Portsmouth Rhode Island Weather Almanac
Sunday, May 12, 2019
Cloudy, Moderate Rain and Fog, Windy and Much Colder
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2019
		May 12, 2019								Record					Record
Observed Daily Data		Observed		2018		Normal		Depart		Highest					Lowest
Maximum Temperature		52		54		63		-11		80		in	2004		47		in	1949
Minimum Temperature		41		48		47		-6		59		in	2004		36		in	1907
Average Temperature		47		51		55		-8		70		in	2004		45		in	2010
Precipitation		1.10		.07		.12		+.98		1.60		in	1968
One Hour		.25		.03						.44		in	1952
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0								in
HDD		18		14		10		+8		20		in	2010		0		in	2015
CDD		0		0		0		+0		5		in	2004
Maximum Dew Point		45		52		51		-6		66		in	2015		37		in	1950
Minimum Dew Point		38		45		39		-1		54		in	2004		21		in	2005
Average  Dew Point		42		49		45		-3		59		in	2015		32		in	1962
Maximum Humidity		94%		97%		90%		+4%		100%		in	2013		55%		in	1950
Minimum Humidity		59%		80%		52%		+7%		90%		in	2006		22%		in	2005
Average Humidity		77%		89%		71%		+6%		95%		in	2006		43%		in	1977
Maximum Barometer		30.10		30.20		30.04		+00.06		30.46		in	1990		29.58		in	2003
Minimum Barometer		29.94		30.08		29.81		+00.13		30.16		in	2010		29.41		in	1996
Average Barometer		30.02		30.14		29.93		+00.09		30.26		in	1961		29.53		in	2003
Average Wind		9.3		4.5		7.2		+2.1		18.4		in	1986		2.6		in	2009
Direction		NE		ESE		S				N					SSE
High Wind Gust		20		13		24		-4		53		in	1986		12		in	2009
Direction		ENE		E		S				N					SSE
High Heat Index										81		in	2004
Wind Chill		35													35		in	2019
Maximum Water Temp		50.7		55.4		54.7		-4.0		59.6		in	2004		50.7		in	2019
Minimum Water Temp		47.7		49.1		50.7		-3.0		55.5		in	2013		47.5		in	2005
Average Water Temp		49.2		52.3		52.7		-3.5		56.2		in	2013		49.2		in	2019
Sunrise/ AM Twilight		5:28:22 AM						4:57:05 AM
Sunset / PM Twilight		7:54:50 PM						8:26:06 PM
Length Of Day		14:26:28
Special Conditions		Fog
Comments
		May 12, 2019								Record					Record
Month-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		59.6		65.8		61.8		-2.3		73.3		in	2001		51.2		in	1917
Avg Minimum Temperature		44.9		49.3		45.5		-0.6		51.0		in	1930		39.2		in	1917
Average Temperature		52.3		57.5		53.5		-1.3		61.3		in	1930		45.2		in	1917
Total Precipitation		2.71		.27		1.50		+1.21		4.93		in	1989		T		in	2001
Total Snow		0.0		0.0		T		+0.0		1.7		in	1977		0.0		in
Total HDD		149		86		136		+13		235		in	1917		53		in	1930
Total CDD		0		0		0		+0		27		in	2001		0		in	2019
Avg Maximum Dew Point		51.1		53.8		48.9		+2.2		55.3		in	1998		39.4		in	1952
Avg Minimum Dew Point		40.8		43.6		36.3		+4.5		47.7		in	1998		27.0		in	1966
Average  Dew Point		45.9		48.7		42.6		+3.3		51.5		in	1998		33.3		in	1966
		May 12, 2019								Record					Record
Year-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Total Precipitation		20.37		21.08		18.41		+1.96		31.68		in	1983		10.18		in	1927
Total Snow (since Jul 1 18)		21.1		45.6		31.8		-10.7		84.1		in	1996		5.0		in	1998
Total HDD (since Jul 1 18)		5359		5187		5439		-80		6367		in	1905		4427		in	2012
Total CDD (since Jan 1)		0		0		0		+0		27		in	2001		0		in	2019
Hour-by-Hour Weather For May 12, 2019
Climate Weather for May 12
Weather History For May 12
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