Portsmouth Rhode Island Weather Almanac
Thursday, May 1, 2025
Partly Cloudy and Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 1, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		61		60		60		+1		77		in	2001		44		in	1950
Minimum Temperature		45		45		44		+1		54		in	1983		33		in	2000
Average Temperature		53		53		52		+1		64		in	2001		42		in	1950
Month Avg Max Temperature		61.0		60.0		60.0		+1.0		77.0		in	2001		44.0		in	1950
Month Avg Min Temperature		45.0		45.0		44.0		+1.0		54.0		in	1983		33.0		in	2000
Month Average Temperature		53.0		53.0		52.0		+1.0		64.0		in	2001		42.0		in	1950
High Heat Index										77		in	2001
Low Wind Chill		44		42											26		in	2000
Heating Degree Days		12		12		13		-1		23		in	1950		1		in	2001
Month Heating DD		12		12		13		-1		23		in	1950		1		in	2001
Season Heating DD		4827		4743		5186		-359		6271		in	1904		4305		in	2012
Cooling Degree Days		0		0		0		+0		0		in			0		in	All
Month Cooling DD		0		0		0		+0		0		in	2025		0		in	Many
Year Cooling DD		0		0		0		+0		0		in	2025		0		in	Many
Maximum Dew Point		47		50		48		-1		58		in	2020		23		in	1952
Minimum Dew Point		28		41		36		-8		48		in	2020		12		in	1974
Average  Dew Point		38		46		42		-4		53		in	2020		20		in	1978
Month Avg Max Dew Point		47.0		50.0		48.0		-1.0		58.0		in	2020		23.0		in	1952
Month Avg Min Dew Point		28.0		41.0		36.0		-8.0		48.0		in	2020		12.0		in	1974
Month Average Dew Point		38.0		46.0		42.0		-4.0		53.0		in	2020		20.0		in	1978
Precipitation		.00		.10		.13		-.13		1.28		in	1953
One Hour Rain		.00		.04						.45		in	1953
Half Hour Rain		.00		.02						.31		in	2014
Hourly Rain Rate		.00		.17						4.06		in	2014
Month Precipitation		.00		.10		.13		-.13		1.28		in	1953		.00		in	2025
Year Precipitation		12.80		23.02		15.86		-3.06		31.21		in	1983		7.53		in	1985
Snow		0.0		0.0		0.0		+0.0		T		in	1995		0.0		in	Many
Snow Depth		0		0		0.0		+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 1, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		91%		97%		87%		+4%		100%		in	2017		45%		in	1952
Minimum Humidity		37%		71%		48%		-11%		93%		in	2014		19%		in	2007
Average Humidity		64%		84%		68%		-4%		97%		in	2014		34%		in	1952
Maximum Barometer		30.21		30.05		30.08		+00.13		30.57		in	1934		29.50		in	2023
Minimum Barometer		30.07		29.85		29.83		+00.24		30.35		in	2013		29.07		in	2023
Average Barometer		30.14		29.95		29.96		+00.18		30.41		in	2013		29.29		in	2023
Average Wind		6.1		5.9		7.4		-1.3		14.4		in	1983		3.1		in	1989
Direction		SSE		N		S				S					ESE
High Wind Gust		21		16		25		-4		43		in	1974		13		in	2018
Direction		SSE		NNE		S				NW					WNW
Maximum Water Temp		52.5		51.4		51.1		+1.4		58.8		in	2007		43.2		in	2020
Minimum Water Temp		48.4		48.9		48.0		+0.4		53.6		in	2007		40.8		in	2020
Average Water Temp		50.5		50.2		49.6		+0.9		56.2		in	2007		42.0		in	2020
Sunrise/ AM Twilight		5:41:15 AM						5:10:25 AM
Sunset / PM Twilight		7:43:20 PM						8:14:01 PM
Length Of Day		14:02:21
Special Conditions		None
Comments
Hour-by-Hour Weather For May 1, 2025
Climate Weather for May 1
Weather History For May 1
Weather Calendar
Back To Weather Stat Page
Home