WEST CHESTER, PENNSYLVANIA

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WEATHER

Monthly - Summary

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Monthly - All Data

Climate Summary

Daily Averages

Hourly Data

CURRENT CONDITIONS

Sunrise/Set

06:11 am

07:49 pm
Local Time
2:23 pm EDT
23 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °C ] °F

TEMPERATURE

Average Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		52.8		30.7		31.6		40.9		51.2		61.5		70.2		74.9		73.2		66.4		55.1		44.6		33.8

Average High Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		62.8		39		40.5		50.8		62.1		72.7		80.9		85.4		83.5		77.1		65.9		54.1		42.2

Average Low Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		42.8		22.2		22.6		30.8		40.2		50.3		59.5		64.4		62.9		55.7		44.3		35		25.5

Highest Recorded Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		105		73		78		87		96		98		101		105		104		101		97		84		78

Lowest Recorded Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-16		-16		-16		-3		10		27		35		45		38		13		19		11		-12

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		---		---		---		---		---		---		0.2		0.2		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		19.2		---		---		---		0.2		0.9		3.7		7.6		5.1		1.7		0.1		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		94.1		---		---		0.2		2.1		6.8		19.4		27.2		25.1		11.7		1.6		---		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		155.2		0.1		0.1		1.8		7.9		19.5		27.3		30.6		30.5		25.1		10.3		1.5		0.4

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		211.3		1.3		1.4		6.6		17.3		28.3		29.8		31		31		29.6		23.3		9.9		1.7

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		264.7		4.8		5.8		15.5		26.1		30.9		30		31		31		30		30.3		21.3		7.9

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		316.6		13.7		15.5		26.5		29.7		31		30		31		31		30		30.9		28.3		19

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		357.5		31		28		31		30		31		28.8		27.5		28.7		29.6		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		301		31		28		31		29.9		28.1		16.6		9.6		12.1		23.8		29.9		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		239.2		31		28		30.6		27.6		18.2		4.1		0.8		1.4		11.2		26.3		29.2		30.9

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		181.9		30.4		27.2		27.7		17.3		5.9		0.1		---		0.2		2.4		16.3		24.3		30

Average Number of Days Below 32F/0C

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		113.1		26.1		23.7		18.3		5.3		0.3		---		---		---		0.1		3		12.5		24

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		49.6		16.1		13.8		5.3		0.3		---		---		---		---		---		---		3.1		11

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14.3		6.8		4		0.6		---		---		---		---		---		---		---		---		2.9

Average Number of Days Below 0F/-17C

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.2		0.6		0.4		---		---		---		---		---		---		---		---		---		0.1

PRECIPITATION

Average Precipitation

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		46.8		3.5		3.3		3.8		3.7		4		4.3		4.5		4.6		4.1		3.6		3.6		3.7

Average Number of Days With Precipitation

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		125		10		9		11		12		12		11		11		11		9		9		10		10

Most Reported Precipitation in a Month

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		15.6		10		7.2		8.4		8.8		8.9		13.1		11.6		15.6		14.8		9.1		9		9.1

Least Reported Precipitation in a Month

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		0.5		0.5		0.5		0.8		0.2		0.5		0.6		0.8		0.4		---		0.4		0.3

Most Precipitation Reported in a Day

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.9		3.4		3.9		4.7		3		5.6		5.4		4.3		5.6		8.9		5.6		5.9		3.2

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		76.9		6.1		5.6		6.6		7		7.3		6.8		6.6		5.8		5.7		6.5		6.6		6.3

Avg. No. of Days w/Precip. Above 0.2in/5mm

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		78		7		6		7		7		8		7		7		7		5		5		6		6

Avg. # of Days w/Precip. Above 0.4in/10mm

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		33		3		2		3		3		3		3		3		3		3		2		2		3

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		33.8		2.5		2.2		2.5		3.1		3.4		2.9		3		2.4		3		3		2.7		3.1

Avg. No. of Days w/Precip. Above 1in/25mm

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		1		1		1		1		1		1		1		1		1		1		1		1

PRECIPITATION - RAIN

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		123.5		9.7		9.2		10.9		11.7		12		10.5		10.5		9.9		8.7		8.7		10.1		9.9

Most Rain Reported in a Day

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		7.1		2.4		1.9		2.8		2.2		2.6		4.6		4.2		5.3		7.1		2.7		5.9		3.1

Most Rain Reported in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		63.5		10		6		7.5		8.6		8.9		9.6		11.6		15.6		14.8		6.3		8.5		9.1

Least Rain Reported in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		29.9		0.5		0.7		1.5		0.8		0.2		0.5		0.9		0.8		0.7		---		0.5		0.3

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		27.7		7		8.6		4.6		0.9		---		---		---		---		---		0.1		1.2		5.3

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11.9		4.6		3.4		1		0.5		---		---		---		---		---		---		0.3		2.1

Most Snow Reported in a Month

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		44.2		23.5		44.2		36		13		---		---		---		---		---		2		14		37

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6.7		2.9		1.8		0.5		0.3		---		---		---		---		---		---		0.2		1

Avg. No. of Days w/Snow Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.7		1.1		0.8		0.2		0.1		---		---		---		---		---		---		0.1		0.4

Avg. No. of Days w/Snow Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.3		0.3		0.6		0.1		---		---		---		---		---		---		---		---		0.3

Avg. No. of Days w/Snowfall Above 10in/25cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		0.1		0.3		---		---		---		---		---		---		---		---		---		0.1

Avg. # of Days w/Snow Depth Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29.8		10.7		10.6		2.8		0.3		---		---		---		---		---		---		0.5		4.9

Avg. # of Days w/Snow Depth Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16.6		5.7		7		1.5		0.1		---		---		---		---		---		---		0.2		2.1

Avg. # of Days w/Snow Depth Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9.4		3.1		4.7		0.5		---		---		---		---		---		---		---		---		1.1

Avg. # of Days w/Snow Depth Above 10in/25cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3		0.7		2.1		---		---		---		---		---		---		---		---		---		0.2

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5608		1119		945		785		441		189		30		2		6		87		376		648		981

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		900		---		---		---		8		48		186		303		252		92		11		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3212		1		2		24		115		333		606		766		711		456		159		33		4

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.2		11.2		12.5		13.8		14.9		15.5		15.2		14.2		12.9		11.6		10.4		9.9

SOLAR RADIATION

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		1.9		2.8		3.6		4.4		5.2		5.5		5.6		4.9		4.1		3.1		2		1.6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.8		1.1		1.5		2		2.3		2.5		2.4		2.1		1.6		1.2		0.9		0.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		3.1		3.8		4.2		4.5		4.7		4.8		5		4.8		4.6		4.2		3.1		2.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4		3.1		3.9		4		4		4.5		4.7		4.9		4.6		4.4		4.2		3.1		2.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		1.9		2.8		3.6		4.4		5.2		5.5		5.6		4.9		4.1		3.1		2		1.6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.8		1.1		1.6		2		2.4		2.5		2.4		2.1		1.7		1.3		0.9		0.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		3.8		4.9		5.1		5.2		5.7		5.6		5.6		5.4		5.5		5.5		4.1		3.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.4		4		5.4		5.2		5.3		6.2		6.3		6.2		5.8		6		6		4.4		3.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		1.6		2.4		3.2		3.7		3.6		4.3		4.8		4.5		3.5		2.7		1.6		1.3

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.8		1		1.4		1.9		2.2		2.3		2.3		2		1.5		1		0.8		0.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.3		2.6		3.1		3.7		3.7		3.3		3.8		4.3		4.3		3.8		3.4		2.3		1.9

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.8		2.4		2.9		3.1		2.8		2.1		2.8		3.6		3.8		3.2		3.1		2		1.7

NEARBY - MAP

NEARBY - LIST

Chadds Ford, Pennsylvania (5 mi / 9 km)
Devault, Pennsylvania (9 mi / 15 km)
Bellefonte, Delaware (12 mi / 20 km)
Coatesville, Pennsylvania (12 mi / 19 km)
Valley Forge, Pennsylvania (12 mi / 20 km)

GEOBA.SE

West Chester, Pennsylvania