Portsmouth Rhode Island Weather Almanac
Sunday, October 18, 2020
Clear to Partly Cloudy PM, Light Winds and Continued Cool
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		October 18, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		62		60		61		+1		77		in	1908		46		in	1939
Minimum Temperature		40		47		45		-5		63		in	1928		29		in	1978
Average Temperature		51		54		53		-2		68		in	2016		39		in	1939
Precipitation		.00		.00		.13		-.13		3.38		in	1932
One Hour		.00		.00						.43		in	1990
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0						0		in
HDD		14		11		12		+2		26		in	1939		0		in	2016
CDD		0		0		0		+0		3		in	2016		0		in
Maximum Dew Point		46		45		50		-4		67		in	2016		29		in	1972
Minimum Dew Point		38		39		38		-0		60		in	2016		19		in	2018
Average  Dew Point		42		42		44		-2		64		in	2016		26		in	2018
Maximum Humidity		93%		80%		90%		+3%		100%		in	2016		62%		in	1958
Minimum Humidity		46%		53%		54%		-8%		94%		in	1989		29%		in	1958
Average Humidity		70%		67%		72%		-2%		96%		in	1989		46%		in	1958
Maximum Barometer		30.54		29.94		30.13		+00.41		30.63		in	1985		29.57		in	1964
Minimum Barometer		30.40		29.47		29.89		+00.51		30.40		in	2020		29.34		in	1903
Average Barometer		30.47		29.71		30.01		+00.46		30.47		in	2020		29.53		in	1964
Average Wind		3.3		11.6		7.3		-4.0		15.3		in	2009		2.2		in	1994
Direction		ENE		NW		W				NNE					NW
High Wind Gust		17		31		24		-7		43		in	1999		10		in	1994
Direction		S		NNW		WNW				NNW					SSE
High Heat Index										78		in	1908
Wind Chill		40		42											26		in	2009
Maximum Water Temp		62.2		59.9		61.0		+1.2		64.9		in	2014		56.7		in	2009
Minimum Water Temp		61.0		58.7		59.2		+1.8		63.8		in	2014		53.6		in	2009
Average Water Temp		61.6		59.3		60.1		+1.5		64.4		in	2014		55.2		in	2009
Sunrise/ AM Twilight		7:02:06 AM						6:34:07 AM
Sunset / PM Twilight		5:58:12 PM						6:26:11 PM
Length Of Day		10:56:06
Special Conditions		None
Comments
		October 18, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		66.1		63.3		63.9		+2.2		71.9		in	1990		55.6		in	1896
Avg Minimum Temperature		50.2		50.2		48.3		+1.9		54.6		in	1990		39.6		in	1981
Average Temperature		58.4		57.1		56.1		+2.4		63.6		in	1990		49.8		in	1981
Total Precipitation		3.25		3.36		2.23		+1.02		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		119		151		162		-43		273		in	1981		54		in	1990
Total CDD		1		8		5		-4		48		in	1954		0		in	2015
Avg Maximum Dew Point		57.1		56.5		53.6		+3.4		60.7		in	1990		44.1		in	1981
Avg Minimum Dew Point		44.8		45.0		42.2		+2.6		52.1		in	2005		32.2		in	1981
Average  Dew Point		51.2		51.1		47.9		+3.2		56.2		in	2005		38.1		in	1981
		October 18, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		28.51		42.76		37.74		-9.23		51.27		in	1998		18.89		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)		175		194		251		-76		415		in	1956		112		in	2011
Total CDD (since Jan 1)		868		731		563		+305		868		in	2020		290		in	1902
Hour-by-Hour Weather For October 18, 2020
Climate Weather for October 18
Weather History For October 18
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