Portsmouth Rhode Island Weather Almanac
Sunday, April 30, 2023
Cloudy, (Dense Fog Day), Heavy Rain, Windy and Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		April 30, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		59		59		60		-1		83		in	1942		42		in	1909
Minimum Temperature		50		40		44		+6		55		in	1974		29		in	1992
Average Temperature		55		50		52		+3		64		in	1951		37		in	1975
Month Avg Max Temperature		59.1		56.9		55.2		+3.9		61.1		in	1976		48.8		in	1907
Month Avg Min Temperature		43.2		40.5		39.4		+3.8		43.2		in	2023		34.1		in	1943
Month Average Temperature		51.4		48.9		47.6		+3.9		51.9		in	2010		42.3		in	1907
High Heat Index										82		in	1942
Low Wind Chill		47		37		38		+9							21		in	1992
Heating Degree Days		10		15		13		-3		27		in	1909		0		in	1974
Month HDD		412		482		523		-111		682		in	1907		392		in	2010
Season HDD		4479		4782		5173		-694		6252		in	1904		4289		in	2012
Cooling Degree Days		0		0		0		+0		1		in	1942				in
Month CDD		5		0		0		+5		13		in	1976				in
Year CDD		5		0		0		+5		13		in	1976				in
Maximum Dew Point		58		40		48		+10		58		in	2023		28		in	1967
Minimum Dew Point		50		24		35		+15		50		in	2023		9		in	1978
Average  Dew Point		54		32		42		+12		54		in	2023		21		in	1978
Month Avg Max Dew Point		47.8		43.4		42.9		+4.9		47.8		in	2023		34.3		in	1965
Month Avg Min Dew Point		35.9		29.2		29.7		+6.1		37.3		in	2017		20.5		in	1982
Month Average Dew Point		41.8		36.3		36.3		+5.5		42.4		in	2017		28.9		in	1975
Precipitation		1.70		.00		.14		+1.56		2.00		in	1902
One Hour		.38		.00						.38		in	2023
Hourly Rate		3.37		.00						3.37		in	2023
Month Precipitation		3.73		3.50		4.27		-.54		11.94		in	1983		.78		in	1942
Year Precipitation		17.23		16.40		15.73		+1.50		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						1		in	1909				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 30, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		86%		87%		+12%		100%		in	2005		52%		in	1978
Minimum Humidity		97%		34%		47%		+50%		97%		in	2023		17%		in	1957
Average Humidity		98%		60%		67%		+31%		99%		in	1990		36%		in	1978
Maximum Barometer		29.87		30.11		30.10		-00.23		30.71		in	1934		29.48		in	2021
Minimum Barometer		29.16		30.04		29.85		-00.69		30.35		in	2006		29.16		in	2023
Average Barometer		29.52		30.08		29.98		-00.46		30.39		in	2006		29.37		in	2021
Average Wind		9.6		7.0		7.2		+2.4		16.3		in	1987		3.4		in	2013
Direction		ESE		NW		S				WNW					S
High Wind Gust		40		21		24		+16		45		in	1963		13		in	2019
Direction		ESE		N		S				SSE					NW
Maximum Water Temp		51.8		50.0		50.5		+1.3		55.6		in	2012		41.9		in	2020
Minimum Water Temp		50.4		47.8		47.6		+2.8		52.3		in	2007		#N/A		in	2020
Average Water Temp		51.1		48.9		49.0		+2.1		53.8		in	2012		41.4		in	2020
Sunrise/ AM Twilight		5:43:34 AM						5:11:49 AM
Sunset / PM Twilight		7:41:42 PM						8:13:08 PM
Length Of Day		13:58:08
Special Conditions		Dense Fog
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