Climate and monthly weather forecast
Exton, PA

Weather in January

January, the same as December, is another cold winter month in Exton, Pennsylvania, with an average temperature varying between 36.1°F (2.3°C) and 24.3°F (-4.3°C). January is the coldest month, 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

The last month of the winter, February, is also a wintry month in Exton, Pennsylvania, with an average temperature ranging between min 26.4°F (-3.1°C) and max 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

The first month of the spring, March, is a frosty month in Exton, Pennsylvania, with temperature in the range of an average high of 48.2°F (9°C) and an average low of 33.4°F (0.8°C). In Exton, the average high-temperature in March slightly increases from a cold 39.7°F (4.3°C) in February to a frosty 48.2°F (9°C). Weather in March »

Weather in April

April in Exton, Pennsylvania, is a mild spring month, with an average temperature fluctuating between 43.5°F (6.4°C) and 60.6°F (15.9°C). In April, the average high-temperature increases from a frosty 48.2°F (9°C) in March to a mild 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 ranging between min 53.6°F (12°C) and max 71.1°F (21.7°C). In May, the average high-temperature increases from a mild 60.6°F (15.9°C) in April to an agreeable 71.1°F (21.7°C). Weather in May »

Weather in June

June, the first month of the summer in Exton, is a warm month, 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 June, the average high-temperature slightly increases from a pleasant 71.1°F (21.7°C) in May to a moderately hot 79°F (26.1°C). Weather in June »

Weather in July

July, like June, in Exton, Pennsylvania, is another warm summer month, with an average temperature ranging between min 67.5°F (19.7°C) and max 84.9°F (29.4°C). The warmest month is July, with an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 67.5°F (19.7°C). In July, the average heat index is calculated to be a tropical 93.7°F (34.3°C). Weather in July »

Weather in August

August, the last month of the summer in Exton, is another warm month, with an average temperature fluctuating between 82.4°F (28°C) and 65.8°F (18.8°C). In Exton, the average high-temperature in August is practically 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 also a moderately hot month in Exton, Pennsylvania, with an average temperature varying between 59.2°F (15.1°C) and 75.7°F (24.3°C). In Exton, Pennsylvania, the average high-temperature in September slightly decreases 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 63.5°F (17.5°C) and 48.9°F (9.4°C). In October, the average high-temperature decreases from a warm 75.7°F (24.3°C) in September to an enjoyable 63.5°F (17.5°C). Weather in October »

Weather in November

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

Weather in December

December, the first month of the winter in Exton, is also a wintry month, with temperature in the range of an average high of 42.3°F (5.7°C) and an average low of 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 cold 42.3°F (5.7°C). Weather in December »
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FAQ

What is the coldest month in Exton?

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

What is the driest month in Exton?

January is the month with the least rainfall in Exton. Rain falls for 5 days and accumulates 0.79" (20mm) of precipitation.

How much does it rain in Exton?

In Exton, 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 many days 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 are the months with the lowest UV index in Exton?

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

What are the most humid months in Exton?

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

What is the month with the least sunshine in Exton?

The month with the least sunshine in Exton is February, with an average of 4.5h of sunshine.

When does it snow the most in Exton?

The month with the most snowfall 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, 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 are the least humid months in Exton?

April and July, with an average relative humidity of 73%, are the least humid months in Exton, Pennsylvania.

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

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

When it does not snow in Exton?

June through October are months without snowfall in Exton.

When are the longest days in Exton?

The month with the longest days in Exton 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, Pennsylvania, 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?

The month with the most sunshine in Exton is July, 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?

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

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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