August weather forecast
Mountainville, NJ

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Weather in August

August, the last month of the summer in Mountainville, is also a moderately hot month, with an average temperature varying between 62.4°F (16.9°C) and 81.9°F (27.7°C).

Temperature

A minimal variation is noted in Mountainville's average high-temperature at the onset of August, reaching a still moderately hot 81.9°F (27.7°C) from July's 83.8°F (28.8°C). Throughout August, the average low-temperature records at a refreshing 62.4°F (16.9°C).

Heat index

The heat index in August is computed to be a hot 87.8°F (31°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In Mountainville, in August, during 15.2 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Mountainville, New Jersey, during the entire year, the rain falls for 162.3 days and collects up to 32.83" (834mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 44min.
On the first day of the month, sunrise is at 5:56 am and sunset at 8:14 pm. On the last day of August, sunrise is at 6:26 am and sunset at 7:32 pm EDT.

Sunshine

In Mountainville, the average sunshine in August is 10h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

August temperatures vary between a high-temperature of 81.9°F (27.7°C) and a low-temperature of 62.4°F (16.9°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is computed to be 87.8°F (31°C).

What is the average humidity in August?

In August, the average relative humidity is 77%.

How much does it rain in Mountainville in August?

In Mountainville, during August, the rain falls for 15.2 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow?

In Mountainville, snow does not fall in June through September.

How many hours of daylight does Mountainville have in August?

In August, the average day length is 13h and 44min.

When are sunrise and sunset in August?

On the first day of August in Mountainville, sunrise is at 5:56 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:32 pm EDT.

How many hours of sunshine does Mountainville have in August?

In August, the average sunshine duration in Mountainville is 10h.

When is the highest UV index in Mountainville?

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?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Mountainville, NJ

Average temperature in August - Mountainville, NJ
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in August: 62.4°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in August
Mountainville, NJ

Average pressure in August - Mountainville, NJ
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Mountainville, NJ

Average wind speed in August - Mountainville, NJ
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in August
Mountainville, NJ

Average humidity in August - Mountainville, NJ
  • Average humidity in August: 77%

The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (75%).

Average rainfall in August
Mountainville, NJ

Average rainfall in August - Mountainville, 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 (1.89").

Average rainfall days in August
Mountainville, NJ

Average rainfall days in August - Mountainville, NJ
  • Average rainfall days in August: 15.2 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in August
Mountainville, NJ

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

The month with the highest snowfall is March (4.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Mountainville, NJ

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

The months with the highest number of snowfall days are January and February (8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Mountainville, 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 18min).

  • Average sunshine in August: 10h and 0min

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
Mountainville, NJ

Average sunshine days in August - Mountainville, NJ
  • Average sunshine days in August: 13.3 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (11 days).

Average UV index in August
Mountainville, NJ

Average UV index in August - Mountainville, 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
Mountainville, NJ

Average cloud cover in August - Mountainville, NJ
  • Average cloud cover in August: 34

The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in August
Mountainville, NJ

Average visibility in August - Mountainville, NJ
  • Average visibility in August: 5mi

The months with the highest visibility are January, March, April, June, July, November and December (6mi).
The months with the lowest visibility are February, May, August, September and October (5mi).

Mountainville, New Jersey, USA

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