July weather forecast
Merchantville, NJ

Weather in July

July in Merchantville, New Jersey, is a hot summer month, with average temperature fluctuating between 69.4°F (20.8°C) and 86.5°F (30.3°C).

Temperature

July is the warmest month, with an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 69.4°F (20.8°C).

Heat index

The average heat index in July is computed to be a very hot 96.8°F (36°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like metabolic differences, differences in body mass, height, and shape, wind, and activity influence one's weather impression. 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in July is 71%.

Rainfall

In July, the rain falls for 14.4 days. Throughout July, 1.38" (35mm) of precipitation is accumulated. Throughout the year, there are 121.5 rainfall days, and 12.44" (316mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall in Merchantville, New Jersey.

Daylight

In July, the average length of the day is 14.7h.

Sunshine

With an average of 10.6h of sunshine, July has the most sunshine of the year.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Merchantville. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Merchantville?

With an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 69.4°F (20.8°C), July is the warmest month in Merchantville.

What is the temperature in July in Merchantville?

In Merchantville, New Jersey, in July, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 69.4°F (20.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in July is computed to be 96.8°F (36°C).

What is the average humidity in July in Merchantville?

In Merchantville, the average relative humidity in July is 71%.

How many days does it rain in July in Merchantville?

In Merchantville, New Jersey, in July, during 14.4 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

When it does not snow in Merchantville?

In Merchantville snow does not fall in June through October.

How many hours of daylight does Merchantville have in July?

The average length of the day in July in Merchantville is 14.7h.

What month has the most sunshine in Merchantville?

July has the most sunshine of the year in Merchantville, New Jersey, with an average of 10.6h of sunshine.

How long on average sun shines in July in Merchantville?

The average sunshine in July in Merchantville, New Jersey, is 10.6h.

What is the month with the highest UV index in Merchantville?

Months with the highest UV index in Merchantville, New Jersey, are May through August, with an average maximum UV index of 6.

What is the UV index intensity in July in Merchantville?

In Merchantville, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in July
Merchantville, NJ

Average temperature in July - Merchantville, NJ
  • Average high temperature in July: 86.5°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in July: 69.4°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

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Average pressure in July
Merchantville, NJ

Average pressure in July - Merchantville, NJ
  • Average pressure in July: 29.96"

The month with the highest atmospheric pressure is November (30.12").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in July
Merchantville, NJ

Average wind speed in July - Merchantville, NJ
  • Average wind speed in July: 5.8mph

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in July
Merchantville, NJ

Average humidity in July - Merchantville, NJ
  • Average humidity in July: 71%

The month with the highest relative humidity is October (77%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in July
Merchantville, NJ

Average rainfall in July - Merchantville, NJ
  • Average rainfall in July: 1.38"

The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in July
Merchantville, NJ

Average rainfall days in July - Merchantville, NJ
  • Average rainfall days in July: 14.4 days

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (6.6 days).

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Average snowfall in July
Merchantville, NJ

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

The month with the highest snowfall is February (0.79").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in July
Merchantville, NJ

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

The month with the highest number of snowfall days is January (3.6 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Merchantville, NJ

Average daylight in July / Average sunshine in July - Merchantville, NJ
  • Average daylight in July: 14.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in July: 10.6h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in July
Merchantville, NJ

Average sunshine days in July - Merchantville, NJ
  • Average sunshine days in July: 14 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (14 days).

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Average UV index in July
Merchantville, NJ

Average UV index in July - Merchantville, NJ
  • Average UV index in July: 6

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

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Average cloud cover in July
Merchantville, NJ

Average cloud cover in July - Merchantville, NJ
  • Average cloud cover in July: 32

The month with the most cloud cover is February (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in July
Merchantville, NJ

Average visibility in July - Merchantville, NJ
  • Average visibility in July: 6mi

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

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