Climate and monthly weather forecast
Winterstown, PA

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Weather in January

January, like December, in Winterstown, Pennsylvania, is a wintry winter month, with an average temperature ranging between max 35.8°F (2.1°C) and min 23.4°F (-4.8°C). January tends to be the coldest month, with temperatures averaging a daily high of 35.8°F (2.1°C) and a low of 23.4°F (-4.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Winterstown, Pennsylvania, with temperature in the range of an average low of 25.2°F (-3.8°C) and an average high of 39.4°F (4.1°C). With February's arrival, Winterstown notes an average high-temperature of a still wintry 39.4°F (4.1°C), closely following the trend of the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Winterstown, is a chilly month, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 48.2°F (9°C). March brings a slight increase in the average high-temperature, progressing from a wintry 39.4°F (4.1°C) in February to a chilly 48.2°F (9°C). Weather in March »

Weather in April

April is a refreshing spring month in Winterstown, Pennsylvania, with an average temperature varying between 42.8°F (6°C) and 60.4°F (15.8°C). The shift into April brings an increase in the average high-temperature, moving from a chilly 48.2°F (9°C) in March to a refreshing 60.4°F (15.8°C). Weather in April »

Weather in May

May, the last month of the spring in Winterstown, is a pleasant month, with an average temperature fluctuating between 70.3°F (21.3°C) and 52.9°F (11.6°C). Winterstown's transition into May sees a rise in the average high-temperature, advancing from a refreshing 60.4°F (15.8°C) in April to an agreeable 70.3°F (21.3°C). Weather in May »

Weather in June

June, the first month of the summer in Winterstown, is a moderately hot month, with an average temperature ranging between max 77.9°F (25.5°C) and min 60.4°F (15.8°C). With the beginning of June, Winterstown's average high-temperature sees a minor increase, transitioning from a pleasant 70.3°F (21.3°C) in May to a moderately hot 77.9°F (25.5°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Winterstown, Pennsylvania, with an average temperature ranging between min 65.5°F (18.6°C) and max 83.5°F (28.6°C). In Winterstown, Pennsylvania, July records the highest average temperatures, peaking at 83.5°F (28.6°C) and reaching a low of 65.5°F (18.6°C). July's heat index is appraised at a tropical 91.4°F (33°C). Weather in July »

Weather in August

August, the last month of the summer in Winterstown, is another warm month, with an average temperature varying between 63.9°F (17.7°C) and 81°F (27.2°C). Winterstown marks the onset of August with an average high-temperature of a still moderately hot 81°F (27.2°C), a subtle shift from July's 83.5°F (28.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Winterstown, Pennsylvania, with an average temperature fluctuating between 75°F (23.9°C) and 57.2°F (14°C). Winterstown observes a small decrease in the average high-temperature with the arrival of September, falling from August's 81°F (27.2°C) to a still warm 75°F (23.9°C). Weather in September »

Weather in October

October, like September, in Winterstown, Pennsylvania, is another refreshing autumn month, with an average temperature ranging between min 47.5°F (8.6°C) and max 63.1°F (17.3°C). The arrival of October signals a shift in temperature, down from a warm 75°F (23.9°C) in September to an enjoyable 63.1°F (17.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Winterstown, Pennsylvania, with an average temperature ranging between max 50.9°F (10.5°C) and min 36.3°F (2.4°C). In Winterstown, the average high-temperature in November drops from a refreshing 63.1°F (17.3°C) in October to a fresh 50.9°F (10.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Winterstown, Pennsylvania, with an average temperature fluctuating between 41.9°F (5.5°C) and 30.4°F (-0.9°C). A moderate decline in the average high-temperature is seen during December, decreasing from a cool 50.9°F (10.5°C) in November to a cold 41.9°F (5.5°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Winterstown?

January, having an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 23.4°F (-4.8°C), is the coldest month.

How much does it rain in Winterstown?

Throughout the year, in Winterstown, there are 139.8 rainfall days, and 22.95" (583mm) of precipitation is accumulated.

When does it snow in Winterstown?

Months with snowfall are January through May, October through December.

How many days does it snow in Winterstown?

Throughout the year, in Winterstown, Pennsylvania, there are 18.4 snowfall days, and 9.13" (232mm) of snow is accumulated.

What are the months with the lowest UV index in Winterstown?

The months with the lowest UV index in Winterstown are January, February, November and December, with an average maximum UV index of 2.

What is the driest month in Winterstown?

The month with the least rainfall in Winterstown is February, when the rain falls for 6.7 days and typically collects 1.26" (32mm) of precipitation.

What is the month with the least sunshine in Winterstown?

With an average of 4.7h of sunshine, February has the least sunshine of the year.

What are the least humid months in Winterstown?

The months with the lowest humidity in Winterstown, Pennsylvania, are March, April and November, with an average relative humidity of 76%.

What is the snowiest month in Winterstown?

March is the month with the most snowfall in Winterstown, Pennsylvania. Snow falls for 4.5 days and accumulates 3.23" (82mm) of snow.

When is Daylight Saving Time (DST) in Winterstown?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Winterstown, Pennsylvania, 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 most humid month in Winterstown?

The most humid month is May, with an average relative humidity of 81%.

When is the highest UV index in Winterstown?

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

When it does not snow in Winterstown?

In Winterstown, snow does not fall in June through September.

When are the longest days in Winterstown?

June has the longest days of the year in Winterstown, with an average of 14h and 54min of daylight.

What month is the hottest in Winterstown?

July, with an average high of 83.5°F (28.6°C) and a low of 65.5°F (18.6°C), signifies the warmest month of the year in Winterstown, Pennsylvania.

What month has the most sunshine in Winterstown?

The month with the most sunshine is July, with an average of 10.6h of sunshine.

What is the wettest month in Winterstown?

The month with the most rainfall is August, when the rain falls for 15 days and typically aggregates up to 2.8" (71mm) of precipitation.

What is the month with the shortest days in Winterstown?

The month with the shortest days in Winterstown, Pennsylvania, is December, with an average of 9h and 24min of daylight.

Average temperature
Winterstown, PA

Average temperature - Winterstown, PA

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.8°F).

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure
Winterstown, PA

Average pressure - Winterstown, PA

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
Winterstown, PA

Average wind speed - Winterstown, PA

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity
Winterstown, PA

Average humidity - Winterstown, PA

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March, April and November (76%).

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Average rainfall
Winterstown, PA

Average rainfall - Winterstown, PA

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is February (1.26").

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Average rainfall days
Winterstown, PA

Average rainfall days - Winterstown, PA

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall
Winterstown, PA

Average snowfall - Winterstown, PA

The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Winterstown, PA

Average snowfall days - Winterstown, PA

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Winterstown, PA

Average daylight / Average sunshine - Winterstown, PA

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

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 42min).

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Average sunshine days
Winterstown, PA

Average sunshine days - Winterstown, PA

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is May (11.7 days).

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Average UV index
Winterstown, PA

Average UV index - Winterstown, 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, November and December (UV index 2).

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Average visibility
Winterstown, PA

Average visibility - Winterstown, 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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Winterstown, Pennsylvania, USA

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