Climate and monthly weather forecast
Summerville, PA

Weather in January

January, the same as December, in Summerville, Pennsylvania, is another subzero cold winter month, with an average temperature fluctuating between 17.8°F (-7.9°C) and 30.2°F (-1°C). With an average high-temperature of 30.2°F (-1°C) and an average low-temperature of 17.8°F (-7.9°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Summerville, is a wintry month, with an average temperature varying between 19.8°F (-6.8°C) and 34°F (1.1°C). In February, the average high-temperature is almost the same as in January - a wintry 34°F (1.1°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Summerville, Pennsylvania, with an average temperature ranging between min 27.9°F (-2.3°C) and max 43.5°F (6.4°C). In Summerville, the average high-temperature in March increases from a wintry 34°F (1.1°C) in February to a chilly 43.5°F (6.4°C). Weather in March »

Weather in April

April in Summerville, Pennsylvania, is a moderate spring month, with an average temperature varying between 56.3°F (13.5°C) and 37.6°F (3.1°C). In Summerville, the average high-temperature in April rises from a frosty 43.5°F (6.4°C) in March to a mild 56.3°F (13.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Summerville, Pennsylvania, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 68.5°F (20.3°C). In May, the average high-temperature increases from a mild 56.3°F (13.5°C) in April to a pleasant 68.5°F (20.3°C). Weather in May »

Weather in June

June, the first month of the summer in Summerville, is a warm month, with temperature in the range of an average high of 75.6°F (24.2°C) and an average low of 54.5°F (12.5°C). In June, the average high-temperature slightly increases from a pleasant 68.5°F (20.3°C) in May to a moderately hot 75.6°F (24.2°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Summerville, Pennsylvania, with an average temperature ranging between max 80.6°F (27°C) and min 58.8°F (14.9°C). The warmest month is July, with an average high-temperature of 80.6°F (27°C) and an average low-temperature of 58.8°F (14.9°C). The average heat index in July is computed to be a hot 86°F (30°C). Weather in July »

Weather in August

August, the last month of the summer in Summerville, is also a moderately hot month, with an average temperature varying between 56.7°F (13.7°C) and 78.6°F (25.9°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 78.6°F (25.9°C). Weather in August »

Weather in September

September, the first month of the autumn in Summerville, is still a pleasant month, with an average temperature ranging between max 72.1°F (22.3°C) and min 52.2°F (11.2°C). In Summerville, Pennsylvania, the average high-temperature in September marginally drops from a moderately hot 78.6°F (25.9°C) in August to an agreeable 72.1°F (22.3°C). Weather in September »

Weather in October

October, the same as September, in Summerville, Pennsylvania, is a moderate autumn month, with an average temperature ranging between min 43.3°F (6.3°C) and max 58.6°F (14.8°C). In October, the average high-temperature decreases from a pleasant 72.1°F (22.3°C) in September to a mild 58.6°F (14.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Summerville, is also a frosty month, with an average temperature fluctuating between 45.7°F (7.6°C) and 32°F (0°C). In November, the average high-temperature decreases from a mild 58.6°F (14.8°C) in October to a frosty 45.7°F (7.6°C). Weather in November »

Weather in December

December, the first month of the winter in Summerville, is also a wintry month, with an average temperature fluctuating between 36.5°F (2.5°C) and 25.5°F (-3.6°C). In December, the average high-temperature decreases from a frosty 45.7°F (7.6°C) in November to a wintry 36.5°F (2.5°C). Weather in December »
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FAQ

What is the coldest month in Summerville?

January is the coldest month in Summerville, Pennsylvania, with an average high-temperature of 30.2°F (-1°C) and an average low-temperature of 17.8°F (-7.9°C).

How many days does it rain in Summerville?

Throughout the year, there are 150.5 rainfall days, and 22.05" (560mm) of precipitation is accumulated.

When does it snow in Summerville?

Months with snowfall in Summerville, Pennsylvania, are January through May, October through December.

How much does it snow in Summerville?

Throughout the year, in Summerville, there are 72.4 snowfall days, and 22.28" (566mm) of snow is accumulated.

What is the month with the least sunshine in Summerville?

The month with the least sunshine in Summerville, Pennsylvania, is January, with an average of 2.5h of sunshine.

What is the most humid month in Summerville?

With an average relative humidity of 88%, February is the most humid month in Summerville.

What is the snowiest month in Summerville?

February is the month with the most snowfall in Summerville, Pennsylvania. Snow falls for 15.8 days and accumulates 5.51" (140mm) of snow.

When is Daylight Saving Time (DST) in Summerville?

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

The month with the most rainfall is April, when the rain falls for 16.1 days and typically aggregates up to 2.56" (65mm) of precipitation.

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

The months with the highest UV index in Summerville, Pennsylvania, are May through August, with an average maximum UV index of 5.

What is the least humid month in Summerville?

The months with the lowest humidity in Summerville are June through August, with an average relative humidity of 78%.

When it does not snow in Summerville?

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

When are the longest days in Summerville?

With an average of 15h and 5min of daylight, June has the longest days of the year in Summerville.

What is the warmest month in Summerville?

July is the warmest month, with an average high-temperature of 80.6°F (27°C) and an average low-temperature of 58.8°F (14.9°C).

What are the months with the most sunshine in Summerville?

The months with the most sunshine in Summerville are July and August, with an average of 9.7h of sunshine.

What is the driest month in Summerville?

The month with the least rainfall in Summerville is November, when the rain falls for 8.5 days and typically collects 1.26" (32mm) of precipitation.

What is the month with the shortest days in Summerville?

With an average of 9h and 16min of daylight, December has the shortest days of the year in Summerville.

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

With an average maximum UV index of 1, December is the month with the lowest UV index.

Average temperature
Summerville, PA

Average temperature - Summerville, PA

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.2°F).

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

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Average pressure
Summerville, PA

Average pressure - Summerville, 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
Summerville, PA

Average wind speed - Summerville, PA

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity
Summerville, PA

Average humidity - Summerville, PA

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).

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Average rainfall
Summerville, PA

Average rainfall - Summerville, PA

The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is November (1.26").

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Average rainfall days
Summerville, PA

Average rainfall days - Summerville, PA

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).

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Average snowfall
Summerville, PA

Average snowfall - Summerville, PA

The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Summerville, PA

Average snowfall days - Summerville, PA

The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Summerville, PA

Average daylight / Average sunshine - Summerville, PA

The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 16min).

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

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Average sunshine days
Summerville, PA

Average sunshine days - Summerville, PA

The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.1 days).

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