Climate and monthly weather forecast
Exton, PA

Weather in January

January, like December, in Exton, Pennsylvania, is another cold winter month, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 36.1°F (2.3°C). The coldest month is January, with an average high-temperature of 36.1°F (2.3°C) and an average low-temperature of 24.3°F (-4.3°C). Weather in January »

Weather in February

February, the last month of the winter in Exton, is another cold month, with an average temperature varying between 26.4°F (-3.1°C) and 39.7°F (4.3°C). In February, the average high-temperature is essentially the same as in January - a still cold 39.7°F (4.3°C). Weather in February »

Weather in March

March, the first month of the spring in Exton, is a chilly month, with an average temperature ranging between max 48.2°F (9°C) and min 33.4°F (0.8°C). In March, the average high-temperature slightly increases from a cold 39.7°F (4.3°C) in February to a chilly 48.2°F (9°C). Weather in March »

Weather in April

April is a moderate spring month in Exton, Pennsylvania, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 43.5°F (6.4°C). In April, the average high-temperature increases from a frosty 48.2°F (9°C) in March to a moderate 60.6°F (15.9°C). Weather in April »

Weather in May

May, the last month of the spring in Exton, is a pleasant month, with an average temperature varying between 53.6°F (12°C) and 71.1°F (21.7°C). In May, the average high-temperature rises from a moderate 60.6°F (15.9°C) in April to a pleasant 71.1°F (21.7°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Exton, Pennsylvania, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 61.5°F (16.4°C). In Exton, the average high-temperature in June marginally rises from a pleasant 71.1°F (21.7°C) in May to a warm 79°F (26.1°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Exton, Pennsylvania, with an average temperature ranging between min 67.5°F (19.7°C) and max 84.9°F (29.4°C). With an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 67.5°F (19.7°C), July is the warmest month. The average heat index in July is appraised at a hot 93.2°F (34°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Exton, Pennsylvania, with an average temperature varying between 65.8°F (18.8°C) and 82.4°F (28°C). In Exton, the average high-temperature in August is almost the same as in July - a still warm 82.4°F (28°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Exton, Pennsylvania, with an average temperature ranging between max 75.7°F (24.3°C) and min 59.2°F (15.1°C). In September, the average high-temperature marginally drops from a warm 82.4°F (28°C) in August to a still moderately hot 75.7°F (24.3°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Exton, Pennsylvania, with an average temperature fluctuating between 48.9°F (9.4°C) and 63.5°F (17.5°C). In Exton, the average high-temperature in October decreases from a moderately hot 75.7°F (24.3°C) in September to a comfortable 63.5°F (17.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Exton, Pennsylvania, with an average temperature ranging between min 37.4°F (3°C) and max 51.4°F (10.8°C). In November, the average high-temperature drops from a comfortable 63.5°F (17.5°C) in October to a cool 51.4°F (10.8°C). Weather in November »

Weather in December

December, the first month of the winter in Exton, is still a cold month, with an average temperature fluctuating between 42.3°F (5.7°C) and 31.1°F (-0.5°C). In December, the average high-temperature decreases from a cool 51.4°F (10.8°C) in November to a wintry 42.3°F (5.7°C). Weather in December »
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FAQ

What is the coldest month in Exton?

The coldest month is January, with an average high-temperature of 36.1°F (2.3°C) and an average low-temperature of 24.3°F (-4.3°C).

What is the driest month in Exton?

The month with the least rainfall is January, when the rain falls for 5 days and typically collects 0.79" (20mm) of precipitation.

How much does it rain in Exton?

In Exton, Pennsylvania, during the entire year, the rain falls for 124.6 days and collects up to 14.25" (362mm) of precipitation.

When does it snow in Exton?

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

How much does it snow in Exton?

Throughout the year, in Exton, there are 18.5 snowfall days, and 5.51" (140mm) of snow is accumulated.

What is the month with the lowest UV index in Exton?

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

What are the most humid months in Exton?

February and October, with an average relative humidity of 79%, are most humid months in Exton, Pennsylvania.

What is the month with the least sunshine in Exton?

With an average of 4.5h of sunshine, February has the least sunshine of the year.

What is the snowiest month in Exton?

The month with the most snowfall in Exton is March, when snow falls for 4.5 days and typically aggregates up to 1.57" (40mm) of snow.

When is Daylight Saving Time (DST) in Exton?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Exton, 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 Exton?

The months with the lowest humidity are April and July, with an average relative humidity of 73%.

What are the months with the highest UV index in Exton?

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 Exton?

In Exton, snow does not fall in June through October.

When are the longest days in Exton?

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

What is the warmest month in Exton?

July is the warmest month in Exton, with an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 67.5°F (19.7°C).

What month has the most sunshine in Exton?

July has the most sunshine of the year, with an average of 10.5h of sunshine.

What is the wettest month in Exton?

August is the month with the most rainfall in Exton, Pennsylvania. Rain falls for 14.4 days and accumulates 1.89" (48mm) of precipitation.

What is the month with the shortest days in Exton?

December has the shortest days of the year in Exton, Pennsylvania, with an average of 9h and 23min of daylight.

Average temperature
Exton, PA

Average temperature - Exton, 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 (36.1°F).

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure
Exton, PA

Average pressure - Exton, 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
Exton, PA

Average wind speed - Exton, PA

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity
Exton, PA

Average humidity - Exton, PA

The months with the highest relative humidity are February and October (79%).
The months with the lowest relative humidity are April and July (73%).

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Average rainfall
Exton, PA

Average rainfall - Exton, PA

The wettest month (with the highest rainfall) is August (1.89").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days
Exton, PA

Average rainfall days - Exton, PA

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (5 days).

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Average snowfall
Exton, PA

Average snowfall - Exton, PA

The month with the highest snowfall is March (1.57").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Exton, PA

Average snowfall days - Exton, PA

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Exton, PA

Average daylight / Average sunshine - Exton, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days
Exton, PA

Average sunshine days - Exton, PA

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is June (13.3 days).

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Average UV index
Exton, PA

Average UV index - Exton, 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
Exton, PA

Average visibility - Exton, 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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