Portsmouth Rhode Island Weather Almanac
Friday, April 4, 2025
Cloudy and Fog early then Partly Cloudy, Much Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		April 4, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		69		41		51		+18		69		in	2025		32		in	2016
Minimum Temperature		46		34		36		+10		48		in	1974		14		in	1954
Average Temperature		58		38		44		+14		58		in	2025		26		in	1954
Month Avg Max Temperature		56.0		46.3		50.8		+5.3		61.5		in	1986		38.0		in	1911
Month Avg Min Temperature		39.3		36.8		35.8		+3.5		42.8		in	2000		23.0		in	1954
Month Average Temperature		48.0		41.8		43.8		+4.3		51.8		in	1945		32.0		in	1911
High Heat Index		76								76		in	2024
Low Wind Chill		46		27		28		+18							3		in	1954
Heating Degree Days		7		27		21		-14		39		in	1954		7		in	2025
Month Heating DD		68		93		85		-17		126		in	1954		53		in	1945
Season Heating DD		4431		4325		4735		-304		5758		in	1918		3934		in	2012
Cooling Degree Days		0		0		0		+0		0		in	1900		0		in	All
Month Cooling DD
Year Cooling DD
Maximum Dew Point		57		40		39		+18		60		in	1974		11		in	1965
Minimum Dew Point		36		32		26		+10		48		in	1974		-1		in	1954
Average  Dew Point		47		36		32		+15		54		in	1974		5		in	1954
Month Avg Max Dew Point		49.0		41.8		38.8		+10.3		51.0		in	2010		14.5		in	1965
Month Avg Min Dew Point		27.3		32.5		25.3		+2.0		39.3		in	2010		5.3		in	1965
Month Average Dew Point		38.1		37.1		32.0		+6.1		45.1		in	2010		9.9		in	1965
Precipitation		.00		.75		.15		-.15		1.66		in	2017
One Hour Rain		.00		.27						.39		in	2007
Half Hour Rain		.00		.13						.25		in	2017
Hourly Rain Rate		.00		.49						1.54		in	2007
Month Precipitation		.49		2.24		.60		-.11		2.99		in	1973		.00		in	2010
Year Precipitation		9.75		21.08		12.06		-2.31		21.34		in	1998		6.44		in	2012
Snow		0.0		0.0		0.1		-0.1		4.2		in	1997		0.0		in
Snow Depth		0		0		0.0		-0.0		5		in	1915		0		in
Month Snow		0.0		0.0		0.4		-0.4		7.9		in	1915		0.0		in	2025
Season Snow		11.9		12.7		33.4		-21.5		78.0		in	2005		5.0		in	1998
		April 4, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		99%		87%		+12%		100%		in	2018		39%		in	1996
Minimum Humidity		33%		84%		49%		-16%		95%		in	1988		16%		in	1996
Average Humidity		66%		92%		68%		-2%		98%		in	1988		28%		in	1996
Maximum Barometer		30.32		29.53		30.02		+00.30		30.62		in	1991		29.29		in	1975
Minimum Barometer		29.94		29.16		29.70		+00.24		30.34		in	1962		28.83		in	1975
Average Barometer		30.13		29.35		29.86		+00.27		30.43		in	1962		29.06		in	1975
Average Wind		6.2		16.9		8.9		-2.7		19.3		in	1975		3.1		in	1966
Direction		WNW		ENE		WNW				NW					SE
High Wind Gust		22		43		28		-6		58		in	1963		14		in	2001
Direction		NW		ENE		WNW				WNW					SSE
Maximum Water Temp		45.9		43.3		43.7		+2.2		50.7		in	2010		39.9		in	2003
Minimum Water Temp		44.1		42.3		41.6		+2.5		47.3		in	2010		38.2		in	2003
Average Water Temp		45.0		42.8		42.7		+2.3		49.0		in	2010		39.1		in	2003
Sunrise/ AM Twilight		6:14:26 AM						5:53:09 AM
Sunset / PM Twilight		7:14:00 PM						7:42:41 PM
Length Of Day		12:52:08
Special Conditions		Dense Fog
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