Portsmouth Rhode Island Weather Almanac
Wednesday, May 7, 2025
Cloudy & Foggy early, Partly Cloudy Day to Clear PM, Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 7, 2025								Record					Record
Observed Daily Data		2025		2025		Norm		Depart		Highest					Lowest
Maximum Temperature		70		74		62		+8		85		in	1939		45		in	1967
Minimum Temperature		52		53		46		+6		58		in	1930		33		in	1967
Average Temperature		61		64		54		+7		71		in	1930		39		in	1967
Month Avg Max Temperature		66.4		62.1		61.0		+5.4		74.6		in	1930		49.0		in	1917
Month Avg Min Temperature		53.0		45.7		45.1		+7.9		53.6		in	2010		37.7		in	1964
Month Average Temperature		59.9		54.3		53.1		+6.7		63.7		in	1930		43.7		in	1917
High Heat Index										86		in	1930
Low Wind Chill															25		in	1967
Heating Degree Days		4		1		11		-7		26		in	1967		0		in	2000
Month Heating DD		36		75		83		-47		149		in	1917		18		in	2010
Season Heating DD		4851		4806		5256		-405		6330		in	1904		4381		in	2012
Cooling Degree Days		0		0		0		+0		6		in	1930		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		61		58		50		+11		63		in	1977		24		in	1968
Minimum Dew Point		51		50		39		+12		54		in	1998		6		in	1995
Average  Dew Point		56		54		44		+12		58		in	1998		17		in	1995
Month Avg Max Dew Point		59.6		53.1		49.1		+10.4		59.6		in	2025		33.6		in	1952
Month Avg Min Dew Point		49.1		42.6		37.4		+11.7		49.6		in	1998		21.3		in	1974
Month Average Dew Point		54.7		48.1		43.3		+11.4		54.7		in	2025		29.8		in	1952
Precipitation		.00		.00		.11		-.11		1.50		in	1908
One Hour Rain		.00		.00						.31		in	1998
Half Hour Rain		.00		.00						.08		in	2009
Hourly Rain Rate		.00		.00						1.20		in	2009
Month Precipitation		.90		.63		.84		+.06		3.08		in	1922		.00		in	2015
Year Precipitation		13.70		23.55		16.57		-2.87		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 7, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		95%		87%		+12%		100%		in	2013		48%		in	1995
Minimum Humidity		65%		48%		47%		+18%		93%		in	2009		13%		in	1995
Average Humidity		82%		72%		67%		+15%		96%		in	1998		31%		in	1995
Maximum Barometer		30.01		29.83		30.07		-00.06		30.65		in	1992		29.59		in	1951
Minimum Barometer		29.92		29.69		29.83		+00.09		30.49		in	2001		29.35		in	1967
Average Barometer		29.97		29.76		29.95		+00.01		30.54		in	2001		29.54		in	1951
Average Wind		7.1		6.6		7.3		-0.2		20.6		in	2005		2.8		in	1953
Direction		S		S		S				N					SE
High Wind Gust		21		18		24		-3		45		in	2005		12		in	1998
Direction		S		N		S				NNE					W
Maximum Water Temp		56.5		54.3		53.3		+3.2		57.6		in	2010		45.1		in	2020
Minimum Water Temp		53.4		50.5		50.0		+3.4		54.6		in	2010		42.3		in	2020
Average Water Temp		55.0		52.4		51.7		+3.3		56.1		in	2010		43.7		in	2020
Sunrise/ AM Twilight		5:33:49 AM						5:02:29 AM
Sunset / PM Twilight		7:49:44 PM						8:21:00 PM
Length Of Day		14:16:10
Special Conditions		Dense Fog
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