Climate and monthly weather forecast
Valley Forge, PA

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Weather in January

January, the same as December, is a wintry winter month in Valley Forge, Pennsylvania, with an average temperature varying between 23.9°F (-4.5°C) and 36°F (2.2°C). With an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.9°F (-4.5°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Valley Forge, is also an icy month, with an average temperature fluctuating between 39.6°F (4.2°C) and 26.1°F (-3.3°C). As Valley Forge welcomes February, the average high-temperature records at a still wintry 39.6°F (4.2°C), marking an insignificant deviation from the prior month. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Valley Forge, Pennsylvania, with an average temperature ranging between min 32.9°F (0.5°C) and max 48.4°F (9.1°C). The arrival of March signals a slight increase in the average high-temperature, moving from a cold 39.6°F (4.2°C) in February to a chilly 48.4°F (9.1°C). Weather in March »

Weather in April

April in Valley Forge, Pennsylvania, is a moderate spring month, with an average temperature varying between 43.2°F (6.2°C) and 60.6°F (15.9°C). April's onset witnesses a shift in the average high-temperature, moving from a chilly 48.4°F (9.1°C) in March to a refreshing 60.6°F (15.9°C). Weather in April »

Weather in May

May, the last month of the spring in Valley Forge, is an agreeable month, with an average temperature ranging between max 71.2°F (21.8°C) and min 53.1°F (11.7°C). The arrival of May brings an increase in high-temperatures, moving from a mild 60.6°F (15.9°C) in April to an agreeable 71.2°F (21.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Valley Forge, Pennsylvania, with an average temperature ranging between min 61°F (16.1°C) and max 79.2°F (26.2°C). Valley Forge's transition into June brings a slight rise in the average high-temperature, moving from an agreeable 71.2°F (21.8°C) in May to a warm 79.2°F (26.2°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Valley Forge, Pennsylvania, with an average temperature fluctuating between 66.7°F (19.3°C) and 85.1°F (29.5°C). The warmest temperatures occur during July, when averages reach a peak of 85.1°F (29.5°C) and a low of 66.7°F (19.3°C). In July, the heat index is estimated at a sweltering 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in Valley Forge, is also a moderately hot month, with an average temperature ranging between max 82.8°F (28.2°C) and min 65.5°F (18.6°C). With the onset of August, a modest change to a still moderately hot 82.8°F (28.2°C) from July's 85.1°F (29.5°C) is noted in high-temperature. Weather in August »

Weather in September

September, the first month of the autumn in Valley Forge, is still a warm month, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 58.6°F (14.8°C). The onset of September results in a small decrease in the average high-temperature, moderately receding from a moderately hot 82.8°F (28.2°C) in August to a still warm 75.7°F (24.3°C). Weather in September »

Weather in October

October, like September, in Valley Forge, Pennsylvania, is another enjoyable autumn month, with an average temperature varying between 63.5°F (17.5°C) and 48.4°F (9.1°C). The arrival of October indicates a decrease in the average high-temperature, moving 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

The last month of the autumn, November, is another cool month in Valley Forge, Pennsylvania, with an average temperature ranging between max 51.1°F (10.6°C) and min 37.6°F (3.1°C). The shift from October to November corresponds with a decrease in the average high-temperature, down to a cool 51.1°F (10.6°C) from an enjoyable 63.5°F (17.5°C). Weather in November »

Weather in December

December, the first month of the winter in Valley Forge, is also an icy month, with temperature in the range of an average high of 42.3°F (5.7°C) and an average low of 30.9°F (-0.6°C). Start of December brings a slight shift in the average high-temperature, dipping a bit from November's fresh 51.1°F (10.6°C) to a wintry 42.3°F (5.7°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Valley Forge?

With an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.9°F (-4.5°C), January is the coldest month in Valley Forge.

How much does it rain in Valley Forge?

Throughout the year, in Valley Forge, Pennsylvania, there are 132.3 rainfall days, and 13.98" (355mm) of precipitation is accumulated.

When does it snow in Valley Forge?

Months with snowfall in Valley Forge, Pennsylvania, are January through March, November and December.

What is the snowiest month in Valley Forge?

The months with the most snowfall in Valley Forge are January and February, with an average 0.59" (15mm) of accumulated snow.

How many days does it snow in Valley Forge?

In Valley Forge, during the entire year, snow falls for 15.1 days and aggregates up to 2.2" (56mm) of snow.

What are the months with the lowest UV index in Valley Forge?

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

What is the most humid month in Valley Forge?

February is the most humid month, with an average relative humidity of 80%.

What is the driest month in Valley Forge?

February is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.75" (19mm) of precipitation.

What is the month with the least sunshine in Valley Forge?

With an average of 4.6h of sunshine, February has the least sunshine of the year in Valley Forge, Pennsylvania.

When is Daylight Saving Time (DST) in Valley Forge?

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

The months with the lowest humidity are April and July, with an average relative humidity of 74%.

When it does not snow in Valley Forge?

April through October are months without snowfall in Valley Forge.

What are the months with the highest UV index in Valley Forge?

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

When are the longest days in Valley Forge?

June has the longest days of the year, with an average of 15h and 0min of daylight.

What are the warmest months in Valley Forge?

In Valley Forge, July is the warmest month, with temperatures averaging a high of 85.1°F (29.5°C) and a low of 66.7°F (19.3°C).

What month has the most sunshine in Valley Forge?

The month with the most sunshine in Valley Forge, Pennsylvania, is July, with an average of 10.5h of sunshine.

What is the rainiest month in Valley Forge?

August is the month with the most rainfall in Valley Forge, Pennsylvania. Rain falls for 13.5 days and accumulates 1.77" (45mm) of precipitation.

What is the month with the shortest days in Valley Forge?

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

Average temperature
Valley Forge, PA

Average temperature - Valley Forge, PA

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36°F).

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure
Valley Forge, PA

Average pressure - Valley Forge, 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
Valley Forge, PA

Average wind speed - Valley Forge, PA

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity
Valley Forge, PA

Average humidity - Valley Forge, PA

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are April and July (74%).

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Average rainfall
Valley Forge, PA

Average rainfall - Valley Forge, PA

The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days
Valley Forge, PA

Average rainfall days - Valley Forge, PA

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.9 days).

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Average snowfall
Valley Forge, PA

Average snowfall - Valley Forge, PA

The months with the highest snowfall are January and February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Valley Forge, PA

Average snowfall days - Valley Forge, PA

The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Valley Forge, PA

Average daylight / Average sunshine - Valley Forge, 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 36min).

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Average sunshine days
Valley Forge, PA

Average sunshine days - Valley Forge, PA

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is June (12.8 days).

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Average UV index
Valley Forge, PA

Average UV index - Valley Forge, 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
Valley Forge, PA

Average visibility - Valley Forge, 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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Valley Forge, Pennsylvania, USA

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