Portsmouth Rhode Island Weather Almanac
Saturday, April 15, 2023
Dense Fog early then Cloudy, Rain PM, Light Winds, Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		April 15, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		67		65		55		+12		75		in	1941		40		in	2018
Minimum Temperature		50		47		39		+11		50		in	2023		28		in	1957
Average Temperature		59		56		47		+12		61		in	1941		35		in	1943
Month Avg Max Temperature		60.9		57.5		52.7		+8.2		62.9		in	1945		44.9		in	2003
Month Avg Min Temperature		41.7		41.1		37.3		+4.3		43.4		in	2010		29.5		in	1982
Month Average Temperature		51.5		49.5		45.3		+6.3		53.2		in	2010		38.7		in	1907
High Heat Index												in
Low Wind Chill		49		44		33		+16							17		in	1957
Heating Degree Days		6		9		18		-12		30		in	1943		4		in	1941
Month HDD		207		232		296		-89		394		in	1907		177		in	2010
Season HDD		4274		4532		4946		-672		6014		in	1918		4106		in	2012
Cooling Degree Days		0		0		0		+0		0		in					in
Month CDD		5		0		0		+5		5		in	2023				in
Year CDD		5		0		0		+5		5		in	2023				in
Maximum Dew Point		60		46		43		+17		60		in	2023		16		in	1971
Minimum Dew Point		48		25		29		+19		48		in	2023		4		in	2005
Average  Dew Point		54		36		36		+18		54		in	2023		13		in	1971
Month Avg Max Dew Point		46.7		44.8		40.5		+6.2		47.7		in	2010		30.3		in	1965
Month Avg Min Dew Point		31.3		31.4		27.0		+4.3		35.7		in	2010		14.0		in	1982
Month Average Dew Point		39.0		38.1		33.7		+5.3		41.7		in	2010		22.4		in	1982
Precipitation		.19		.09		.14		+.05		3.29		in	1964
One Hour		.16		.09						.49		in	1964
Hourly Rate		1.35		.44						5.54		in	2014
Month Precipitation		.89		1.71		2.17		-1.28		6.74		in	1964		.03		in	1963
Year Precipitation		14.39		14.61		13.63		+.76		24.99		in	1983		6.69		in	2012
Snow		0.0		0.0		0.0		+0.0		T		in	2007				in
Snow Depth		0		0						3		in	1950				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 15, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		94%		85%		+14%		100%		in	2019		47%		in	1976
Minimum Humidity		80%		23%		46%		+34%		95%		in	1984		14%		in	1959
Average Humidity		90%		59%		66%		+24%		98%		in	1984		35%		in	1976
Maximum Barometer		30.01		30.10		30.08		-00.07		30.55		in	2005		29.62		in	2019
Minimum Barometer		29.90		29.93		29.82		+00.08		30.34		in	2016		29.18		in	1980
Average Barometer		29.96		30.02		29.95		+00.00		30.43		in	2005		29.43		in	1974
Average Wind		3.8		8.5		7.7		-3.9		15.3		in	1981		2.9		in	1994
Direction		SSE		NW		SSE				NW					SSE
High Wind Gust		13		33		26		-13		53		in	2007		13		in	2023
Direction		S		SW		S				ESE					S
Maximum Water Temp		51.3		50.0		47.1		+4.2		52.6		in	2012		43.2		in	2020
Minimum Water Temp		48.7		47.3		44.2		+4.5		49.8		in	2012		40.3		in	2018
Average Water Temp		50.0		48.7		45.7		+4.3		51.2		in	2012		41.8		in	2018
Sunrise/ AM Twilight		6:05:32 AM						5:34:45 AM
Sunset / PM Twilight		7:25:24 PM						7:55:34 PM
Length Of Day		13:19:52
Special Conditions		Dense Fog
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