Portsmouth Rhode Island Weather Almanac
Tuesday, April 18, 2023
Partly Cloudy early, Mostly Cloudy Day to Partly Cloudy Late, Continued Warm
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		April 18, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		58		53		56		+2		80		in	1976		39		in	1921
Minimum Temperature		45		33		40		+5		53		in	2002		29		in	2003
Average Temperature		52		43		48		+4		67		in	1976		36		in	1921
Month Avg Max Temperature		60.8		56.9		53.2		+7.7		61.9		in	1945		45.7		in	2007
Month Avg Min Temperature		42.8		40.8		37.7		+5.1		42.8		in	2023		30.9		in	1943
Month Average Temperature		52.1		49.1		45.7		+6.4		52.4		in	1945		39.3		in	1907
High Heat Index										82		in	1976
Low Wind Chill		43		31		33		+10							19		in	1971
Heating Degree Days		13		22		17		-4		29		in	1921		0		in	1976
Month HDD		237		287		347		-110		463		in	1907		227		in	1945
Season HDD		4304		4587		4997		-693		6059		in	1918		4121		in	2012
Cooling Degree Days		0		0		0		+0		2		in	1976				in
Month CDD		5		0		0		+5		6		in	2002				in
Year CDD		5		0		0		+5		6		in	2002				in
Maximum Dew Point		47		37		44		+3		59		in	2002		23		in	1990
Minimum Dew Point		34		27		31		+3		50		in	2002		11		in	1985
Average  Dew Point		41		32		37		+4		55		in	2002		20		in	1990
Month Avg Max Dew Point		47.9		44.6		40.9		+7.0		47.9		in	2023		31.1		in	1975
Month Avg Min Dew Point		33.4		31.2		27.6		+5.9		35.7		in	2010		16.6		in	1992
Month Average Dew Point		40.7		37.9		34.2		+6.5		41.1		in	2010		24.3		in	1992
Precipitation		.00		.00		.14		-.14		2.05		in	1967
One Hour		.00		.00						.33		in	1967
Hourly Rate		.00		.00						.38		in	2020
Month Precipitation		1.01		1.91		2.59		-1.58		6.74		in	1983		.08		in	1966
Year Precipitation		14.51		14.81		14.05		+.46		26.01		in	1983		6.69		in	2012
Snow		0.0		0.0		0.0		+0.0		T		in	2001				in
Snow Depth		0		0						T		in	2005				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 18, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		97%		82%		86%		+11%		100%		in	2001		58%		in	2008
Minimum Humidity		48%		40%		45%		+3%		97%		in	1987		14%		in	2005
Average Humidity		73%		61%		66%		+7%		99%		in	1987		39%		in	1950
Maximum Barometer		29.88		30.38		30.06		-00.18		30.60		in	2014		29.49		in	1997
Minimum Barometer		29.64		30.06		29.81		-00.17		30.50		in	2003		28.99		in	1997
Average Barometer		29.76		30.22		29.93		-00.17		30.54		in	2003		29.24		in	1997
Average Wind		7.8		7.6		7.5		+0.3		20.2		in	1986		3.5		in	1978
Direction		WSW		SSE		WNW				NNE					SSE
High Wind Gust		36		25		25		+11		47		in	1986		13		in	1953
Direction		SSW		E		NW				NNE					SE
Maximum Water Temp		49.8		49.1		47.4		+2.4		55.4		in	2012		42.3		in	2020
Minimum Water Temp		48.7		46.6		44.7		+4.0		49.8		in	2012		39.9		in	2020
Average Water Temp		49.3		47.9		46.1		+3.2		52.6		in	2012		41.1		in	2020
Sunrise/ AM Twilight		6:00:53 AM						5:29:55 AM
Sunset / PM Twilight		7:28:40 PM						7:59:04 PM
Length Of Day		13:27:47
Special Conditions		None
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