Portsmouth Rhode Island Weather Almanac
Saturday, December 16, 2023
Clear to Partly Cloudy PM, Light Winds, Continued Warm
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		December 16, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		53		45		43		+10		62		in	1971		18		in	1910
Minimum Temperature		36		40		30		+6		52		in	2021		6		in	1910
Average Temperature		45		43		36		+9		54		in	2021		12		in	1910
Month Avg Max Temperature		47.5		44.8		44.9		+2.6		54.4		in	2015		30.4		in	1904
Month Avg Min Temperature		35.3		33.4		31.8		+3.4		42.1		in	2015		16.3		in	1989
Month Average Temperature		41.6		39.3		38.3		+3.4		48.6		in	2015		24.9		in	1904
High Heat Index										#N/A		in	#N/A
Low Wind Chill		32		33		18		+14							-9		in	1951
Heating Degree Days		20		22		29		-9		53		in	1910		11		in	2021
Month Heating DD		374		411		427		-53		642		in	1904		263		in	2015
Season Heating DD		1315		1232		1417		-102		1954		in	1904		1058		in	2015
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		38		44		36		+2		58		in	1971		4		in	1961
Minimum Dew Point		33		39		21		+12		47		in	2021		-10		in	1961
Average  Dew Point		36		42		28		+8		50		in	2021		-3		in	1961
Month Avg Max Dew Point		40.5		39.1		36.2		+4.3		48.6		in	2015		18.7		in	1989
Month Avg Min Dew Point		29.7		25.1		21.1		+8.6		37.7		in	2015		-1.2		in	1989
Month Average Dew Point		35.4		32.4		28.6		+6.7		43.3		in	2015		8.8		in	1989
Precipitation		.00		1.55		.15		-.15		1.95		in	1960
One Hour Rain		.00		.12						.37		in	1960
Half Hour Rain		.00		.08						.19		in	2005
Hourly Rain Rate		.00		.32						2.38		in	2005
Month Precipitation		2.43		3.51		2.41		+.02		7.06		in	1981		.20		in	1998
Year Precipitation		51.48		41.32		43.84		+7.64		63.81		in	1983		27.10		in	1965
Snow		0.0		0.0		0.2		-0.2		6.2		in	1989
Snow Depth		0		0		1		-1		11		in	1904
Month Snow		0.1		1.5		2.8		-2.7		19.9		in	1981		0.0		in	2015
Season Snow		0.1		1.5		3.4		+3.4		21.1		in	1898		0.0		in	2015
		December 16, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		94%		99%		87%		+7%		100%		in	2005		52%		in	1951
Minimum Humidity		56%		96%		58%		-2%		96%		in	2022		22%		in	1961
Average Humidity		75%		98%		72%		+3%		98%		in	2022		39%		in	1988
Maximum Barometer		30.58		30.06		30.15		+00.43		30.62		in	1994		29.54		in	1987
Minimum Barometer		30.27		29.39		29.79		+00.48		30.49		in	1994		28.87		in	1972
Average Barometer		30.43		29.73		29.97		+00.46		30.56		in	1994		29.25		in	1987
Average Wind		5.0		13.5		8.7		-3.7		17.0		in	1972		1.2		in	1986
Direction		E		ENE		WNW				W					E
High Wind Gust		23		31		28		-5		56		in	1927		10		in	1986
Direction		NNE		ENE		WNW				W					W
Maximum Water Temp		48.7		49.3		46.1		+2.6		51.3		in	2011		39.4		in	2010
Minimum Water Temp		46.0		45.3		43.6		+2.4		49.8		in	2015		36.7		in	2010
Average Water Temp		47.4		47.3		44.9		+2.5		50.5		in	2011		38.1		in	2010
Sunrise/ AM Twilight		7:05:07 AM						6:35:44 AM
Sunset / PM Twilight		4:16:03 PM						4:45:57 PM
Length Of Day		9:10:56
Special Conditions		None
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