August weather forecast
Demarest, NJ

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Weather in August

August, the last month of the summer in Demarest, is another warm month, with an average temperature varying between 67.3°F (19.6°C) and 82.9°F (28.3°C).

Temperature

Demarest's August showcases an average high-temperature of a still moderately hot 82.9°F (28.3°C), hardly distinct from July's 84.9°F (29.4°C). During August, Demarest experiences a consistent low-temperature average of 67.3°F (19.6°C).

Heat index

During 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.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

August is the least humid month, with an average relative humidity of 68%.

Rainfall

In August, the rain falls for 14.4 days. Throughout August, 2.28" (58mm) of precipitation is accumulated. In Demarest, New Jersey, during the entire year, the rain falls for 153.9 days and collects up to 30.75" (781mm) of precipitation.

Snowfall

May through October are months without snowfall in Demarest.

Daylight

The average length of the day in August is 13h and 46min.
On the first day of August in Demarest, sunrise is at 5:52 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.

Sunshine

The average sunshine in August is 10.2h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. 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. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

How hot does it get in Demarest in August?

The high-temperature in Demarest, New Jersey, during August is 82.9°F (28.3°C) and the low-temperature is 67.3°F (19.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 87.8°F (31°C).

What is the least humid month in Demarest?

The least humid month in Demarest is August, with an average relative humidity of 68%.

What is the average humidity in August in Demarest?

In August, the average relative humidity in Demarest, New Jersey, is 68%.

How many days does it rain in August in Demarest?

In Demarest, in August, it is raining for 14.4 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow in Demarest?

In Demarest, snow does not fall in May through October.

How many hours of daylight does Demarest have in August?

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

When are sunrise and sunset in August in Demarest?

On the first day of August in Demarest, New Jersey, sunrise is at 5:52 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 many hours of sunshine does Demarest have in August?

In August, the average sunshine duration in Demarest is 10.2h.

When is the highest UV index in Demarest?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Demarest, New Jersey.

How high is the UV index in August in Demarest?

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

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

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in August: 67.3°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

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Average pressure in August
Demarest, NJ

Average pressure in August - Demarest, 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).

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Average wind speed in August
Demarest, NJ

Average wind speed in August - Demarest, NJ
  • Average wind speed in August: 5.8mph

The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in August
Demarest, NJ

Average humidity in August - Demarest, NJ
  • Average humidity in August: 68%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (68%).

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Average rainfall in August
Demarest, NJ

Average rainfall in August - Demarest, NJ
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in August
Demarest, NJ

Average rainfall days in August - Demarest, NJ
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in August
Demarest, NJ

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

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

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Average snowfall days in August
Demarest, NJ

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

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Demarest, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in August
Demarest, NJ

Average sunshine days in August - Demarest, NJ
  • Average sunshine days in August: 15 days

The months with the most sunshine days are January and November (18.1 days).
The months with the least sunshine days are April and June (12.7 days).

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Average UV index in August
Demarest, NJ

Average UV index in August - Demarest, 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).

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Average cloud cover in August
Demarest, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in August
Demarest, NJ

Average visibility in August - Demarest, 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).

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Demarest, New Jersey, USA

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