Portsmouth Rhode Island Weather Almanac
Tuesday, April 29, 2025
Partly Cloudy, Windy and Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		April 29, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Temperature		65		74		60		+5		82		in	1903		43		in	1898
Minimum Temperature		51		50		43		+8		52		in	2017		30		in	1992
Average Temperature		58		62		52		+6		65		in	1903		40		in	1909
Month Avg Max Temperature		57.1		55.8		55.0		+2.1		61.0		in	1976		48.4		in	1907
Month Avg Min Temperature		41.3		40.1		39.2		+2.1		43.0		in	2010		33.8		in	1943
Month Average Temperature		49.4		48.2		47.4		+2.0		51.7		in	2010		41.9		in	1907
High Heat Index										81		in	1903
Low Wind Chill		48		48		38		+10							23		in	1992
Heating Degree Days		7		3		13		-6		25		in	1909		0		in	1903
Month Heating DD		451		488		510		-59		671		in	1907		386		in	2010
Season Heating DD		4814		4720		5160		-346		6242		in	1904		4271		in	2012
Cooling Degree Days		0		0		0		+0		0		in			0		in	All
Month Cooling DD						0				13		in	1976
Year Cooling DD						0				13		in	1976
Maximum Dew Point		49		63		48		+1		63		in	2024		27		in	1967
Minimum Dew Point		38		44		35		+3		48		in	2017		10		in	2012
Average  Dew Point		44		54		41		+3		56		in	2017		22		in	1977
Month Avg Max Dew Point		47.3		44.5		42.8		+4.6		47.6		in	2017		34.2		in	1965
Month Avg Min Dew Point		33.1		33.5		29.6		+3.6		37.3		in	2017		20.3		in	1982
Month Average Dew Point		40.2		39.0		36.1		+4.1		42.4		in	2017		28.7		in	1975
Precipitation		.00		.00		.14		-.14		2.19		in	1980
One Hour Rain		.00		.00						.94		in	1980
Half Hour Rain		.00		.00						.18		in	2008
Hourly Rain Rate		.00		.00						1.35		in	2008
Month Precipitation		3.54		4.06		4.13		-.59		11.94		in	1983		.47		in	1963
Year Precipitation		12.80		22.90		15.59		-2.79		31.21		in	1983		7.53		in	1985
Snow		0.0		0.0		0.0		+0.0		1.3		in	1997		0.0		in
Snow Depth		0		0		0.0		+0.0		0		in			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 29, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		78%		98%		87%		-9%		100%		in	1905		47%		in	2022
Minimum Humidity		45%		57%		49%		-4%		91%		in	1956		16%		in	2012
Average Humidity		62%		78%		68%		-6%		95%		in	1958		36%		in	2022
Maximum Barometer		30.22		30.07		30.08		+00.14		30.51		in	2001		29.71		in	1987
Minimum Barometer		29.86		29.93		29.84		+00.02		30.38		in	2001		29.25		in	1987
Average Barometer		30.04		30.00		29.96		+00.08		30.45		in	2001		29.48		in	1987
Average Wind		9.9		6.5		7.1		+2.8		13.4		in	1958		2.3		in	2007
Direction		SSW		SSE		SSW				E					SSE
High Wind Gust		33		16		24		+9		42		in	2010		12		in	2007
Direction		SSW		SE		SW				WNW					ESE
Maximum Water Temp		51.8		51.4		50.4		+1.4		55.6		in	2007		43.5		in	2020
Minimum Water Temp		49.6		48.4		47.4		+2.2		52.5		in	2012		#N/A		in	2020
Average Water Temp		50.7		49.9		48.9		+1.8		53.6		in	2012		42.0		in	2020
Sunrise/ AM Twilight		6:32:36 AM						5:13:14 AM
Sunset / PM Twilight		7:41:11 PM						8:11:40 PM
Length Of Day		13:57:32
Special Conditions		None
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