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, known for its average high temperature of 83.8°F (28.8°C) and an average low temperature of 63.5°F (17.5°C), is the warmest month.

Heat index

In July, the average heat index is appraised at a tropical 91.4°F (33°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

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

Rainfall

The month with the most rainfall is July, when the rain falls for 15.7 days and typically aggregates up to 3.03" (77mm) of precipitation.

Snowfall

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

Daylight

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

Sunshine

July has the most sunshine of the year, with an average of 10.4h of sunshine.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 6 during July leads to these advisories:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.

Frequently asked questions

What are the warmest months?

Allentown's July weather, marked by an average high temperature of 83.8°F (28.8°C) and an average low temperature of 63.5°F (17.5°C), is the warmest in the year.

How hot is July?

In Allentown, 83.8°F (28.8°C) is the average high-temperature and 63.5°F (17.5°C) is the average low-temperature during July. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in July is appraised at 91.4°F (33°C).

What are the least humid months?

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

What is the average humidity in July?

The average relative humidity in July is 76%.

What is the rainiest month?

The month with the most rainfall is July, when the rain falls for 15.7 days and typically aggregates up to 3.03" (77mm) of precipitation.

How much does it rain in July?

In Allentown, Pennsylvania, during July, the rain falls for 15.7 days and regularly aggregates up to 3.03" (77mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

What is the average length of the day in July?

The average day length in July is 14h and 44min.

When is the sunrise / sunset in July?

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, sunrise is at 5:58 am and sunset at 8:17 pm EDT.

What month has the most sunshine?

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

How many hours of sunshine does Allentown have in July?

In July, the average sunshine duration is 10.4h.

What is the month with the highest UV index?

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

What is the UV index reading in July?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Allentown, Pennsylvania, USA

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