Portsmouth Rhode Island Weather Almanac
Tuesday, May 30, 2023
Clear, Haze/Smoke From Canadian Wild Fires, Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		May 30, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		65		80		70		-5		90		in	1931		49		in	2021
Minimum Temperature		46		55		53		-7		66		in	1929		39		in	1970
Average Temperature		56		68		61		-5		76		in	1942		48		in	2021
Month Avg Max Temperature		66.4		66.7		64.8		+1.6		71.4		in	1991		57.4		in	1917
Month Avg Min Temperature		47.6		50.4		48.4		-0.7		52.6		in	2012		41.9		in	1967
Month Average Temperature		57.3		58.8		56.6		+0.6		60.5		in	1991		50.5		in	1967
High Heat Index				81						94		in	1942
Low Wind Chill		44													36		in	1970
Heating Degree Days		9		0		4		+5		17		in	2021		0		in	2022
Month Heating DD		236		203		251		-15		435		in	1967		168		in	1993
Season Heating DD		4715		4985		5424		-709		6523		in	1905		4475		in	2012
Cooling Degree Days		0		3		1		-1		11		in	1942				in
Month Cooling DD		4		17		10		-6		45		in	1991		0		in	2008
Year Cooling DD		9		17		10		-1		45		in	1991		0		in	2008
Maximum Dew Point		52		67		58		-6		71		in	2011		40		in	1967
Minimum Dew Point		42		53		48		-6		61		in	2012		27		in	1961
Average  Dew Point		47		60		53		-6		66		in	2011		35		in	1967
Month Avg Max Dew Point		52.3		55.6		53.1		-0.8		57.9		in	2012		42.1		in	1967
Month Avg Min Dew Point		39.5		44.3		41.9		-2.4		48.9		in	2012		31.2		in	1967
Month Average Dew Point		46.2		50.2		47.5		-1.3		53.5		in	2012		36.7		in	1967
Precipitation		.00		.00		.10		-.10		1.12		in	2016
One Hour Rain		.00		.00						.44		in	1991
Hourly Rain Rate		.00		.00						4.57		in	2016
Month Precipitation		3.44		2.80		3.21		+.23		9.19		in	1948		.35		in	2015
Year Precipitation		20.67		19.20		18.94		+1.73		35.73		in	1983		11.62		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 30, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		96%		96%		93%		+3%		100%		in	2017		64%		in	1993
Minimum Humidity		50%		62%		57%		-7%		96%		in	2016		24%		in	1993
Average Humidity		73%		79%		75%		-2%		98%		in	2016		44%		in	1993
Maximum Barometer		30.25		30.12		30.04		+00.21		30.55		in	1970		29.64		in	2003
Minimum Barometer		30.20		29.98		29.84		+00.36		30.34		in	1970		29.30		in	1990
Average Barometer		30.23		30.05		29.94		+00.28		30.45		in	1970		29.56		in	1990
Average Wind		5.6		5.8		5.7		-0.1		13.0		in	1984		2.2		in	2012
Direction		SSE		SW		SSE				SSE					WSW
High Wind Gust		18		23		20		-2		39		in	1909		11		in	2012
Direction		S		SSW		SSE				NW					WSW
Maximum Water Temp		61.3		63.0		59.9		+1.4		68.4		in	2007		55.2		in	2020
Minimum Water Temp		59.0		61.1		56.0		+3.0		61.5		in	2012		51.3		in	2005
Average Water Temp		60.2		62.1		58.0		+2.2		64.9		in	2007		53.6		in	2020
Sunrise/ AM Twilight		5:14:32 AM						4:41:03 AM
Sunset / PM Twilight		8:11:05 PM						8:44:52 PM
Length Of Day		14:56:33
Special Conditions		Haze
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