Portsmouth Rhode Island Weather Almanac
Sunday, May 17, 2020
Cloudy early then Partly Cloudy and Cooler
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		May 17, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		60		65		65		-5		81		in	2015		49		in	1994
Minimum Temperature		48		48		48		+0		57		in	2017		35		in	1956
Average Temperature		54		57		57		-3		68		in	1977		46		in	1956
Precipitation		.00		.03		.11		-.11		1.65		in	1916
One Hour		.00		.02						.41		in	1976
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0								in
HDD		11		8		9		+2		19		in	1956		0		in	2017
CDD		0		0		0		+0		3		in	1977
Maximum Dew Point		48		55		52		-4		65		in	2015		36		in	1967
Minimum Dew Point		44		47		41		+3		53		in	1988		23		in	1956
Average  Dew Point		46		51		47		-1		58		in	2015		31		in	1967
Maximum Humidity		91%		96%		90%		+1%		100%		in	2018		54%		in	1977
Minimum Humidity		60%		69%		53%		+7%		94%		in	1990		22%		in	1993
Average Humidity		76%		83%		71%		+4%		97%		in	1990		44%		in	1977
Maximum Barometer		30.34		29.88		30.05		+00.29		30.50		in	2004		29.49		in	2008
Minimum Barometer		30.24		29.74		29.83		+00.41		30.38		in	2003		29.09		in	1985
Average Barometer		30.29		29.81		29.94		+00.35		30.44		in	2004		29.43		in	2008
Average Wind		6.9		6.3		6.8		+0.1		12.7		in	1967		2.3		in	2018
Direction		S		SSW		SE				WSW					NE
High Wind Gust		18		20		23		-5		39		in	1954		9		in	2018
Direction		S		SSW		SE				W					SSE
High Heat Index										82		in	2015
Wind Chill															32		in	1956
Maximum Water Temp		50.9		50.9		55.6		-4.7		58.5		in	2012		50.9		in	2020
Minimum Water Temp		46.4		48.4		52.2		-5.8		54.9		in	1998		46.4		in	2020
Average Water Temp		48.7		49.7		53.9		-5.2		56.7		in	2012		48.7		in	2020
Sunrise/ AM Twilight		5:22:50 AM						4:50:57 AM
Sunset / PM Twilight		8:00:34 PM						8:32:26 PM
Length Of Day		14:37:44
Special Conditions		None
Comments
		May 17, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		62.1		59.5		62.6		-0.5		69.9		in	1993		53.4		in	1917
Avg Minimum Temperature		43.7		44.7		46.1		-2.4		50.3		in	1930		40.2		in	1967
Average Temperature		53.2		52.1		54.2		-1.1		60.4		in	1930		47.2		in	1917
Total Precipitation		2.15		3.24		2.05		+.10		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		201		214		183		+18		303		in	1917		89		in	1993
Total CDD		0		0		0		+0		27		in	2001		0		in
Avg Maximum Dew Point		47.5		50.5		49.7		-2.2		56.1		in	2004		40.5		in	1966
Avg Minimum Dew Point		33.4		40.9		37.3		-4.0		45.9		in	1953		28.2		in	1966
Average  Dew Point		40.6		45.7		43.5		-2.9		50.3		in	2018		34.4		in	1966
		May 17, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		18.35		20.90		19.09		-.74		33.69		in	1983		10.59		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)		5022		5424		5517		-495		6426		in	1905		4445		in	2012
Total CDD (since Jan 1)		0		0		0		+0.0		27		in	2001		0		in	2020
Hour-by-Hour Weather For May 17, 2020
Climate Weather for May 17
Weather History For May 17
Weather Calendar
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