Portsmouth Rhode Island Weather Almanac
Saturday, May 8, 2021
Mostly Cloudy, Very Light Sprinkles @ 7pm and Much Cooler
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 8, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		55		57		62		-7		85		in	2000		48		in	1947
Minimum Temperature		42		43		46		-4		57		in	2000		35		in	1956
Average Temperature		49		50		54		-5		71		in	2000		43		in	1898
Month Avg Max Temperature		61.8		63.8		61.1		+0.6		74.6		in	1930		49.4		in	1917
Month Avg Min Temperature		46.0		45.8		45.3		+0.8		53.3		in	2010		38.0		in	1917
Month Average Temperature		54.1		55.0		53.3		+0.9		64.0		in	1930		44.0		in	1917
HDD		16		15		11		+5		22		in	1898		0		in	2000
Month HDD		87		80		94		-7		168		in	1917		20		in	1930
Season HDD		4896		4901		5267		-371		6335		in	1904		4392		in	2012
CDD		0		0		0		+0		6		in	2000		0		in
Month CDD		0		0		0		+0		19		in	2001		0		in	2021
Year CDD		0		0		0		+0		19		in	2001		0		in	2021
Maximum Dew Point		42		43		50		-8		63		in	2013		22		in	1950
Minimum Dew Point		36		27		39		-3		54		in	2013		6		in	1950
Average  Dew Point		39		35		45		-6		59		in	2013		14		in	1950
Month Avg Max Dew Point		49.1		48.0		49.3		-0.1		57.9		in	1998		34.0		in	1952
Month Avg Min Dew Point		37.5		34.6		37.6		-0.1		49.4		in	1998		22.4		in	1974
Month Average Dew Point		43.4		41.5		43.5		-0.1		53.6		in	1998		30.5		in	1952
Precipitation		T		.13		.11		.00		2.56		in	1954
One Hour		T		.05						.71		in	1954
Hourly Rate		.00		.08						1.42		in	2013
Month Precipitation		1.37		1.21		.95		+.42		3.38		in	1954		.00		in	2015
Year Precipitation		13.07		17.41		16.68		-3.61		31.53		in	1983		9.78		in	1927
Snow		0.0		0.0		0.0		+0.0		T		in	1898
Snow Depth		0		0								in
Month Snow		0.0		0.0		0.0		+0.0		T		in	1995		0.0		in
Season Snow		27.7		12.9		33.5		-5.8		84.1		in	1996		5.0		in	1998
		May 8, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		82%		93%		87%		-5%		100%		in	2018		33%		in	1950
Minimum Humidity		55%		34%		50%		+5%		88%		in	1954		15%		in	1950
Average Humidity		69%		64%		69%		-0%		94%		in	1954		24%		in	1950
Maximum Barometer		29.93		29.84		30.07		-00.14		30.59		in	1968		29.35		in	1967
Minimum Barometer		29.80		29.51		29.83		-00.03		30.32		in	2001		29.15		in	1967
Average Barometer		29.87		29.68		29.95		-00.08		30.42		in	1968		29.25		in	1967
Average Wind		5.7		5.8		7.5		-1.8		19.1		in	2005		2.6		in	1996
Direction		N		NW		S				N					S
High Wind Gust		21		21		25		-4		41		in	2005		12		in	2018
Direction		NNW		NW		S				N					SSE
High Heat Index										86		in	2000
Wind Chill		40													26		in	1956
Maximum Water Temp		52.3		45.0		53.2		-0.9		59.4		in	2007		45.0		in	2020
Minimum Water Temp		50.0		43.0		50.3		-0.3		56.1		in	2010		43.0		in	2020
Average Water Temp		51.2		44.0		51.7		-0.6		56.8		in	2007		44.0		in	2020
Sunrise/ AM Twilight		5:32:08 AM						5:01:14 AM
Sunset / PM Twilight		7:51:14 PM						8:22:09 PM
Length Of Day		14:19:06
Special Conditions		None
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