Portsmouth Rhode Island Weather Almanac
Thursday, October 17, 2024
Clear early then Partly Cloudy, Breezy, Colder
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2024
		October 17, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Temperature		55		63		61		-6		83		in	1938		50		in	2009
Minimum Temperature		38		47		47		-9		62		in	1928		32		in	1937
Average Temperature		47		55		54		-7		69		in	1938		42		in	1937
Month Avg Max Temperature		65.5		66.7		64.4		+1.2		71.9		in	1990		55.7		in	1896
Month Avg Min Temperature		47.9		50.9		49.7		-1.8		55.5		in	2021		39.8		in	1981
Month Average Temperature		57.0		59.1		57.2		-0.2		63.3		in	1990		49.9		in	1981
High Heat Index										85		in	1938
Low Wind Chill		33		43											30		in	1978
Heating Degree Days		18		10		11		+7		23		in	1937		0		in	2016
Month Heating DD		136		107		132		+4		256		in	1981		45		in	2021
Season Heating DD		174		171		212		-38		408		in	1956		70		in	2021
Cooling Degree Days		0		0		0		+0		4		in	1938		0		in	2024
Month Cooling DD		0		13		6		-6		48		in	1954		0		in	2024
Year Cooling DD		692		721		609		+83		868		in	2020		290		in	1902
Maximum Dew Point		45		53		53		-8		65		in	2016		32		in	1978
Minimum Dew Point		34		46		41		-7		57		in	2014		20		in	1970
Average  Dew Point		40		50		47		-7		61		in	2016		28		in	1978
Month Avg Max Dew Point		54.3		57.9		55.8		-1.5		62.1		in	2018		43.2		in	1981
Month Avg Min Dew Point		42.8		48.6		43.9		-1.1		53.5		in	2021		32.1		in	1981
Month Average Dew Point		48.9		53.6		49.8		-0.9		57.7		in	2021		37.6		in	1981
Precipitation		.00		.00		.14		-.14		1.93		in	1914
One Hour Rain		.00		.00						.65		in	2019
Half Hour Rain		.00		.00						.47		in	2019
Hourly Rain Rate		.00		.00						3.79		in	2019
Month Precipitation		.73		.46		2.38		-1.65		8.11		in	2005		.01		in	1963
Year Precipitation		44.51		42.56		35.59		+8.92		51.27		in	1998		18.73		in	1957
Snow												in
Snow Depth												in
Month Snow										0.7		in	1979
Season Snow										0.7		in	1979
		October 17, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Humidity		89%		97%		91%		-2%		100%		in	2001		68%		in	1982
Minimum Humidity		65%		66%		55%		+10%		98%		in	1993		28%		in	1953
Average Humidity		77%		82%		73%		+4%		99%		in	1993		54%		in	1954
Maximum Barometer		30.24		30.06		30.11		+00.13		30.68		in	1985		29.47		in	2019
Minimum Barometer		30.16		29.71		29.86		+00.30		30.27		in	1998		28.88		in	2019
Average Barometer		30.20		29.89		29.98		+00.22		30.46		in	1985		29.18		in	2019
Average Wind		7.9		4.7		6.9		+1.0		14.3		in	1977		1.6		in	1960
Direction		N		N		N				SW					N
High Wind Gust		24		14		23		+1		77		in	1908		11		in	1960
Direction		NNE		N		N				SE					N
Maximum Water Temp		60.1		61.5		61.6		-1.5		67.6		in	2021		56.9		in	2009
Minimum Water Temp		58.8		60.6		59.8		-1.0		66.0		in	2021		54.6		in	2010
Average Water Temp		59.5		61.1		60.7		-1.3		66.8		in	2021		55.8		in	2009
Sunrise/ AM Twilight		6:59:56 AM						6:32:02 AM
Sunset / PM Twilight		5:59:59 PM						6:28:59 PM
Length Of Day		11:00:03
Special Conditions		None
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