Portsmouth Rhode Island Weather Almanac
Friday, May 9, 2025
Mostly Cloudy early then Very Heavy Rain and Fog, Cooler
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2025
		May 9, 2025								Record					Record
Observed Daily Data		2025		2025		Norm		Depart		Highest					Lowest
Maximum Temperature		67		65		63		+4		83		in	1957		46		in	1912
Minimum Temperature		53		49		46		+7		55		in	1964		29		in	1956
Average Temperature		60		57		55		+5		69		in	1957		41		in	2020
Month Avg Max Temperature		67.0		61.9		61.3		+5.7		74.0		in	1930		50.1		in	1917
Month Avg Min Temperature		52.8		46.6		45.3		+7.4		52.8		in	2025		38.2		in	1917
Month Average Temperature		60.0		54.6		53.4		+6.6		63.4		in	1930		44.4		in	1917
High Heat Index										80		in	1957
Low Wind Chill															25		in	1956
Heating Degree Days		5		8		10		-5		24		in	2020		0		in	1979
Month Heating DD		45		94		104		-59		185		in	1917		26		in	1930
Season Heating DD		4860		4825		5277		-417		6344		in	1905		4400		in	2012
Cooling Degree Days		0		0		0		+0		4		in	1957		0		in	All
Month Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Year Cooling DD		0		0		0		+0		19		in	2001		0		in	Many
Maximum Dew Point		60		56		51		+9		63		in	2000		34		in	1950
Minimum Dew Point		52		45		39		+13		53		in	2012		8		in	1962
Average  Dew Point		56		51		45		+11		57		in	2013		25		in	1962
Month Avg Max Dew Point		59.8		53.8		49.4		+10.3		59.8		in	2025		34.7		in	1952
Month Avg Min Dew Point		49.4		43.6		37.8		+11.7		49.6		in	1998		23.8		in	1974
Month Average Dew Point		54.9		49.0		43.7		+11.2		54.9		in	2025		31.3		in	1952
Precipitation		1.85		.00		.11		+1.74		1.85		in	2025
One Hour Rain		.47		.00						.47		in	2025
Half Hour Rain		.24		.00						.24		in	2025
Hourly Rain Rate		1.46		.00						2.20		in	2013
Month Precipitation		2.75		1.48		1.06		+1.69		3.92		in	1954		.00		in	2015
Year Precipitation		15.55		24.40		16.79		-1.24		31.60		in	1983		9.85		in	1927
Snow		0.0		0.0		0.0		+0.0		1.7		in	1977		0.0		in	Many
Snow Depth		0		0		0				0		in			0		in	Many
Month Snow		0.0		0.0		T				1.7		in	1977		0.0		in	Many
Season Snow		11.9		12.7		33.8		21.9		84.1		in	1996		5.0		in	1998
		May 9, 2025								Record					Record
Observed Daily Data		2025		2024		Norm		Depart		Highest					Lowest
Maximum Humidity		99%		99%		89%		+10%		100%		in	2018		53%		in	1957
Minimum Humidity		67%		57%		53%		+14%		94%		in	2012		13%		in	1962
Average Humidity		83%		78%		71%		+12%		97%		in	1998		36%		in	1957
Maximum Barometer		30.02		29.83		30.04		-00.02		30.49		in	1986		29.47		in	1967
Minimum Barometer		29.83		29.62		29.78		+00.05		30.31		in	2019		29.17		in	1967
Average Barometer		29.93		29.73		29.91		+00.01		30.38		in	1996		29.32		in	1967
Average Wind		7.7		7.3		8.5		-0.8		17.0		in	2020		2.8		in	1993
Direction		E		N		SW				WNW					SSW
High Wind Gust		25		23		27		-2		52		in	1958		13		in	1993
Direction		ENE		N		SW				SW					SW
Maximum Water Temp		57.6		53.1		53.4		+4.2		60.6		in	2007		44.1		in	2020
Minimum Water Temp		54.1		50.5		50.2		+3.9		54.1		in	2025		42.3		in	2020
Average Water Temp		55.9		51.8		51.8		+4.0		56.8		in	2007		43.2		in	2020
Sunrise/ AM Twilight		5:31:31 AM						5:00:01 AM
Sunset / PM Twilight		7:51:49 PM						8:23:17 PM
Length Of Day		14:20:34
Special Conditions		Fog
Comments		6 Straight Hours of Heavy Rain
Hour-by-Hour Weather For May 9, 2025
Climate Weather for May 9
Weather History For May 9
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