Portsmouth Rhode Island Weather Almanac
Wednesday, December 8, 2021
Mostly Cloudy early, Light Rain Mid-Day and Light Snow & Fog PM, Breezy and Colder
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2021
		December 8, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		38		31		45		-7		62		in	1951		16		in	1906
Minimum Temperature		31		27		32		-1		49		in	1974		4		in	1906
Average Temperature		35		29		38		-3		54		in	1951		10		in	1906
Month Avg Max Temperature		48.3		45.8		45.9		+2.4		57.9		in	1998		32.9		in	1954
Month Avg Min Temperature		35.4		34.9		32.9		+2.5		44.3		in	1998		15.0		in	1989
Month Average Temperature		42.0		40.5		39.3		+2.8		51.3		in	1998		25.6		in	1989
High Heat Index
Low Wind Chill		21		17		20		+1							-3		in	1906
Heating Degree Days		30		36		27		+3		55		in	1906		11		in	1951
Month HDD		184		196		206		-22		315		in	1989		110		in	1998
Season HDD		978		989		1196		-218		1603		in	1904		924		in	2011
Cooling Degree Days		0		0		0		+0				in					in
Month CDD		0		0		0		+0		0		in					in
Year Cooling Degree Days		795		871		609		+186		871		in	2020		290		in	1902
Maximum Dew Point		34		24		38		-4		59		in	1951		-2		in	1989
Minimum Dew Point		21		19		23		-2		46		in	1974		-6		in	1989
Average  Dew Point		28		22		30		-2		49		in	1974		-4		in	1989
Month Avg Max Dew Point		40.5		38.0		37.6		+2.9		49.1		in	1982		20.9		in	1989
Month Avg Min Dew Point		23.8		26.3		22.8		+0.9		36.3		in	2001		-3.3		in	1989
Month Average Dew Point		32.4		32.4		30.2		+2.2		42.4		in	2001		8.8		in	1989
Precipitation		.01		.00		.15		-.14		1.01		in	1950
One Hour		T		.00						.32		in	1996
Hourly Rate		.00		.00						2.33		in	2011
Month Precipitation		.40		2.53		1.20		-.80		4.37		in	1996		.00		in	1988
Year Precipitation		45.98		39.41		42.63		+3.35		61.79		in	1983		24.39		in	1957
Snow		0.1		0.0		0.2		-0.1		2.3		in	2000				in
Snow Depth		0		0						14		in	1981				in
Month Snow		0.1		T		1.2		-1.1		17.0		in	1981		0.0		in	2017
Season Snow		0.1		0.6		1.8		-1.7		19.5		in	1898		0.0		in	2017
		December 8, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		98%		85%		82%		+16%		100%		in	2012		43%		in	1989
Minimum Humidity		57%		66%		53%		+4%		93%		in	2012		24%		in	1979
Average Humidity		78%		76%		68%		+10%		97%		in	2012		37%		in	1989
Maximum Barometer		30.19		29.81		30.20		-00.01		30.69		in	2014		29.46		in	1981
Minimum Barometer		29.81		29.62		29.87		-00.06		30.42		in	2013		29.20		in	2011
Average Barometer		30.00		29.72		30.04		-00.04		30.55		in	2014		29.40		in	1981
Average Wind		8.7		10.7		7.8		+0.9		16.8		in	1961		1.3		in	1967
Direction		NNE		NNW		NW				NW					SSE
High Wind Gust		23		31		25		-2		54		in	1979		10		in	1967
Direction		N		NNW		NW				WNW					E
Maximum Water Temp		50.4		48.7		47.4		+3.0		53.5		in	2011		43.0		in	2007
Minimum Water Temp		48.6		45.7		44.5		+4.1		51.1		in	2011		39.4		in	2000
Average Water Temp		49.5		47.2		46.0		+3.5		52.3		in	2011		41.7		in	2019
Sunrise/ AM Twilight		6:57:42 AM						6:28:11 AM
Sunset / PM Twilight		4:16:56 PM						4:46:27 PM
Length Of Day		9:19:14
Special Conditions		Fog
Comments		1st measurable snow of season
Hour-by-Hour Weather For December 8, 2021
Climate Weather for December 8
Weather History For December 8
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