July weather forecast
Sewell, NJ

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Weather in July

July, like June, in Sewell, New Jersey, is a moderately hot summer month, with an average temperature fluctuating between 69.1°F (20.6°C) and 85.6°F (29.8°C).

Temperature

July is the month when Sewell's temperatures reach their peak, with averages of 85.6°F (29.8°C) and lows of 69.1°F (20.6°C).

Heat index

Throughout July, the heat index is calculated to be a sweltering 96.8°F (36°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In July, the average relative humidity is 74%.

Rainfall

In Sewell, New Jersey, during July, the rain falls for 13.2 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 113.4 rainfall days, and 9.25" (235mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Sewell, the average length of the day in July is 14h and 40min.
On the first day of the month, sunrise is at 5:36 am and sunset at 8:32 pm. On the last day of July, sunrise is at 5:59 am and sunset at 8:14 pm EDT.

Sunshine

With an average of 10.8h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index in Sewell are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, a regular UV index of 6 translates into these guidelines:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest?

Sewell's warmest month, July, generally records average temperatures ranging from a high of 85.6°F (29.8°C) to a low of 69.1°F (20.6°C).

Is it hot during July?

In Sewell, in July, the average high-temperature is 85.6°F (29.8°C), and the average low-temperature is 69.1°F (20.6°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 96.8°F (36°C).

What is the average humidity in July?

The average relative humidity in July is 74%.

How much does it rain in July?

In Sewell, in July, it is raining for 13.2 days, with typically 1.02" (26mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall in Sewell.

What is the average length of the day 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 8:32 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:14 pm EDT.

What month has the most sunshine?

The month with the most sunshine in Sewell, New Jersey, is July, with an average of 10.8h of sunshine.

How many hours of sunshine does Sewell have in July?

The average sunshine duration in July in Sewell is 10.8h.

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.

What is the UV index reading in July?

In Sewell, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Sewell, NJ

Average temperature in July - Sewell, NJ
  • 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 (37.9°F).

  • Average low temperature in July: 69.1°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in July
Sewell, NJ

Average pressure in July - Sewell, NJ
  • 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
Sewell, NJ

Average wind speed in July - Sewell, NJ
  • Average wind speed in July: 5.7mph

The windiest months (with the highest average wind speed) are March and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in July
Sewell, NJ

Average humidity in July - Sewell, NJ
  • Average humidity in July: 74%

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

Average rainfall in July
Sewell, NJ

Average rainfall in July - Sewell, NJ
  • Average rainfall in July: 1.02"

The wettest month (with the highest rainfall) is August (1.1").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in July
Sewell, NJ

Average rainfall days in July - Sewell, NJ
  • Average rainfall days in July: 13.2 days

The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is November (6.3 days).

Average snowfall in July
Sewell, NJ

Average snowfall in July - Sewell, NJ
  • Average snowfall in July: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Sewell, NJ

Average snowfall days in July - Sewell, NJ
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (3.5 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
Sewell, NJ

Average daylight in July / Average sunshine in July - Sewell, NJ
  • 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in July
Sewell, NJ

Average sunshine days in July - Sewell, NJ
  • Average sunshine days in July: 14.7 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.7 days).

Average UV index in July
Sewell, NJ

Average UV index in July - Sewell, NJ
  • 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
Sewell, NJ

Average cloud cover in July - Sewell, NJ
  • Average cloud cover in July: 29

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in July
Sewell, NJ

Average visibility in July - Sewell, NJ
  • 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).

Sewell, New Jersey, USA

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