Portsmouth Rhode Island Weather Almanac
Sunday, June 22, 2025
Mostly Cloudy, Very Light Rain early then Partly Cloudy, Warmer and Humid
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		Jun 22								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		84		78		76		+8		91		in	2012		57		in	1928
Minimum Temperature		67		66		60		+7		72		in	2012		50		in	1986
Average Temperature		76		72		68		+8		82		in	2012		54		in	1903
Month Avg Max Temperature		74.7		76.5		72.6		+2.1		78.0		in	1957		65.8		in	2003
Month Avg Min Temperature		59.1		59.5		56.5		+2.6		59.7		in	2001		50.7		in	1907
Month Average Temperature		67.1		68.3		64.6		+2.5		68.6		in	1925		58.6		in	1907
High Heat Index		89		80						100		in	2012
Low Wind Chill
Heating Degree Days		0		0		1		-1		11		in	1903		0		in	Many
Month Heating DD		24		5		45		-21		159		in	1907		5		in	2024
Season Heating DD		5026		4952		5504		-478		6619		in	1905		4433		in	1932
Cooling Degree Days		11		7		4		+7		17		in	2012		0		in	All
Month Cooling DD		71		77		44		+27		96		in	1925		2		in	2003
Year Cooling DD		71		77		44		+27		110		in	2001		2		in	2003
Maximum Dew Point		74		73		65		+9		74		in	2025		45		in	1963
Minimum Dew Point		62		66		55		+7		66		in	2024		37		in	1958
Average  Dew Point		68		70		60		+8		70		in	2024		42		in	1963
Month Avg Max Dew Point		65.2		65.7		61.7		+3.5		65.7		in	2024		53.9		in	1965
Month Avg Min Dew Point		55.0		55.3		51.8		+3.1		55.6		in	2010		43.2		in	1958
Month Average Dew Point		60.1		60.5		56.6		+3.5		60.5		in	2024		49.3		in	1958
Precipitation		.01		.79		.12		-.11		2.42		in	1918
One Hour Rain		.01		.78						.78		in	2024
Half Hour Rain		.01		.75						.75		in	2024
Hourly Rain Rate		.00		6.19						6.19		in	2024
Month Precipitation		.81		2.56		2.61		-1.80		8.90		in	1982		.01		in	1949
Year Precipitation		21.20		31.72		21.65		-.45		38.25		in	1998		12.67		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 22								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		93%		99%		92%		+1%		100%		in	2004		55%		in	1966
Minimum Humidity		72%		88%		59%		+13%		92%		in	1987		27%		in	1963
Average Humidity		83%		94%		75%		+7%		96%		in	1987		47%		in	1950
Maximum Barometer		30.09		30.11		30.00		+00.09		30.38		in	2002		29.44		in	1972
Minimum Barometer		29.88		29.97		29.81		+00.07		30.29		in	2002		29.13		in	1972
Average Barometer		29.99		30.04		29.91		+00.08		30.34		in	2002		29.29		in	1972
Average Wind		5.9		4.8		5.9		-0.0		14.3		in	2009		1.6		in	1952
Direction		SSW		SSE		S				NNE					NE
High Wind Gust		24		40		21		+3		44		in	1972		9		in	1998
Direction		SSW		NW		SSW				S					S
Maximum Water Temp		67.8		67.8		66.1		+1.7		71.6		in	2007		60.4		in	2003
Minimum Water Temp		63.3		62.6		62.1		+1.2		67.7		in	2007		57.7		in	2005
Average Water Temp		65.6		65.2		64.1		+1.4		69.6		in	2007		59.5		in	2003
Sunrise/ AM Twilight		5:11:20 AM						4:38:06 AM
Sunset / PM Twilight		8:22:48 PM						8:56:56 PM
Length Of Day		15:11:28
Special Conditions		None
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