Portsmouth Rhode Island Weather Almanac
Sunday, December 29, 2019
Partly Cloudy to Cloudy, Rain and Fog PM, Light Winds and Continued Warm
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2019
		December 29, 2019								Record					Record
Observed Daily Data		Observed		2018		Normal		Depart		Highest					Lowest
Maximum Temperature		43		54		39		+4		58		in	1984		14		in	1917
Minimum Temperature		34		34		24		+10		47		in	1984		-8		in	1917
Average Temperature		39		44		32		+7		53		in	1984		3		in	1917
Precipitation		.14		.00		.13		+.01		1.89		in	1901
One Hour		.07		.00						.35		in	2013
Snow		0.0		0.0		0.1		-.13		8.3		in	1945
Snow Depth		0		0						15		in	1947
HDD		26		21		33		-7		62		in	1917		12		in	1984
CDD		0		0		0		+0		0		in
Maximum Dew Point		35		53		30		+5		53		in	2018		2		in	2017
Minimum Dew Point		25		25		14		+11		45		in	1984		-9		in	1993
Average  Dew Point		30		39		22		+8		48		in	2005		-1		in	2017
Maximum Humidity		93%		100%		86%		+7%		100%		in	2018		54%		in	1952
Minimum Humidity		49%		57%		57%		-8%		95%		in	1990		17%		in	1994
Average Humidity		71%		79%		71%		-0%		98%		in	1990		39%		in	1949
Maximum Barometer		30.25		30.15		30.15		+00.10		30.82		in	1933		29.49		in	1976
Minimum Barometer		30.07		29.77		29.75		+00.32		30.43		in	2006		28.86		in	1956
Average Barometer		30.16		29.96		29.95		+00.21		30.57		in	2006		29.34		in	1976
Average Wind		4.6		10.8		8.0		-3.4		17.9		in	2009		1.5		in	1992
Direction		NW		WNW		WNW				NW					NNE
High Wind Gust		16		28		26		-10		47		in	2009		7		in	1992
Direction		N		WNW		WNW				NW					NW
Wind Chill		28		27		16		+12							-9		in	1987
Maximum Water Temp		40.1		43.3		43.6		-3.5		49.0		in	2006		39.0		in	2010
Minimum Water Temp		38.0		41.9		40.9		-2.9		46.6		in	2015		34.3		in	2017
Average Water Temp		39.1		42.6		42.2		-3.2		47.4		in	2015		37.2		in	2017
Sunrise/ AM Twilight		7:11:15 AM						6:40:03 AM
Sunset / PM Twilight		4:24:08 PM						4:55:20 PM
Length Of Day		9:12:53
Special Conditions		Fog
Comments
		December 29, 2019								Record					Record
Month-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		42.5		43.3		42.3		+0.2		54.3		in	2015		30.3		in	1989
Avg Minimum Temperature		29.0		30.4		28.4		+0.6		41.9		in	2015		14.1		in	1989
Average Temperature		35.8		36.9		35.3		+0.4		48.1		in	2015		22.2		in	1989
Total Precipitation		5.42		3.85		4.09		+1.33		9.28		in	1936		.58		in	1955
Total Snow		8.4		0.2		7.0		+1.4		21.7		in	1981		T		in	2011
Total HDD		837		809		853		-16		1234		in	1989		480		in	2015
Total CDD		0		0		0		+0		0		in			0		in
Avg Maximum Dew Point		35.8		36.0		34.2		+1.5		49.6		in	2015		15.2		in	1989
Avg Minimum Dew Point		21.5		20.9		18.7		+2.8		36.3		in	2015		-1.2		in	1989
Average  Dew Point		28.6		28.5		26.5		+2.2		42.9		in	2015		7.0		in	1989
		December 29, 2019								Record					Record
Year-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Total Precipitation		54.92		53.08		47.94		+6.98		65.49		in	1983		27.66		in	1965
Total Snow (since Jul 1 19)		8.4		4.4		8.1		+0.3		22.9		in	1904		T		in	1999
Total HDD (since Jul 1 19)		1827		1869		1885		-58		2412		in	1904		1275		in	2015
Total CDD (since Jan 1)		731		775		563		+168		807		in	2016		290		in	1902
Hour-by-Hour Weather For December 29, 2019
Climate Weather for December 29
Weather History For December 29
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