Portsmouth Rhode Island Weather Almanac
Friday, May 23, 2025
Cloudy, Light Rain early and 7pm, Windy and Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 23								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		56		73		67		-11		90		in	1992		51		in	1940
Minimum Temperature		44		57		51		-7		63		in	2021		42		in	1935
Average Temperature		50		65		59		-9		75		in	2021		49		in	1940
Month Avg Max Temperature		65.8		63.2		63.7		+2.2		69.2		in	1918		57.1		in	2005
Month Avg Min Temperature		51.7		48.6		47.3		+4.3		51.7		in	2025		41.7		in	1967
Month Average Temperature		58.9		56.1		55.5		+3.3		59.6		in	1930		50.1		in	1917
High Heat Index										91		in	2021
Low Wind Chill		37													37		in	2025
Heating Degree Days		15		0		6		+9		16		in	1940		0		in	2024
Month Heating DD		141		204		218		-77		342		in	1917		133		in	1918
Season Heating DD		4956		4935		5391		-435		6488		in	1905		4467		in	2012
Cooling Degree Days		0		0		1		-1		10		in	2021		0		in	All
Month Cooling DD		0		0		3		-3		27		in	2001		0		in	Many
Year Cooling DD		0		0		3		-3		27		in	2001		0		in	Many
Maximum Dew Point		49		69		56		-7		70		in	2021		38		in	1971
Minimum Dew Point		43		56		45		-2		59		in	2013		26		in	1981
Average  Dew Point		46		63		50		-4		63		in	2024		32		in	1971
Month Avg Max Dew Point		57.0		55.5		51.9		+5.1		57.7		in	2004		41.9		in	1967
Month Avg Min Dew Point		47.0		45.3		40.5		+6.5		47.0		in	2025		30.2		in	1967
Month Average Dew Point		52.3		50.7		46.2		+6.1		52.3		in	2025		36.0		in	1967
Precipitation		.09		.67		.10		-.01		2.33		in	1979
One Hour Rain		.06		.39						.99		in	1994
Half Hour Rain		.05		.36						.36		in	2024
Hourly Rain Rate		.13		3.27						3.27		in	2024
Month Precipitation		7.06		5.71		2.51		+4.55		7.06		in	2025		.35		in	2015
Year Precipitation		19.86		28.63		18.24		+1.62		34.80		in	1983		11.13		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 23								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		97%		99%		89%		+8%		100%		in	2017		55%		in	1971
Minimum Humidity		73%		84%		54%		+19%		90%		in	2013		23%		in	1971
Average Humidity		85%		92%		72%		+13%		95%		in	2013		39%		in	1971
Maximum Barometer		29.85		29.91		30.05		-00.20		30.49		in	2007		29.53		in	1951
Minimum Barometer		29.61		29.81		29.85		-00.24		30.40		in	2007		29.40		in	1951
Average Barometer		29.73		29.86		29.95		-00.22		30.45		in	2007		29.47		in	1951
Average Wind		9.5		5.8		6.5		+3.0		13.1		in	1985		1.2		in	1994
Direction		NW		SSW		NW				SE					S
High Wind Gust		32		19		22		+10		42		in	1994		12		in	2010
Direction		NW		SSW		SSE				ENE					ESE
Maximum Water Temp		56.0		57.9		56.8		-0.8		64.4		in	2007		51.8		in	2005
Minimum Water Temp		53.8		55.0		53.6		+0.2		59.4		in	2007		46.0		in	2020
Average Water Temp		54.9		56.5		55.2		-0.3		61.9		in	2007		49.3		in	2020
Sunrise/ AM Twilight		5:18:28 AM						4:45:49 AM
Sunset / PM Twilight		8:05:35 PM						8:38:23 PM
Length Of Day		14:47:20
Special Conditions		None
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