Portsmouth Rhode Island Weather Almanac
Sunday, April 20, 2025
Partly Cloudy, Continued Windy and Warm
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		April 20, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		66		58		57		+9		83		in	1976		38		in	1904
Minimum Temperature		49		43		41		+8		55		in	1952		21		in	1897
Average Temperature		58		51		49		+9		67		in	1976		32		in	1897
Month Avg Max Temperature		53.9		54.6		53.5		+0.4		61.2		in	1976		45.7		in	1907
Month Avg Min Temperature		38.5		40.7		38.0		+0.5		42.8		in	2002		31.5		in	1943
Month Average Temperature		46.5		47.9		46.1		+0.4		52.0		in	1945		39.3		in	1907
High Heat Index										84		in	1976
Low Wind Chill		0		39		35		-35							12		in	1897
Heating Degree Days		7		14		16		-9		33		in	1897		0		in	1976
Month Heating DD		371		342		379		-8		514		in	1907		261		in	1945
Season Heating DD		4734		4574		5029		-295		6105		in	1918		4142		in	2012
Cooling Degree Days		0		0		0		+0		2		in	1976		0		in	All
Month Cooling DD						0				13		in	1976
Year Cooling DD						0				13		in	1976
Maximum Dew Point		56		53		44		+12		60		in	2019		22		in	1988
Minimum Dew Point		25		35		31		-6		53		in	2019		8		in	2007
Average  Dew Point		41		44		38		+3		57		in	2019		17		in	1988
Month Avg Max Dew Point		45.5		44.3		41.3		+4.2		47.1		in	2002		31.9		in	1965
Month Avg Min Dew Point		30.8		34.9		27.9		+2.9		35.8		in	2010		18.1		in	1982
Month Average Dew Point		38.1		39.6		34.6		+3.6		41.0		in	2010		26.3		in	1992
Precipitation		.00		.36		.14		-.14		1.34		in	1911
One Hour Rain		.00		.15						.36		in	1978
Half Hour Rain		.00		.11						.15		in	2009
Hourly Rain Rate		.00		.42						2.06		in	2019
Month Precipitation		2.44		3.98		2.87		-.43		9.19		in	1983		.08		in	1966
Year Precipitation		11.70		22.82		14.33		-2.63		28.46		in	1983		6.69		in	2012
Snow		0.0		0.0		0.0		+0.0		0.6		in	1997		0.0		in
Snow Depth		0		0		0.0		+0.0		T		in	1904		0		in
Month Snow		T		0.0		0.5		-0.5		9.6		in	1996		0.0		in	2024
Season Snow		11.9		12.7		33.5		-21.6		84.1		in	1996		5.0		in	1998
		April 20, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		84%		99%		87%		-3%		100%		in	2019		51%		in	1988
Minimum Humidity		26%		68%		47%		-21%		96%		in	2019		13%		in	2007
Average Humidity		55%		84%		67%		-12%		98%		in	2019		37%		in	1952
Maximum Barometer		30.31		30.07		30.11		+00.20		30.61		in	1990		29.48		in	1953
Minimum Barometer		29.89		29.81		29.85		+00.04		30.33		in	2014		29.00		in	1978
Average Barometer		30.10		29.94		29.98		+00.12		30.44		in	1966		29.33		in	1983
Average Wind		12.5		6.1		7.7		+4.8		16.0		in	1975		3.2		in	1965
Direction		NW		S		S				W					NNW
High Wind Gust		40		29		26		+14		46		in	1975		15		in	1976
Direction		WNW		NW		SSE				WSW					WNW
Maximum Water Temp		49.5		49.3		48.2		+1.3		54.0		in	2012		42.3		in	2020
Minimum Water Temp		46.2		46.8		45.3		+0.9		50.8		in	2012		40.5		in	2020
Average Water Temp		47.9		48.1		46.8		+1.1		52.4		in	2012		41.4		in	2020
Sunrise/ AM Twilight		6:47:52 AM						5:26:45 AM
Sunset / PM Twilight		7:31:24 PM						8:01:07 PM
Length Of Day		13:34:58
Special Conditions		None
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