Portsmouth Rhode Island Weather Almanac
Friday, May 7, 2021
Partly Cloudy early, Clear Day to Partly Cloudy PM, Light Winds and Cooler
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 7, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		62		63		62		+0		85		in	1939		45		in	1967
Minimum Temperature		44		40		46		-2		58		in	1930		33		in	1967
Average Temperature		53		52		54		-1		71		in	1930		39		in	1967
Month Avg Max Temperature		62.7		64.7		61.0		+1.7		74.6		in	1930		49.0		in	1917
Month Avg Min Temperature		46.6		46.1		45.1		+1.4		53.6		in	2010		37.7		in	1964
Month Average Temperature		54.9		55.7		53.1		+1.7		63.7		in	1930		43.7		in	1917
HDD		12		13		11		+1		26		in	1967		0		in	2000
Month HDD		71		65		83		-12		149		in	1917		18		in	2010
Season HDD		4880		4886		5256		-376		6330		in	1904		4381		in	2012
CDD		0		0		0		+0		6		in	1930		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		46		45		50		-4		63		in	1977		24		in	1968
Minimum Dew Point		34		26		39		-5		54		in	1998		6		in	1995
Average  Dew Point		40		36		44		-4		58		in	1998		17		in	1995
Month Avg Max Dew Point		50.1		48.7		49.1		+1.0		57.9		in	1998		33.6		in	1952
Month Avg Min Dew Point		37.7		35.7		37.4		+0.3		49.6		in	1998		21.3		in	1974
Month Average Dew Point		44.0		42.4		43.3		+0.7		53.7		in	1998		29.8		in	1952
Precipitation		.00		.01		.11		-.11		1.50		in	1908
One Hour		.00		.01						.31		in	1998
Hourly Rate		.00		.00						1.20		in	2009
Month Precipitation		1.37		1.08		.84		+.53		3.08		in	1922		.00		in	2015
Year Precipitation		13.07		17.28		16.57		-3.50		31.53		in	1983		9.78		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		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 7, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		86%		93%		87%		-1%		100%		in	2013		48%		in	1995
Minimum Humidity		48%		25%		47%		+1%		93%		in	2009		13%		in	1995
Average Humidity		67%		59%		67%		-0%		96%		in	1998		31%		in	1995
Maximum Barometer		29.97		29.76		30.07		-00.10		30.65		in	1992		29.59		in	1951
Minimum Barometer		29.88		29.67		29.84		+00.04		30.49		in	2001		29.35		in	1967
Average Barometer		29.93		29.72		29.95		-00.03		30.54		in	2001		29.54		in	1951
Average Wind		4.5		7.0		7.2		-2.7		20.6		in	2005		2.8		in	1953
Direction		SSE		NW		SSW				N					SE
High Wind Gust		19		18		24		-5		45		in	2005		12		in	1998
Direction		S		NW		S				NNE					W
High Heat Index										86		in	1930
Wind Chill				35											23		in	1967
Maximum Water Temp		52.9		45.1		53.1		-0.2		57.6		in	2010		45.1		in	2020
Minimum Water Temp		50.9		42.3		49.8		+1.1		54.6		in	2010		42.3		in	2020
Average Water Temp		51.9		43.7		51.4		+0.5		56.1		in	2010		43.7		in	2020
Sunrise/ AM Twilight		5:33:17 AM						5:02:29 AM
Sunset / PM Twilight		7:50:12 PM						8:21:00 PM
Length Of Day		14:16:55
Special Conditions		None
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