July weather forecast
Swarthmore, PA

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Weather in July

July, the same as June, is a moderately hot summer month in Swarthmore, Pennsylvania, with an average temperature varying between 68.7°F (20.4°C) and 85.6°F (29.8°C).

Temperature

In Swarthmore, the average temperatures in July are the highest, with a peak at 85.6°F (29.8°C) and a low of 68.7°F (20.4°C).

Heat index

During July, the heat index is appraised at a very hot 95°F (35°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In Swarthmore, the average relative humidity in July is 73%.

Rainfall

In Swarthmore, in July, it is raining for 17 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 148.4 rainfall days, and 25.94" (659mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day is 14h and 40min.
On the first day of July in Swarthmore, Pennsylvania, sunrise is at 5:36 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:15 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.7h of sunshine.

UV index

The months with the highest UV index in Swarthmore are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In July, a regular UV index of 6 translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Frequently asked questions

What part of the year is the hottest?

During the warmest month in Swarthmore, July, temperatures average a high of 85.6°F (29.8°C) and a low of 68.7°F (20.4°C).

How hot does it get in July?

The high-temperature, in July, in Swarthmore, records 85.6°F (29.8°C), while the low-temperature is 68.7°F (20.4°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 95°F (35°C).

What is the average humidity in July?

In July, the average relative humidity is 73%.

How many days does it rain in July?

In Swarthmore, during July, the rain falls for 17 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow?

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

How many hours of daylight does Swarthmore have in July?

In July, the average day length is 14h and 40min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:36 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:15 pm EDT.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.7h of sunshine.

How many hours of sunshine does Swarthmore have in July?

In July, the average sunshine duration is 10.7h.

What are the months with the highest UV index?

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

How high is the UV index in July in Swarthmore?

The average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Swarthmore, PA

Average temperature in July - Swarthmore, PA
  • Average high temperature in July: 85.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in July: 68.7°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in July
Swarthmore, PA

Average pressure in July - Swarthmore, 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
Swarthmore, PA

Average wind speed in July - Swarthmore, PA
  • Average wind speed in July: 5.5mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in July
Swarthmore, PA

Average humidity in July - Swarthmore, PA
  • Average humidity in July: 73%

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

Average rainfall in July
Swarthmore, PA

Average rainfall in July - Swarthmore, PA
  • Average rainfall in July: 2.68"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.61").

Average rainfall days in July
Swarthmore, PA

Average rainfall days in July - Swarthmore, PA
  • Average rainfall days in July: 17 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in July
Swarthmore, PA

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

The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in July
Swarthmore, PA

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

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

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

Average daylight in July / Average sunshine in July - Swarthmore, 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 24min).

  • Average sunshine in July: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in July
Swarthmore, PA

Average sunshine days in July - Swarthmore, PA
  • Average sunshine days in July: 11.3 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in July
Swarthmore, PA

Average UV index in July - Swarthmore, 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).

Average cloud cover in July
Swarthmore, PA

Average cloud cover in July - Swarthmore, PA
  • Average cloud cover in July: 30

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in July
Swarthmore, PA

Average visibility in July - Swarthmore, 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).

Swarthmore, Pennsylvania, USA

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