July weather forecast
Philadelphia, PA

The George Washington statue in front of the Independence Hall in Philadelphia, Pennsylvania
The George Washington statue in front of the Independence Hall in Philadelphia, Pennsylvania

Weather in July

July in Philadelphia, Pennsylvania, is a hot summer month, with an average temperature fluctuating between 69.3°F (20.7°C) and 86.4°F (30.2°C).

Temperature

With an average high-temperature of 86.4°F (30.2°C) and an average low-temperature of 69.3°F (20.7°C), July is the warmest month.

Heat index

The average heat index in July is calculated to be a torrid 96.8°F (36°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With 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 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, metabolic differences, pregnancy, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In July, the average relative humidity is 72%.

Rainfall

In Philadelphia, in July, during 14.8 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, in Philadelphia, Pennsylvania, there are 127.8 rainfall days, and 13.82" (351mm) of precipitation is accumulated.

Snowfall

In Philadelphia, snow does not fall in June through October.

Ocean temperature

In Philadelphia, Pennsylvania, the average water temperature is 73.9°F (23.3°C).
Note: For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 73.9°F (23.3°C).

Daylight

The average length of the day in July is 14h and 41min.
On the first day of the month, sunrise is at 5:35 am and sunset at 8:33 pm. On the last day of July, sunrise is at 5:58 am and sunset at 8:15 pm EDT.

Sunshine

With an average of 10.6h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index in Philadelphia are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 6 in July interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
[Resources]

FAQ

What is the warmest month in Philadelphia?

July is the warmest month in Philadelphia, with an average high-temperature of 86.4°F (30.2°C) and an average low-temperature of 69.3°F (20.7°C).

What is the temperature in July in Philadelphia?

In July, the average high-temperature is 86.4°F (30.2°C), and the average low-temperature is 69.3°F (20.7°C). in July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 96.8°F (36°C).

What is the average humidity in July in Philadelphia?

The average relative humidity in July in Philadelphia is 72%.

How many days does it rain in July in Philadelphia?

In Philadelphia, Pennsylvania, in July, during 14.8 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

When it does not snow in Philadelphia?

June through October are months without snowfall.

What is the water temperature in July in Philadelphia?

In July, the average ocean temperature in Philadelphia is 73.9°F (23.3°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.9°F (23.3°C) water may be enjoyable.

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

The average day length in July in Philadelphia, Pennsylvania, is 14h and 41min.

When is the sunrise / sunset in July in Philadelphia?

In July, on the first day of the month, sunrise is at 5:35 am and sunset at 8:33 pm. On the last day of the month, in Philadelphia, Pennsylvania, sunrise is at 5:58 am and sunset at 8:15 pm EDT.

What month has the most sunshine in Philadelphia?

July has the most sunshine of the year in Philadelphia, with an average of 10.6h of sunshine.

How long on average sun shines in July in Philadelphia?

In July, the average sunshine duration is 10.6h.

When is the highest UV index in Philadelphia?

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

What is the UV index reading in July in Philadelphia?

The average daily maximum UV index in July in Philadelphia is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Philadelphia, PA

Average temperature in July - Philadelphia, PA
  • Average high temperature in July: 86.4°F

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).

  • Average low temperature in July: 69.3°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

[Resources]

Average pressure in July
Philadelphia, PA

Average pressure in July - Philadelphia, 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).

[Resources]

Average wind speed in July
Philadelphia, PA

Average wind speed in July - Philadelphia, PA
  • Average wind speed in July: 5.7mph

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).

[Resources]

Average humidity in July
Philadelphia, PA

Average humidity in July - Philadelphia, PA
  • Average humidity in July: 72%

The month with the highest relative humidity is October (77%).
The months with the lowest relative humidity are April and August (71%).

[Resources]

Average rainfall in July
Philadelphia, PA

Average rainfall in July - Philadelphia, PA
  • Average rainfall in July: 1.54"

The wettest month (with the highest rainfall) is August (1.65").
The driest months (with the least rainfall) are January and February (0.83").

[Resources]

Average rainfall days in July
Philadelphia, PA

Average rainfall days in July - Philadelphia, PA
  • Average rainfall days in July: 14.8 days

The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is February (7.2 days).

[Resources]

Average snowfall in July
Philadelphia, PA

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

The month with the highest snowfall is February (0.98").
The months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days in July
Philadelphia, PA

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

The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average sea temperature in July
Philadelphia, PA

Average sea temperature in July - Philadelphia, PA
  • Average sea temperature in July: 74°F

The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

[Resources]

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

Average daylight in July / Average sunshine in July - Philadelphia, PA
  • Average daylight in July: 14h and 41min

The month with the longest days is June (Average daylight: 14h and 58min).
The month with the shortest days is December (Average daylight: 9h and 23min).

  • Average sunshine in July: 10h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

[Resources]

Average sunshine days in July
Philadelphia, PA

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

The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is May (13.3 days).

[Resources]

Average UV index in July
Philadelphia, PA

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

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, November and December (UV index 2).

[Resources]

Average cloud cover in July
Philadelphia, PA

Average cloud cover in July - Philadelphia, PA
  • Average cloud cover in July: 31

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

[Resources]

Average visibility in July
Philadelphia, PA

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location