Climate and monthly weather forecast
West Chester, PA

A cool summer day over the colorful cityscape of West Chester, Pennsylvania
A cool summer day over the colorful cityscape of West Chester, Pennsylvania

Weather in January

January, like December, in West Chester, Pennsylvania, is another cold winter month, with an average temperature varying between 24.4°F (-4.2°C) and 36.5°F (2.5°C). January is the coldest month, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 24.4°F (-4.2°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in West Chester, Pennsylvania, with an average temperature varying between 39.9°F (4.4°C) and 26.8°F (-2.9°C). In February, the average high-temperature is essentially the same as in January - a still wintry 39.9°F (4.4°C). Weather in February »

Weather in March

March, the first month of the spring in West Chester, is a frosty month, with an average temperature ranging between max 48.4°F (9.1°C) and min 33.4°F (0.8°C). In March, the average high-temperature marginally rises from a cold 39.9°F (4.4°C) in February to a chilly 48.4°F (9.1°C). Weather in March »

Weather in April

April in West Chester, Pennsylvania, is a comfortable spring month, with an average temperature varying between 43.9°F (6.6°C) and 61°F (16.1°C). In West Chester, Pennsylvania, the average high-temperature in April rises from a chilly 48.4°F (9.1°C) in March to an enjoyable 61°F (16.1°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in West Chester, Pennsylvania, with an average temperature varying between 54°F (12.2°C) and 71.2°F (21.8°C). In May, the average high-temperature rises from an enjoyable 61°F (16.1°C) in April to a pleasant 71.2°F (21.8°C). Weather in May »

Weather in June

June, the first month of the summer in West Chester, is a warm month, with an average temperature varying between 61.9°F (16.6°C) and 79°F (26.1°C). In June, the average high-temperature marginally rises from a pleasant 71.2°F (21.8°C) in May to a warm 79°F (26.1°C). Weather in June »

Weather in July

July, like June, in West Chester, Pennsylvania, is a moderately hot summer month, with an average temperature varying between 84.9°F (29.4°C) and 67.1°F (19.5°C). With an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 67.1°F (19.5°C), July is the warmest month. In July, the average heat index is computed to be a torrid 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in West Chester, is another warm month, with an average temperature varying between 65.7°F (18.7°C) and 82.4°F (28°C). In August, the average high-temperature is almost the same as in July - a still moderately hot 82.4°F (28°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in West Chester, Pennsylvania, with an average temperature fluctuating between 75.7°F (24.3°C) and 59.2°F (15.1°C). In September, the average high-temperature slightly decreases from a moderately hot 82.4°F (28°C) in August to a still warm 75.7°F (24.3°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in West Chester, Pennsylvania, with an average temperature ranging between max 63.5°F (17.5°C) and min 49.1°F (9.5°C). In October, the average high-temperature decreases from a moderately hot 75.7°F (24.3°C) in September to an enjoyable 63.5°F (17.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in West Chester, Pennsylvania, with temperature in the range of an average high of 52°F (11.1°C) and an average low of 37.8°F (3.2°C). In November, the average high-temperature decreases from a comfortable 63.5°F (17.5°C) in October to a cool 52°F (11.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in West Chester, Pennsylvania, with temperature in the range of an average high of 42.8°F (6°C) and an average low of 31.3°F (-0.4°C). In West Chester, the average high-temperature in December drops from a fresh 52°F (11.1°C) in November to a chilly 42.8°F (6°C). Weather in December »
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FAQ

What is the coldest month in West Chester?

The coldest month in West Chester is January, with an average high-temperature of 36.5°F (2.5°C) and an average low-temperature of 24.4°F (-4.2°C).

What is the driest month in West Chester?

The month with the least rainfall is January, when the rain falls for 5.7 days and typically collects 0.83" (21mm) of precipitation.

How many days does it rain in West Chester?

Throughout the year, in West Chester, there are 128.5 rainfall days, and 14.92" (379mm) of precipitation is accumulated.

When does it snow in West Chester?

Months with snowfall in West Chester, Pennsylvania, are January through May, November and December.

How much does it snow in West Chester?

In West Chester, during the entire year, snow falls for 18.1 days and aggregates up to 5.43" (138mm) of snow.

What is the month with the lowest UV index in West Chester?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What are the most humid months in West Chester?

The months with the highest humidity are February and October, with an average relative humidity of 79%.

What is the month with the least sunshine in West Chester?

The month with the least sunshine in West Chester is February, with an average of 4.6h of sunshine.

What is the snowiest month in West Chester?

March is the month with the most snowfall in West Chester. 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 13. 2022, at 2:00 am, Daylight Saving Time starts in West Chester, Pennsylvania, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in West Chester?

With an average relative humidity of 73%, April is the least humid month.

What are the months with the highest UV index in West Chester?

The months with the highest UV index in West Chester, Pennsylvania, are May through August, with an average maximum UV index of 6.

When it does not snow in West Chester?

June through October are months without snowfall in West Chester.

When are the longest days in West Chester?

The month with the longest days is June, with an average of 14h and 58min of daylight.

What is the warmest month in West Chester?

July is the warmest month, with an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 67.1°F (19.5°C).

What month has the most sunshine in West Chester?

With an average of 10.6h of sunshine, July has the most sunshine of the year in West Chester, Pennsylvania.

What is the rainiest month in West Chester?

The month with the most rainfall is August, when the rain falls for 14.6 days and typically aggregates up to 2.01" (51mm) of precipitation.

What is the month with the shortest days in West Chester?

With an average of 9h and 23min of daylight, December has the shortest days of the year in West Chester, Pennsylvania.

Average temperature
West Chester, PA

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).

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Average pressure
West Chester, PA

Average pressure - West Chester, PA

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
West Chester, PA

Average wind speed - West Chester, PA

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).

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Average humidity
West Chester, PA

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%).

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Average rainfall
West Chester, PA

Average rainfall - West Chester, PA

The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days
West Chester, PA

Average rainfall days - West Chester, PA

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).

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Average snowfall
West Chester, PA

Average snowfall - West Chester, PA

The month with the highest snowfall is March (1.54").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
West Chester, PA

Average snowfall days - West Chester, PA

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).

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Average daylight / Average sunshine
West Chester, PA

Average daylight / Average sunshine - West Chester, PA

The month with the longest days is June (Average daylight: 14h and 58min).
The month with the shortest days is December (Average daylight: 9h and 23min).

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).

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Average sunshine days
West Chester, PA

Average sunshine days - West Chester, PA

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is August (13.1 days).

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Average UV index
West Chester, PA

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).

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Average visibility
West Chester, PA

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).

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