Portsmouth Rhode Island Weather Almanac
Monday, May 5, 2025
Cloudy, Rain and Fog, Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 5, 2025								Record					Record
Observed Daily Data		2025		2025		Norm		Depart		Highest					Lowest
Maximum Temperature		67		52		61		+6		78		in	1949		42		in	1917
Minimum Temperature		58		45		45		+13		58		in	2025		34		in	1920
Average Temperature		63		49		53		+10		65		in	2010		40		in	1917
Month Avg Max Temperature		66.6		58.4		60.6		+6.0		80.4		in	2001		49.8		in	1917
Month Avg Min Temperature		52.4		43.8		44.8		+7.6		54.2		in	2010		36.6		in	1964
Month Average Temperature		59.6		51.4		52.8		+6.8		67.4		in	2001		44.4		in	1917
High Heat Index										78		in	1949
Low Wind Chill				41											35		in	2016
Heating Degree Days		2		16		12		-10		25		in	1917		0		in	2010
Month Heating DD		27		68		61		-34		103		in	1917		7		in	2001
Season Heating DD		4842		4799		5234		-392		6316		in	1904		4360		in	2012
Cooling Degree Days		0		0		0		+0		0		in			0		in	All
Month Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Year Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Maximum Dew Point		65		48		49		+16		65		in	2025		33		in	1952
Minimum Dew Point		56		42		38		+18		56		in	2025		13		in	1969
Average  Dew Point		61		45		44		+17		61		in	2025		27		in	1974
Month Avg Max Dew Point		59.0		50.2		48.8		+10.2		59.0		in	2025		29.2		in	1952
Month Avg Min Dew Point		47.4		40.0		37.0		+10.4		48.0		in	1998		17.4		in	1974
Month Average Dew Point		53.6		45.4		43.0		+10.6		53.6		in	2025		26.0		in	1952
Precipitation		.49		.24		.12		+.37		1.73		in	1922
One Hour Rain		.27		.12						.51		in	1955
Half Hour Rain		.18		.10						.25		in	2017
Hourly Rain Rate		2.12		.31						3.00		in	2017
Month Precipitation		.68		.34		.61		+.07		3.08		in	1922		.00		in	2015
Year Precipitation		13.48		23.26		16.34		-2.86		31.53		in	1983		9.78		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				T		in	1995		0.0		in	Many
Season Snow		11.9		12.7		33.8		21.9		84.1		in	1996		5.0		in	1998
		May 5, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		98%		99%		88%		+10%		100%		in	2017		61%		in	1952
Minimum Humidity		88%		85%		51%		+37%		90%		in	2021		17%		in	1969
Average Humidity		93%		92%		69%		+24%		95%		in	1998		43%		in	1952
Maximum Barometer		30.25		30.37		30.06		+00.19		30.53		in	2005		29.63		in	1980
Minimum Barometer		30.06		30.15		29.84		+00.22		30.43		in	2005		29.37		in	1990
Average Barometer		30.16		30.26		29.95		+00.20		30.48		in	2005		29.57		in	1980
Average Wind		5.4		7.4		7.5		-2.1		15.5		in	1966		1.7		in	2012
Direction		E		SSE		SSE				SW					SE
High Wind Gust		16		20		25		-9		46		in	1966		10		in	2012
Direction		E		SSE		SSE				SW					SE
Maximum Water Temp		54.0		51.4		52.3		+1.7		60.3		in	2007		46.9		in	2020
Minimum Water Temp		51.6		50.4		49.1		+2.5		54.3		in	2010		42.6		in	2020
Average Water Temp		52.8		50.9		50.7		+2.1		56.1		in	2010		44.8		in	2020
Sunrise/ AM Twilight		5:36:12 AM						5:05:02 AM
Sunset / PM Twilight		7:47:37 PM						8:18:41 PM
Length Of Day		14:11:40
Special Conditions		Fog
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