Climate and monthly weather forecast
Bryn Mawr, PA

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Weather in January

January, the same as December, is another cold winter month in Bryn Mawr, Pennsylvania, with temperature in the range of an average high of 36.7°F (2.6°C) and an average low of 25°F (-3.9°C). The lowest temperatures are recorded in January, with averages reaching a high of 36.7°F (2.6°C) and a low of 25°F (-3.9°C). Weather in January »

Weather in February

February, the last month of the winter in Bryn Mawr, is also a wintry month, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 40.3°F (4.6°C). At the start of February, Bryn Mawr's average high-temperature reaches a still cold 40.3°F (4.6°C), subtly different from the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Bryn Mawr, Pennsylvania, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 34.3°F (1.3°C). March sees a marginal temperature increase, moving from an icy 40.3°F (4.6°C) in February to a frosty 49.1°F (9.5°C). Weather in March »

Weather in April

April is an enjoyable spring month in Bryn Mawr, Pennsylvania, with an average temperature varying between 44.2°F (6.8°C) and 61.2°F (16.2°C). April's arrival brings a change in high-temperatures, moving from a frosty 49.1°F (9.5°C) in March to a refreshing 61.2°F (16.2°C). Weather in April »

Weather in May

May, the last month of the spring in Bryn Mawr, is a pleasant month, with an average temperature varying between 71.8°F (22.1°C) and 54.3°F (12.4°C). The arrival of May signals an increase in the average high-temperature, moving from an enjoyable 61.2°F (16.2°C) in April to an agreeable 71.8°F (22.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Bryn Mawr, Pennsylvania, with an average temperature varying between 79.9°F (26.6°C) and 62.6°F (17°C). The average high-temperature mildly increases in June, edging from an agreeable 71.8°F (22.1°C) in May to a moderately hot 79.9°F (26.6°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Bryn Mawr, Pennsylvania, with an average temperature fluctuating between 68.9°F (20.5°C) and 85.8°F (29.9°C). Temperature records mark July as the warmest month, with highs averaging 85.8°F (29.9°C) and lows at 68.9°F (20.5°C). During July, the heat index is evaluated at a fiery hot 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in Bryn Mawr, is another warm month, with an average temperature ranging between min 67.5°F (19.7°C) and max 83.7°F (28.7°C). The commencement of August brings an average high-temperature of a still moderately hot 83.7°F (28.7°C), marking an inconsequential divergence from July. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Bryn Mawr, Pennsylvania, with an average temperature fluctuating between 76.5°F (24.7°C) and 59.9°F (15.5°C). September signifies a minor drop in average high-temperature, transitioning from a moderately hot 83.7°F (28.7°C) in August to a still warm 76.5°F (24.7°C). Weather in September »

Weather in October

October, like September, in Bryn Mawr, Pennsylvania, is another comfortable autumn month, with an average temperature fluctuating between 50°F (10°C) and 64.2°F (17.9°C). October is characterized by a reduction in the average high-temperature, from a moderately hot 76.5°F (24.7°C) in September to a comfortable 64.2°F (17.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Bryn Mawr, is another cool month, with an average temperature varying between 38.3°F (3.5°C) and 52°F (11.1°C). With November's onset, the weather shows a temperature decrease, transitioning from a refreshing 64.2°F (17.9°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 Bryn Mawr, Pennsylvania, with temperature in the range of an average high of 43.2°F (6.2°C) and an average low of 32°F (0°C). A subtle change in temperatures is noted as November gives way to December, with average highs reducing from a cool 52°F (11.1°C) to a frosty 43.2°F (6.2°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Bryn Mawr?

Bryn Mawr, Pennsylvania, experiences its average lowest temperatures in January, reaching a peak of 36.7°F (2.6°C) and a minimum of 25°F (-3.9°C).

What is the driest month in Bryn Mawr?

January is the month with the least rainfall in Bryn Mawr, Pennsylvania. Rain falls for 5.3 days and accumulates 0.55" (14mm) of precipitation.

How many days does it rain in Bryn Mawr?

In Bryn Mawr, during the entire year, the rain falls for 111.8 days and collects up to 9.69" (246mm) of precipitation.

When does it snow in Bryn Mawr?

January through March, November and December are months with snowfall in Bryn Mawr, Pennsylvania.

How much does it snow in Bryn Mawr?

Throughout the year, in Bryn Mawr, there are 15.1 snowfall days, and 3.66" (93mm) of snow is accumulated.

What are the months with the lowest UV index in Bryn Mawr?

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

What are the most humid months in Bryn Mawr?

The months with the highest humidity in Bryn Mawr are February and October, with an average relative humidity of 78%.

When does it snow the most in Bryn Mawr?

The months with the most snowfall in Bryn Mawr, Pennsylvania, are February and March, with an average 0.98" (25mm) of accumulated snow.

What is the month with the least sunshine in Bryn Mawr?

With an average of 4.6h of sunshine, February has the least sunshine of the year in Bryn Mawr.

When is Daylight Saving Time (DST) in Bryn Mawr?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Bryn Mawr, 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 least humid month in Bryn Mawr?

April, July and August, with an average relative humidity of 71%, are the least humid months.

When it does not snow in Bryn Mawr?

In Bryn Mawr, snow does not fall in April through October.

What is the month with the highest UV index in Bryn Mawr?

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

When are the longest days in Bryn Mawr?

The month with the longest days is June, with an average of 15h and 0min of daylight.

What is the warmest month in Bryn Mawr?

July registers as the month with the average highest temperatures, reaching 85.8°F (29.9°C) at its peak and 68.9°F (20.5°C) at the lowest.

What is the rainiest month in Bryn Mawr?

The wettest months in Bryn Mawr, Pennsylvania, are July and August, with an average 1.14" (29mm) of rainfall.

What month has the most sunshine in Bryn Mawr?

The month with the most sunshine in Bryn Mawr, Pennsylvania, is July, with an average of 10.6h of sunshine.

What is the month with the shortest days in Bryn Mawr?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

Average pressure
Bryn Mawr, PA

Average pressure - Bryn Mawr, 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
Bryn Mawr, PA

Average wind speed - Bryn Mawr, 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 (5.5mph).

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Average humidity
Bryn Mawr, PA

Average humidity - Bryn Mawr, PA

The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).

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Average rainfall
Bryn Mawr, PA

Average rainfall - Bryn Mawr, PA

The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days
Bryn Mawr, PA

Average rainfall days - Bryn Mawr, PA

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall
Bryn Mawr, PA

Average snowfall - Bryn Mawr, PA

The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Bryn Mawr, PA

Average snowfall days - Bryn Mawr, PA

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Bryn Mawr, PA

Average daylight / Average sunshine - Bryn Mawr, PA

The month with the longest days is June (Average daylight: 15h and 0min).
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 36min).

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Average sunshine days
Bryn Mawr, PA

Average sunshine days - Bryn Mawr, PA

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).

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Average UV index
Bryn Mawr, PA

Average UV index - Bryn Mawr, 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
Bryn Mawr, PA

Average visibility - Bryn Mawr, PA

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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Bryn Mawr, Pennsylvania, USA

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