Portsmouth Rhode Island Weather Almanac
Sunday, December 15, 2019
Mostly Cloudy to Partly Cloudy PM, Windy and Warm
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2019
		December 15, 2019								Record					Record
Observed Daily Data		Observed		2018		Normal		Depart		Highest					Lowest
Maximum Temperature		48		52		42		+6		61		in	2015		24		in	2010
Minimum Temperature		33		41		28		+5		48		in	2015		9		in	1900
Average Temperature		41		47		35		+6		55		in	2015		18		in	1900
Precipitation		.00		.05		.14		-.14		1.79		in	1981
One Hour		.00		.03						.60		in	1987
Snow		0.0		0.0		0.1		-.14		7.1		in	1905
Snow Depth		T		0						11		in	1904
HDD		24		18		30		-6		47		in	1900		10		in	2015
CDD		0		0		0		+0		0		in
Maximum Dew Point		44		51		34		+10		60		in	2015		10		in	2010
Minimum Dew Point		20		36		19		+2		43		in	2008		-5		in	2016
Average  Dew Point		32		44		26		+6		50		in	2015		4		in	1961
Maximum Humidity		86%		100%		86%		+0%		100%		in	2018		49%		in	1961
Minimum Humidity		46%		82%		57%		-11%		96%		in	1993		17%		in	1959
Average Humidity		66%		91%		71%		-5%		98%		in	1993		42%		in	1961
Maximum Barometer		30.08		30.25		30.13		-00.05		30.68		in	1902		29.24		in	1954
Minimum Barometer		29.25		30.12		29.80		-00.55		30.46		in	1994		29.05		in	1968
Average Barometer		29.67		30.19		29.96		-00.30		30.51		in	1994		29.16		in	1954
Average Wind		12.1		7.4		8.7		+3.4		19.1		in	1961		2.6		in	2014
Direction		W		NNE		WNW				NNW					WNW
High Wind Gust		32		23		27		+5		53		in	1953		11		in	1992
Direction		WNW		NNE		WNW				WSW					WSW
Wind Chill		24		35		18		+6							-4		in	1980
Maximum Water Temp		42.3		44.2		46.0		-3.7		51.9		in	2015		41.5		in	1997
Minimum Water Temp		39.9		41.5		43.4		-3.5		50.7		in	2015		38.7		in	2010
Average Water Temp		41.1		42.9		44.7		-3.6		51.3		in	2015		40.1		in	1997
Sunrise/ AM Twilight		7:05:05 AM						6:33:48 AM
Sunset / PM Twilight		4:16:30 PM						4:47:47 PM
Length Of Day		9:11:25
Special Conditions		None
Comments
		December 15, 2019								Record					Record
Month-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		44.5		42.3		44.4		+0.1		54.8		in	2015		30.1		in	1904
Avg Minimum Temperature		30.4		28.3		30.7		-0.3		42.3		in	2015		16.1		in	1989
Average Temperature		37.5		35.3		37.5		-0.1		48.5		in	2015		24.4		in	1904
Total Precipitation		4.82		1.20		2.21		+2.61		6.64		in	1936		.20		in	1998
Total Snow		8.0		T		2.9		+5.1		19.9		in	1981		0.0		in	2015
Total HDD		409		441		408		+1		606		in	1904		242		in	2015
Total CDD		0		0		0		+0		0		in			0		in
Avg Maximum Dew Point		39.8		33.3		36.3		+3.5		49.1		in	2015		18.0		in	1989
Avg Minimum Dew Point		23.2		18.6		21.3		+1.9		38.0		in	2015		-1.5		in	1989
Average  Dew Point		31.5		25.9		28.8		+2.7		43.6		in	2015		8.3		in	1989
		December 15, 2019								Record					Record
Year-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Total Precipitation		54.32		50.43		46.06		+8.26		63.81		in	1983		27.09		in	1965
Total Snow (since Jul 1 19)		8.0		4.2		4.0		+4.0		21.1		in	1898		0.0		in	2015
Total HDD (since Jul 1 19)		1399		1501		1440		-41		1918		in	1904		1037		in	2015
Total CDD (since Jan 1)		731		775		563		+168		807		in	2016		290		in	1902
Hour-by-Hour Weather For December 15, 2019
Climate Weather for December 15
Weather History For December 15
Weather Calendar
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