August weather forecast
Clayton, NJ

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Weather in August

August, the last month of the summer in Clayton, is another warm month, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 83.3°F (28.5°C).

Temperature

Clayton, New Jersey, records an average high-temperature of a still moderately hot 83.3°F (28.5°C) as August arrives, nearly mirroring the previous month's climate. An average nighttime temperature of 67.6°F (19.8°C) is recorded during August.

Heat index

The average heat index in August is appraised at a tropical 89.6°F (32°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In August, the average relative humidity is 75%.

Rainfall

In Clayton, during August, the rain falls for 14.7 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, there are 154.9 rainfall days, and 30.47" (774mm) of precipitation is accumulated.

Snowfall

In Clayton, snow does not fall in June through October.

Daylight

The average length of the day in August is 13h and 41min.
On the first day of August, sunrise is at 6:00 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:32 pm EDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index of 6 during August leads to these instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

The average high-temperature and low-temperature during August are 83.3°F (28.5°C) and 67.6°F (19.8°C) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is appraised at 89.6°F (32°C).

What is the average humidity in August?

In August, the average relative humidity is 75%.

How many days does it rain in August?

In Clayton, during August, the rain falls for 14.7 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow?

In Clayton, snow does not fall in June through October.

What is the average length of the day in August?

In August, the average day length is 13h and 41min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:32 pm EDT.

How long on average sun shines in August?

In August, the average sunshine duration is 10.3h.

What are the months with the highest UV index?

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

What is the UV index reading in August?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Clayton, NJ

Average temperature in August - Clayton, NJ
  • Average high temperature in August: 83.3°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (38.1°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 (26.8°F).

Average pressure in August
Clayton, NJ

Average pressure in August - Clayton, NJ
  • Average pressure in August: 29.98"Hg

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

Average wind speed in August
Clayton, NJ

Average wind speed in August - Clayton, NJ
  • Average wind speed in August: 5.7mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in August
Clayton, NJ

Average humidity in August - Clayton, NJ
  • Average humidity in August: 75%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (71%).

Average rainfall in August
Clayton, NJ

Average rainfall in August - Clayton, NJ
  • Average rainfall in August: 2.91"

The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in August
Clayton, NJ

Average rainfall days in August - Clayton, NJ
  • Average rainfall days in August: 14.7 days

The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in August
Clayton, NJ

Average snowfall in August - Clayton, NJ
  • Average snowfall in August: 0"

The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Clayton, NJ

Average snowfall days in August - Clayton, NJ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Clayton, NJ

Average daylight in August / Average sunshine in August - Clayton, NJ
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in August
Clayton, NJ

Average sunshine days in August - Clayton, NJ
  • Average sunshine days in August: 14 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in August
Clayton, NJ

Average UV index in August - Clayton, NJ
  • Average UV index in August: 6

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

Average cloud cover in August
Clayton, NJ

Average cloud cover in August - Clayton, NJ
  • Average cloud cover in August: 30

The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in August
Clayton, NJ

Average visibility in August - Clayton, 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).

Clayton, New Jersey, USA

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