Portsmouth Rhode Island Weather Almanac
Monday, June 16, 2025
Mostly Cloudy early, Partly Cloudy Day to Mostly Cloudy PM, Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		Jun 16								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		74		73		74		+0		93		in	1957		55		in	1903
Minimum Temperature		57		55		58		-1		69		in	2001		47		in	1971
Average Temperature		66		64		66		+0		80		in	1957		52		in	1903
Month Avg Max Temperature		73.4		74.9		71.7		+1.8		78.8		in	1925		62.8		in	1907
Month Avg Min Temperature		57.4		57.6		55.5		+1.9		59.8		in	1899		47.8		in	1907
Month Average Temperature		65.7		66.5		63.7		+2.0		69.1		in	1925		55.4		in	1907
High Heat Index		74		72						99		in	1956
Low Wind Chill															0		in	1900
Heating Degree Days		0		1		1		-1		13		in	1903		0		in	Many
Month Heating DD		24		5		39		-15		156		in	1907		2		in	1899
Season Heating DD		5026		4952		5498		-472		6601		in	1905		4414		in	1932
Cooling Degree Days		1		0		3		-2		15		in	1957		0		in	All
Month Cooling DD		35		29		25		+10		81		in	1984		0		in	Many
Year Cooling DD		35		29		25		+10		86		in	1991		0		in	Many
Maximum Dew Point		64		56		63		+1		75		in	1956		41		in	1958
Minimum Dew Point		54		47		53		+1		68		in	2001		32		in	1964
Average  Dew Point		59		52		58		+1		71		in	2001		38		in	1958
Month Avg Max Dew Point		63.7		63.4		60.8		+2.9		65.6		in	1996		51.5		in	1988
Month Avg Min Dew Point		52.9		52.8		50.8		+2.1		55.3		in	2005		42.5		in	1958
Month Average Dew Point		58.3		58.1		55.7		+2.6		60.2		in	1996		47.4		in	1988
Precipitation		.00		.00		.12		-.12		1.37		in	1906
One Hour Rain		.00		.00						.30		in	2008
Half Hour Rain		.00		.00						.16		in	2008
Hourly Rain Rate		.00		.00						2.43		in	2008
Month Precipitation		.69		.77		1.89		-1.20		8.53		in	1998		T		in	1949
Year Precipitation		21.08		29.93		20.93		+.15		38.05		in	1998		12.64		in	1957
Snow		0.0		0.0		#N/A		#N/A		0.0		in	1900		0.0		in	Many
Snow Depth		0		0		0				0		in	2020		0		in	Many
Month Snow		0.0		0.0		T				#N/A		in	#N/A		0.0		in	Many
Season Snow		11.9		12.7		33.8		21.9		84.1		in	1996		5.0		in	1998
		Jun 16								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		96%		83%		90%		+6%		100%		in	2018		62%		in	1958
Minimum Humidity		52%		43%		55%		-3%		91%		in	1974		25%		in	1987
Average Humidity		74%		63%		73%		+1%		96%		in	1974		44%		in	1958
Maximum Barometer		30.18		30.27		30.04		+00.14		30.40		in	2020		29.48		in	1958
Minimum Barometer		30.08		30.12		29.86		+00.22		30.31		in	2020		29.30		in	1958
Average Barometer		30.13		30.20		29.95		+00.18		30.36		in	2020		29.39		in	1958
Average Wind		5.9		6.0		5.7		+0.2		13.6		in	1986		1.6		in	1990
Direction		E		S		S				SSW					SSE
High Wind Gust		20		17		20		-0		38		in	1986		11		in	2016
Direction		SE		S		SSW				SSW					SSW
Maximum Water Temp		65.5		66.7		64.3		+1.2		69.8		in	2007		59.3		in	2003
Minimum Water Temp		62.8		63.7		60.9		+1.9		66.2		in	2007		56.2		in	2006
Average Water Temp		64.2		65.2		62.6		+1.6		68.0		in	2007		58.3		in	2003
Sunrise/ AM Twilight		5:10:27 AM						4:36:57 AM
Sunset / PM Twilight		8:21:11 PM						8:55:27 PM
Length Of Day		15:10:44
Special Conditions		None
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