July weather forecast
Mount Gretna, PA

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Weather in July

July, the same as June, is a moderately hot summer month in Mount Gretna, Pennsylvania, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 63.1°F (17.3°C).

Temperature

Mount Gretna's July weather reaches an average high of 82°F (27.8°C) and an average low of 63.1°F (17.3°C), making it the warmest month.

Heat index

July's heat index is calculated to be a tropical 87.8°F (31°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

The average relative humidity in July in Mount Gretna is 79%.

Rainfall

In Mount Gretna, in July, it is raining for 15.6 days, with typically 1.93" (49mm) of accumulated precipitation. In Mount Gretna, during the entire year, the rain falls for 137.4 days and collects up to 16.26" (413mm) of precipitation.

Snowfall

In Mount Gretna, Pennsylvania, snow does not fall in June through September.

Daylight

The average length of the day in July in Mount Gretna is 14h and 42min.
On the first day of the month, sunrise is at 5:40 am and sunset at 8:39 pm. On the last day of July, sunrise is at 6:03 am and sunset at 8:21 pm EDT.

Sunshine

With an average of 10.4h of sunshine, July has the most sunshine of the year in Mount Gretna.

UV index

The months with the highest UV index in Mount Gretna are May through July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum daily UV index of 6 during July morphs into the following directions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What is the warmest month in Mount Gretna?

With its average high temperature of 82°F (27.8°C) and a low of 63.1°F (17.3°C), July is regarded as the warmest month in Mount Gretna, Pennsylvania.

What is the usual temperature for Mount Gretna in July?

In Mount Gretna, 82°F (27.8°C) is the average high-temperature and 63.1°F (17.3°C) is the average low-temperature during July. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in July is calculated to be 87.8°F (31°C).

What is the average humidity in July in Mount Gretna?

The average relative humidity in July in Mount Gretna is 79%.

How many days does it rain in July in Mount Gretna?

In Mount Gretna, Pennsylvania, during July, the rain falls for 15.6 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow in Mount Gretna?

In Mount Gretna, Pennsylvania, snow does not fall in June through September.

How many hours of daylight does Mount Gretna have in July?

The average day length in July in Mount Gretna, Pennsylvania, is 14h and 42min.

When is the sunrise / sunset in July in Mount Gretna?

In July, on the first day of the month, sunrise is at 5:40 am and sunset at 8:39 pm. On the last day of the month, in Mount Gretna, sunrise is at 6:03 am and sunset at 8:21 pm EDT.

What month has the most sunshine in Mount Gretna?

The month with the most sunshine in Mount Gretna, Pennsylvania, is July, with an average of 10.4h of sunshine.

How long on average sun shines in July in Mount Gretna?

In July, the average sunshine duration is 10.4h.

What is the month with the highest UV index in Mount Gretna?

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

How high is the UV index in July in Mount Gretna?

In Mount Gretna, Pennsylvania, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Mount Gretna, PA

Average temperature in July - Mount Gretna, PA
  • Average high temperature in July: 82°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in July: 63.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in July
Mount Gretna, PA

Average pressure in July - Mount Gretna, 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).

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Average wind speed in July
Mount Gretna, PA

Average wind speed in July - Mount Gretna, PA
  • Average wind speed in July: 5mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in July
Mount Gretna, PA

Average humidity in July - Mount Gretna, PA
  • Average humidity in July: 79%

The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in July
Mount Gretna, PA

Average rainfall in July - Mount Gretna, PA
  • Average rainfall in July: 1.93"

The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").

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Average rainfall days in July
Mount Gretna, PA

Average rainfall days in July - Mount Gretna, PA
  • Average rainfall days in July: 15.6 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in July
Mount Gretna, PA

Average snowfall in July - Mount Gretna, PA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Mount Gretna, PA

Average snowfall days in July - Mount Gretna, PA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Mount Gretna, PA

Average daylight in July / Average sunshine in July - Mount Gretna, 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).

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Average sunshine days in July
Mount Gretna, PA

Average sunshine days in July - Mount Gretna, PA
  • Average sunshine days in July: 11.8 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in July
Mount Gretna, PA

Average UV index in July - Mount Gretna, 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, March, November and December (UV index 2).

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Average cloud cover in July
Mount Gretna, PA

Average cloud cover in July - Mount Gretna, PA
  • Average cloud cover in July: 32

The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in July
Mount Gretna, PA

Average visibility in July - Mount Gretna, PA
  • Average visibility in July: 6mi

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

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Mount Gretna, Pennsylvania, USA

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