Portsmouth Rhode Island Weather Almanac
Sunday, February 18, 2024
Clear early, Partly Cloudy Day to Clear PM, Windy, Continued Cold
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2024
		February 18, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Temperature		35		38		40		-5		56		in	2022		15		in	1958
Minimum Temperature		20		23		25		-5		40		in	2008		-3		in	1979
Average Temperature		28		31		33		-5		48		in	2008		7		in	1958
Month Avg Max Temperature		40.3		45.7		38.6		+1.7		45.7		in	2023		22.1		in	1979
Month Avg Min Temperature		28.6		26.8		24.3		+4.3		30.7		in	2020		7.4		in	1979
Month Average Temperature		34.7		36.6		31.9		+2.7		37.5		in	2020		14.9		in	1979
High Heat Index										#N/A		in	#N/A
Low Wind Chill		10		10		12		-2							-22		in	1958
Heating Degree Days		37		34		32		+5		58		in	1958		17		in	2008
Month Heating DD		546		512		595		-49		901		in	1979		495		in	2020
Season Heating DD		3213		3006		3514		-301		4477		in	1918		2895		in	2016
Cooling Degree Days		0		0		0		+0				in			0		in	Many
Month Cooling DD		0		0		0		+0		3		in	2022		0		in	Many
Year Cooling DD		726		784		609		+117		871		in	2020		290		in	1902
Maximum Dew Point		22		26		31		-9		56		in	2022		-1		in	1979
Minimum Dew Point		10		15		14		-4		40		in	2008		-21		in	1979
Average  Dew Point		16		21		23		-7		47		in	2008		-11		in	1979
Month Avg Max Dew Point		32.1		35.8		29.4		+2.6		38.7		in	2018		2.7		in	1979
Month Avg Min Dew Point		20.9		16.0		12.9		+8.0		22.6		in	2020		-9.0		in	1979
Month Average Dew Point		26.7		26.1		23.0		+3.7		29.6		in	2020		-3.1		in	1979
Precipitation		.00		.00		.13		-.13		2.94		in	1998
One Hour Rain		.00		.00						1.02		in	1998
Half Hour Rain		.00		.00						.16		in	2022
Hourly Rain Rate		.00		.00						2.80		in	2022
Month Precipitation		.82		.41		2.13		-1.31		5.93		in	1988		.07		in	1912
Year Precipitation		7.57		7.60		5.80		+1.77		12.38		in	1979		2.33		in	1980
Snow		0.0		0.0		0.4		-0.4		12.0		in	1893
Snow Depth		3		0		2		+1		24		in	2015
Month Snow		6.1		T		6.4		-0.3		26.4		in	2003		0.0		in	2020
Season Snow		12.7		2.3		23.5		-10.8		61.1		in	1996		2.3		in	2023
		February 18, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Humidity		67%		74%		84%		-17%		100%		in	2018		45%		in	1987
Minimum Humidity		51%		44%		51%		+0%		95%		in	1998		23%		in	2006
Average Humidity		59%		59%		67%		-8%		98%		in	1998		36%		in	1987
Maximum Barometer		29.91		30.35		30.17		-00.26		30.89		in	1979		29.45		in	1958
Minimum Barometer		29.72		29.87		29.81		-00.09		30.57		in	1979		29.14		in	1952
Average Barometer		29.82		30.11		29.99		-00.17		30.73		in	1979		29.40		in	1958
Average Wind		10.7		10.0		8.7		+2.0		19.3		in	1952		2.0		in	1995
Direction		W		NW		NW				NNE					SSE
High Wind Gust		38		34		27		+11		52		in	1900		10		in	1995
Direction		SW		NNW		NW				N					SW
Maximum Water Temp		39.6		43.2		38.2		+1.4		43.8		in	2012		32.7		in	2015
Minimum Water Temp		37.9		41.0		36.3		+1.6		41.9		in	2012		31.3		in	2007
Average Water Temp		38.8		42.1		37.3		+1.5		42.9		in	2012		32.4		in	2015
Sunrise/ AM Twilight		6:36:43 AM						6:06:18 AM
Sunset / PM Twilight		5:21:48 PM						5:51:46 PM
Length Of Day		10:45:05
Special Conditions		None
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