Portsmouth Rhode Island Weather Almanac
Monday, May 24, 2021
Partly Cloudy early then Clear and Much Cooler
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 24, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		64		68		68		-4		85		in	1936		50		in	2005
Minimum Temperature		50		46		51		-1		61		in	1977		39		in	1956
Average Temperature		57		57		59		-2		72		in	1975		47		in	2005
Month Avg Max Temperature		67.8		63.4		63.8		+3.9		69.0		in	1918		56.8		in	2005
Month Avg Min Temperature		48.3		44.3		47.5		+0.8		50.7		in	2012		41.6		in	1956
Month Average Temperature		58.3		54.2		55.7		+2.7		59.4		in	1930		50.3		in	2005
HDD		8		8		6		+2		18		in	2005		0		in	2010
Month HDD		171		260		224		-53		354		in	2005		141		in	1918
Season HDD		4980		5081		5397		-417		6499		in	1905		4470		in	2012
CDD		0		0		1		-1		7		in	1975		0		in
Month CDD		11		0		4		+7		27		in	2001		0		in	2020
Year CDD		11		0		4		+7		27		in	2001		0		in	2020
Maximum Dew Point		50		54		56		-6		66		in	1975		36		in	1965
Minimum Dew Point		39		41		45		-6		58		in	2011		19		in	1956
Average  Dew Point		45		48		51		-6		61		in	2011		29		in	1956
Month Avg Max Dew Point		51.3		49.0		52.0		-0.8		57.6		in	2004		41.7		in	1967
Month Avg Min Dew Point		39.9		35.4		40.7		-0.8		46.1		in	2012		30.3		in	1967
Month Average Dew Point		45.8		42.5		46.4		-0.6		51.0		in	2018		36.0		in	1967
Precipitation		.00		.00		.10		-.10		1.33		in	2001
One Hour		.00		.00						.53		in	1999
Hourly Rate		.00		.00						3.51		in	2011
Month Precipitation		2.38		2.67		2.61		-.23		6.96		in	2006		.35		in	2015
Year Precipitation		14.08		18.87		18.34		-4.26		34.81		in	1983		11.34		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 24, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		77%		88%		90%		-13%		100%		in	2013		62%		in	1965
Minimum Humidity		42%		54%		56%		-14%		95%		in	1979		13%		in	1981
Average Humidity		60%		71%		73%		-13%		98%		in	1979		41%		in	1981
Maximum Barometer		30.32		30.29		30.04		+00.28		30.43		in	2007		29.49		in	1951
Minimum Barometer		30.08		30.20		29.82		+00.26		30.23		in	2010		29.39		in	1951
Average Barometer		30.20		30.25		29.93		+00.27		30.31		in	2007		29.44		in	1951
Average Wind		5.8		10.5		6.8		-1.0		13.9		in	2003		2.0		in	1997
Direction		SSW		NNE		SSW				N					SSE
High Wind Gust		20		21		23		-3		44		in	1988		11		in	1997
Direction		SSW		NNE		NNE				NW					SE
High Heat Index										85		in	1936
Wind Chill				39											36		in	2005
Maximum Water Temp		58.6		49.8		56.9		+1.7		65.5		in	2007		49.8		in	2020
Minimum Water Temp		55.9		45.9		53.4		+2.5		59.5		in	2007		45.9		in	2020
Average Water Temp		57.3		47.9		55.2		+2.1		62.5		in	2007		47.9		in	2020
Sunrise/ AM Twilight		5:17:35 AM						4:45:02 AM
Sunset / PM Twilight		8:06:50 PM						8:39:22 PM
Length Of Day		14:49:15
Special Conditions		None
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