Portsmouth Rhode Island Weather Almanac
Sunday, May 9, 2021
Clear early, Partly Cloudy Day to Cloudy and Light Rain PM, Warmer
Climate Normal Period						Climate Record Period
1991- 2020						1893 - 2021
		May 9, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Temperature		62		47		63		-1		83		in	1957		46		in	1912
Minimum Temperature		43		35		46		-3		55		in	1964		29		in	1956
Average Temperature		53		41		55		-2		69		in	1957		41		in	2020
Month Avg Max Temperature		61.8		61.9		61.3		+0.4		74.0		in	1930		50.1		in	1917
Month Avg Min Temperature		45.7		44.6		45.3		+0.3		52.4		in	1930		38.2		in	1917
Month Average Temperature		54.0		53.4		53.4		+0.6		63.4		in	1930		44.4		in	1917
HDD		12		24		10		+2		24		in	2020		0		in	1979
Month HDD		99		104		104		-5		185		in	1917		26		in	1930
Season HDD		4908		4925		5277		-369		6344		in	1905		4400		in	2012
CDD		0		0		0		+0		4		in	1957		0		in
Month CDD		0		0		0		+0		19		in	2001		0		in	2021
Year CDD		0		0		0		+0		19		in	2001		0		in	2021
Maximum Dew Point		49		41		51		-2		63		in	2000		34		in	1950
Minimum Dew Point		40		15		39		+1		53		in	2012		8		in	1962
Average  Dew Point		45		28		45		+0		57		in	2013		25		in	1962
Month Avg Max Dew Point		49.1		47.2		49.4		-0.3		57.4		in	1998		34.7		in	1952
Month Avg Min Dew Point		37.8		32.4		37.8		+0.0		49.6		in	1998		23.8		in	1974
Month Average Dew Point		43.6		40.0		43.7		-0.1		53.5		in	1998		31.3		in	1952
Precipitation		.02		.25		.11		-.09		1.72		in	2012
One Hour		.02		.12						.38		in	1978
Hourly Rate		.00		.19						2.20		in	2013
Month Precipitation		1.39		1.46		1.06		+.33		3.92		in	1954		.00		in	2015
Year Precipitation		13.09		17.66		16.79		-3.70		31.60		in	1983		9.85		in	1927
Snow		0.0		0.0		0.0		+0.0		1.7		in	1977
Snow Depth		0		0								in
Month Snow		0.0		0.0		0.0		+0.0		1.7		in	1977		0.0		in
Season Snow		27.7		12.9		33.5		-5.8		84.1		in	1996		5.0		in	1998
		May 9, 2021								Record					Record
Observed Daily Data		2021		2020		Norm		Depart		Highest					Lowest
Maximum Humidity		93%		94%		89%		+4%		100%		in	2018		53%		in	1957
Minimum Humidity		56%		31%		54%		+2%		94%		in	2012		13%		in	1962
Average Humidity		75%		63%		71%		+3%		97%		in	1998		36%		in	1957
Maximum Barometer		29.99		29.94		30.04		-00.05		30.49		in	1986		29.47		in	1967
Minimum Barometer		29.92		29.44		29.77		+00.15		30.31		in	2019		29.17		in	1967
Average Barometer		29.96		29.69		29.91		+00.05		30.38		in	1996		29.32		in	1967
Average Wind		7.3		17.0		8.5		-1.2		17.0		in	2020		2.8		in	1993
Direction		SW		WNW		SW				WNW					SSW
High Wind Gust		32		43		27		+5		52		in	1958		13		in	1993
Direction		SSW		WNW		SW				SW					SW
High Heat Index										80		in	1957
Wind Chill		40		26											25		in	1977
Maximum Water Temp		52.5		44.1		53.2		-0.7		60.6		in	2007		44.1		in	2020
Minimum Water Temp		50.2		42.3		49.9		+0.3		54.0		in	2010		42.3		in	2020
Average Water Temp		51.4		43.2		51.6		-0.2		56.8		in	2007		43.2		in	2020
Sunrise/ AM Twilight		5:31:01 AM						5:00:01 AM
Sunset / PM Twilight		7:52:17 PM						8:23:17 PM
Length Of Day		14:21:16
Special Conditions		None
Comments		Latest measurable snow occurred in 1977 (1.7 inches)
Hour-by-Hour Weather For May 9, 2021
Climate Weather for May 9
Weather History For May 9
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