Portsmouth Rhode Island Weather Almanac
Tuesday, May 12, 2020
Clear early then Partly Cloudy, Windy and Continued Cold
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		May 12, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		58		52		63		-5		80		in	2004		47		in	1949
Minimum Temperature		41		41		47		-6		59		in	2004		36		in	1907
Average Temperature		50		47		55		-5		70		in	2004		45		in	2010
Precipitation		.00		1.10		.12		-.12		1.60		in	1968
One Hour		.00		.25						.44		in	1952
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0								in
HDD		15		18		10		+5		20		in	2010		0		in	2015
CDD		0		0		0		+0		5		in	2004
Maximum Dew Point		42		45		51		-9		66		in	2015		37		in	1950
Minimum Dew Point		23		38		39		-16		54		in	2004		21		in	2005
Average  Dew Point		33		42		45		-12		59		in	2015		32		in	1962
Maximum Humidity		86%		94%		90%		-4%		100%		in	2013		55%		in	1950
Minimum Humidity		29%		59%		52%		-23%		90%		in	2006		22%		in	2005
Average Humidity		58%		77%		71%		-13%		95%		in	2006		43%		in	1977
Maximum Barometer		30.08		30.10		30.04		+00.04		30.46		in	1990		29.58		in	2003
Minimum Barometer		29.79		29.94		29.81		-00.02		30.16		in	2010		29.41		in	1996
Average Barometer		29.94		30.02		29.93		+00.01		30.26		in	1961		29.53		in	2003
Average Wind		14.4		9.3		7.2		+7.2		18.4		in	1986		2.6		in	2009
Direction		WNW		NE		S				N					SSE
High Wind Gust		30		20		24		+6		53		in	1986		12		in	2009
Direction		WNW		ENE		S				N					SSE
High Heat Index										81		in	2004
Wind Chill		33		35											33		in	2020
Maximum Water Temp		45.0		50.7		54.7		-9.7		59.6		in	2004		45.0		in	2020
Minimum Water Temp		42.8		47.7		50.7		-7.9		55.5		in	2013		42.8		in	2020
Average Water Temp		43.9		49.2		52.7		-8.8		56.2		in	2013		43.9		in	2020
Sunrise/ AM Twilight		5:27:35 AM						4:56:14 AM
Sunset / PM Twilight		7:55:36 PM						8:26:57 PM
Length Of Day		14:28:01
Special Conditions		None
Comments
		May 12, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		60.8		59.6		61.8		-1.1		73.3		in	2001		51.2		in	1917
Avg Minimum Temperature		43.4		44.9		45.5		-2.1		51.0		in	1930		39.2		in	1917
Average Temperature		52.1		52.3		53.5		-1.4		61.3		in	1930		45.2		in	1917
Total Precipitation		1.53		2.71		1.50		+.03		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		152		149		136		+16		235		in	1917		53		in	1930
Total CDD		0		0		0		+0		27		in	2001		0		in
Avg Maximum Dew Point		46.6		51.1		48.9		-2.3		55.3		in	1998		39.4		in	1952
Avg Minimum Dew Point		31.8		40.8		36.3		-4.4		47.7		in	1998		27.0		in	1966
Average  Dew Point		39.2		45.9		42.6		-3.4		51.5		in	1998		33.3		in	1966
		May 12, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		17.73		20.37		18.54		-.81		31.68		in	1983		10.18		in	1927
Total Snow (since Jul 1 19)		12.9		21.1		31.8		-18.9		84.1		in	1996		5.0		in	1998
Total HDD (since Jul 1 19)		4973		5359		5470		-497		6367		in	1905		4427		in	2012
Total CDD (since Jan 1)		0		0		0		+0.0		27		in	2001		0		in	2020
Hour-by-Hour Weather For May 12, 2020
Climate Weather for May 12
Weather History For May 12
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