Portsmouth Rhode Island Weather Almanac
Tuesday, April 30, 2024
Cloudy, Light Rain early, Much Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2024
		April 30, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Temperature		59		59		60		-1		83		in	1942		42		in	1909
Minimum Temperature		48		50		44		+4		55		in	1974		29		in	1992
Average Temperature		54		55		52		+2		64		in	1951		37		in	1975
Month Avg Max Temperature		55.9		59.1		55.2		+0.7		61.1		in	1976		48.8		in	1907
Month Avg Min Temperature		40.4		43.2		39.4		+1.0		43.2		in	2023		34.1		in	1943
Month Average Temperature		48.4		51.4		47.6		+0.8		51.9		in	2010		42.3		in	1907
High Heat Index										82		in	1942
Low Wind Chill		46		47		38		+8							21		in	1992
Heating Degree Days		11		10		13		-2		27		in	1909		0		in	1974
Month Heating DD		499		412		523		-24		682		in	1907		392		in	2010
Season Heating DD		4728		4479		5204		-476		6252		in	1904		4289		in	2012
Cooling Degree Days		0		0		0		+0		1		in	1942		0		in	Many
Month Cooling DD		0		5		0		+0		13		in	1976		0		in	Many
Year Cooling DD		0		5		0		+0		13		in	1976		0		in	Many
Maximum Dew Point		50		58		48		+2		58		in	2023		28		in	1967
Minimum Dew Point		43		50		35		+8		50		in	2023		9		in	1978
Average  Dew Point		47		54		42		+5		54		in	2023		21		in	1978
Month Avg Max Dew Point		44.7		47.8		42.9		+1.7		47.8		in	2023		34.3		in	1965
Month Avg Min Dew Point		33.8		35.9		29.7		+4.1		37.3		in	2017		20.5		in	1982
Month Average Dew Point		39.3		41.8		36.3		+2.9		42.4		in	2017		28.9		in	1975
Precipitation		.02		1.70		.14		-.12		2.00		in	1902
One Hour Rain		.02		.38						.38		in	2023
Half Hour Rain		.02		.26						.26		in	2023
Hourly Rain Rate		.32		3.37						3.37		in	2023
Month Precipitation		4.08		3.73		4.27		-.19		11.94		in	1983		.78		in	1942
Year Precipitation		22.92		17.23		15.86		+7.06		31.21		in	1983		7.53		in	1985
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0		0		+0		1		in	1909
Month Snow		0.0		0.0		0.5		-0.5		9.6		in	1996		0.0		in	2024
Season Snow		12.7		9.1		33.8		-21.1		84.1		in	1996		5.0		in	1998
		April 30, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Humidity		89%		99%		87%		+2%		100%		in	2005		52%		in	1978
Minimum Humidity		61%		97%		47%		+14%		97%		in	2023		17%		in	1957
Average Humidity		75%		98%		67%		+8%		99%		in	1990		36%		in	1978
Maximum Barometer		30.07		29.87		30.10		-00.03		30.71		in	1934		29.48		in	2021
Minimum Barometer		29.91		29.16		29.85		+00.06		30.35		in	2006		29.16		in	2023
Average Barometer		29.99		29.52		29.98		+00.01		30.39		in	2006		29.37		in	2021
Average Wind		6.8		9.6		7.2		-0.4		16.3		in	1987		3.4		in	2013
Direction		ESE		ESE		S				WNW					S
High Wind Gust		23		40		24		-1		45		in	1963		13		in	2019
Direction		ESE		ESE		S				SSE					NW
Maximum Water Temp		50.9		51.8		50.5		+0.4		55.6		in	2012		41.9		in	2020
Minimum Water Temp		49.3		50.4		47.6		+1.7		52.3		in	2007		40.8		in	2020
Average Water Temp		50.1		51.1		49.1		+1.0		53.8		in	2012		41.4		in	2020
Sunrise/ AM Twilight		5:42:34 AM						5:11:49 AM
Sunset / PM Twilight		7:42:31 PM						8:12:51 PM
Length Of Day		13:58:08
Special Conditions		None
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