Portsmouth Rhode Island Weather Almanac
Monday, May 11, 2020
Partly Cloudy, Mostly Cloudy and Light Rain Afternoon, Partly Cloudy PM, Continued Cool
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		May 11, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		55		69		63		-8		82		in	2001		46		in	1919
Minimum Temperature		44		51		47		-3		59		in	2015		34		in	1900
Average Temperature		50		60		55		-5		69		in	2001		44		in	1963
Precipitation		.07		T		.12		-.05		1.54		in	1989
One Hour		.06		T						.41		in	1951
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0								in
HDD		15		5		10		+5		21		in	1963		0		in	2015
CDD		0		0		0		+0		4		in	2001
Maximum Dew Point		49		55		50		-1		65		in	2015		32		in	1966
Minimum Dew Point		41		45		38		+3		59		in	2015		19		in	1966
Average  Dew Point		45		50		44		+1		62		in	2015		26		in	1966
Maximum Humidity		91%		95%		88%		+3%		100%		in	2015		55%		in	1966
Minimum Humidity		71%		44%		50%		+21%		97%		in	1989		22%		in	2001
Average Humidity		81%		70%		69%		+12%		99%		in	1989		40%		in	1966
Maximum Barometer		29.97		30.05		30.05		-00.08		30.43		in	1966		29.62		in	1954
Minimum Barometer		29.74		29.90		29.83		-00.09		30.30		in	2010		29.41		in	1990
Average Barometer		29.86		29.98		29.94		-00.09		30.36		in	2010		29.57		in	1954
Average Wind		8.9		6.7		7.5		+1.4		14.1		in	1986		3.1		in	2007
Direction		S		S		SSW				NNE					SSE
High Wind Gust		23		19		25		-2		43		in	1945		14		in	2007
Direction		AAQ		NW		SSW				NW					S
High Heat Index										81		in	1993
Wind Chill		39													35		in	1945
Maximum Water Temp		44.4		51.3		54.3		-9.9		59.5		in	2007		44.4		in	2020
Minimum Water Temp		43.2		47.5		50.8		-7.6		55.7		in	2013		43.2		in	2020
Average Water Temp		43.8		49.4		52.5		-8.7		56.5		in	2013		43.8		in	2020
Sunrise/ AM Twilight		5:28:37 AM						4:57:22 AM
Sunset / PM Twilight		7:54:35 PM						8:25:50 PM
Length Of Day		14:25:58
Special Conditions		None
Comments
		May 11, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		61.0		60.3		61.7		-0.7		72.6		in	2001		51.1		in	1917
Avg Minimum Temperature		43.6		45.3		45.4		-1.7		51.4		in	1930		39.1		in	1917
Average Temperature		52.3		52.8		53.4		-1.0		61.9		in	1930		45.1		in	1917
Total Precipitation		1.53		1.61		1.38		+.15		4.71		in	1989		.00		in	2015
Total Snow		0.0		0.0		T		+0.0		1.7		in	1977		0.0		in
Total HDD		137		131		126		+11		216		in	1917		44		in	1930
Total CDD		0		0		0		+0		23		in	2001		0		in
Avg Maximum Dew Point		47.0		51.6		48.7		-1.7		56.2		in	1998		37.8		in	1952
Avg Minimum Dew Point		32.6		41.0		36.1		-3.4		48.6		in	1998		26.2		in	1968
Average  Dew Point		39.8		46.3		42.4		-2.6		52.4		in	1998		32.7		in	1968
		May 11, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		17.73		19.27		18.42		-.69		31.68		in	1983		10.12		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)		4958		5341		5460		-502		6359		in	1905		4418		in	2012
Total CDD (since Jan 1)		0		0		0		+0.0		23		in	2001		0		in	2020
Hour-by-Hour Weather For May 11, 2020
Climate Weather for May 11
Weather History For May 11
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