Portsmouth Rhode Island Weather Almanac
Saturday, February 17, 2024
Cloudy, Light Snow and Fog Daytime then clearing late, Colder
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2024
		February 17, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Temperature		33		54		40		-7		60		in	1976		11		in	1922
Minimum Temperature		23		27		25		-2		45		in	2022		-9		in	1896
Average Temperature		28		41		33		-5		50		in	2022		4		in	1922
Month Avg Max Temperature		40.6		46.2		38.5		+2.1		46.2		in	2023		22.4		in	1979
Month Avg Min Temperature		29.1		27.0		24.3		+4.8		30.8		in	2020		8.0		in	1979
Month Average Temperature		35.1		36.9		31.9		+3.2		37.4		in	2020		15.4		in	1979
High Heat Index										#N/A		in	#N/A
Low Wind Chill		13		15		10		+3							-25		in	1896
Heating Degree Days		37		24		32		+5		61		in	1922		15		in	2022
Month Heating DD		509		478		563		-54		844		in	1979		469		in	2020
Season Heating DD		3176		2972		3482		-306		4436		in	1918		2861		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		29		53		31		-2		53		in	2023		-13		in	1979
Minimum Dew Point		9		20		14		-5		42		in	2022		-19		in	1979
Average  Dew Point		19		37		23		-4		47		in	2022		-16		in	1979
Month Avg Max Dew Point		32.6		36.4		29.4		+3.3		39.0		in	2018		2.9		in	1979
Month Avg Min Dew Point		21.5		16.1		12.8		+8.7		22.6		in	2020		-8.3		in	1979
Month Average Dew Point		27.4		26.4		23.0		+4.4		29.4		in	2020		-2.7		in	1979
Precipitation		.09		.21		.12		-.03		1.85		in	1936
One Hour Rain		.00		.06						.35		in	1983
Half Hour Rain		.00		.04						.07		in	2022
Hourly Rain Rate		.00		.28						.85		in	2022
Month Precipitation		.82		.41		2.00		-1.18		5.93		in	1988		.07		in	1912
Year Precipitation		7.57		7.60		5.67		+1.90		12.38		in	1979		2.33		in	1980
Snow		0.5		T		0.4		+0.1		16.4		in	2003
Snow Depth		3		0		2		+1		22		in	2015
Month Snow		6.1		T		6.0		+0.1		26.3		in	1978		0.0		in	2020
Season Snow		12.7		2.3		23.1		-10.4		61.1		in	1996		2.3		in	2023
		February 17, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Humidity		94%		99%		84%		+10%		100%		in	2018		42%		in	1979
Minimum Humidity		49%		71%		49%		-0%		90%		in	1954		20%		in	2000
Average Humidity		72%		85%		67%		+5%		94%		in	1954		35%		in	1989
Maximum Barometer		29.88		29.87		30.17		-00.29		30.84		in	1989		29.42		in	1958
Minimum Barometer		29.65		29.46		29.79		-00.14		30.50		in	1989		28.71		in	1902
Average Barometer		29.77		29.67		29.98		-00.21		30.67		in	1989		29.22		in	1958
Average Wind		6.5		11.5		8.8		-2.3		20.5		in	2013		2.6		in	1978
Direction		WNW		SW		WNW				NW					S
High Wind Gust		31		37		28		+3		53		in	1902		11		in	1978
Direction		NW		NW		WNW				NE					SE
Maximum Water Temp		40.3		44.4		38.6		+1.7		44.4		in	2023		32.4		in	2015
Minimum Water Temp		39.4		43.2		36.8		+2.6		43.2		in	2023		32.0		in	2015
Average Water Temp		39.9		43.8		37.7		+2.1		43.8		in	2023		32.2		in	2015
Sunrise/ AM Twilight		6:38:06 AM						6:07:40 AM
Sunset / PM Twilight		5:20:34 PM						5:50:35 PM
Length Of Day		10:42:28
Special Conditions		Fog
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