August weather forecast
Montclair, NJ

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Weather in August

The last month of the summer, August, is also a moderately hot month in Montclair, New Jersey, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 66.6°F (19.2°C).

Temperature

The average high-temperature is a still warm 81.9°F (27.7°C) in August, hardly different from the 84.2°F (29°C) recorded in July. Throughout the month of August, Montclair sees a steady low-temperature average of 66.6°F (19.2°C).

Heat index

The heat index value during August is evaluated at a hot 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

April and August, with an average relative humidity of 72%, are the least humid months in Montclair.

Rainfall

In Montclair, New Jersey, during August, the rain falls for 16.3 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Montclair, during the entire year, the rain falls for 153.3 days and collects up to 24.92" (633mm) of precipitation.

Snowfall

In Montclair, New Jersey, snow does not fall in May through October.

Daylight

In Montclair, the average length of the day in August is 13h and 45min.
On the first day of the month, sunrise is at 5:53 am and sunset at 8:12 pm. On the last day of August, in Montclair, New Jersey, sunrise is at 6:23 am and sunset at 7:30 pm EDT.

Sunshine

In August, the average sunshine in Montclair, New Jersey, is 10.3h.

UV index

The months with the highest UV index in Montclair are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Shield from overexposure. Defense against sun-related harm is required. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

What is the average August temperature in Montclair?

Montclair in August has an average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 66.6°F (19.2°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is evaluated at 86°F (30°C).

What are the least humid months in Montclair?

April and August, with an average relative humidity of 72%, are the least humid months in Montclair.

What is the average humidity in August in Montclair?

The average relative humidity in August is 72%.

How much does it rain in Montclair in August?

In Montclair, New Jersey, in August, during 16.3 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

When it does not snow in Montclair?

May through October are months without snowfall in Montclair, New Jersey.

What is the average length of the day in August in Montclair?

The average day length in August is 13h and 45min.

When is the sunrise / sunset in August in Montclair?

On the first day of August, sunrise is at 5:53 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:30 pm EDT.

How long on average sun shines in August in Montclair?

The average sunshine duration in August in Montclair, New Jersey, is 10.3h.

What are the months with the highest UV index in Montclair?

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

What is the UV index reading in August in Montclair?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Montclair, NJ

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

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in August: 66.6°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure in August
Montclair, NJ

Average pressure in August - Montclair, NJ
  • Average pressure in August: 29.98"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).

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Average wind speed in August
Montclair, NJ

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

The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

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Average humidity in August
Montclair, NJ

Average humidity in August - Montclair, NJ
  • Average humidity in August: 72%

The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are April and August (72%).

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Average rainfall in August
Montclair, NJ

Average rainfall in August - Montclair, NJ
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is January (1.38").

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Average rainfall days in August
Montclair, NJ

Average rainfall days in August - Montclair, NJ
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in August
Montclair, NJ

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

The month with the highest snowfall is March (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Montclair, NJ

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

The month with the highest number of snowfall days is February (6.8 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
Montclair, NJ

Average daylight in August / Average sunshine in August - Montclair, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in August
Montclair, NJ

Average sunshine days in August - Montclair, NJ
  • Average sunshine days in August: 11.8 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.7 days).

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Average UV index in August
Montclair, NJ

Average UV index in August - Montclair, 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
Montclair, NJ

Average cloud cover in August - Montclair, NJ
  • Average cloud cover in August: 31

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in August
Montclair, NJ

Average visibility in August - Montclair, NJ
  • Average visibility in August: 6mi

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

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Montclair, New Jersey, USA

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