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Contents
- The climate of West Chester
- The best time to visit West Chester
- The worst time to visit West Chester
- Spring weather in West Chester
- Summer weather in West Chester
- Autumn weather in West Chester
- Winter weather in West Chester
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
A cool summer day over the colorful cityscape of West Chester, Pennsylvania
The climate of West Chester
West Chester, Pennsylvania experiences a humid subtropical climate without a dry season, correlating to the Cfa categorization on the Köppen climate scale. The geographical placement of this location plays a significant part in shaping its overall weather conditions. A significant influence comes from the Atlantic ocean, resulting in moderate temperature swings throughout the year and consistent humidity.
Among the primary weather factors working in unison, the temperature, humidity, and rainfall present a dynamic interplay, creating varying weather conditions throughout the year. The temperature range expands from a low of 24.4°F (-4.2°C) in January to a high of 84.9°F (29.4°C) in July. Concurrently, the relative humidity ranges slightly higher during the cooler months, with a 79% peak in February, gradually reducing to 75% by summer. Notably, the rainfall maintains a fairly consistent rhythm, ranging from a minimum of 0.83" (21mm) in January to a maximum of 2.01" (51mm) in August.
Monthly weather variations portray a distinct pattern in West Chester. Unique characteristics include periods of minimal rainfall in winter and escalating precipitation during the middle months of the year. The summer months tend to have the highest temperatures combining with the peak in rainfall, while a consistently high humidity level presents a distinctive aspect of West Chester's climate.
Among the primary weather factors working in unison, the temperature, humidity, and rainfall present a dynamic interplay, creating varying weather conditions throughout the year. The temperature range expands from a low of 24.4°F (-4.2°C) in January to a high of 84.9°F (29.4°C) in July. Concurrently, the relative humidity ranges slightly higher during the cooler months, with a 79% peak in February, gradually reducing to 75% by summer. Notably, the rainfall maintains a fairly consistent rhythm, ranging from a minimum of 0.83" (21mm) in January to a maximum of 2.01" (51mm) in August.
Monthly weather variations portray a distinct pattern in West Chester. Unique characteristics include periods of minimal rainfall in winter and escalating precipitation during the middle months of the year. The summer months tend to have the highest temperatures combining with the peak in rainfall, while a consistently high humidity level presents a distinctive aspect of West Chester's climate.
The best time to visit West Chester
The ideal time to visit West Chester largely depends on visitor's tolerance for varying degrees of climate conditions. For those comfortable with moderate to high temperatures and humidity, the summer months from June to August offer the warmest conditions, with temperatures peaking at 84.9°F (29.4°C) in July. Additionally, these months also witness the maximum daylight hours, providing ample opportunity for outdoor activities. However, it's noteworthy that this period also sees high precipitation levels.
The worst time to visit West Chester
The colder months from December to February constitute the least favorable period to visit West Chester. Being the coldest season, temperatures can drop as low as 24.4°F (-4.2°C) in January. Combined with the higher relative humidity of 78% to 79%, the chill could be perceived as even more biting. In addition to this, daylight hours are significantly shorter than other months, limiting the time for outdoor exploration.
Spring weather in West Chester
Spring in West Chester stretches from March to May, with temperatures gradually increasing from 48.4°F (9.1°C) to 71.2°F (21.8°C). The humidity during this season stays within the comfortable range, between 73% in April and 78% in May. The rainfall averages around an inch or slightly higher per month, with upward of 9 to 14 rainy days. With an average visibility of 6 miles throughout the season, it's an excellent time for outdoor pursuits.
Summer weather in West Chester
The summer months in West Chester, extending from June to August, usually exhibit high temperatures and precipitation levels. Average high temperatures range from 79°F (26.1°C) to 84.9°F (29.4°C), while humidity levels maintain an average of 75% to 77%. Rainfall during these months sees an uptick, with the highest precipitation of 2.01" (51mm) recorded in August. Despite these conditions, ample sunshine and daylight hours contribute to the season's appeal.
Autumn weather in West Chester
Autumn in West Chester spans from September to November, characterized by gradually declining temperatures and rainfall. The dropping temperatures from 75.7°F (24.3°C) down to 52°F (11.1°C) make the outdoors more comfortable. Rainfall also recedes from 1.1" (28mm) in September to 0.91" (23mm) in November, coupled with a decrease in rainy days. The humidity remains relatively constant, promoting a pleasant atmosphere for visitors.
Winter weather in West Chester
Winter in West Chester, running from December through February, tends to be colder with shorter daylight hours and perceptibly lower temperatures. With the lowest temperature registering at around 24.4°F (-4.2°C) in January, it coincides with moderately high relative humidity, averaging between 76% in December to 79% in February. Additionally, the rainfall average remains below an inch, and the incidence of snow during this season culminates the unique beauty of a West Chester winter.
Weather in January
Transitioning from the last month of the year, January in West Chester, Pennsylvania ushers in the new calendar year with characteristically cold and frosty weather. The high chance of snowiest conditions, with an average accumulation of 1.34" (34mm), instills a sense of winter magic, leaving the landscape wonderfully blanketed in white. Weather in January »
Weather in February
February holds onto the winter chill of January, with temperatures remaining firmly on the cold side. Despite the cold, the shorter month sees a slight increase in daylight hours compared to the previous month, signalling the first steps towards spring. Weather in February »
Weather in March
March marks the onset of meteorological spring in West Chester, offering a hint of warmth and welcoming longer periods of daylight. The departure from winter becomes more pronounced as temperatures begin to rise, however, the memory of winter isn't immediately forgotten, with the presence of an average 1.54" (39mm) of snow. Weather in March »
Weather in April
April in West Chester, Pennsylvania, sees a noticeable upswing in temperature, pushing aside the frosty embrace of winter. The growing warmth, coupled with longer daylight hours, makes the city come alive after several months of winter dormancy. Weather in April »
Weather in May
May brings to West Chester genuine spring weather, with days becoming increasingly long and warm. This is the month where trees are in full leaf, flowers bloom profusely and the air is filled with the sweet scent of blossoming flora. Weather in May »
Weather in June
June heralds the start of summer in West Chester, celebrating the change of season with a fitting rise in temperature, extended daylight hours, and an increased visibility of 6 miles. Despite the heat and humidity, the charm of West Chester's old-world architecture, impressive gardens, and timeless natural beauty is on full display. Weather in June »
Weather in July
July is the peak of summer in West Chester, with temperatures reaching the highest point of the year - up to 84.9°F (29.4°C). The city sits under typically clear skies interspersed with fluffy white clouds; it is truly the epitome of a classic American summer here. Weather in July »
Weather in August
August in West Chester witnesses a slight dip in temperature from the previous month's zenith, yet it remains distinctly summer with a high of 82.4°F (28°C). This tapering off is a sentinel subtly announcing the nearing end of the summer season. Weather in August »
Weather in September
September arrives in West Chester, gently transitioning the city from the sizzle of summer to the coolness of fall. The weather in this month embodies the very essence of a city on the brink of change: the recorded average temperatures have a notable decrease, paving the way for an autumnal breeze. Weather in September »
Weather in October
October ushers in the full glory of fall weather in West Chester, Pennsylvania. The month offers plenty of visual treats, with rustic colors cloaking the cityscape, backdropped by clear azure skies. Temperatures cool down significantly, hinting at the impending chill of winter. Weather in October »
Weather in November
The crisp, vibrant weather of November in West Chester makes it a beautiful month. As fall deepens, the city dons multiple shades of earthy brown, blazing orange, and fiery red. The weather is marked by a pronounced chill, with the average high plummeting to 52°F (11.1°C), signalling the beginning of the cold season. Weather in November »
Weather in December
December, being the final month of the year, brings the winter season to West Chester, Pennsylvania, with temperatures dropping to a chilling 42.8°F (6°C). The cityscape transforms into a winter wonderland, with roofs and trees often donned in a fine layer of snow. Weather in December »
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
With an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 24.4°F (-4.2°C), January is the coldest month.
What is the driest month?
January is the month with the least rainfall. Rain falls for 5.7 days and accumulates 0.83" (21mm) of precipitation.
How much does it rain?
In West Chester, during the entire year, the rain falls for 128.5 days and collects up to 14.92" (379mm) of precipitation.
When does it snow?
Months with snowfall are January through May, November and December.
How much does it snow in West Chester?
Throughout the year, there are 18.1 snowfall days, and 5.43" (138mm) of snow is accumulated.
When is the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the most humid month?
February and October, with an average relative humidity of 79%, are most humid months.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.6h of sunshine.
When does it snow the most?
March is the month with the most snowfall. Snow falls for 4.1 days and accumulates 1.54" (39mm) of snow.
When is Daylight Saving Time (DST) in West Chester?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month?
The least humid month in West Chester is April, with an average relative humidity of 73%.
What are the months with the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When it does not snow?
In West Chester, snow does not fall in June through October.
When are the longest days?
With an average of 15h and 0min of daylight, June has the longest days of the year.
What month is the hottest?
July, with its high-temperature average of 84.9°F (29.4°C) and a low-temperature average of 67.1°F (19.5°C), is the warmest month in West Chester.
What month has the most sunshine?
With an average of 10.6h of sunshine, July has the most sunshine of the year.
What is the rainiest month?
August is the month with the most rainfall. Rain falls for 14.6 days and accumulates 2.01" (51mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
West Chester, PA
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.5°F).
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure
West Chester, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
West Chester, PA
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.4mph - Average wind speed in May:
6.6mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.7mph - Average wind speed in October:
7mph - Average wind speed in November:
7.5mph - Average wind speed in December:
8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
West Chester, PA
The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall
West Chester, PA
- Average rainfall in January:
0.83" - Average rainfall in February:
0.91" - Average rainfall in March:
1.14" - Average rainfall in April:
1.02" - Average rainfall in May:
1.46" - Average rainfall in June:
1.5"
- Average rainfall in July:
1.85" - Average rainfall in August:
2.01" - Average rainfall in September:
1.1" - Average rainfall in October:
1.02" - Average rainfall in November:
0.91" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days
West Chester, PA
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
9.7 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
14 days - Average rainfall days in June:
14.4 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
6.8 days - Average rainfall days in December:
8.3 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (5.7 days).
Average snowfall
West Chester, PA
- Average snowfall in January:
1.34" - Average snowfall in February:
1.5" - Average snowfall in March:
1.54" - Average snowfall in April:
0.12" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is March (1.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
West Chester, PA
- Average snowfall days in January:
5.5 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
2.5 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
West Chester, PA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
West Chester, PA
- Average sunshine days in January:
20.5 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
17.1 days - Average sunshine days in April:
16.1 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
13.5 days
- Average sunshine days in July:
13.2 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
17 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
21.7 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is August (13.1 days).
Average UV index
West Chester, PA
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
West Chester, PA
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
West Chester, PA
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
West Chester, Pennsylvania, USA
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