Portsmouth Rhode Island Weather Almanac
Wednesday, May 17, 2023
Partly Cloudy early then Clear, Windy and Colder
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		May 17, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		60		70		65		-5		81		in	2015		49		in	1994
Minimum Temperature		42		54		49		-7		57		in	2017		35		in	1956
Average Temperature		51		62		57		-6		68		in	1977		46		in	1956
Month Avg Max Temperature		66.3		63.6		62.6		+3.6		69.9		in	1993		53.4		in	1917
Month Avg Min Temperature		47.6		48.1		46.5		+1.1		50.3		in	1930		40.2		in	1967
Month Average Temperature		57.1		56.2		54.6		+2.5		60.4		in	1930		47.2		in	1917
High Heat Index										82		in	2015
Low Wind Chill		37													32		in	1956
Heating Degree Days		14		3		8		+6		19		in	1956		0		in	2017
Month Heating DD		138		153		177		-39		303		in	1917		89		in	1993
Season Heating DD		4617		4935		5350		-733		6426		in	1905		4445		in	2012
Cooling Degree Days		0		0		0		-0		3		in	1977				in
Month Cooling DD		4		3		0		+4		27		in	2001		0		in	2021
Year Cooling DD		9		3		0		+9		27		in	2001		0		in	2021
Maximum Dew Point		55		56		54		+1		65		in	2015		36		in	1967
Minimum Dew Point		21		42		42		-21		53		in	1988		21		in	2023
Average  Dew Point		38		49		48		-10		58		in	2015		31		in	1967
Month Avg Max Dew Point		48.5		51.4		50.8		-2.3		56.1		in	2004		40.5		in	1966
Month Avg Min Dew Point		37.5		40.0		39.3		-1.8		45.9		in	1953		28.2		in	1966
Month Average Dew Point		43.2		46.0		45.1		-1.9		50.3		in	2018		34.4		in	1966
Precipitation		.00		.00		.10		-.10		1.65		in	1916
One Hour Rain		.00		.00						.41		in	1976
Hourly Rain Rate		.00		.00						3.53		in	2014
Month Precipitation		.67		1.45		1.91		-1.24		6.51		in	2006		.02		in	2015
Year Precipitation		17.90		17.85		17.64		+.26		33.69		in	1983		10.59		in	1927
Snow		0.0		0.0		0.0		+0.0		0.0		in					in
Snow Depth		0		0						0		in					in
Month Snow		0.0		0.0		0.0		+0.0		1.7		in	1977		0.0		in	2023
Season Snow		9.1		34.7		33.5		-24.4		84.1		in	1996		5.0		in	1998
		May 17, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		94%		98%		90%		+4%		100%		in	2018		54%		in	1977
Minimum Humidity		28%		45%		52%		-24%		94%		in	1990		22%		in	1993
Average Humidity		61%		72%		71%		-10%		97%		in	1990		44%		in	1977
Maximum Barometer		30.10		29.81		30.06		+00.04		30.50		in	2004		29.49		in	2008
Minimum Barometer		29.48		29.58		29.83		-00.35		30.38		in	2003		29.09		in	1985
Average Barometer		29.79		29.70		29.94		-00.15		30.44		in	2004		29.43		in	2008
Average Wind		10.9		8.8		6.8		+4.1		12.7		in	1967		2.3		in	2018
Direction		NNW		WNW		SE				WSW					NE
High Wind Gust		28		32		24		+5		39		in	1954		9		in	2018
Direction		NNW		SSW		SE				W					SSE
Maximum Water Temp		59.4		56.8		55.7		+3.7		59.4		in	2023		50.9		in	2020
Minimum Water Temp		54.1		53.6		52.2		+1.9		54.9		in	1998		46.4		in	2020
Average Water Temp		56.8		55.2		53.9		+2.8		56.8		in	2023		48.7		in	2020
Sunrise/ AM Twilight		5:24:04 AM						4:51:12 AM
Sunset / PM Twilight		7:59:25 PM						8:32:11 PM
Length Of Day		14:35:21
Special Conditions		None
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