Portsmouth Rhode Island Weather Almanac
Thursday, May 22, 2025
Cloudy, Very Heavy Rain and Fog, Windy and Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 22								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		47		76		67		-20		90		in	1992		47		in	2025
Minimum Temperature		45		53		50		-5		61		in	1911		39		in	1907
Average Temperature		46		65		59		-13		73		in	1992		46		in	2025
Month Avg Max Temperature		66.3		62.7		63.5		+2.8		69.0		in	1918		56.9		in	1917
Month Avg Min Temperature		52.0		48.2		47.2		+4.8		52.0		in	2025		41.6		in	1956
Month Average Temperature		59.3		55.7		55.4		+3.9		59.4		in	1930		49.9		in	1917
High Heat Index										87		in	1992
Low Wind Chill		36													36		in	2025
Heating Degree Days		19		0		6		+13		19		in	2025		0		in	2024
Month Heating DD		126		204		212		-86		332		in	1917		126		in	2025
Season Heating DD		4941		4935		5385		-444		6478		in	1905		4467		in	2012
Cooling Degree Days		0		0		1		-1		8		in	1992		0		in	All
Month Cooling DD		0		0		2		-2		27		in	2001		0		in	Many
Year Cooling DD		0		0		2		-2		27		in	2001		0		in	Many
Maximum Dew Point		46		66		55		-9		70		in	2022		41		in	1967
Minimum Dew Point		43		52		44		-1		59		in	2012		30		in	1950
Average  Dew Point		45		59		50		-5		64		in	2022		36		in	1967
Month Avg Max Dew Point		57.3		54.9		51.7		+5.6		57.5		in	2004		41.9		in	1967
Month Avg Min Dew Point		47.2		44.9		40.3		+6.9		47.2		in	2025		30.1		in	1967
Month Average Dew Point		52.5		50.1		46.0		+6.5		52.5		in	2025		36.0		in	1967
Precipitation		2.45		.00		.10		+2.35		2.45		in	2025
One Hour Rain		.31		.00						.31		in	2025
Half Hour Rain		.16		.00						.16		in	2025
Hourly Rain Rate		.68		.00						1.44		in	2014
Month Precipitation		6.97		5.04		2.41		+4.56		6.97		in	2025		.25		in	1939
Year Precipitation		19.77		27.96		18.14		+1.63		34.36		in	1983		10.81		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 22								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		97%		98%		91%		+6%		100%		in	2017		66%		in	1998
Minimum Humidity		87%		67%		53%		+34%		93%		in	2012		22%		in	1992
Average Humidity		92%		83%		72%		+20%		97%		in	1986		46%		in	1978
Maximum Barometer		30.01		30.01		30.08		-00.07		30.62		in	1936		29.65		in	2008
Minimum Barometer		29.61		29.90		29.83		-00.22		30.25		in	2002		29.36		in	1948
Average Barometer		29.81		29.96		29.96		-00.15		30.31		in	2007		29.57		in	1973
Average Wind		13.5		7.9		6.8		+6.7		15.2		in	1956		1.7		in	1994
Direction		NE		SSW		SSW				SSW					S
High Wind Gust		38		27		23		+15		52		in	1956		11		in	1999
Direction		N		SSW		N				SSW					SE
Maximum Water Temp		56.1		58.3		56.8		-0.7		64.4		in	2007		51.8		in	2005
Minimum Water Temp		54.0		55.9		53.6		+0.4		59.4		in	2007		46.0		in	2020
Average Water Temp		55.1		57.1		55.2		-0.2		61.9		in	2007		49.3		in	2020
Sunrise/ AM Twilight		5:19:12 AM						4:46:38 AM
Sunset / PM Twilight		8:04:40 PM						8:37:23 PM
Length Of Day		14:45:41
Special Conditions		Fog
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