Portsmouth Rhode Island Weather Almanac
Sunday, May 23, 2021
Clear Morning, Partly Cloudy Day to Mostly Cloudy PM, Hot and Humid
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 23, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		86		67		67		+19		90		in	1992		51		in	1940
Minimum Temperature		63		46		51		+12		63		in	2021		42		in	1935
Average Temperature		75		57		59		+16		75		in	2021		49		in	1940
Month Avg Max Temperature		67.9		63.2		63.7		+4.3		69.2		in	1918		57.1		in	2005
Month Avg Min Temperature		48.3		44.3		47.3		+0.9		50.5		in	2012		41.7		in	1967
Month Average Temperature		58.4		54.0		55.5		+2.9		59.6		in	1930		50.1		in	1917
HDD		0		8		6		-6		16		in	1940		0		in	2021
Month HDD		163		252		218		-55		342		in	1917		133		in	1918
Season HDD		4972		5073		5391		-419		6488		in	1905		4467		in	2012
CDD		10		0		1		+9		10		in	2021		0		in
Month CDD		11		0		3		+8		27		in	2001		0		in	2020
Year CDD		11		0		3		+8		27		in	2001		0		in	2020
Maximum Dew Point		70		64		56		+14		70		in	2021		38		in	1971
Minimum Dew Point		50		41		45		+5		59		in	2013		26		in	1981
Average  Dew Point		60		53		50		+10		62		in	2012		32		in	1971
Month Avg Max Dew Point		51.3		48.8		51.9		-0.6		57.7		in	2004		41.9		in	1967
Month Avg Min Dew Point		40.0		35.2		40.5		-0.5		46.3		in	1953		30.2		in	1967
Month Average Dew Point		45.8		42.2		46.2		-0.4		50.9		in	2018		36.0		in	1967
Precipitation		.00		.52		.10		-.10		2.33		in	1979
One Hour		.00		.25						.99		in	1994
Hourly Rate		.00		.58						1.95		in	2004
Month Precipitation		2.38		2.67		2.51		-.13		6.96		in	2006		.35		in	2015
Year Precipitation		14.08		18.87		18.24		-4.16		34.80		in	1983		11.13		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 23, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		85%		96%		89%		-4%		100%		in	2017		55%		in	1971
Minimum Humidity		49%		81%		54%		-5%		90%		in	2013		23%		in	1971
Average Humidity		67%		89%		72%		-5%		95%		in	2013		39%		in	1971
Maximum Barometer		30.08		30.21		30.04		+00.04		30.49		in	2007		29.53		in	1951
Minimum Barometer		29.75		30.00		29.84		-00.09		30.40		in	2007		29.40		in	1951
Average Barometer		29.92		30.11		29.94		-00.03		30.45		in	2007		29.47		in	1951
Average Wind		7.3		9.0		6.5		+0.8		13.1		in	1985		1.2		in	1994
Direction		NW		NE		SSW				SE					S
High Wind Gust		25		28		22		+3		42		in	1994		12		in	2010
Direction		NW		NNE		SSE				ENE					ESE
High Heat Index		91								91		in	2021
Wind Chill				40											39		in	1935
Maximum Water Temp		59.4		52.5		56.6		+2.8		64.4		in	2007		51.8		in	2005
Minimum Water Temp		54.1		46.0		53.3		+0.8		59.4		in	2007		46.0		in	2020
Average Water Temp		56.8		49.3		55.0		+1.8		61.9		in	2007		49.3		in	2020
Sunrise/ AM Twilight		5:18:16 AM						4:45:49 AM
Sunset / PM Twilight		8:05:56 PM						8:38:23 PM
Length Of Day		14:47:40
Special Conditions		None
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