Portsmouth Rhode Island Weather Almanac
Tuesday, May 25, 2021
Partly Cloudy, Breezy and Continued Cool
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 25, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		65		71		68		-3		90		in	2007		46		in	1925
Minimum Temperature		50		51		51		-1		60		in	2007		34		in	1956
Average Temperature		58		61		60		-2		75		in	2007		44		in	1925
Month Avg Max Temperature		67.6		63.7		64.0		+3.6		69.2		in	1991		56.4		in	2005
Month Avg Min Temperature		48.4		44.6		47.6		+0.8		50.9		in	2012		41.3		in	1956
Month Average Temperature		58.3		54.4		55.8		+2.5		59.3		in	1993		50.1		in	2005
HDD		7		4		5		+2		21		in	1925		0		in	2016
Month HDD		178		264		229		-51		373		in	2005		144		in	1993
Season HDD		4987		5085		5402		-415		6509		in	1905		4475		in	2012
CDD		0		0		1		-1		10		in	2007		0		in
Month CDD		11		0		5		+6		27		in	2001		0		in	2020
Year CDD		11		0		5		+6		27		in	2001		0		in	2020
Maximum Dew Point		54		63		56		-2		68		in	2010		35		in	1956
Minimum Dew Point		42		49		46		-4		58		in	1979		27		in	1972
Average  Dew Point		48		56		51		-3		62		in	2010		32		in	1956
Month Avg Max Dew Point		51.4		49.6		52.2		-0.8		57.6		in	2004		42.0		in	1967
Month Avg Min Dew Point		40.0		36.0		40.9		-0.9		46.5		in	2012		30.6		in	1967
Month Average Dew Point		45.8		43.0		46.6		-0.7		51.3		in	2012		36.3		in	1967
Precipitation		.00		.01		.10		-.10		2.85		in	1967
One Hour		.00		.01						.67		in	1978
Hourly Rate		.00		.00						5.65		in	2017
Month Precipitation		2.38		2.68		2.71		-.33		6.96		in	2006		.35		in	2015
Year Precipitation		14.08		18.88		18.44		-4.36		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 25, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		84%		95%		90%		-6%		100%		in	2017		57%		in	1957
Minimum Humidity		61%		73%		56%		+5%		94%		in	1979		24%		in	1981
Average Humidity		73%		84%		73%		-1%		97%		in	1979		41%		in	1957
Maximum Barometer		30.31		30.27		30.04		+00.27		30.52		in	1956		29.62		in	1980
Minimum Barometer		30.13		30.19		29.81		+00.32		30.20		in	2015		29.42		in	1980
Average Barometer		30.22		30.23		29.93		+00.29		30.36		in	1956		29.52		in	1980
Average Wind		8.6		5.3		7.3		+1.3		22.4		in	1967		2.0		in	1997
Direction		SW		NNE		SSW				N					SSE
High Wind Gust		31		14		25		+7		48		in	1967		12		in	1997
Direction		SW		NNE		SSW				NNE					SSE
High Heat Index										91		in	2007
Wind Chill															30		in	1956
Maximum Water Temp		58.5		50.4		57.3		+1.2		64.0		in	2007		49.9		in	2005
Minimum Water Temp		56.1		46.9		53.7		+2.4		59.2		in	2010		46.9		in	2020
Average Water Temp		57.3		48.7		55.5		+1.8		60.5		in	2007		48.7		in	2020
Sunrise/ AM Twilight		5:16:55 AM						4:44:17 AM
Sunset / PM Twilight		8:07:42 PM						8:40:20 PM
Length Of Day		14:50:47
Special Conditions		None
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