Portsmouth Rhode Island Weather Almanac
Thursday, May 13, 2021
Clear Morning, Partly Cloudy Day to Clear Evening, Seasonal Temperatures
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 13, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		66		60		64		+2		85		in	1956		43		in	1914
Minimum Temperature		43		37		48		-5		55		in	1980		37		in	2020
Average Temperature		55		49		56		-1		67		in	1956		41		in	1914
Month Avg Max Temperature		62.4		60.7		62.0		+0.4		72.6		in	2001		50.9		in	1917
Month Avg Min Temperature		45.5		42.9		45.9		-0.5		50.9		in	1930		39.4		in	1917
Month Average Temperature		54.2		52.1		54.0		+0.2		61.6		in	1930		45.4		in	1917
HDD		10		16		9		+1		24		in	1914		0		in	1959
Month HDD		140		168		143		-3		255		in	1917		56		in	1930
Season HDD		4949		4989		5316		-367		6378		in	1905		4429		in	2012
CDD		0		0		0		+0		2		in	1956		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		44		32		52		-8		63		in	1991		31		in	1967
Minimum Dew Point		35		23		41		-6		54		in	1979		19		in	2005
Average  Dew Point		40		28		46		-6		57		in	1979		28		in	2020
Month Avg Max Dew Point		48.5		45.5		50.2		-1.7		55.1		in	2004		39.8		in	1952
Month Avg Min Dew Point		36.8		31.2		38.5		-1.7		46.8		in	1998		27.4		in	1966
Month Average Dew Point		42.8		38.5		44.3		-1.5		50.5		in	1998		34.0		in	1966
Precipitation		.00		.00		.11		-.11		2.36		in	2006
One Hour		.00		.00						1.07		in	2006
Hourly Rate		.00		.00						4.97		in	2006
Month Precipitation		2.37		1.53		1.50		+.87		4.94		in	1989		T		in	2001
Year Precipitation		14.07		17.73		17.23		-3.16		31.75		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 13, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		91%		70%		89%		+2%		100%		in	2006		55%		in	1967
Minimum Humidity		32%		25%		52%		-20%		94%		in	1979		20%		in	2007
Average Humidity		62%		48%		71%		-9%		97%		in	1979		41%		in	1977
Maximum Barometer		30.19		30.27		30.06		+00.13		30.50		in	1987		29.66		in	1952
Minimum Barometer		30.12		30.08		29.82		+00.30		30.31		in	1962		29.39		in	1974
Average Barometer		30.16		30.18		29.94		+00.21		30.36		in	1962		29.55		in	1977
Average Wind		5.2		11.8		7.1		-1.9		13.3		in	2008		3.0		in	1997
Direction		SSW		WNW		S				NNE					SSE
High Wind Gust		25		29		24		+1		46		in	2008		15		in	2018
Direction		SW		WNW		SW				NNE					NNE
High Heat Index										83		in	1956
Wind Chill		42		31											31		in	2020
Maximum Water Temp		54.7		46.0		53.8		+0.9		58.6		in	2012		46.0		in	2020
Minimum Water Temp		53.1		43.5		50.7		+2.4		55.8		in	2012		43.5		in	2020
Average Water Temp		53.9		44.8		52.3		+1.6		57.2		in	2012		44.8		in	2020
Sunrise/ AM Twilight		5:26:49 AM						4:55:23 AM
Sunset / PM Twilight		7:56:22 PM						8:27:48 PM
Length Of Day		14:29:33
Special Conditions		None
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