Portsmouth Rhode Island Weather Almanac
Tuesday, October 17, 2023
Partly Cloudy to Mostly Cloudy PM, Light Winds and Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		October 17, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		63		64		61		+2		83		in	1938		50		in	2009
Minimum Temperature		47		48		47		+0		62		in	1928		32		in	1937
Average Temperature		55		56		54		+1		69		in	1938		42		in	1937
Month Avg Max Temperature		67.3		64.1		64.4		+2.9		71.9		in	1990		55.7		in	1896
Month Avg Min Temperature		51.1		50.5		49.7		+1.4		55.5		in	2021		39.8		in	1981
Month Average Temperature		59.5		57.5		57.2		+2.2		63.3		in	1990		49.9		in	1981
High Heat Index										85		in	1938
Low Wind Chill		43													30		in	1978
Heating Degree Days		10		9		11		-1		23		in	1937		0		in	Many
Month Heating DD		107		128		132		-25		256		in	1981		45		in	2021
Season Heating DD		168		128		132		+36		408		in	1956		70		in	2021
Cooling Degree Days		0		0		0		-0		4		in	1938		0		in	Many
Month Cooling DD		13		1		6		+7		48		in	1954		0		in	2015
Year Cooling DD		721		771		609		+112		868		in	2020		290		in	1902
Maximum Dew Point		53		61		53		+0		65		in	2016		32		in	1978
Minimum Dew Point		46		46		41		+5		57		in	2014		20		in	1970
Average  Dew Point		50		54		47		+3		61		in	2016		28		in	1978
Month Avg Max Dew Point		57.9		56.4		55.8		+2.1		62.1		in	2018		43.2		in	1981
Month Avg Min Dew Point		48.6		47.1		43.9		+4.8		53.5		in	2021		32.1		in	1981
Month Average Dew Point		53.6		52.0		49.8		+3.8		57.7		in	2021		37.6		in	1981
Precipitation		.00		.40		.14		-.14		1.93		in	1914
One Hour Rain		.00		.21						.65		in	2019
Half Hour Rain		.00		.10						.21		in	2020
Hourly Rain Rate		.00		3.24						3.79		in	2019
Month Precipitation		.46		4.04		2.38		-1.92		8.11		in	2005		.01		in	1963
Year Precipitation		42.56		33.85		35.46		+7.10		51.27		in	1998		18.73		in	1957
Snow
Snow Depth
Month Snow						0.0				0.7		in	1979				in
Season Snow						0.0				0.7		in	1979				in
		October 17, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		97%		98%		91%		+6%		100%		in	2001		68%		in	1982
Minimum Humidity		66%		82%		55%		+11%		98%		in	1993		28%		in	1953
Average Humidity		82%		90%		73%		+9%		99%		in	1993		54%		in	1954
Maximum Barometer		30.06		29.84		30.11		-00.05		30.68		in	1985		29.47		in	2019
Minimum Barometer		29.71		29.60		29.85		-00.14		30.27		in	1998		28.88		in	2019
Average Barometer		29.89		29.72		29.98		-00.09		30.46		in	1985		29.18		in	2019
Average Wind		4.7		5.2		6.9		-2.2		14.3		in	1977		1.6		in	1960
Direction		N		SSE		N				SW					N
High Wind Gust		14		26		23		-9		77		in	1908		11		in	1960
Direction		N		S		N				SE					N
Maximum Water Temp		61.5		63.3		61.6		-0.1		67.6		in	2021		56.9		in	2009
Minimum Water Temp		60.6		62.8		59.9		+0.7		66.0		in	2021		54.6		in	2010
Average Water Temp		61.1		63.1		60.8		+0.3		66.8		in	2021		55.8		in	2009
Sunrise/ AM Twilight		6:59:05 AM						6:32:02 AM
Sunset / PM Twilight		6:01:08 PM						6:28:59 PM
Length Of Day		11:01:25
Special Conditions		None
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