Portsmouth Rhode Island Weather Almanac
Wednesday, May 14, 2025
Mostly Cloudy early, Partly Cloudy Day to Mostly PM, Light Winds, Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 14								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		74		66		64		+10		81		in	1991		48		in	1931
Minimum Temperature		53		49		48		+5		59		in	2022		35		in	1996
Average Temperature		64		58		56		+8		68		in	2022		45		in	1931
Month Avg Max Temperature		67.9		61.5		62.1		+5.7		72.1		in	2001		52.2		in	1917
Month Avg Min Temperature		51.6		45.8		46.1		+5.5		51.6		in	2025		39.6		in	1967
Month Average Temperature		59.9		53.9		54.1		+5.7		61.2		in	1930		46.2		in	1917
High Heat Index										80		in	1991
Low Wind Chill															34		in	1996
Heating Degree Days		1		7		9		-8		20		in	1931		0		in	2022
Month Heating DD		72		155		152		-80		263		in	1917		65		in	1930
Season Heating DD		4887		4886		5325		-438		6389		in	1905		4433		in	2012
Cooling Degree Days		0		0		0		+0		3		in	2022		0		in	All
Month Cooling DD		0		0		0		+0		27		in	2001		0		in	Many
Year Cooling DD		0		0		0		+0		27		in	2001		0		in	Many
Maximum Dew Point		61		57		52		+9		67		in	2022		33		in	1977
Minimum Dew Point		49		47		41		+8		58		in	2022		17		in	1994
Average  Dew Point		55		52		47		+8		63		in	2022		27		in	1994
Month Avg Max Dew Point		58.0		52.4		50.3		+7.7		58.0		in	2025		39.9		in	1952
Month Avg Min Dew Point		46.1		42.1		38.7		+7.4		46.1		in	2025		27.6		in	1966
Month Average Dew Point		52.4		47.5		44.5		+7.9		52.4		in	2025		34.0		in	1966
Precipitation		.00		.00		.11		-.11		1.48		in	2006
One Hour Rain		.00		.00						.51		in	2006
Half Hour Rain		.00		.00						.39		in	2006
Hourly Rain Rate		.00		.00						4.80		in	2006
Month Precipitation		2.90		1.67		1.61		+1.29		6.08		in	2006		T		in	2001
Year Precipitation		15.70		24.59		17.34		-1.64		31.82		in	1983		10.18		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 14								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		93%		94%		90%		+3%		100%		in	2022		52%		in	1951
Minimum Humidity		60%		71%		52%		+8%		93%		in	2006		18%		in	1994
Average Humidity		77%		83%		71%		+6%		97%		in	2006		36%		in	1994
Maximum Barometer		30.21		30.09		30.09		+00.13		30.55		in	1986		29.55		in	2002
Minimum Barometer		30.04		29.97		29.86		+00.18		30.26		in	2014		29.32		in	2002
Average Barometer		30.13		30.03		29.97		+00.15		30.34		in	1951		29.44		in	2002
Average Wind		4.9		9.1		6.5		-1.6		12.3		in	1971		2.9		in	1992
Direction		ESE		SSW		SSE				NW					SW
High Wind Gust		16		26		23		-7		36		in	2017		13		in	2004
Direction		ESE		S		SW				NW					S
Maximum Water Temp		57.9		57.7		54.7		+3.2		60.1		in	2007		47.8		in	2020
Minimum Water Temp		55.8		54.9		51.7		+4.1		56.8		in	2025		44.2		in	2020
Average Water Temp		56.9		56.3		53.2		+3.7		58.2		in	2007		46.0		in	2020
Sunrise/ AM Twilight		5:26:14 AM						4:54:18 AM
Sunset / PM Twilight		7:56:57 PM						8:28:55 PM
Length Of Day		14:30:58
Special Conditions		None
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