Portsmouth Rhode Island Weather Almanac
Sunday, May 25, 2025
Partly Cloudy, Very Light Shower early then Cloudy, Light Winds, Continued Cool
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 25								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		62		72		68		-6		90		in	2007		46		in	1925
Minimum Temperature		48		55		51		-3		60		in	2007		34		in	1956
Average Temperature		55		64		60		-5		75		in	2007		44		in	1925
Month Avg Max Temperature		65.6		64.2		64.0		+1.6		69.2		in	1991		56.4		in	2005
Month Avg Min Temperature		51.4		49.2		47.6		+3.7		51.4		in	2025		41.3		in	1956
Month Average Temperature		58.6		57.0		55.8		+2.8		59.3		in	1993		50.1		in	2005
High Heat Index										91		in	2007
Low Wind Chill															30		in	1956
Heating Degree Days		10		1		5		+5		21		in	1925		0		in	2016
Month Heating DD		160		205		229		-69		373		in	2005		144		in	1993
Season Heating DD		4975		4936		5402		-427		6509		in	1905		4475		in	2012
Cooling Degree Days		0		0		1		-1		10		in	2007		0		in	All
Month Cooling DD		0		4		5		-5		27		in	2001		0		in	Many
Year Cooling DD		0		4		5		-5		27		in	2001		0		in	Many
Maximum Dew Point		50		56		56		-6		68		in	2010		35		in	1956
Minimum Dew Point		45		49		46		-1		58		in	1979		27		in	1972
Average  Dew Point		48		53		51		-3		62		in	2010		32		in	1956
Month Avg Max Dew Point		56.5		56.0		52.2		+4.3		57.6		in	2004		42.0		in	1967
Month Avg Min Dew Point		46.9		45.9		40.9		+6.0		46.9		in	2025		30.6		in	1967
Month Average Dew Point		52.0		51.2		46.6		+5.4		52.0		in	2025		36.3		in	1967
Precipitation		T		.00		.10		-.10		2.85		in	1967
One Hour Rain		T		.00						.67		in	1978
Half Hour Rain		.00		.00						.42		in	2017
Hourly Rain Rate		.00		.00						5.65		in	2017
Month Precipitation		7.12		5.71		2.71		+4.41		7.12		in	2025		.35		in	2015
Year Precipitation		19.92		28.63		18.44		+1.48		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 25								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		91%		94%		90%		+1%		100%		in	2017		57%		in	1957
Minimum Humidity		64%		51%		56%		+8%		94%		in	1979		24%		in	1981
Average Humidity		78%		73%		73%		+4%		97%		in	1979		41%		in	1957
Maximum Barometer		30.07		29.92		30.04		+00.03		30.52		in	1956		29.62		in	1980
Minimum Barometer		29.94		29.82		29.82		+00.12		30.34		in	2022		29.42		in	1980
Average Barometer		30.01		29.87		29.93		+00.07		30.38		in	2022		29.52		in	1980
Average Wind		5.5		5.9		7.3		-1.8		22.4		in	1967		2.0		in	1997
Direction		NW		S		SSW				N					SSE
High Wind Gust		20		19		24		-4		48		in	1967		12		in	1997
Direction		NW		S		SSW				NNE					SSE
Maximum Water Temp		55.6		60.3		57.5		-1.9		64.0		in	2007		49.9		in	2005
Minimum Water Temp		54.7		56.5		54.1		+0.6		59.2		in	2010		46.9		in	2020
Average Water Temp		55.2		58.4		55.8		-0.7		60.5		in	2007		48.7		in	2020
Sunrise/ AM Twilight		5:17:04 AM						4:44:17 AM
Sunset / PM Twilight		8:07:21 PM						8:40:20 PM
Length Of Day		14:50:30
Special Conditions		None
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