August weather forecast
Merchantville, NJ

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Weather in August

The last month of the summer, August, is another warm month in Merchantville, New Jersey, with an average temperature fluctuating between 68.5°F (20.3°C) and 84.2°F (29°C).

Temperature

As August takes its course, Merchantville's average high-temperature registers at a moderately hot 84.2°F (29°C), closely aligning with the preceding month. An average nighttime temperature of 68.5°F (20.3°C) is witnessed throughout August.

Heat index

The heat index in August is estimated at a tropical 91.4°F (33°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Realize that the values for the heat index are set for shaded places and light winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

In August, the average relative humidity in Merchantville is 71%.

Rainfall

The month with the most rainfall is August, when the rain falls for 12.4 days and typically aggregates up to 1.46" (37mm) of precipitation.

Snowfall

June through October are months without snowfall.

Daylight

In Merchantville, the average length of the day in August is 13h and 42min.
On the first day of August, sunrise is at 5:59 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:32 pm EDT.

Sunshine

In August, the average sunshine is 10.2h.

UV index

May 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 unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

The high-temperature during August is 84.2°F (29°C) and the low-temperature is 68.5°F (20.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is estimated at 91.4°F (33°C).

What is the average humidity in August?

In August, the average relative humidity is 71%.

What is the wettest month?

August is the month with the most rainfall. Rain falls for 12.4 days and accumulates 1.46" (37mm) of precipitation.

How many days does it rain in August?

In Merchantville, in August, during 12.4 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

When it does not snow?

June through October are months without snowfall.

What is the average length of the day in August?

In Merchantville, the average day length in August is 13h and 42min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:59 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:32 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 10.2h.

When is 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 estimate 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
Merchantville, NJ

Average temperature in August - Merchantville, NJ
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in August: 68.5°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

Average pressure in August
Merchantville, NJ

Average pressure in August - Merchantville, 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
Merchantville, NJ

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

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in August
Merchantville, NJ

Average humidity in August - Merchantville, NJ
  • Average humidity in August: 71%

The month with the highest relative humidity is October (77%).
The month with the lowest relative humidity is April (70%).

Average rainfall in August
Merchantville, NJ

Average rainfall in August - Merchantville, NJ
  • Average rainfall in August: 1.46"

The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in August
Merchantville, NJ

Average rainfall days in August - Merchantville, NJ
  • Average rainfall days in August: 12.4 days

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (6.6 days).

Average snowfall in August
Merchantville, NJ

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

The month with the highest snowfall is February (0.79").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Merchantville, NJ

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

The month with the highest number of snowfall days is January (3.6 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
Merchantville, NJ

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in August
Merchantville, NJ

Average sunshine days in August - Merchantville, NJ
  • Average sunshine days in August: 15.9 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (14 days).

Average UV index in August
Merchantville, NJ

Average UV index in August - Merchantville, 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
Merchantville, NJ

Average cloud cover in August - Merchantville, NJ
  • Average cloud cover in August: 32

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

Average visibility in August
Merchantville, NJ

Average visibility in August - Merchantville, 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).

Merchantville, New Jersey, USA

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