July weather forecast
Old Tappan, NJ

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Weather in July

July, like June, in Old Tappan, New Jersey, is another warm summer month, with an average temperature fluctuating between 84.9°F (29.4°C) and 68°F (20°C).

Temperature

July, recording an average high temperature of 84.9°F (29.4°C) and a low temperature of 68°F (20°C), is Old Tappan's warmest month.

Heat index

July's heat index is computed to be a hot 93.2°F (34°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

In Old Tappan, the average relative humidity in July is 70%.

Rainfall

In July, the rain falls for 16.1 days. Throughout July, 2.68" (68mm) of precipitation is accumulated. Throughout the year, in Old Tappan, New Jersey, there are 153.9 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Old Tappan.

Daylight

The average length of the day in July is 14h and 47min.
On the first day of July, sunrise is at 5:27 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:12 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.3h of sunshine.

UV index

The months with the highest UV index in Old Tappan, New Jersey, are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 6 during July translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

What time of the year is the hottest in Old Tappan?

Old Tappan's July weather, marked by an average high temperature of 84.9°F (29.4°C) and an average low temperature of 68°F (20°C), is the warmest in the year.

Is it hot in Old Tappan during July?

The high-temperature during July is 84.9°F (29.4°C) and the low-temperature is 68°F (20°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 93.2°F (34°C).

What is the average humidity in July in Old Tappan?

In Old Tappan, the average relative humidity in July is 70%.

How much does it rain in Old Tappan in July?

In July, in Old Tappan, New Jersey, the rain falls for 16.1 days. Throughout July, 2.68" (68mm) of precipitation is accumulated.

When it does not snow in Old Tappan?

In Old Tappan, New Jersey, snow does not fall in May through October.

What is the average length of the day in July in Old Tappan?

In July, the average day length is 14h and 47min.

What time are sunrise and sunset in July in Old Tappan?

On the first day of July in Old Tappan, sunrise is at 5:27 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:12 pm EDT.

What month has the most sunshine in Old Tappan?

The month with the most sunshine is July, with an average of 10.3h of sunshine.

How long on average sun shines in July in Old Tappan?

The average sunshine duration in July is 10.3h.

What is the month with the highest UV index in Old Tappan?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Old Tappan.

What is the UV index intensity in July in Old Tappan?

In Old Tappan, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
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
Old Tappan, NJ

Average temperature in July - Old Tappan, NJ
  • Average high temperature in July: 84.9°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in July: 68°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

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Average pressure in July
Old Tappan, NJ

Average pressure in July - Old Tappan, NJ
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in July
Old Tappan, NJ

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

The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in July
Old Tappan, NJ

Average humidity in July - Old Tappan, NJ
  • Average humidity in July: 70%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (68%).

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Average rainfall in July
Old Tappan, NJ

Average rainfall in July - Old Tappan, NJ
  • Average rainfall in July: 2.68"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in July
Old Tappan, NJ

Average rainfall days in July - Old Tappan, NJ
  • Average rainfall days in July: 16.1 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in July
Old Tappan, NJ

Average snowfall in July - Old Tappan, NJ
  • Average snowfall in July: 0"

The month with the highest snowfall is March (3.07").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Old Tappan, NJ

Average snowfall days in July - Old Tappan, NJ
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Old Tappan, NJ

Average daylight in July / Average sunshine in July - Old Tappan, NJ
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in July
Old Tappan, NJ

Average sunshine days in July - Old Tappan, NJ
  • Average sunshine days in July: 13.1 days

The months with the most sunshine days are January and November (18.1 days).
The months with the least sunshine days are April and June (12.7 days).

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Average UV index in July
Old Tappan, NJ

Average UV index in July - Old Tappan, NJ
  • Average UV index in July: 6

The months with the highest UV index are June, July and August (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
Old Tappan, NJ

Average cloud cover in July - Old Tappan, NJ
  • Average cloud cover in July: 34

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in July
Old Tappan, NJ

Average visibility in July - Old Tappan, 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).

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Old Tappan, New Jersey, USA

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