Allentown
Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Allentown, PA

An aerial view of the vast city of Allentown in Pennsylvania, on a hot, sunny day, with the partly cloudy sky and a far view of a clear horizon line
An aerial view of the vast city of Allentown in Pennsylvania, on a hot, sunny day, with the partly cloudy sky and a far view of a clear horizon line
July, like June, in Allentown, Pennsylvania, is a moderately hot summer month, with average temperature varying between 62.8°F (17.1°C) and 84.2°F (29°C).

Temperature

July is the warmest month, with an average high-temperature of 84.2°F (29°C) and an average low-temperature of 62.8°F (17.1°C).

Heat index

In July, the average heat index is appraised at a tropical 90.5°F (32.5°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like metabolic differences, clothing, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Allentown, the average relative humidity in July is 68.8%.

Rainfall

July is the month with the most rainfall. Rain falls for 10.9 days and accumulates 4.9" (125.7mm) of precipitation.

Snowfall

In Allentown snow does not fall in May through October.

Daylight

In July, the average length of the day in Allentown is 14.7h.

Sunshine

June and July, with an average of 9h of sunshine, are months with the most sunshine in Allentown.

UV index

June and July, with an average maximum UV index of 9, are months with the highest UV index in Allentown, Pennsylvania. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to the UV radiation for the average person.
Note: In July, the average maximum UV index of 9 translate into the following recommendations:
Take extra precautions. Protection against sun damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Protect yourself by liberally applying a sunscreen of at least 30 SPF. Sunscreen prevents sunburn and decreases the damaging effects of Sun's radiation on the immune system.

What is the warmest month in Allentown?

With an average high-temperature of 84.2°F (29°C) and an average low-temperature of 62.8°F (17.1°C), July is the warmest month in Allentown, Pennsylvania.

What is the temperature in July in Allentown?

In Allentown, Pennsylvania, in July, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 62.8°F (17.1°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), that combines air temperature and relative humidity, is estimated at 90.5°F (32.5°C).

What is the average humidity in July in Allentown?

In Allentown, the average relative humidity in July is 68.8%.

How many days does it rain in July in Allentown?

In July, in Allentown, the rain falls for 10.9 days. Throughout July, 4.9" (125.7mm) of precipitation is accumulated.

What is the rainiest month in Allentown?

The month with the most rainfall is July when the rain falls for 10.9 days and typically aggregates up to 4.9" (125.7mm) of precipitation.

When it does not snow in Allentown?

May through October are months without snowfall in Allentown, Pennsylvania.

How many hours of daylight does Allentown have in July?

The average length of the day in July is 14.7h.

What is the month with the most sunshine in Allentown?

Months with the most sunshine are June and July, with an average of 9h of sunshine.

How many hours of sunshine does Allentown have in July?

In Allentown, Pennsylvania, the average sunshine in July is 9h.

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

June and July, with an average maximum UV index of 9, are months with the highest UV index.

What is the UV index reading in July in Allentown?

The average daily maximum UV index in July is 9. A UV Index of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in July - Allentown, PA
  • Average high temperature in July: 84.2°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in July: 62.7°F

The month with the highest average low temperature is July (62.7°F).
The coldest month (with the lowest average low temperature) is January (19.5°F).

Average humidity in July - Allentown, PA
  • Average humidity in July: 68.8%

The month with the highest relative humidity is September (74%).
The month with the lowest relative humidity is April (60.9%).

Average rainfall in July - Allentown, PA
  • Average rainfall in July: 5"

The wettest month (with the highest rainfall) is July (5").
The driest month (with the lowest rainfall) is February (2.7").

Average rainfall days in July - Allentown, PA
  • Average rainfall days in July: 10.9 days

Months with the highest number of rainy days are April and May (12.1 days).
Months with the lowest number of rainy days are September and October (9.1 days).

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

The month with the highest snowfall is February (11.1").
Months with the lowest snowfall are May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is January (5.6 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July / Average sunshine in July - Allentown, PA
  • Average daylight in July: 14.7h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.3h).

  • Average sunshine in July: 9h

Months with most sunshine are June and July (Average sunshine: 9h).
Months with least sunshine are November and December (Average sunshine: 4).

Average UV index in July - Allentown, PA
  • Average UV index in July: 9

Months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).