August weather forecast
Penns Grove, NJ

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Weather in August

August, the last month of the summer in Penns Grove, is another warm month, with an average temperature ranging between min 67.3°F (19.6°C) and max 83.5°F (28.6°C).

Temperature

Penns Grove's average high-temperature in August is a still warm 83.5°F (28.6°C), marking an insignificant difference from the 85.3°F (29.6°C) of July. Penns Grove, during August, witnesses an average low-temperature of 67.3°F (19.6°C).

Heat index

August's mean heat index is estimated at a tropical 91.4°F (33°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

In Penns Grove, the average relative humidity in August is 75%.

Rainfall

August is the month with the most rainfall. Rain falls for 13.8 days and accumulates 2.68" (68mm) of precipitation.

Snowfall

June through October are months without snowfall in Penns Grove.

Ocean temperature

August is the month with the warmest seawater, with an average ocean temperature of 75.9°F (24.4°C).
Note: The allure of a swim in 75.9°F (24.4°C) waters can be influenced by your feelings towards the cold, today's sunshine, the wind's touch, and the ambient warmth. To put it in perspective, Olympic standards demand water temperatures of 77°F (25°C) to 82.4°F (28°C).

Daylight

The average length of the day in August is 13h and 41min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:34 pm EDT.

Sunshine

In Penns Grove, the average sunshine in August is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Penns Grove. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 during August translates into the following guidance:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.
Updated: Aug 28, 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, in August, in Penns Grove, is 83.5°F (28.6°C), while the average low-temperature is 67.3°F (19.6°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 91.4°F (33°C).

What is the average humidity in August?

In Penns Grove, the average relative humidity in August is 75%.

What is the wettest month?

The month with the most rainfall is August, when the rain falls for 13.8 days and typically aggregates up to 2.68" (68mm) of precipitation.

How many days does it rain in August?

In August, the rain falls for 13.8 days. Throughout August, 2.68" (68mm) of precipitation is accumulated.

When it does not snow?

In Penns Grove, snow does not fall in June through October.

What is the month with the warmest ocean?

August is the month with the warmest seawater, with an average ocean temperature of 75.9°F (24.4°C).

How warm is the water in August in Penns Grove?

In Penns Grove, in August, the average water temperature is 75.9°F (24.4°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.9°F (24.4°C).

What is the average length of the day in August?

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

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:01 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:34 pm EDT.

How many hours of sunshine does Penns Grove have in August?

In August, the average sunshine duration is 10.3h.

What is the month 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 of 6 to 7 symbolizes a high hazard to health 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
Penns Grove, NJ

Average temperature in August - Penns Grove, NJ
  • Average high temperature in August: 83.5°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 (37.9°F).

  • Average low temperature in August: 67.3°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 (26.2°F).

Average pressure in August
Penns Grove, NJ

Average pressure in August - Penns Grove, NJ
  • Average pressure in August: 29.99"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
Penns Grove, NJ

Average wind speed in August - Penns Grove, NJ
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in August
Penns Grove, NJ

Average humidity in August - Penns Grove, 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 (72%).

Average rainfall in August
Penns Grove, NJ

Average rainfall in August - Penns Grove, NJ
  • Average rainfall in August: 2.68"

The wettest month (with the highest rainfall) is August (2.68").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in August
Penns Grove, NJ

Average rainfall days in August - Penns Grove, NJ
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in August
Penns Grove, NJ

Average snowfall in August - Penns Grove, NJ
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.2").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Penns Grove, NJ

Average snowfall days in August - Penns Grove, NJ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in August
Penns Grove, NJ

Average sea temperature in August - Penns Grove, NJ
  • Average sea temperature in August: 75.9°F

The best month for swimming (with the highest average sea temperature) is August (75.9°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

Average daylight in August /
Average sunshine in August
Penns Grove, NJ

Average daylight in August / Average sunshine in August - Penns Grove, 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
Penns Grove, NJ

Average sunshine days in August - Penns Grove, NJ
  • Average sunshine days in August: 15.4 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12.2 days).

Average UV index in August
Penns Grove, NJ

Average UV index in August - Penns Grove, 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
Penns Grove, NJ

Average cloud cover in August - Penns Grove, NJ
  • Average cloud cover in August: 31

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

Average visibility in August
Penns Grove, NJ

Average visibility in August - Penns Grove, 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).

Penns Grove, New Jersey, USA

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