Portsmouth Rhode Island Weather Almanac
Saturday, May 24, 2025
Mostly Cloudy, Late Afternoon Light Rain, Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 24								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		63		79		68		-5		85		in	1936		50		in	2005
Minimum Temperature		48		59		51		-3		61		in	1977		39		in	1956
Average Temperature		56		69		59		-3		72		in	1975		47		in	2005
Month Avg Max Temperature		65.7		63.8		63.8		+1.9		69.0		in	1918		56.8		in	2005
Month Avg Min Temperature		51.5		49.0		47.5		+4.0		51.5		in	2025		41.6		in	1956
Month Average Temperature		58.8		56.7		55.7		+3.1		59.4		in	1930		50.3		in	2005
High Heat Index				79						85		in	1936
Low Wind Chill															36		in	2005
Heating Degree Days		9		0		6		+3		18		in	2005		0		in	2024
Month Heating DD		150		204		224		-74		354		in	2005		141		in	1918
Season Heating DD		4965		4935		5397		-432		6499		in	1905		4470		in	2012
Cooling Degree Days		0		4		1		-1		7		in	1975		0		in	All
Month Cooling DD		0		4		4		-4		27		in	2001		0		in	Many
Year Cooling DD		0		4		4		-4		27		in	2001		0		in	Many
Maximum Dew Point		53		66		56		-3		66		in	2024		36		in	1965
Minimum Dew Point		47		56		45		+2		58		in	2011		19		in	1956
Average  Dew Point		50		61		51		-1		61		in	2024		29		in	1956
Month Avg Max Dew Point		56.8		56.0		52.0		+4.8		57.6		in	2004		41.7		in	1967
Month Avg Min Dew Point		47.0		45.8		40.7		+6.3		47.0		in	2025		30.3		in	1967
Month Average Dew Point		52.2		51.1		46.4		+5.8		52.2		in	2025		36.0		in	1967
Precipitation		.06		.00		.10		-.04		1.33		in	2001
One Hour Rain		.04		.00						.53		in	1999
Half Hour Rain		.02		.00						.22		in	2011
Hourly Rain Rate		.40		.00						3.51		in	2011
Month Precipitation		7.12		5.71		2.61		+4.51		7.12		in	2025		.35		in	2015
Year Precipitation		19.92		28.63		18.34		+1.58		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 24								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		95%		99%		90%		+5%		100%		in	2013		62%		in	1965
Minimum Humidity		66%		46%		55%		+11%		95%		in	1979		13%		in	1981
Average Humidity		81%		73%		73%		+8%		98%		in	1979		41%		in	1981
Maximum Barometer		29.94		29.86		30.05		-00.11		30.43		in	2007		29.49		in	1951
Minimum Barometer		29.81		29.74		29.83		-00.02		30.24		in	2022		29.39		in	1951
Average Barometer		29.88		29.80		29.94		-00.06		30.31		in	2007		29.44		in	1951
Average Wind		5.8		5.0		6.7		-0.9		13.9		in	2003		2.0		in	1997
Direction		W		SSW		SSW				N					SSE
High Wind Gust		24		24		22		+2		44		in	1988		11		in	1997
Direction		W		SSW		NNE				NW					SE
Maximum Water Temp		55.6		59.2		57.1		-1.5		65.5		in	2007		49.8		in	2020
Minimum Water Temp		54.5		55.9		53.8		+0.7		59.5		in	2007		45.9		in	2020
Average Water Temp		55.1		57.6		55.5		-0.4		62.5		in	2007		47.9		in	2020
Sunrise/ AM Twilight		5:17:45 AM						4:45:02 AM
Sunset / PM Twilight		8:06:28 PM						8:39:22 PM
Length Of Day		14:48:56
Special Conditions		None
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