Portsmouth Rhode Island Weather Almanac
Wednesday, May 20, 2020
Clear and Cooler
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2020
		May 20, 2020								Record					Record
Observed Daily Data		Observed		2019		Normal		Depart		Highest					Lowest
Maximum Temperature		65		73		66		-1		85		in	1996		51		in	1948
Minimum Temperature		42		59		49		-7		60		in	1903		38		in	1992
Average Temperature		54		66		57		-3		72		in	1903		47		in	1948
Precipitation		.00		.01		.11		-.11		1.15		in	1952
One Hour		.00		.01						.43		in	1984
Snow		0.0		0.0		0.0		+0.0		0.0		in
Snow Depth		0		0								in
HDD		11		0		8		+3		18		in	1948		0		in	1996
CDD		0		1		0		+0		7		in	1903
Maximum Dew Point		44		65		53		-9		70		in	1996		38		in	2002
Minimum Dew Point		34		57		42		-8		57		in	2019		29		in	2002
Average  Dew Point		39		61		48		-9		61		in	2019		34		in	2002
Maximum Humidity		86%		100%		93%		-7%		100%		in	2019		68%		in	1981
Minimum Humidity		32%		72%		56%		-24%		90%		in	1972		24%		in	1981
Average Humidity		59%		86%		75%		-16%		95%		in	1969		46%		in	1981
Maximum Barometer		30.48		29.98		30.05		+00.43		30.58		in	1992		29.65		in	2008
Minimum Barometer		30.39		29.70		29.83		+00.56		30.39		in	2020		29.32		in	1968
Average Barometer		30.44		29.84		29.94		+00.49		30.44		in	2020		29.51		in	1968
Average Wind		7.8		9.5		6.6		+1.2		14.3		in	1985		1.2		in	1996
Direction		NE		SSW		NNE				SSW					SSW
High Wind Gust		21		22		22		-1		51		in	1963		12		in	1951
Direction		E		SSW		NNE				SSW					SE
High Heat Index										88		in	1996
Wind Chill															38		in	1992
Maximum Water Temp		49.5		53.2		56.6		-7.1		61.9		in	2012		49.5		in	2020
Minimum Water Temp		46.2		50.9		53.1		-6.9		57.7		in	2012		46.2		in	2020
Average Water Temp		47.9		52.1		54.9		-7.0		59.8		in	2012		47.9		in	2020
Sunrise/ AM Twilight		5:20:20 AM						4:48:09 AM
Sunset / PM Twilight		8:03:25 PM						8:35:36 PM
Length Of Day		14:43:05
Special Conditions		None
Comments
		May 20, 2020								Record					Record
Month-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		62.6		60.9		63.1		-0.5		69.0		in	1918		56.0		in	1966
Avg Minimum Temperature		44.2		46.2		46.5		-2.4		49.9		in	1930		41.3		in	1967
Average Temperature		53.7		53.5		54.7		-1.0		59.3		in	1930		49.1		in	1966
Total Precipitation		2.15		3.27		2.38		-.23		6.87		in	2006		.09		in	2001
Total Snow		0.0		0.0		T		+0.0		1.7		in	1977		0.0		in
Total HDD		227		226		207		+20		318		in	1966		125		in	1993
Total CDD		0		1		0		+0		27		in	2001		0		in
Avg Maximum Dew Point		47.6		51.9		50.1		-2.6		56.9		in	2004		42.5		in	1967
Avg Minimum Dew Point		34.1		42.1		38.0		-3.9		46.7		in	1953		30.3		in	1967
Average  Dew Point		41.1		47.0		44.1		-3.0		50.7		in	1953		36.4		in	1967
		May 20, 2020								Record					Record
Year-to-Date Summary		Observed		2019		Normal		Depart		Highest					Lowest
Total Precipitation		18.35		20.93		19.42		-1.07		34.03		in	1983		10.81		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)		5048		5436		5541		-493		6456		in	1905		4460		in	2012
Total CDD (since Jan 1)		0		1		0		+0.0		27		in	2001		0		in	2020
Hour-by-Hour Weather For May 20, 2020
Climate Weather for May 20
Weather History For May 20
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