July weather forecast
Lancaster, PA

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The city of Lancaster, Pennsylvania, in a stunning early morning panorama
The city of Lancaster, Pennsylvania, in a stunning early morning panorama

Weather in July

At the heart of the summer season, July is the hottest month in Lancaster, Pennsylvania. Temperatures soar to an all-time high of 82.9°F (28.3°C) as warm winds continue to blow across the region. Rainfall is at its peak during July, enhancing the greenery of the city and bringing some respite from the heat. Activities that involve water, such as swimming and boating, are often enjoyed during this sultry time. Dressing in light, breathable clothing is advocated to stay comfortable during July.

Temperature

In Lancaster, the average temperatures in July are the highest, with a peak at 82.9°F (28.3°C) and a low of 64.8°F (18.2°C).

Heat index

For July, the heat index is evaluated at a hot 91.4°F (33°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. 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 essentially critical for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

In July, the average relative humidity is 79%.

Rainfall

In Lancaster, in July, it is raining for 16.7 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 153.4 rainfall days, and 28.27" (718mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Lancaster, the average length of the day in July is 14h and 41min.
On the first day of July, sunrise is at 5:40 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:19 pm EDT.

Sunshine

The month with the most sunshine is July, with an average of 10.4h of sunshine.

UV index

The months with the highest UV index are May through July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 during July translates into the following guidance:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

What part of the year is the hottest?

July registers as the month with the average highest temperatures, reaching 82.9°F (28.3°C) at its peak and 64.8°F (18.2°C) at the lowest.

How hot is July?

In Lancaster, in July, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 64.8°F (18.2°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is evaluated at 91.4°F (33°C).

What is the average humidity in July?

The average relative humidity in July is 79%.

How much does it rain in July?

In Lancaster, in July, it is raining for 16.7 days, with typically 2.83" (72mm) of accumulated precipitation.

When it does not snow?

In Lancaster, snow does not fall in May through October.

What is the average length of the day in July?

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

When are sunrise and sunset in July?

On the first day of July, sunrise is at 5:40 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:19 pm EDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.4h of sunshine.

How many hours of sunshine does Lancaster have in July?

The average sunshine duration in July is 10.4h.

What is the month with the highest UV index?

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

What is the UV index intensity in July?

In Lancaster, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health threat from 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
Lancaster, PA

Average temperature in July - Lancaster, PA
  • Average high temperature in July: 82.9°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in July: 64.8°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).

Average pressure in July
Lancaster, PA

Average pressure in July - Lancaster, PA
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in July
Lancaster, PA

Average wind speed in July - Lancaster, PA
  • Average wind speed in July: 5.2mph

The windiest month (with the highest average wind speed) is March (9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in July
Lancaster, PA

Average humidity in July - Lancaster, PA
  • Average humidity in July: 79%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in July
Lancaster, PA

Average rainfall in July - Lancaster, PA
  • Average rainfall in July: 2.83"

The wettest month (with the highest rainfall) is August (3.35").
The driest months (with the least rainfall) are February and September (1.89").

Average rainfall days in July
Lancaster, PA

Average rainfall days in July - Lancaster, PA
  • Average rainfall days in July: 16.7 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (8 days).

Average snowfall in July
Lancaster, PA

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

The month with the highest snowfall is March (3.66").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Lancaster, PA

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

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in July / Average sunshine in July - Lancaster, 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 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 30min).

Average sunshine days in July
Lancaster, PA

Average sunshine days in July - Lancaster, PA
  • Average sunshine days in July: 12.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in July
Lancaster, PA

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

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in July
Lancaster, PA

Average cloud cover in July - Lancaster, PA
  • Average cloud cover in July: 33

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in July
Lancaster, PA

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

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

Lancaster, Pennsylvania, USA

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