July weather forecast
Allentown, PA

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An aerial panorama of the vast city of Allentown in Pennsylvania
An aerial panorama of the vast city of Allentown in Pennsylvania

Weather in July

July in Allentown is typically recognized for its soaring temperatures. It is the hottest month, with temperature extremes at 63.5°F (17.5°C) to 83.8°F (28.8°C). Residents and tourists maximize their outdoor fun, with the weather supporting a variety of activities including boating, hiking, and nature walks. Despite occasional summer showers, the extended sunshine hours ensure plenty of time to enjoy the great outdoors. Sunscreen and hats become essential items due to higher ultraviolet radiation levels.

Temperature

July is the warmest month, exhibiting average temperatures of 83.8°F (28.8°C) at the peak and 63.5°F (17.5°C) at the base.

Heat index

July's heat index is calculated to be a tropical 91.4°F (33°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

April and July, with an average relative humidity of 76%, are the least humid months.

Rainfall

July is the month with the most rainfall. Rain falls for 15.7 days and accumulates 3.03" (77mm) of precipitation.

Snowfall

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

Daylight

In Allentown, the average length of the day in July is 14h and 44min.
On the first day of the month, sunrise is at 5:35 am and sunset at 8:36 pm. On the last day of July, sunrise is at 5:58 am and sunset at 8:17 pm EDT.

Sunshine

With an average of 10.4h of sunshine, July has the most sunshine of the year in Allentown.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index in Allentown. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In July, a regular UV index of 6 translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What part of the year is the hottest in Allentown?

July, recognised by an average high temperature of 83.8°F (28.8°C) and a low of 63.5°F (17.5°C), is Allentown's warmest month.

How hot does it get in Allentown in July?

Allentown in July has an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 63.5°F (17.5°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 91.4°F (33°C).

What is the least humid month in Allentown?

April and July, with an average relative humidity of 76%, are the least humid months in Allentown.

What is the average humidity in July in Allentown?

In Allentown, the average relative humidity in July is 76%.

What is the rainiest month in Allentown?

July is the month with the most rainfall in Allentown. Rain falls for 15.7 days and accumulates 3.03" (77mm) of precipitation.

How much does it rain in Allentown in July?

In Allentown, in July, during 15.7 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When it does not snow in Allentown?

June through September are months without snowfall.

What is the average length of the day in July in Allentown?

In July, the average day length is 14h and 44min.

What time are sunrise and sunset in July in Allentown?

In July, on the first day of the month, sunrise is at 5:35 am and sunset at 8:36 pm. On the last day of the month, in Allentown, sunrise is at 5:58 am and sunset at 8:17 pm EDT.

What month has the most sunshine in Allentown?

With an average of 10.4h of sunshine, July has the most sunshine of the year in Allentown.

How long on average sun shines in July in Allentown?

In Allentown, Pennsylvania, the average sunshine duration in July is 10.4h.

What are the months with the highest UV index in Allentown?

The months with the highest UV index in Allentown are June and July, with an average maximum UV index of 6.

What is the UV index reading in July in Allentown?

In Allentown, Pennsylvania, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Allentown, PA

Average temperature in July - Allentown, PA
  • Average high temperature in July: 83.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in July: 63.5°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in July
Allentown, PA

Average pressure in July - Allentown, PA
  • Average pressure in July: 29.96"Hg

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 in July
Allentown, PA

Average wind speed in July - Allentown, PA
  • Average wind speed in July: 5.1mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in July
Allentown, PA

Average humidity in July - Allentown, PA
  • Average humidity in July: 76%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in July
Allentown, PA

Average rainfall in July - Allentown, PA
  • Average rainfall in July: 3.03"

The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in July
Allentown, PA

Average rainfall days in July - Allentown, PA
  • Average rainfall days in July: 15.7 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in July
Allentown, PA

Average snowfall in July - Allentown, PA
  • Average snowfall in July: 0"

The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Allentown, PA

Average snowfall days in July - Allentown, PA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Allentown, PA

Average daylight in July / Average sunshine in July - Allentown, PA
  • Average daylight in July: 14h and 4min

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 18min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in July
Allentown, PA

Average sunshine days in July - Allentown, PA
  • Average sunshine days in July: 13.4 days

The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in July
Allentown, PA

Average UV index in July - Allentown, PA
  • Average UV index in July: 6

The months with the highest UV index are June and July (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 cloud cover in July
Allentown, PA

Average cloud cover in July - Allentown, PA
  • Average cloud cover in July: 34

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in July
Allentown, PA

Average visibility in July - Allentown, PA
  • Average visibility in July: 6mi

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

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Allentown, Pennsylvania, USA

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