Portsmouth Rhode Island Weather Almanac
Wednesday, October 21, 2020
Dense Fog and Drizzle early then Cloudy, Foggy and Very Warm
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		October 21, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		69		65		60		+9		79		in	1920		44		in	1974
Minimum Temperature		60		50		44		+16		61		in	2016		28		in	1972
Average Temperature		65		58		52		+13		68		in	1920		37		in	1974
Precipitation		.02		.03		.13		-.11		1.98		in	1944
One Hour		.01		.02						.53		in	1976
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0						0		in
HDD		0		7		13		-13		28		in	1974		0		in	2020
CDD		0		0		0		+0		3		in	1920		0		in
Maximum Dew Point		65		53		49		+16		68		in	2016		21		in	1974
Minimum Dew Point		59		46		37		+22		60		in	2016		15		in	1974
Average  Dew Point		62		50		43		+19		64		in	2016		18		in	1974
Maximum Humidity		100%		94%		89%		+11%		100%		in	2020		59%		in	1952
Minimum Humidity		88%		56%		53%		+35%		88%		in	2020		25%		in	1952
Average Humidity		94%		75%		71%		+23%		94%		in	2020		42%		in	1952
Maximum Barometer		30.32		30.15		30.16		+00.16		30.64		in	1933		29.66		in	1969
Minimum Barometer		30.22		29.98		29.89		+00.33		30.44		in	1972		29.16		in	1976
Average Barometer		30.27		30.07		30.03		+00.24		30.51		in	1983		29.46		in	1976
Average Wind		4.7		11.0		6.8		-2.1		15.8		in	1976		1.7		in	2005
Direction		SW		NNE		WNW				E					N
High Wind Gust		17		24		23		-6		50		in	1904		10		in	1971
Direction		SW		NNE		SW				SE					NE
High Heat Index										80		in	1920
Wind Chill															23		in	1974
Maximum Water Temp		63.5		58.8		60.5		+3.0		63.7		in	2016		56.7		in	2010
Minimum Water Temp		62.4		57.8		58.9		+3.5		62.6		in	2016		54.1		in	2018
Average Water Temp		63.0		58.3		59.7		+3.3		63.2		in	2016		55.9		in	2018
Sunrise/ AM Twilight		7:05:33 AM						6:37:26 AM
Sunset / PM Twilight		5:53:46 PM						6:21:54 PM
Length Of Day		10:48:13
Special Conditions		Dense Fog
Comments
		October 21, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		66.0		63.2		63.3		+2.7		70.3		in	1990		55.5		in	1896
Avg Minimum Temperature		50.4		49.3		47.8		+2.7		54.6		in	2011		39.7		in	1981
Average Temperature		58.5		56.6		55.5		+3.0		61.7		in	1990		49.9		in	1981
Total Precipitation		3.65		3.41		2.62		+1.03		8.13		in	2005		.01		in	1963
Total Snow		0.0		0.0		0.0		+0.0		0.7		in	1979		0.0		in
Total HDD		137		185		200		-63		318		in	1981		86		in	2011
Total CDD		1		8		5		-4		48		in	1954		0		in	2015
Avg Maximum Dew Point		57.5		55.6		53.1		+4.4		60.3		in	2007		43.4		in	1974
Avg Minimum Dew Point		45.5		44.4		41.5		+4.0		50.0		in	2005		31.6		in	1981
Average  Dew Point		51.7		50.3		47.3		+4.4		54.9		in	2007		37.7		in	1974
		October 21, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		28.91		42.81		38.13		-9.22		51.27		in	1998		19.78		in	1957
Total Snow (since Jul 1 20)		0.0		0.0		0.0		+0.0		0.7		in	1979		0.0		in
Total HDD (since Jul 1 20)		193		228		289		-96		465		in	1956		124		in	1920
Total CDD (since Jan 1)		868		731		563		+305		868		in	2020		290		in	1902
Hour-by-Hour Weather For October 21, 2020
Climate Weather for October 21
Weather History For October 21
Weather Calendar
Back To Weather Stat Page
Home