July weather forecast
New Castle, IN

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Weather in July

The mercury continues to climb in July, making it the hottest month in New Castle with peak temperatures touching 81°F (27.2°C) and plummeting only to 64.4°F (18°C) in the cooler nights. Despite the heat, there is an outburst of life and color. The splash of cool water in pools and the thematic summer street fares make up for the heatwave. Even though it's the warmest month, life in New Castle stays exciting and vibrant in July.

Temperature

July, with its average high-temperature of 81°F (27.2°C) and an average low-temperature of 64.4°F (18°C), holds the record as the warmest month.

Heat index

The heat index for July is calculated to be a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
Consider that heat index readings are for situations in the shade and light wind. 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 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. 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. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

In New Castle, the average relative humidity in July is 82%.

Rainfall

In New Castle, during July, the rain falls for 17.9 days and regularly aggregates up to 2.87" (73mm) of precipitation. In New Castle, during the entire year, the rain falls for 169.4 days and collects up to 31.77" (807mm) of precipitation.

Snowfall

May through September are months without snowfall in New Castle.

Daylight

The average length of the day in July in New Castle is 14h and 40min.
On the first day of July in New Castle, sunrise is at 6:17 am and sunset at 9:14 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 8:55 pm EDT.

Sunshine

In New Castle, the average sunshine in July is 10h.

UV index

May through July, with an average maximum UV index of 6, are months with the highest UV index in New Castle. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In July, an average UV index of 6 transforms into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months in New Castle?

New Castle's temperatures peak on average in July, reaching 81°F (27.2°C) at their highest and 64.4°F (18°C) at their lowest.

What is the average July temperature in New Castle?

The high-temperature, in July, in New Castle, records 81°F (27.2°C), while the low-temperature is 64.4°F (18°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in July is calculated to be 86°F (30°C).

What is the average humidity in July in New Castle?

The average relative humidity in July is 82%.

How many days does it rain in July in New Castle?

In New Castle, Indiana, in July, during 17.9 rainfall days, 2.87" (73mm) of precipitation is typically accumulated.

When it does not snow in New Castle?

May through September are months without snowfall in New Castle.

How many hours of daylight does New Castle have in July?

The average day length in July in New Castle is 14h and 40min.

When are sunrise and sunset in July in New Castle?

On the first day of July, sunrise is at 6:17 am and sunset at 9:14 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 8:55 pm EDT.

How long on average sun shines in July in New Castle?

In July, the average sunshine duration in New Castle is 10h.

What is the month with the highest UV index in New Castle?

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 New Castle?

In New Castle, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to 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
New Castle, IN

Average temperature in July - New Castle, IN
  • Average high temperature in July: 81°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32.2°F).

  • Average low temperature in July: 64.4°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in July
New Castle, IN

Average pressure in July - New Castle, IN
  • Average pressure in July: 29.97"Hg

The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in July
New Castle, IN

Average wind speed in July - New Castle, IN
  • Average wind speed in July: 6mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in July
New Castle, IN

Average humidity in July - New Castle, IN
  • Average humidity in July: 82%

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in July
New Castle, IN

Average rainfall in July - New Castle, IN
  • Average rainfall in July: 2.87"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is February (1.85").

Average rainfall days in July
New Castle, IN

Average rainfall days in July - New Castle, IN
  • Average rainfall days in July: 17.9 days

The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (8.8 days).

Average snowfall in July
New Castle, IN

Average snowfall in July - New Castle, IN
  • Average snowfall in July: 0"

The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
New Castle, IN

Average snowfall days in July - New Castle, IN
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
New Castle, IN

Average daylight in July / Average sunshine in July - New Castle, IN
  • 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 0min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in July
New Castle, IN

Average sunshine days in July - New Castle, IN
  • Average sunshine days in July: 9.8 days

The months with the most sunshine days are October and November (16.1 days).
The month with the least sunshine days is May (9.1 days).

Average UV index in July
New Castle, IN

Average UV index in July - New Castle, IN
  • Average UV index in July: 6

The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in July
New Castle, IN

Average cloud cover in July - New Castle, IN
  • Average cloud cover in July: 33

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in July
New Castle, IN

Average visibility in July - New Castle, IN
  • Average visibility in July: 5mi

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

New Castle, Indiana, USA

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