Portsmouth Rhode Island Weather Almanac
Wednesday, May 19, 2021
Partly Cloudy morning, Sunny Day to Partly Cloudy PM,, Light Winds, Continued Warm
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 19, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		78		65		66		+12		83		in	2017		47		in	1950
Minimum Temperature		53		48		49		+4		61		in	2017		34		in	1981
Average Temperature		66		57		58		+8		72		in	2017		46		in	1994
Month Avg Max Temperature		66.5		62.4		63.0		+3.5		69.0		in	2001		55.1		in	1917
Month Avg Min Temperature		47.0		44.3		46.7		+0.3		50.1		in	1930		40.9		in	1967
Month Average Temperature		57.1		53.6		54.9		+2.2		59.5		in	1930		48.5		in	1917
HDD		0		8		7		-7		19		in	1994		0		in	2021
Month HDD		152		216		192		-40		314		in	1917		110		in	1993
Season HDD		4961		5037		5365		-404		6444		in	1905		4458		in	2012
CDD		1		0		0		+1		7		in	2017		0		in
Month CDD		1		0		0		+1		27		in	2001		0		in	2020
Year CDD		1		0		0		+1		27		in	2001		0		in	2020
Maximum Dew Point		53		46		54		-1		68		in	2017		36		in	1981
Minimum Dew Point		43		35		43		+0		57		in	2011		27		in	1981
Average  Dew Point		48		41		49		-1		61		in	2011		32		in	1981
Month Avg Max Dew Point		49.2		47.7		51.2		-1.9		56.9		in	2004		41.8		in	1966
Month Avg Min Dew Point		38.3		34.1		39.7		-1.4		46.5		in	1953		29.8		in	1966
Month Average Dew Point		43.9		41.2		45.4		-1.5		50.5		in	1998		35.8		in	1966
Precipitation		.00		.00		.10		-.10		1.56		in	1901
One Hour		.00		.00						.89		in	2011
Hourly Rate		.00		.00						5.76		in	2011
Month Precipitation		2.38		2.15		2.11		+.27		6.87		in	2006		.09		in	2001
Year Precipitation		14.08		18.35		17.84		-3.76		33.69		in	1983		10.75		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 19, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		81%		85%		92%		-11%		100%		in	2018		66%		in	1955
Minimum Humidity		27%		38%		57%		-30%		95%		in	2015		23%		in	2003
Average Humidity		54%		62%		74%		-20%		98%		in	2015		48%		in	1955
Maximum Barometer		30.37		30.40		30.08		+00.29		30.57		in	1983		29.49		in	1976
Minimum Barometer		30.18		30.15		29.87		+00.31		30.30		in	2009		29.22		in	1976
Average Barometer		30.28		30.28		29.97		+00.30		30.42		in	1983		29.36		in	1976
Average Wind		4.8		13.5		7.1		-2.3		15.2		in	1988		2.4		in	1989
Direction		NNE		NE		NE				NNE					SSE
High Wind Gust		23		37		24		-1		44		in	1964		12		in	1996
Direction		NNE		ENE		NE				SW					SSE
High Heat Index										85		in	2017
Wind Chill															30		in	1981
Maximum Water Temp		58.3		49.8		55.8		+2.5		60.9		in	2017		49.8		in	2020
Minimum Water Temp		54.3		45.7		52.6		+1.7		57.2		in	2013		45.7		in	2020
Average Water Temp		56.3		47.8		54.2		+2.1		58.7		in	1998		47.8		in	2020
Sunrise/ AM Twilight		5:21:20 AM						4:49:17 AM
Sunset / PM Twilight		8:02:15 PM						8:34:18 PM
Length Of Day		14:40:55
Special Conditions		None
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