Portsmouth Rhode Island Weather Almanac
Monday, April 17, 2023
Cloudy, Light Afternoon Rain & Dense Fog, Light Wind and Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		April 17, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		56		49		56		+0		86		in	1976		41		in	2003
Minimum Temperature		48		39		40		+8		56		in	2002		24		in	1908
Average Temperature		52		44		48		+4		71		in	2002		34		in	1908
Month Avg Max Temperature		61.0		57.2		53.0		+8.0		61.8		in	1945		45.4		in	1907
Month Avg Min Temperature		42.7		41.2		37.6		+5.1		42.9		in	2010		30.8		in	1982
Month Average Temperature		52.1		49.4		45.6		+6.5		52.2		in	1945		39.1		in	1907
High Heat Index										88		in	1976
Low Wind Chill		45		35		33		+12							16		in	1908
Heating Degree Days		13		21		17		-4		31		in	1908		0		in	2012
Month HDD		224		265		330		-106		441		in	1907		217		in	1945
Season HDD		4291		4565		4980		-689		6038		in	1918		4111		in	2012
Cooling Degree Days		0		0		0		+0		6		in	2002				in
Month CDD		5		0		0		+5		6		in	2002				in
Year CDD		5		0		0		+5		6		in	2002				in
Maximum Dew Point		56		42		43		+13		63		in	1976		18		in	1980
Minimum Dew Point		47		26		30		+17		50		in	2002		3		in	1985
Average  Dew Point		52		34		37		+15		56		in	2002		14		in	1980
Month Avg Max Dew Point		48.0		45.0		40.8		+7.2		48.0		in	2023		30.1		in	1975
Month Avg Min Dew Point		33.4		31.4		27.4		+6.1		35.7		in	2010		15.5		in	1992
Month Average Dew Point		40.7		38.2		34.1		+6.6		41.3		in	2010		23.5		in	1992
Precipitation		.02		.19		.14		-.12		2.33		in	1954
One Hour		.01		.13						.53		in	1954
Hourly Rate		.00		.44						.79		in	2011
Month Precipitation		1.01		1.91		2.45		-1.44		6.74		in	1983		.04		in	1963
Year Precipitation		14.51		14.81		13.91		+.60		26.01		in	1983		6.69		in	2012
Snow		0.0		0.0		0.0		+0.0		T		in	1932				in
Snow Depth		0		0						1		in	1992				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 17, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		100%		94%		85%		+15%		100%		in	2023		47%		in	1985
Minimum Humidity		94%		43%		47%		+47%		98%		in	1987		13%		in	2012
Average Humidity		97%		69%		66%		+31%		99%		in	1987		32%		in	1985
Maximum Barometer		29.79		30.27		30.05		-00.26		30.74		in	2014		29.50		in	2007
Minimum Barometer		29.53		29.85		29.79		-00.26		30.58		in	2014		28.92		in	1929
Average Barometer		29.66		30.06		29.92		-00.26		30.66		in	2014		29.40		in	2007
Average Wind		5.4		8.9		8.2		-2.8		15.1		in	1986		2.7		in	2005
Direction		SE		NW		S				NE					S
High Wind Gust		15		30		26		-11		52		in	1954		12		in	2001
Direction		WSW		NNW		SSW				SSW					S
Maximum Water Temp		50.5		48.0		47.0		+3.5		54.0		in	2012		41.3		in	2003
Minimum Water Temp		49.5		46.4		44.3		+5.2		49.6		in	2012		39.8		in	2003
Average Water Temp		50.0		47.2		45.7		+4.3		51.8		in	2012		40.6		in	2003
Sunrise/ AM Twilight		6:02:25 AM						5:31:31 AM
Sunset / PM Twilight		7:27:35 PM						7:57:54 PM
Length Of Day		13:25:10
Special Conditions		Dense Fog
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