42.1		in	2015		16.3		in	1989
Average Temperature		37.1		35.7		37.4		-0.3		48.3		in	2015		24.7		in	1904
Total Precipitation		4.82		1.93		2.35		+2.47		7.06		in	1981		.20		in	1998
Total Snow		8.0		T		3.1		+4.9		19.9		in	1981		0.0		in	2015
Total HDD		442		464		438		+4		642		in	1904		263		in	2015
Total CDD		0		0		0		+0		0		in			0		in
Avg Maximum Dew Point		38.7		33.7		36.2		+2.5		48.6		in	2015		18.7		in	1989
Avg Minimum Dew Point		22.9		19.6		21.1		+1.8		37.7		in	2015		-1.2		in	1989
Average  Dew Point		30.8		26.7		28.6		+2.2		43.1		in	2015		8.8		in	1989
		December 16, 2019								Record					Record
Year-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Total Precipitation		54.32		51.16		46.20		+8.12		63.81		in	1983		27.10		in	1965
Total Snow (since Jul 1 19)		8.0		4.2		4.2		+3.8		21.1		in	1898		0.0		in	2015
Total HDD (since Jul 1 19)		1432		1524		1470		-38		1954		in	1904		1058		in	2015
Total CDD (since Jan 1)		731		775		563		+168		807		in	2016		290		in	1902
Hour-by-Hour Weather For December 16, 2019
Climate Weather for December 16
Weather History For December 16
Weather Calendar
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