Portsmouth Rhode Island Weather Almanac
Monday, May 18, 2020
Cloudy to Partly Cloudy PM, Light Winds, Seasonal Temperatures
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		May 18, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		65		69		65		+0		82		in	2017		45		in	2007
Minimum Temperature		50		53		48		+2		62		in	2017		35		in	1983
Average Temperature		58		61		57		+1		72		in	2017		44		in	2007
Precipitation		.00		.00		.11		-.11		1.93		in	2002
One Hour		.00		.00						.40		in	1970
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0								in
HDD		7		4		8		-1		21		in	2007		0		in	2017
CDD		0		0		0		+0		7		in	2017
Maximum Dew Point		54		56		53		+1		67		in	2017		33		in	1981
Minimum Dew Point		46		41		41		+5		57		in	2017		25		in	1981
Average  Dew Point		50		49		47		+3		62		in	2017		29		in	1981
Maximum Humidity		91%		93%		91%		-0%		100%		in	2018		63%		in	1981
Minimum Humidity		64%		37%		57%		+7%		91%		in	2004		25%		in	1983
Average Humidity		78%		65%		74%		+3%		96%		in	2004		45%		in	1981
Maximum Barometer		30.24		30.11		30.07		+00.17		30.50		in	1983		29.48		in	2008
Minimum Barometer		30.14		29.76		29.86		+00.28		30.34		in	2003		29.05		in	1985
Average Barometer		30.19		29.94		29.97		+00.22		30.37		in	2003		29.27		in	1985
Average Wind		3.5		9.5		6.4		-2.9		14.6		in	2000		1.9		in	1995
Direction		NE		S		S				S					SSE
High Wind Gust		17		19		22		-5		41		in	2000		11		in	1995
Direction		ENE		NW		S				SW					NW
High Heat Index										83		in	2017
Wind Chill															32		in	1981
Maximum Water Temp		50.5		51.6		55.6		-5.1		59.5		in	2017		50.5		in	2020
Minimum Water Temp		45.9		48.2		52.6		-6.7		56.6		in	2013		45.9		in	2020
Average Water Temp		48.2		49.9		54.1		-5.9		57.9		in	2013		48.2		in	2020
Sunrise/ AM Twilight		5:21:58 AM						4:49:59 AM
Sunset / PM Twilight		8:01:32 PM						8:33:30 PM
Length Of Day		14:39:34
Special Conditions		None
Comments
		May 18, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		62.3		60.1		62.7		-0.4		69.7		in	1993		54.1		in	1917
Avg Minimum Temperature		44.1		45.2		46.2		-2.2		50.2		in	1930		40.4		in	1967
Average Temperature		53.4		52.6		54.4		-0.9		59.9		in	1930		47.8		in	1917
Total Precipitation		2.15		3.24		2.16		-.01		6.51		in	2006		.02		in	2015
Total Snow		0.0		0.0		T		+0.0		1.7		in	1977		0.0		in
Total HDD		208		218		191		+17		310		in	1917		96		in	1993
Total CDD		0		0		0		+0		27		in	2001		0		in
Avg Maximum Dew Point		47.8		50.8		49.8		-2.0		56.4		in	2004		41.0		in	1966
Avg Minimum Dew Point		34.1		40.9		37.6		-3.5		46.3		in	1953		28.8		in	1966
Average  Dew Point		41.2		45.9		43.7		-2.5		50.4		in	1998		34.9		in	1966
		May 18, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		18.35		20.90		19.20		-.85		33.69		in	1983		10.69		in	1927
Total Snow (since Jul 1 19)		12.9		21.1		31.8		-18.9		84.1		in	1996		5.0		in	1998
Total HDD (since Jul 1 19)		5029		5428		5525		-496		6439		in	1905		4454		in	2012
Total CDD (since Jan 1)		0		0		0		+0.0		27		in	2001		0		in	2020
Hour-by-Hour Weather For May 18, 2020
Climate Weather for May 18
Weather History For May 18
Weather Calendar
Back To Weather Stat Page
Home