August weather forecast
River Vale, NJ

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Weather in August

August, the last month of the summer in River Vale, is another warm month, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 67.3°F (19.6°C).

Temperature

The beginning of August records an average high-temperature of a still warm 82.9°F (28.3°C), marking a negligible difference from July's 84.9°F (29.4°C). River Vale's nighttime temperature in August drops to an average of 67.3°F (19.6°C).

Heat index

In August, the heat index is appraised at a hot 87.8°F (31°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

August is the least humid month, with an average relative humidity of 68%.

Rainfall

In River Vale, in August, it is raining for 14.4 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, in River Vale, New Jersey, there are 153.9 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

In River Vale, snow does not fall in May through October.

Daylight

In August, the average length of the day in River Vale is 13h and 46min.
On the first day of the month, sunrise is at 5:52 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:29 pm EDT.

Sunshine

In River Vale, New Jersey, the average sunshine in August is 10.2h.

UV index

The months with the highest UV index in River Vale, New Jersey, are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 6 in August transforms into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

How hot is August in River Vale?

August temperatures in River Vale, New Jersey, vary between a high-temperature of 82.9°F (28.3°C) and a low-temperature of 67.3°F (19.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is appraised at 87.8°F (31°C).

What is the least humid month in River Vale?

The least humid month in River Vale is August, with an average relative humidity of 68%.

What is the average humidity in August in River Vale?

In August, the average relative humidity in River Vale, New Jersey, is 68%.

How many days does it rain in August in River Vale?

In River Vale, New Jersey, in August, during 14.4 rainfall days, 2.28" (58mm) of precipitation is typically accumulated.

When it does not snow in River Vale?

May through October are months without snowfall in River Vale.

What is the average length of the day in August in River Vale?

The average day length in August in River Vale, New Jersey, is 13h and 46min.

When is the sunrise / sunset in August in River Vale?

On the first day of August in River Vale, New Jersey, sunrise is at 5:52 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:29 pm EDT.

How many hours of sunshine does River Vale have in August?

In August, the average sunshine duration in River Vale is 10.2h.

What is the month with the highest UV index in River Vale?

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

What is the UV index intensity in August in River Vale?

The average daily maximum UV index in August is 6. A UV Index estimate 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 August
River Vale, NJ

Average temperature in August - River Vale, NJ
  • Average high temperature in August: 82.9°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 August: 67.3°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 August
River Vale, NJ

Average pressure in August - River Vale, NJ
  • Average pressure in August: 29.98"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 August
River Vale, NJ

Average wind speed in August - River Vale, NJ
  • Average wind speed in August: 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 August
River Vale, NJ

Average humidity in August - River Vale, NJ
  • Average humidity in August: 68%

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 August
River Vale, NJ

Average rainfall in August - River Vale, NJ
  • Average rainfall in August: 2.28"

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 August
River Vale, NJ

Average rainfall days in August - River Vale, NJ
  • Average rainfall days in August: 14.4 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 August
River Vale, NJ

Average snowfall in August - River Vale, NJ
  • Average snowfall in August: 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 August
River Vale, NJ

Average snowfall days in August - River Vale, NJ
  • Average snowfall days in August: 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 August /
Average sunshine in August
River Vale, NJ

Average daylight in August / Average sunshine in August - River Vale, NJ
  • Average daylight in August: 13h 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 August: 10h and 1min

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 August
River Vale, NJ

Average sunshine days in August - River Vale, NJ
  • Average sunshine days in August: 15 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 August
River Vale, NJ

Average UV index in August - River Vale, NJ
  • Average UV index in August: 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 August
River Vale, NJ

Average cloud cover in August - River Vale, NJ
  • Average cloud cover in August: 32

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 August
River Vale, NJ

Average visibility in August - River Vale, NJ
  • Average visibility in August: 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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River Vale, New Jersey, USA

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