Portsmouth Rhode Island Weather Almanac
Monday, May 29, 2023
Clear, Windy and Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		May 29, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		69		74		69		+0		90		in	1931		48		in	2021
Minimum Temperature		47		56		52		-5		64		in	2016		40		in	1900
Average Temperature		58		65		61		-3		75		in	1931		46		in	2021
Month Avg Max Temperature		66.5		66.2		64.7		+1.8		71.2		in	1991		57.4		in	1917
Month Avg Min Temperature		47.7		50.2		48.2		-0.5		52.2		in	2012		41.8		in	1967
Month Average Temperature		57.3		58.5		56.5		+0.8		60.2		in	1991		50.3		in	1967
High Heat Index										89		in	1931
Low Wind Chill															36		in	2021
Heating Degree Days		7		0		4		+3		19		in	2021		0		in	2022
Month Heating DD		227		203		247		-20		426		in	1967		164		in	1918
Season Heating DD		4706		4985		5420		-714		6518		in	1905		4475		in	2012
Cooling Degree Days		0		0		1		-1		10		in	1931				in
Month Cooling DD		4		14		9		-5		41		in	1991		0		in	2013
Year Cooling DD		9		14		9		+0		41		in	1991		0		in	2013
Maximum Dew Point		52		62		58		-6		70		in	2018		40		in	1964
Minimum Dew Point		42		52		47		-5		62		in	2011		31		in	2004
Average  Dew Point		47		57		53		-6		65		in	2012		38		in	1964
Month Avg Max Dew Point		52.3		55.2		52.9		-0.6		57.6		in	2004		42.2		in	1967
Month Avg Min Dew Point		39.4		44.0		41.7		-2.3		48.4		in	2012		31.3		in	1967
Month Average Dew Point		46.2		49.9		47.3		-1.2		53.1		in	2012		36.7		in	1967
Precipitation		.00		.00		.10		-.10		1.74		in	2021
One Hour Rain		.00		.00						.47		in	1982
Hourly Rain Rate		.00		.00						2.45		in	2013
Month Precipitation		3.44		2.80		3.11		+.33		9.19		in	1948		.35		in	2015
Year Precipitation		20.67		19.20		18.84		+1.83		35.09		in	1983		11.43		in	1905
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 29, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		89%		95%		91%		-2%		100%		in	2011		60%		in	1975
Minimum Humidity		40%		50%		58%		-18%		93%		in	2020		28%		in	1989
Average Humidity		65%		73%		74%		-10%		95%		in	2020		47%		in	1975
Maximum Barometer		30.20		30.11		30.06		+00.14		30.57		in	1970		29.67		in	2003
Minimum Barometer		29.91		29.86		29.85		+00.06		30.40		in	1970		29.44		in	1990
Average Barometer		30.06		29.99		29.96		+00.10		30.49		in	1970		29.60		in	1969
Average Wind		9.5		5.7		6.3		+3.2		12.3		in	1968		2.0		in	1996
Direction		NE		NW		SSW				SE					ESE
High Wind Gust		28		21		22		+6		37		in	1984		10		in	2009
Direction		NE		S		SSW				S					SE
Maximum Water Temp		62.8		61.9		59.7		+3.1		67.8		in	2007		53.6		in	2020
Minimum Water Temp		57.7		57.4		55.8		+1.9		61.3		in	2012		50.9		in	2005
Average Water Temp		60.3		59.7		57.7		+2.5		63.8		in	2012		52.8		in	2020
Sunrise/ AM Twilight		5:15:05 AM						4:41:37 AM
Sunset / PM Twilight		8:10:17 PM						8:44:00 PM
Length Of Day		14:55:12
Special Conditions		None
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