Portsmouth Rhode Island Weather Almanac
Saturday, October 17, 2020
Cloudy, Heavy Rain & Fog early, Partly Cloudy Day to Clear PM, Windy and Cooler
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		October 17, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		58		61		61		-3		83		in	1938		50		in	2009
Minimum Temperature		42		50		45		-3		62		in	1928		32		in	1937
Average Temperature		50		56		53		-3		69		in	1938		42		in	1937
Precipitation		1.21		.99		.13		+1.08		1.93		in	1914
One Hour		.29		.65						.65		in	2019
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0						0		in
HDD		15		9		12		+3		23		in	1937		0		in	2016
CDD		0		0		0		+0		4		in	1938		0		in
Maximum Dew Point		51		60		51		+0		65		in	2016		32		in	1978
Minimum Dew Point		35		44		39		-4		57		in	2014		20		in	1970
Average  Dew Point		43		52		45		-2		61		in	2016		28		in	1978
Maximum Humidity		99%		96%		91%		+8%		100%		in	2001		68%		in	1982
Minimum Humidity		45%		61%		55%		-10%		98%		in	1993		28%		in	1953
Average Humidity		72%		79%		73%		-1%		99%		in	1993		54%		in	1954
Maximum Barometer		30.45		29.47		30.11		+00.34		30.68		in	1985		29.47		in	2019
Minimum Barometer		29.98		28.88		29.86		+00.12		30.27		in	1998		28.88		in	2019
Average Barometer		30.22		29.18		29.99		+00.23		30.46		in	1985		29.18		in	2019
Average Wind		9.3		13.1		6.9		+2.4		14.3		in	1977		1.6		in	1960
Direction		NNW		W		W				SW					N
High Wind Gust		30		48		23		+7		77		in	1908		11		in	1960
Direction		NNW		ESE		NNW				SE					N
High Heat Index										85		in	1938
Wind Chill		37		45											30		in	1978
Maximum Water Temp		63.1		60.4		61.3		+1.8		64.8		in	2014		56.9		in	2009
Minimum Water Temp		61.0		58.9		59.5		+1.5		64.1		in	2014		54.6		in	2010
Average Water Temp		62.1		59.7		60.4		+1.6		64.5		in	2014		55.8		in	2009
Sunrise/ AM Twilight		7:00:58 AM						6:33:02 AM
Sunset / PM Twilight		5:59:42 PM						6:27:38 PM
Length Of Day		10:58:44
Special Conditions		Fog
Comments
		October 17, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		66.3		63.5		64.1		+2.2		71.9		in	1990		55.7		in	1896
Avg Minimum Temperature		50.8		50.4		48.5		+2.3		55.1		in	2005		39.8		in	1981
Average Temperature		58.9		57.2		56.2		+2.6		63.3		in	1990		49.9		in	1981
Total Precipitation		3.25		3.36		2.10		+1.15		8.11		in	2005		.01		in	1963
Total Snow		0.0		0.0		0.0		+0.0		0.7		in	1979		0.0		in
Total HDD		105		140		150		-45		256		in	1981		54		in	1990
Total CDD		1		8		5		-4		48		in	1954		0		in	2015
Avg Maximum Dew Point		57.7		57.2		53.8		+3.9		62.1		in	2018		43.2		in	1981
Avg Minimum Dew Point		45.2		45.4		42.4		+2.7		52.6		in	2005		32.1		in	1981
Average  Dew Point		51.7		51.6		48.1		+3.6		56.7		in	2005		37.6		in	1981
		October 17, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		28.51		42.76		37.61		-9.10		51.27		in	1998		18.73		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)		161		183		239		-78		408		in	1956		108		in	2011
Total CDD (since Jan 1)		868		731		563		+305		868		in	2020		290		in	1902
Hour-by-Hour Weather For October 17, 2020
Climate Weather for October 17
Weather History For October 17
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