Portsmouth Rhode Island Weather Almanac
Wednesday, October 18, 2023
Cloudy, Light Afternoon Rain, Very Light Winds, Continued Cool
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		October 18, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		60		65		61		-1		77		in	1908		46		in	1939
Minimum Temperature		50		47		47		+3		63		in	1928		29		in	1978
Average Temperature		55		56		54		+1		68		in	2016		39		in	1939
Month Avg Max Temperature		66.9		64.1		64.2		+2.7		71.9		in	1990		55.6		in	1896
Month Avg Min Temperature		51.1		50.3		49.6		+1.5		55.1		in	2021		39.6		in	1981
Month Average Temperature		59.2		57.4		57.1		+2.2		63.6		in	1990		49.8		in	1981
High Heat Index										78		in	1908
Low Wind Chill				46											26		in	2009
Heating Degree Days		10		9		11		-1		26		in	1939		0		in	Many
Month Heating DD		117		137		143		-26		273		in	1981		54		in	1990
Season Heating DD		178		137		143		+35		415		in	1956		81		in	2021
Cooling Degree Days		0		0		0		-0		3		in	2016		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		54		60		52		+2		67		in	2016		29		in	1972
Minimum Dew Point		49		37		40		+9		60		in	2016		19		in	2018
Average  Dew Point		52		49		46		+6		64		in	2016		26		in	2018
Month Avg Max Dew Point		57.7		56.6		55.6		+2.1		60.7		in	1990		44.1		in	1981
Month Avg Min Dew Point		48.7		46.6		43.7		+5.0		52.8		in	2021		32.2		in	1981
Month Average Dew Point		53.5		51.8		49.6		+3.9		56.9		in	2021		38.1		in	1981
Precipitation		.02		.10		.14		-.12		3.38		in	1932
One Hour Rain		.02		.05						.43		in	1990
Half Hour Rain		.01		.30						.30		in	2022
Hourly Rain Rate		.00		.11						.42		in	2009
Month Precipitation		.48		4.14		2.52		-2.04		8.13		in	2005		.01		in	1963
Year Precipitation		42.58		33.95		35.60		+6.98		51.27		in	1998		18.89		in	1957
Snow
Snow Depth
Month Snow						0.0				0.7		in	1979				in
Season Snow						0.0				0.7		in	1979				in
		October 18, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		98%		99%		90%		+8%		100%		in	2016		62%		in	1958
Minimum Humidity		74%		50%		54%		+20%		94%		in	1989		29%		in	1958
Average Humidity		86%		75%		72%		+14%		96%		in	1989		46%		in	1958
Maximum Barometer		30.17		29.68		30.12		+00.05		30.63		in	1985		29.57		in	1964
Minimum Barometer		30.06		29.55		29.88		+00.18		30.40		in	2020		29.34		in	1903
Average Barometer		30.12		29.62		30.00		+00.11		30.47		in	2020		29.53		in	1964
Average Wind		1.8		5.8		7.3		-5.5		15.3		in	2009		1.8		in	2023
Direction		S		WNW		W				NNE					S
High Wind Gust		10		23		24		-14		43		in	1999		10		in	2023
Direction		SSW		SSW		SSW				NNW					SSW
Maximum Water Temp		61.7		63.5		61.3		+0.4		66.0		in	2021		56.7		in	2009
Minimum Water Temp		61.2		62.4		59.6		+1.6		63.9		in	2021		53.6		in	2009
Average Water Temp		61.5		63.0		60.4		+1.0		65.0		in	2021		55.2		in	2009
Sunrise/ AM Twilight		7:00:13 AM						6:33:08 AM
Sunset / PM Twilight		5:59:37 PM						6:27:30 PM
Length Of Day		10:58:46
Special Conditions		None
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