Portsmouth Rhode Island Weather Almanac
Friday, May 17, 2024
Cloudy early, Partly Cloudy Day to Cloudy PM, Windy and Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2024
		May 17, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Temperature		69		60		65		+4		81		in	2015		49		in	1994
Minimum Temperature		53		42		49		+4		57		in	2017		35		in	1956
Average Temperature		61		51		57		+4		68		in	1977		46		in	1956
Month Avg Max Temperature		62.0		66.3		62.6		-0.6		69.9		in	1993		53.4		in	1917
Month Avg Min Temperature		47.3		47.6		46.5		+0.8		50.3		in	1930		40.2		in	1967
Month Average Temperature		54.9		57.1		54.6		+0.3		60.4		in	1930		47.2		in	1917
High Heat Index										82		in	2015
Low Wind Chill				37											32		in	1956
Heating Degree Days		4		14		8		-4		19		in	1956		0		in	2017
Month Heating DD		172		138		177		-5		303		in	1917		89		in	1993
Season Heating DD		4903		4617		5381		-478		6426		in	1905		4445		in	2012
Cooling Degree Days		0		0		0		+0		3		in	1977		0		in	2024
Month Cooling DD		0		4		0		+0		27		in	2001		0		in	2024
Year Cooling DD		0		4		0		+0		27		in	2001		0		in	2024
Maximum Dew Point		60		55		54		+6		65		in	2015		36		in	1967
Minimum Dew Point		48		21		42		+6		53		in	1988		21		in	2023
Average  Dew Point		54		38		48		+6		58		in	2015		31		in	1967
Month Avg Max Dew Point		48.5		48.5		50.8		-2.3		56.1		in	2004		40.5		in	1966
Month Avg Min Dew Point		37.5		37.5		39.3		-1.8		45.9		in	1953		28.2		in	1966
Month Average Dew Point		43.2		43.2		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
Half Hour Rain		.00		.00						.19		in	2014
Hourly Rain Rate		.00		.00						3.53		in	2014
Month Precipitation		4.89		.67		1.91		+2.98		6.51		in	2006		.02		in	2015
Year Precipitation		27.81		17.90		17.77		+10.04		33.69		in	1983		10.59		in	1927
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0		0		+0				in
Month Snow		0.0		0.0		0.0		+0.0		1.7		in	1977		0.0		in	Many
Season Snow		12.7		9.1		33.8		-21.1		84.1		in	1996		5.0		in	1998
		May 17, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Humidity		95%		94%		90%		+5%		100%		in	2018		54%		in	1977
Minimum Humidity		65%		28%		52%		+13%		94%		in	1990		22%		in	1993
Average Humidity		80%		61%		71%		+9%		97%		in	1990		44%		in	1977
Maximum Barometer		29.98		30.10		30.06		-00.08		30.50		in	2004		29.49		in	2008
Minimum Barometer		29.87		29.48		29.83		+00.04		30.38		in	2003		29.09		in	1985
Average Barometer		29.93		29.79		29.94		-00.02		30.44		in	2004		29.43		in	2008
Average Wind		12.0		10.9		6.8		+5.2		12.7		in	1967		2.3		in	2018
Direction		NNE		NNW		SE				WSW					NE
High Wind Gust		29		28		24		+6		39		in	1954		9		in	2018
Direction		NE		NNW		SE				W					SSE
Maximum Water Temp		56.8		59.4		55.7		+1.1		59.4		in	2023		50.9		in	2020
Minimum Water Temp		53.4		54.1		52.2		+1.2		54.9		in	1998		46.4		in	2020
Average Water Temp		55.1		56.8		54.0		+1.1		56.8		in	2023		48.7		in	2020
Sunrise/ AM Twilight		5:23:23 AM						4:51:12 AM
Sunset / PM Twilight		8:00:10 PM						8:32:11 PM
Length Of Day		14:36:47
Special Conditions		None
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