Portsmouth Rhode Island Weather Almanac
Thursday, May 27, 2021
Cloudy, Light Rain early, Clear Day to Partly Cloudy PM, Very Warm
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 27, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		81		72		69		+12		84		in	1933		54		in	1983
Minimum Temperature		61		55		52		+9		64		in	1914		35		in	1972
Average Temperature		71		64		60		+11		74		in	1914		50		in	1974
Month Avg Max Temperature		68.2		64.4		64.3		+3.9		70.1		in	1991		56.6		in	2005
Month Avg Min Temperature		49.1		45.4		47.9		+1.2		51.6		in	2012		41.6		in	1967
Month Average Temperature		59.0		55.2		56.1		+2.8		59.4		in	2010		50.1		in	1967
HDD		0		1		5		-5		15		in	1974		0		in	2021
Month HDD		180		265		239		-59		402		in	1967		154		in	1993
Season HDD		4989		5086		5412		-423		6518		in	1905		4475		in	2012
CDD		6		0		1		+5		9		in	1914		0		in
Month CDD		17		1		7		+10		27		in	2001		0		in	2013
Year CDD		17		1		7		+10		27		in	2001		0		in	2013
Maximum Dew Point		65		64		57		+8		69		in	2011		38		in	1968
Minimum Dew Point		50		54		47		+3		61		in	2012		26		in	1969
Average  Dew Point		58		59		52		+6		64		in	2012		33		in	1969
Month Avg Max Dew Point		52.3		50.7		52.6		-0.2		57.4		in	2004		42.0		in	1967
Month Avg Min Dew Point		40.8		37.3		41.3		-0.5		47.6		in	2012		31.0		in	1967
Month Average Dew Point		46.7		44.3		47.0		-0.2		52.3		in	2012		36.5		in	1967
Precipitation		.03		.00		.10		-.07		1.43		in	1901
One Hour		.01		.00						.55		in	1951
Hourly Rate		.00		.00						.94		in	2010
Month Precipitation		2.41		2.68		2.91		-.50		8.33		in	1967		.35		in	2015
Year Precipitation		14.11		18.88		18.64		-4.53		35.09		in	1983		11.43		in	1905
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 27, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		96%		97%		91%		+5%		100%		in	2011		54%		in	1954
Minimum Humidity		36%		70%		53%		-17%		85%		in	1974		25%		in	1980
Average Humidity		66%		84%		72%		-6%		92%		in	2002		42%		in	1954
Maximum Barometer		30.00		30.26		30.05		-00.05		30.52		in	1987		29.65		in	1961
Minimum Barometer		29.84		30.21		29.84		+00.00		30.22		in	1972		29.44		in	1961
Average Barometer		29.92		30.24		29.94		-00.02		30.35		in	1972		29.55		in	1961
Average Wind		6.1		6.2		6.1		-0.0		16.7		in	1956		1.4		in	2006
Direction		NW		S		S				SSW					S
High Wind Gust		21		17		22		-1		53		in	1956		13		in	2017
Direction		NW		S		SSE				SSW					SW
High Heat Index		81								88		in	1914
Wind Chill															34		in	1972
Maximum Water Temp		59.9		55.2		58.7		+1.2		68.0		in	2007		52.7		in	2005
Minimum Water Temp		55.9		50.5		55.0		+0.9		59.2		in	2012		50.0		in	2005
Average Water Temp		57.9		52.9		56.8		+1.1		63.3		in	2007		51.4		in	2005
Sunrise/ AM Twilight		5:15:42 AM						4:42:53 AM
Sunset / PM Twilight		8:09:23 PM						8:42:13 PM
Length Of Day		14:53:41
Special Conditions		None
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