Portsmouth Rhode Island Weather Almanac
Monday, December 4, 2023
Cloudy early, Partly Cloudy Day to Cloudy PM, Light Winds, Continued Warm
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2023
		December 4, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Temperature		52		43		46		+6		68		in	1998		20		in	1906
Minimum Temperature		40		29		33		+7		53		in	1950		5		in	1940
Average Temperature		46		36		39		+7		59		in	1998		13		in	1906
Month Avg Max Temperature		51.3		47.5		46.5		+4.8		59.5		in	1998		29.3		in	1896
Month Avg Min Temperature		43.0		34.0		33.5		+9.5		44.8		in	1998		13.3		in	1989
Month Average Temperature		47.3		41.0		39.8		+7.5		52.5		in	1998		23.3		in	1976
High Heat Index										#N/A		in	#N/A
Low Wind Chill		35		28		23		+12							-11		in	1989
Heating Degree Days		19		29		26		-7		52		in	1906		6		in	1998
Month Heating DD		71		96		101		-30		167		in	1976		50		in	1998
Season Heating DD		1012		917		1091		-79		1459		in	1904		862		in	2011
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		45		33		39		+6		58		in	1990		1		in	1989
Minimum Dew Point		38		24		24		+14		50		in	1950		-11		in	1989
Average  Dew Point		42		29		31		+11		54		in	1950		-5		in	1989
Month Avg Max Dew Point		47.0		41.3		38.5		+8.5		51.0		in	1982		13.8		in	1976
Month Avg Min Dew Point		40.8		25.8		23.8		+17.0		40.8		in	2023		-3.8		in	1989
Month Average Dew Point		44.0		33.8		31.1		+12.9		45.0		in	1982		6.0		in	1976
Precipitation		T		.00		.15		+.00		2.40		in	1990
One Hour Rain		T		.00						.39		in	1990
Half Hour Rain		.00		.00						.05		in	2006
Hourly Rain Rate		.00		.00						.17		in	2006
Month Precipitation		.93		.52		.60		+.33		3.13		in	1893		.00		in	2011
Year Precipitation		49.98		38.33		42.03		+7.95		61.39		in	1983		24.18		in	1957
Snow		0.0		0.0		0.1		-0.1		3.3		in	1901
Snow Depth		0		0		0		-0		4		in	1898
Month Snow		0.0		0.0		0.4		-0.4		4.2		in	2019		0.0		in	2023
Season Snow		T		0.0		1.0		-1.0		19.5		in	1898		0.0		in	2022
		December 4, 2023								Record					Record
Observed Daily Data		2023		2022		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		86%		85%		+14%		100%		in	2001		42%		in	1980
Minimum Humidity		70%		53%		54%		+16%		91%		in	1955		24%		in	2000
Average Humidity		85%		70%		69%		+15%		93%		in	1964		33%		in	1980
Maximum Barometer		29.79		30.20		30.14		-00.35		30.72		in	1966		29.56		in	2019
Minimum Barometer		29.62		30.00		29.81		-00.19		30.55		in	1966		29.01		in	1978
Average Barometer		29.71		30.10		29.98		-00.27		30.64		in	1966		29.47		in	1970
Average Wind		4.8		7.3		7.9		-3.1		19.4		in	1980		1.8		in	1994
Direction		NW		NW		WNW				NW					SSW
High Wind Gust		16		27		25		-9		58		in	1900		11		in	2017
Direction		W		WNW		WNW				E					NE
Maximum Water Temp		50.9		51.3		48.5		+2.4		52.6		in	2009		43.5		in	2000
Minimum Water Temp		49.8		49.5		46.2		+3.6		51.0		in	2009		39.4		in	2002
Average Water Temp		50.4		50.4		47.3		+3.0		51.8		in	2009		41.9		in	2002
Sunrise/ AM Twilight		6:54:58 AM						6:26:06 AM
Sunset / PM Twilight		4:15:14 PM						4:44:31 PM
Length Of Day		9:20:16
Special Conditions		None
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