Portsmouth Rhode Island Weather Almanac
Sunday, May 11, 2025
Clear and Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 11, 2025								Record					Record
Observed Daily Data		2025		2025		Norm		Depart		Highest					Lowest
Maximum Temperature		72		58		63		+9		82		in	2001		46		in	1919
Minimum Temperature		48		41		47		+1		59		in	2015		34		in	1900
Average Temperature		60		50		55		+5		69		in	2001		44		in	1963
Month Avg Max Temperature		67.3		61.3		61.6		+5.6		72.6		in	2001		51.1		in	1917
Month Avg Min Temperature		52.0		45.9		45.6		+6.4		52.0		in	2025		39.1		in	1917
Month Average Temperature		59.7		53.9		53.7		+6.0		62.1		in	1930		45.4		in	1917
High Heat Index										81		in	1993
Low Wind Chill				37											32		in	1900
Heating Degree Days		5		15		10		-5		21		in	1963		0		in	2015
Month Heating DD		58		122		124		-66		216		in	1917		44		in	1930
Season Heating DD		4873		4853		5297		-424		6359		in	1905		4418		in	2012
Cooling Degree Days		0		0		0		+0		4		in	2001		0		in	All
Month Cooling DD		0		0		0		+0		23		in	2001		0		in	Many
Year Cooling DD		0		0		0		+0		23		in	2001		0		in	Many
Maximum Dew Point		51		45		52		-1		65		in	2015		32		in	1966
Minimum Dew Point		28		36		40		-12		59		in	2015		19		in	1966
Average  Dew Point		40		41		46		-6		62		in	2015		26		in	1966
Month Avg Max Dew Point		58.5		52.4		49.8		+8.6		58.5		in	2025		37.8		in	1952
Month Avg Min Dew Point		47.5		42.3		38.2		+9.3		48.6		in	1998		26.2		in	1968
Month Average Dew Point		53.3		47.6		44.0		+9.3		53.3		in	2025		32.7		in	1968
Precipitation		.00		.00		.11		-.11		1.54		in	1989
One Hour Rain		.00		.00						.41		in	1951
Half Hour Rain		.00		.00						.21		in	2013
Hourly Rain Rate		.00		.00						2.70		in	2013
Month Precipitation		2.90		1.64		1.28		+1.62		4.71		in	1989		.00		in	2015
Year Precipitation		15.70		24.56		17.01		-1.31		31.68		in	1983		10.12		in	1927
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 11, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		88%		92%		88%		-0%		100%		in	2015		55%		in	1966
Minimum Humidity		22%		54%		50%		-28%		97%		in	1989		22%		in	2025
Average Humidity		55%		73%		69%		-14%		99%		in	1989		40%		in	1966
Maximum Barometer		30.31		29.90		30.06		+00.25		30.43		in	1966		29.62		in	1954
Minimum Barometer		30.05		29.82		29.83		+00.22		30.30		in	2010		29.41		in	1990
Average Barometer		30.18		29.86		29.95		+00.23		30.36		in	2010		29.57		in	1954
Average Wind		7.1		8.6		7.6		-0.5		14.1		in	1986		3.1		in	2007
Direction		NNW		NNE		SSW				NNE					SSE
High Wind Gust		31		24		25		+6		43		in	1945		14		in	2007
Direction		NNW		NNE		SSE				NW					S
Maximum Water Temp		57.6		52.9		54.0		+3.6		59.5		in	2007		44.4		in	2020
Minimum Water Temp		54.9		51.1		50.8		+4.1		55.7		in	2013		43.2		in	2020
Average Water Temp		56.3		52.0		52.4		+3.9		56.5		in	2013		43.8		in	2020
Sunrise/ AM Twilight		5:29:20 AM						4:57:39 AM
Sunset / PM Twilight		7:53:54 PM						8:25:34 PM
Length Of Day		14:24:49
Special Conditions		Haze
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