Portsmouth Rhode Island Weather Almanac
Wednesday, May 12, 2021
Partly Cloudy early, Clear Day to Partly Cloudy PM, Light Rain @ 630pm, Seasonal Temps
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 12, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		66		58		64		+2		80		in	2004		47		in	1949
Minimum Temperature		44		41		47		-3		59		in	2004		36		in	1907
Average Temperature		55		50		55		+0		70		in	2004		45		in	2010
Month Avg Max Temperature		62.1		60.8		61.8		+0.3		73.3		in	2001		51.2		in	1917
Month Avg Min Temperature		45.7		43.4		45.8		-0.1		51.0		in	1930		39.2		in	1917
Month Average Temperature		54.2		52.3		53.8		+0.3		61.6		in	1930		45.4		in	1917
HDD		10		15		10		+0		20		in	2010		0		in	2015
Month HDD		130		152		134		-4		235		in	1917		53		in	1930
Season HDD		4939		4973		5307		-368		6367		in	1905		4427		in	2012
CDD		0		0		0		+0		5		in	2004		0		in
Month CDD		0		0		0		+0		27		in	2001		0		in	2021
Year CDD		0		0		0		+0		27		in	2001		0		in	2021
Maximum Dew Point		48		42		52		-4		66		in	2015		37		in	1950
Minimum Dew Point		30		23		40		-10		54		in	2004		21		in	2005
Average  Dew Point		39		33		46		-7		59		in	2015		32		in	1962
Month Avg Max Dew Point		48.8		46.6		50.0		-1.2		55.3		in	1998		39.4		in	1952
Month Avg Min Dew Point		37.0		31.8		38.3		-1.3		47.7		in	1998		27.0		in	1966
Month Average Dew Point		43.0		39.4		44.2		-1.2		51.5		in	1998		33.3		in	1966
Precipitation		.01		.00		.11		-.10		1.60		in	1968
One Hour		.01		.00						.44		in	1952
Hourly Rate		.00		.00						.65		in	2006
Month Precipitation		2.37		1.53		1.39		+.98		4.93		in	1989		T		in	2001
Year Precipitation		14.07		17.73		17.12		-3.05		31.68		in	1983		10.18		in	1927
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0								in
Month Snow		0.0		0.0		0.0		+0.0		1.7		in	1977		0.0		in
Season Snow		27.7		12.9		33.5		-5.8		84.1		in	1996		5.0		in	1998
		May 12, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		88%		86%		89%		-1%		100%		in	2013		55%		in	1950
Minimum Humidity		33%		29%		51%		-18%		90%		in	2006		22%		in	2005
Average Humidity		61%		58%		70%		-10%		95%		in	2006		43%		in	1977
Maximum Barometer		30.15		30.08		30.04		+00.11		30.46		in	1990		29.58		in	2003
Minimum Barometer		30.00		29.79		29.81		+00.19		30.16		in	2010		29.41		in	1996
Average Barometer		30.08		29.94		29.93		+00.15		30.26		in	1961		29.53		in	2003
Average Wind		6.3		14.4		7.3		-1.0		18.4		in	1986		2.6		in	2009
Direction		NW		WNW		S				N					SSE
High Wind Gust		24		30		24		+0		53		in	1986		12		in	2009
Direction		NW		WNW		S				N					SSE
High Heat Index										81		in	2004
Wind Chill		40		33											33		in	2020
Maximum Water Temp		54.1		45.0		54.3		-0.2		59.6		in	2004		45.0		in	2020
Minimum Water Temp		50.5		42.8		50.4		+0.1		55.5		in	2013		42.8		in	2020
Average Water Temp		52.3		43.9		52.4		-0.1		56.2		in	2013		43.9		in	2020
Sunrise/ AM Twilight		5:27:50 AM						4:56:30 AM
Sunset / PM Twilight		7:55:22 PM						8:26:41 PM
Length Of Day		14:27:32
Special Conditions		None
Comments
Hour-by-Hour Weather For May 12, 2021
Climate Weather for May 12
Weather History For May 12
Weather Calendar
Back To Weather Stat Page
Home