Portsmouth Rhode Island Weather Almanac
Monday, May 26, 2025
Clear early then Partly Cloudy, Light Winds, Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 26								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		68		72		68		+0		91		in	2010		45		in	1967
Minimum Temperature		47		56		51		-4		65		in	2007		37		in	1972
Average Temperature		58		64		60		-2		76		in	2010		43		in	1967
Month Avg Max Temperature		65.7		64.5		64.2		+1.5		69.7		in	1991		56.3		in	2005
Month Avg Min Temperature		51.2		49.5		47.8		+3.4		51.3		in	2012		41.3		in	1956
Month Average Temperature		58.6		57.2		56.0		+2.6		59.3		in	1993		50.1		in	2005
High Heat Index		0		58						99		in	2010
Low Wind Chill		0		0											35		in	1972
Heating Degree Days		7		1		5		+2		22		in	1967		0		in	2020
Month Heating DD		167		206		234		-67		388		in	2005		148		in	1993
Season Heating DD		4982		4937		5407		-425		6514		in	1905		4475		in	2012
Cooling Degree Days		0		0		1		-1		11		in	2010		0		in	All
Month Cooling DD		0		4		6		-6		27		in	2001		0		in	Many
Year Cooling DD		0		4		6		-6		27		in	2001		0		in	Many
Maximum Dew Point		53		66		57		-4		72		in	2010		38		in	1992
Minimum Dew Point		45		56		46		-1		61		in	2012		29		in	1954
Average  Dew Point		49		61		52		-3		65		in	2012		35		in	1980
Month Avg Max Dew Point		56.4		56.3		52.4		+4.0		57.4		in	2004		42.0		in	1967
Month Avg Min Dew Point		46.8		46.3		41.1		+5.8		47.0		in	2012		30.8		in	1967
Month Average Dew Point		51.9		51.5		46.8		+5.1		51.9		in	2025		36.4		in	1967
Precipitation		.00		.00		.10		-.10		2.04		in	1967
One Hour Rain		.00		.00						.34		in	1961
Half Hour Rain		.00		.00						.08		in	2004
Hourly Rain Rate		.00		.00						.67		in	2017
Month Precipitation		7.12		5.71		2.81		+4.31		8.33		in	1967		.35		in	2015
Year Precipitation		19.92		28.63		18.54		+1.38		34.81		in	1983		11.34		in	1905
Snow		0.0		0.0		0.0		+0.0		0.0		in			0.0		in	Many
Snow Depth		0		0		0				0		in			0		in	Many
Month Snow		0.0		0.0		T				1.7		in	1977		0.0		in	Many
Season Snow		11.9		12.7		33.8		21.9		84.1		in	1996		5.0		in	1998
		May 26								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		92%		99%		90%		+2%		100%		in	2017		51%		in	1980
Minimum Humidity		57%		81%		56%		+1%		88%		in	2011		24%		in	2007
Average Humidity		75%		90%		73%		+1%		94%		in	2011		43%		in	1980
Maximum Barometer		30.27		30.02		30.04		+00.23		30.52		in	1987		29.67		in	2005
Minimum Barometer		29.94		29.89		29.82		+00.12		30.30		in	1956		29.44		in	2017
Average Barometer		30.11		29.96		29.93		+00.17		30.37		in	1972		29.59		in	2017
Average Wind		4.8		5.8		6.8		-2.0		15.6		in	1967		2.1		in	2006
Direction		S		S		SSW				N					SE
High Wind Gust		13		19		23		-10		42		in	1984		11		in	1976
Direction		S		S		SSW				SSW					N
Maximum Water Temp		56.8		59.9		58.4		-1.6		68.0		in	2007		50.4		in	2005
Minimum Water Temp		54.7		57.4		55.1		-0.4		59.5		in	2010		49.1		in	2005
Average Water Temp		55.8		58.7		56.8		-1.0		63.7		in	2007		49.8		in	2005
Sunrise/ AM Twilight		5:16:25 AM						4:43:34 AM
Sunset / PM Twilight		8:08:13 PM						8:41:17 PM
Length Of Day		14:52:00
Special Conditions		None
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