Portsmouth Rhode Island Weather Almanac
Saturday, May 20, 2023
Cloudy, Record Breaking Heavy Rain, Windy and Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		May 20, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		62		68		66		-4		85		in	1996		51		in	1948
Minimum Temperature		55		49		50		+5		60		in	1903		38		in	1992
Average Temperature		59		59		58		+1		72		in	1903		47		in	1948
Month Avg Max Temperature		65.4		63.9		63.2		+2.2		69.0		in	1918		56.0		in	1966
Month Avg Min Temperature		47.3		48.5		46.9		+0.4		49.9		in	1930		41.3		in	1967
Month Average Temperature		56.5		56.5		55.1		+1.5		59.3		in	1930		49.1		in	1966
High Heat Index										88		in	1996
Low Wind Chill															37		in	1992
Heating Degree Days		6		6		7		-1		18		in	1948		0		in	2019
Month Heating DD		174		174		199		-25		318		in	1966		125		in	1993
Season Heating DD		4653		4956		5372		-719		6456		in	1905		4460		in	2012
Cooling Degree Days		0		0		0		-0		7		in	1903				in
Month Cooling DD		4		3		0		+4		27		in	2001		0		in	2020
Year Cooling DD		9		3		0		+9		27		in	2001		0		in	2020
Maximum Dew Point		61		58		55		+6		70		in	1996		38		in	2002
Minimum Dew Point		53		48		44		+9		57		in	2019		29		in	2002
Average  Dew Point		57		53		49		+8		61		in	2019		34		in	2002
Month Avg Max Dew Point		51.7		51.8		51.4		+0.4		56.9		in	2004		42.5		in	1967
Month Avg Min Dew Point		38.0		40.7		39.9		-1.9		46.7		in	1953		30.3		in	1967
Month Average Dew Point		45.2		46.6		45.6		-0.5		50.7		in	1953		36.4		in	1967
Precipitation		1.71		.01		.10		+1.61		1.71		in	2023
One Hour Rain		.36		.01						.43		in	1984
Hourly Rain Rate		2.01		.00						2.74		in	2018
Month Precipitation		2.38		1.76		2.21		+.17		6.87		in	2006		.09		in	2001
Year Precipitation		19.61		18.16		17.94		+1.67		34.03		in	1983		10.81		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 20, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		99%		93%		+6%		100%		in	2019		68%		in	1981
Minimum Humidity		86%		67%		56%		+30%		90%		in	1972		24%		in	1981
Average Humidity		93%		83%		75%		+18%		95%		in	1969		46%		in	1981
Maximum Barometer		30.28		30.06		30.07		+00.21		30.58		in	1992		29.65		in	2008
Minimum Barometer		29.84		29.83		29.85		-00.01		30.39		in	2020		29.32		in	1968
Average Barometer		30.06		29.95		29.96		+00.10		30.45		in	2021		29.51		in	1968
Average Wind		11.2		4.8		6.6		+4.6		14.3		in	1985		1.2		in	1996
Direction		SSE		SSE		S				SSW					SSW
High Wind Gust		31		17		22		+9		51		in	1963		12		in	1951
Direction		SSE		S		SSW				SSW					SE
Maximum Water Temp		56.8		56.8		56.5		+0.3		61.9		in	2012		49.5		in	2020
Minimum Water Temp		55.4		53.4		53.1		+2.3		57.7		in	2012		46.2		in	2020
Average Water Temp		56.1		55.1		54.8		+1.3		59.8		in	2012		47.9		in	2020
Sunrise/ AM Twilight		5:21:25 AM						4:48:22 AM
Sunset / PM Twilight		8:02:19 PM						8:35:21 PM
Length Of Day		14:40:54
Special Conditions		Dense Fog
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