Portsmouth Rhode Island Weather Almanac
Friday, April 28, 2023
Mostly Cloudy/Dense Fog early, Partly Cloudy Day to Mostly Cloudy PM, Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		April 28, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		61		51		59		+2		82		in	1990		39		in	1898
Minimum Temperature		42		38		43		-1		55		in	1935		32		in	1992
Average Temperature		52		45		51		+1		67		in	1935		38		in	1916
Month Avg Max Temperature		59.2		56.8		54.8		+4.4		61.0		in	1976		48.0		in	1907
Month Avg Min Temperature		42.9		40.6		39.1		+3.8		43.0		in	2010		33.6		in	1943
Month Average Temperature		51.3		48.9		47.3		+4.0		51.6		in	2010		41.5		in	1907
High Heat Index										82		in	1990
Low Wind Chill		40		30		36		+4							22		in	1993
Heating Degree Days		13		20		14		-1		27		in	1916		0		in	1990
Month HDD		389		451		497		-108		657		in	1907		374		in	2010
Season HDD		4456		4751		5147		-691		6229		in	1904		4256		in	2012
Cooling Degree Days		0		0		0		+0		2		in	1935				in
Month CDD		5		0		0		+5		13		in	1976				in
Year CDD		5		0		0		+5		13		in	1976				in
Maximum Dew Point		49		30		47		+2		60		in	2017		26		in	1967
Minimum Dew Point		42		16		34		+8		53		in	2011		5		in	1993
Average  Dew Point		46		23		41		+5		57		in	2011		19		in	1993
Month Avg Max Dew Point		47.4		44.1		42.6		+4.8		47.4		in	2023		34.0		in	1965
Month Avg Min Dew Point		35.2		29.8		29.4		+5.9		36.9		in	2017		20.4		in	1982
Month Average Dew Point		41.3		37.0		36.0		+5.3		42.0		in	2017		28.6		in	1975
Precipitation		.00		.00		.14		-.14		2.93		in	1904
One Hour		.00		.00						.53		in	1988
Hourly Rate		.00		.00						.84		in	2008
Month Precipitation		1.55		3.50		3.99		-2.44		11.94		in	1983		.47		in	1963
Year Precipitation		15.05		16.40		15.45		-.40		31.21		in	1983		7.53		in	1985
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		0.5		-0.5		9.6		in	1996		0.0		in	2023
Season Snow		9.1		34.2		33.5		-24.4		84.1		in	1996		5.0		in	1998
		April 28, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		65%		89%		+10%		100%		in	2018		54%		in	1967
Minimum Humidity		56%		29%		50%		+6%		96%		in	2011		18%		in	2001
Average Humidity		78%		47%		70%		+8%		98%		in	2011		41%		in	1972
Maximum Barometer		30.26		29.96		30.07		+00.19		30.68		in	1966		29.60		in	2010
Minimum Barometer		30.14		29.82		29.82		+00.32		30.33		in	1966		29.20		in	1973
Average Barometer		30.20		29.89		29.94		+00.26		30.51		in	1966		29.40		in	1973
Average Wind		6.0		13.9		7.9		-1.9		19.9		in	1967		1.1		in	1965
Direction		SSE		NW		N				NNE					S
High Wind Gust		21		34		26		-5		51		in	1967		13		in	2007
Direction		S		NNW		N				NNE					SSE
Maximum Water Temp		53.1		50.0		49.8		+3.3		55.6		in	2007		41.4		in	2020
Minimum Water Temp		51.6		48.4		47.1		+4.5		51.6		in	2023		39.4		in	2020
Average Water Temp		52.4		49.2		48.5		+3.9		52.6		in	2012		40.4		in	2020
Sunrise/ AM Twilight		5:46:17 AM						5:14:40 AM
Sunset / PM Twilight		7:39:32 PM						8:10:47 PM
Length Of Day		13:53:15
Special Conditions		Dense Fog
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