July weather forecast
Greencastle, PA

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Weather in July

July, the same as June, is another warm summer month in Greencastle, Pennsylvania, with temperature in the range of an average low of 62.6°F (17°C) and an average high of 84.4°F (29.1°C).

Temperature

July stands out as Greencastle's warmest month, with temperatures ranging between an average high of 84.4°F (29.1°C) and a low of 62.6°F (17°C).

Heat index

For July, the heat index is evaluated at a tropical 93.2°F (34°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

The months with the lowest humidity are April and July, with an average relative humidity of 75%.

Rainfall

In Greencastle, in July, during 16.9 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, there are 161.8 rainfall days, and 28.07" (713mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In July, the average length of the day is 14h and 40min.
On the first day of July, sunrise is at 5:46 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:24 pm EDT.

Sunshine

With an average of 10.5h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index 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 the ordinary person.
Note: A daily high UV index of 6 in July leads to these guidelines:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

July brings the highest temperatures, with an average high of 84.4°F (29.1°C) and an average low of 62.6°F (17°C).

Is it hot during July?

In Greencastle, 84.4°F (29.1°C) is the average high-temperature and 62.6°F (17°C) is the average low-temperature during July. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in July is evaluated at 93.2°F (34°C).

What is the least humid month?

April and July, with an average relative humidity of 75%, are the least humid months.

What is the average humidity in July in Greencastle?

In July, the average relative humidity is 75%.

How many days does it rain in July?

In Greencastle, during July, the rain falls for 16.9 days and regularly aggregates up to 2.83" (72mm) of precipitation.

When it does not snow?

May through September are months without snowfall in Greencastle.

What is the average length of the day in July?

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

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:46 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:24 pm EDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.5h of sunshine.

How long on average sun shines in July?

In July, the average sunshine duration is 10.5h.

When is the highest UV index?

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

What is the UV index reading in July?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average max. wind speed
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
Greencastle, PA

Average temperature in July - Greencastle, PA
  • Average high temperature in July: 84.4°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in July: 62.6°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in July
Greencastle, PA

Average pressure in July - Greencastle, PA
  • Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in July
Greencastle, PA

Average wind speed in July - Greencastle, PA
  • Average wind speed in July: 4.5mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in July
Greencastle, PA

Average humidity in July - Greencastle, PA
  • Average humidity in July: 75%

The months with the highest relative humidity are February, May, October and December (79%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in July
Greencastle, PA

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

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in July
Greencastle, PA

Average rainfall days in July - Greencastle, PA
  • Average rainfall days in July: 16.9 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (9 days).

Average snowfall in July
Greencastle, PA

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

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Greencastle, PA

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

The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Greencastle, PA
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in July: 10h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in July
Greencastle, PA

Average sunshine days in July - Greencastle, PA
  • Average sunshine days in July: 12.2 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).

Average UV index in July
Greencastle, PA

Average UV index in July - Greencastle, 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
Greencastle, PA

Average cloud cover in July - Greencastle, PA
  • Average cloud cover in July: 32

The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in July
Greencastle, PA

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

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

Greencastle, Pennsylvania, USA

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