Climate and monthly weather forecast
Cornwell, PA

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Weather in January

January, like December, in Cornwell, Pennsylvania, is another cold winter month, with an average temperature ranging between max 37.4°F (3°C) and min 25.2°F (-3.8°C). January, known for its average high temperature of 37.4°F (3°C) and an average low temperature of 25.2°F (-3.8°C), is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Cornwell, Pennsylvania, with an average temperature varying between 41°F (5°C) and 27.5°F (-2.5°C). Cornwell experiences a recorded average high-temperature of a still cold 41°F (5°C) in February, closely aligned with January's 37.4°F (3°C). Weather in February »

Weather in March

March, the first month of the spring in Cornwell, is a frosty month, with an average temperature fluctuating between 49.3°F (9.6°C) and 34.5°F (1.4°C). As March begins, there's a slight increase in the average high-temperature, moving from a cold 41°F (5°C) in February to a chilly 49.3°F (9.6°C). Weather in March »

Weather in April

April is an enjoyable spring month in Cornwell, Pennsylvania, with an average temperature varying between 61.7°F (16.5°C) and 44.2°F (6.8°C). April brings a rise in Cornwell's average high-temperature, moving from a chilly 49.3°F (9.6°C) in March to an enjoyable 61.7°F (16.5°C). Weather in April »

Weather in May

May, the last month of the spring in Cornwell, is a pleasant month, with an average temperature fluctuating between 54.5°F (12.5°C) and 71.8°F (22.1°C). With the onset of May, Cornwell's average high-temperature sees a rise, moving from April's comfortable 61.7°F (16.5°C) to a pleasant 71.8°F (22.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Cornwell, Pennsylvania, with an average temperature ranging between min 62.8°F (17.1°C) and max 80.2°F (26.8°C). With the onset of June, Cornwell's average high-temperature sees a modest rise, moving from May's agreeable 71.8°F (22.1°C) to a warm 80.2°F (26.8°C). Weather in June »

Weather in July

July in Cornwell, Pennsylvania, is a hot summer month, with an average temperature varying between 86.4°F (30.2°C) and 68.9°F (20.5°C). July is the month when Cornwell, Pennsylvania, experiences its warmest temperatures, averaging a high of 86.4°F (30.2°C) and a low of 68.9°F (20.5°C). For July, the heat index is evaluated at a fiery hot 96.8°F (36°C). Weather in July »

Weather in August

August, the last month of the summer in Cornwell, is also a moderately hot month, with an average temperature fluctuating between 84.2°F (29°C) and 67.6°F (19.8°C). The average high-temperature during August is a warm 84.2°F (29°C), almost matching the conditions of the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Cornwell, is still a warm month, with temperature in the range of an average low of 60.3°F (15.7°C) and an average high of 77°F (25°C). The arrival of September is marked by a minor reduction in average high-temperature, sliding from 84.2°F (29°C) in August to a still moderately hot 77°F (25°C). Weather in September »

Weather in October

October, like September, in Cornwell, Pennsylvania, is another comfortable autumn month, with an average temperature ranging between max 64.9°F (18.3°C) and min 50.2°F (10.1°C). In the transition to October, Cornwell observes a drop in the average high-temperature, moving from a moderately hot 77°F (25°C) in September to an enjoyable 64.9°F (18.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Cornwell, is also a fresh month, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 38.8°F (3.8°C). Cornwell in November undergoes a mild reduction in the average high-temperature, shifting from October's comfortable 64.9°F (18.3°C) to a fresh 52.7°F (11.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Cornwell, Pennsylvania, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 32.5°F (0.3°C). The start of December signals a decrease in the average high-temperature, transitioning from a cool 52.7°F (11.5°C) in November to a frosty 43.7°F (6.5°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Cornwell?

The coldest month is January, with an average high-temperature of 37.4°F (3°C) and an average low-temperature of 25.2°F (-3.8°C).

What is the driest month in Cornwell?

The month with the least rainfall is January, when the rain falls for 7.9 days and typically collects 1.89" (48mm) of precipitation.

How much does it rain in Cornwell?

In Cornwell, during the entire year, the rain falls for 153.8 days and collects up to 30.94" (786mm) of precipitation.

When does it snow in Cornwell?

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

How many days does it snow in Cornwell?

In Cornwell, Pennsylvania, during the entire year, snow falls for 16.8 days and aggregates up to 8.5" (216mm) of snow.

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

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

What are the most humid months in Cornwell?

February and October, with an average relative humidity of 77%, are most humid months.

What is the month with the least sunshine in Cornwell?

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

When does it snow the most in Cornwell?

The month with the most snowfall in Cornwell is March, when snow falls for 3.3 days and typically aggregates up to 2.76" (70mm) of snow.

When is Daylight Saving Time (DST) in Cornwell?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 Cornwell?

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

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

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

When it does not snow in Cornwell?

In Cornwell, Pennsylvania, snow does not fall in June through October.

When are the longest days in Cornwell?

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

What is the warmest month in Cornwell?

With average high and low temperatures of 86.4°F (30.2°C) and 68.9°F (20.5°C) respectively, July is Cornwell's warmest month.

What is the wettest month in Cornwell?

The month with the most rainfall is July, when the rain falls for 18.5 days and typically aggregates up to 3.39" (86mm) of precipitation.

What month has the most sunshine in Cornwell?

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

What is the month with the shortest days in Cornwell?

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

Average temperature
Cornwell, PA

Average temperature - Cornwell, PA

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure
Cornwell, PA

Average pressure - Cornwell, PA

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Cornwell, PA

Average wind speed - Cornwell, PA

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity
Cornwell, PA

Average humidity - Cornwell, PA

The months with the highest relative humidity are February and October (77%).
The months with the lowest relative humidity are April, July and August (71%).

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Average rainfall
Cornwell, PA

Average rainfall - Cornwell, PA

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").

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Average rainfall days
Cornwell, PA

Average rainfall days - Cornwell, PA

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall
Cornwell, PA

Average snowfall - Cornwell, PA

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Cornwell, PA

Average snowfall days - Cornwell, PA

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Cornwell, PA

Average daylight / Average sunshine - Cornwell, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days
Cornwell, PA

Average sunshine days - Cornwell, PA

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (10.4 days).

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Average UV index
Cornwell, PA

Average UV index - Cornwell, 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
Cornwell, PA

Average visibility - Cornwell, 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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Cornwell, Pennsylvania, USA

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