August weather forecast
River Edge, NJ

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Weather in August

The last month of the summer, August, is also a moderately hot month in River Edge, New Jersey, with an average temperature fluctuating between 67.6°F (19.8°C) and 82.9°F (28.3°C).

Temperature

River Edge marks the onset of August with an average high-temperature of a still warm 82.9°F (28.3°C), subtly divergent from July's 84.7°F (29.3°C). August witnesses an average nighttime temperature of 67.6°F (19.8°C).

Heat index

For most parts of August, the heat index is estimated at a tropical 87.8°F (31°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

The least humid month is August, with an average relative humidity of 69%.

Rainfall

In River Edge, in August, it is raining for 15 days, with typically 2.6" (66mm) of accumulated precipitation. In River Edge, during the entire year, the rain falls for 159.3 days and collects up to 31.34" (796mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 46min.
On the first day of the month, sunrise is at 5:53 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 August, the average sunshine is 10.3h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The high-temperature, in August, in River Edge, is 82.9°F (28.3°C), while the low-temperature averages to 67.6°F (19.8°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is estimated at 87.8°F (31°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 69%.

What is the average humidity in August in River Edge?

In River Edge, the average relative humidity in August is 69%.

How much does it rain in River Edge in August?

In August, the rain falls for 15 days. Throughout August, 2.6" (66mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does River Edge have in August?

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

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:53 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?

The average sunshine duration in August is 10.3h.

What are the months with the highest UV index in River Edge?

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

What is the UV index reading in August?

In River Edge, the average daily maximum UV index in August is 6. A UV Index reading 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
River Edge, NJ

Average temperature in August - River Edge, NJ
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in August: 67.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in August
River Edge, NJ

Average pressure in August - River Edge, 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).

Average wind speed in August
River Edge, NJ

Average wind speed in August - River Edge, NJ
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in August
River Edge, NJ

Average humidity in August - River Edge, NJ
  • Average humidity in August: 69%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (69%).

Average rainfall in August
River Edge, NJ

Average rainfall in August - River Edge, NJ
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in August
River Edge, NJ

Average rainfall days in August - River Edge, NJ
  • Average rainfall days in August: 15 days

The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in August
River Edge, NJ

Average snowfall in August - River Edge, NJ
  • Average snowfall in August: 0"

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

Average snowfall days in August
River Edge, NJ

Average snowfall days in August - River Edge, NJ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
River Edge, NJ

Average daylight in August / Average sunshine in August - River Edge, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in August
River Edge, NJ

Average sunshine days in August - River Edge, NJ
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (12.2 days).

Average UV index in August
River Edge, NJ

Average UV index in August - River Edge, 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).

Average cloud cover in August
River Edge, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in August
River Edge, NJ

Average visibility in August - River Edge, 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).

River Edge, New Jersey, USA

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