August weather forecast
Rockleigh, NJ

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Weather in August

August, the last month of the summer in Rockleigh, 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

During August, Rockleigh observes a subtle ascent to a still moderately hot 82.9°F (28.3°C) from July's 84.9°F (29.4°C) in the average high-temperature. Rockleigh records a steady low-temperature average of 67.3°F (19.6°C) during August.

Heat index

In August, the average heat index is appraised at a tropical 87.8°F (31°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

The least humid month in Rockleigh, New Jersey, is August, with an average relative humidity of 68%.

Rainfall

In Rockleigh, New Jersey, in August, during 14.4 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Rockleigh, during the entire year, the rain falls for 153.9 days and collects up to 30.75" (781mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August in Rockleigh is 13h and 46min.
On the first day of August in Rockleigh, 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.

Sunshine

In Rockleigh, the average sunshine in August is 10.2h.

UV index

The months with the highest UV index in Rockleigh, New Jersey, are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during August leads to these advisories:
Inhibit overexposure. Warding off sun damage is of utmost importance. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

Is it hot in Rockleigh during August?

August temperatures in Rockleigh, 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). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in August is appraised at 87.8°F (31°C).

What is the least humid month in Rockleigh?

The least humid month in Rockleigh, New Jersey, is August, with an average relative humidity of 68%.

What is the average humidity in August in Rockleigh?

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

How many days does it rain in August in Rockleigh?

In Rockleigh, during August, the rain falls for 14.4 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When it does not snow in Rockleigh?

May through October are months without snowfall.

How many hours of daylight does Rockleigh have in August?

In August, the average day length in Rockleigh is 13h and 46min.

When are sunrise and sunset in August in Rockleigh?

On the first day of August, 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 long on average sun shines in August in Rockleigh?

The average sunshine duration in August in Rockleigh, New Jersey, is 10.2h.

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

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

How high is the UV index in August in Rockleigh?

In Rockleigh, New Jersey, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health risk 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
Rockleigh, NJ

Average temperature in August - Rockleigh, 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
Rockleigh, NJ

Average pressure in August - Rockleigh, 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
Rockleigh, NJ

Average wind speed in August - Rockleigh, 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
Rockleigh, NJ

Average humidity in August - Rockleigh, 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
Rockleigh, NJ

Average rainfall in August - Rockleigh, 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
Rockleigh, NJ

Average rainfall days in August - Rockleigh, 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
Rockleigh, NJ

Average snowfall in August - Rockleigh, 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
Rockleigh, NJ

Average snowfall days in August - Rockleigh, 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
Rockleigh, NJ

Average daylight in August / Average sunshine in August - Rockleigh, 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
Rockleigh, NJ

Average sunshine days in August - Rockleigh, 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
Rockleigh, NJ

Average UV index in August - Rockleigh, 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
Rockleigh, NJ

Average cloud cover in August - Rockleigh, 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
Rockleigh, NJ

Average visibility in August - Rockleigh, 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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Rockleigh, New Jersey, USA

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