Portsmouth Rhode Island Weather Almanac
Thursday, April 18, 2024
Cloudy, Rain and Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2024
		April 18, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Temperature		50		58		56		-6		80		in	1976		39		in	1921
Minimum Temperature		42		45		40		+2		53		in	2002		29		in	2003
Average Temperature		46		52		48		-2		67		in	1976		36		in	1921
Month Avg Max Temperature		54.3		60.8		53.2		+1.1		61.9		in	1945		45.7		in	2007
Month Avg Min Temperature		40.5		40.8		37.7		+2.8		42.7		in	2010		30.9		in	1943
Month Average Temperature		47.7		49.1		45.7		+1.9		52.4		in	1945		39.3		in	1907
High Heat Index										82		in	1976
Low Wind Chill		38		43		34		+5							19		in	1971
Heating Degree Days		19		13		17		+2		29		in	1921		0		in	1976
Month Heating DD		312		237		347		-35		463		in	1907		227		in	1945
Season Heating DD		4541		4323		5028		-487		6059		in	1918		4121		in	2012
Cooling Degree Days		0		0		0		+0		2		in	1976		0		in	Many
Month Cooling DD		0		5		0		+0		6		in	2002		0		in	Many
Year Cooling DD		0		5		0		+0		6		in	2002		0		in	Many
Maximum Dew Point		41		47		44		-3		59		in	2002		23		in	1990
Minimum Dew Point		36		34		31		+5		50		in	2002		11		in	1985
Average  Dew Point		39		41		37		+2		55		in	2002		20		in	1990
Month Avg Max Dew Point		43.8		47.9		40.9		+2.9		47.9		in	2023		31.1		in	1975
Month Avg Min Dew Point		34.7		33.4		27.6		+7.2		35.7		in	2010		16.6		in	1992
Month Average Dew Point		39.3		40.7		34.2		+5.1		41.1		in	2010		24.3		in	1992
Precipitation		.28		.00		.14		+.14		2.05		in	1967
One Hour Rain		.14		.00						.33		in	1967
Half Hour Rain		.11		.00						.11		in	2024
Hourly Rain Rate		.55		.00						.55		in	2024
Month Precipitation		3.62		1.01		2.59		+1.03		6.74		in	1983		.08		in	1966
Year Precipitation		22.46		14.51		14.18		+8.28		26.01		in	1983		6.69		in	2012
Snow		0.0		0.0		0.0		+0.0		T		in	2001
Snow Depth		0		0		0		+0		T		in	2005
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 18, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Humidity		95%		97%		86%		+9%		100%		in	2001		58%		in	2008
Minimum Humidity		65%		48%		45%		+20%		97%		in	1987		14%		in	2005
Average Humidity		80%		73%		66%		+14%		99%		in	1987		39%		in	1950
Maximum Barometer		30.20		29.88		30.06		+00.14		30.60		in	2014		29.49		in	1997
Minimum Barometer		30.09		29.64		29.81		+00.28		30.50		in	2003		28.99		in	1997
Average Barometer		30.15		29.76		29.94		+00.21		30.54		in	2003		29.24		in	1997
Average Wind		8.3		7.8		7.5		+0.8		20.2		in	1986		3.5		in	1978
Direction		E		WSW		WNW				NNE					SSE
High Wind Gust		28		36		25		+3		47		in	1986		13		in	1953
Direction		E		SSW		NW				NNE					SE
Maximum Water Temp		51.3		49.8		47.6		+3.7		55.4		in	2012		42.3		in	2020
Minimum Water Temp		46.8		48.7		44.8		+2.0		49.8		in	2012		39.9		in	2020
Average Water Temp		49.1		49.3		46.2		+2.9		52.6		in	2012		41.1		in	2020
Sunrise/ AM Twilight		5:59:43 AM						5:29:55 AM
Sunset / PM Twilight		7:29:30 PM						7:58:47 PM
Length Of Day		13:29:47
Special Conditions		None
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