Portsmouth Rhode Island Weather Almanac
Sunday, October 20, 2024
Continued Clear and Warmer
		Climate Normal Period								Climate Record Period
		1991 - 2020								1893 - 2024
		October 20, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Temperature		69		63		60		+9		77		in	1947		43		in	1974
Minimum Temperature		50		54		46		+4		62		in	1916		29		in	1974
Average Temperature		60		59		53		+7		69		in	1947		36		in	1974
Month Avg Max Temperature		65.6		66.5		63.8		+1.8		70.8		in	1990		55.3		in	1896
Month Avg Min Temperature		47.4		51.1		49.2		-1.9		54.8		in	2011		39.5		in	1981
Month Average Temperature		56.8		59.1		56.7		+0.0		62.3		in	1990		49.6		in	1981
High Heat Index										78		in	1947
Low Wind Chill															25		in	1974
Heating Degree Days		5		6		12		-7		29		in	1974		0		in	2021
Month Heating DD		165		132		166		-1		308		in	1981		67		in	2021
Season Heating DD		203		190		246		-43		456		in	1956		92		in	2021
Cooling Degree Days		0		0		0		+0		4		in	1947		0		in	2024
Month Cooling DD		0		13		6		-6		48		in	1954		0		in	2024
Year Cooling DD		692		721		609		+83		868		in	2020		290		in	1902
Maximum Dew Point		55		61		51		+4		67		in	2011		21		in	1974
Minimum Dew Point		48		52		39		+9		54		in	1994		13		in	1952
Average  Dew Point		52		57		45		+7		59		in	2007		19		in	1974
Month Avg Max Dew Point		53.8		57.8		55.2		-1.4		60.5		in	2007		44.2		in	1981
Month Avg Min Dew Point		42.6		48.8		43.3		-0.7		51.6		in	2021		31.5		in	1981
Month Average Dew Point		48.5		53.6		49.2		-0.7		55.9		in	2021		37.8		in	1981
Precipitation		.00		.03		.13		-.13		3.31		in	1996
One Hour Rain		.00		.03						.82		in	2012
Half Hour Rain		.00		.03						.78		in	2012
Hourly Rain Rate		.00		.12						6.86		in	2012
Month Precipitation		.73		.51		2.79		-2.06		8.13		in	2005		.01		in	1963
Year Precipitation		44.51		42.61		36.00		+8.51		51.27		in	1998		19.78		in	1957
Snow												in
Snow Depth										T		in	1972
Month Snow										0.7		in	1979
Season Snow										0.7		in	1979
		October 20, 2024								Record					Record
Observed Daily Data		2024		2023		Norm		Depart		Highest					Lowest
Maximum Humidity		95%		98%		90%		+5%		100%		in	2012		61%		in	1974
Minimum Humidity		50%		89%		55%		-5%		94%		in	1996		21%		in	1990
Average Humidity		73%		94%		72%		+0%		97%		in	1996		50%		in	1991
Maximum Barometer		30.38		30.05		30.13		+00.25		30.64		in	1971		29.70		in	1966
Minimum Barometer		30.16		29.47		29.86		+00.30		30.47		in	1970		29.05		in	1927
Average Barometer		30.27		29.76		29.99		+00.28		30.55		in	1970		29.49		in	2006
Average Wind		5.4		7.0		6.9		-1.5		16.2		in	1961		2.6		in	1962
Direction		SSW		SE		SW				N					S
High Wind Gust		18		19		25		-7		46		in	1960		12		in	1953
Direction		SSW		SE		SSW				SSW					SW
Maximum Water Temp		61.3		61.7		60.6		+0.7		63.9		in	2021		56.7		in	2010
Minimum Water Temp		60.3		61.0		59.1		+1.2		62.5		in	2016		55.0		in	2009
Average Water Temp		60.8		61.4		59.9		+0.9		63.0		in	2007		55.9		in	2009
Sunrise/ AM Twilight		7:03:22 AM						6:35:19 AM
Sunset / PM Twilight		5:55:29 PM						6:24:36 PM
Length Of Day		10:52:07
Special Conditions		None
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