August weather forecast
Montclair, VA

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Weather in August

The last month of the summer, August, is also a hot month in Montclair, Virginia, with an average temperature ranging between max 86°F (30°C) and min 66.6°F (19.2°C).

Temperature

August experiences an average high-temperature of a still hot 86°F (30°C), barely different from July's 88.3°F (31.3°C). An average nighttime temperature of 66.6°F (19.2°C) is noted in Montclair during the month of August.

Heat index

The heat index value for August is estimated at a torrid 96.8°F (36°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Montclair, the average relative humidity in August is 74%.

Rainfall

The month with the most rainfall in Montclair is August, when the rain falls for 10.7 days and typically aggregates up to 1.18" (30mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day in Montclair is 13h and 37min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:38 am and sunset at 7:40 pm EDT.

Sunshine

The average sunshine in August in Montclair 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 of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 in August translates into these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in Montclair?

In Montclair, 86°F (30°C) is the average high-temperature and 66.6°F (19.2°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is estimated at 96.8°F (36°C).

What is the average humidity in August in Montclair?

In August, the average relative humidity is 74%.

What is the rainiest month in Montclair?

The month with the most rainfall in Montclair, Virginia, is August, when the rain falls for 10.7 days and typically aggregates up to 1.18" (30mm) of precipitation.

How much does it rain in Montclair in August?

In Montclair, during August, the rain falls for 10.7 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in Montclair?

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

How many hours of daylight does Montclair have in August?

The average day length in August in Montclair is 13h and 37min.

When is the sunrise / sunset in August in Montclair?

In August, on the first day of the month, sunrise is at 6:11 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:40 pm EDT.

How long on average sun shines in August in Montclair?

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

When is the highest UV index in Montclair?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index intensity 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 risk 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, VA

Average temperature in August - Montclair, VA
  • Average high temperature in August: 86°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in August: 66.6°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in August
Montclair, VA

Average pressure in August - Montclair, VA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Montclair, VA

Average wind speed in August - Montclair, VA
  • Average wind speed in August: 4.7mph

The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in August
Montclair, VA

Average humidity in August - Montclair, VA
  • Average humidity in August: 74%

The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (72%).

Average rainfall in August
Montclair, VA

Average rainfall in August - Montclair, VA
  • Average rainfall in August: 1.18"

The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in August
Montclair, VA

Average rainfall days in August - Montclair, VA
  • Average rainfall days in August: 10.7 days

The month with the highest number of rainy days is May (11.7 days).
The month with the least rainy days is November (5.5 days).

Average snowfall in August
Montclair, VA

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

The month with the highest snowfall is January (0.83").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Montclair, VA

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

The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Montclair, VA

Average daylight in August / Average sunshine in August - Montclair, VA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

Average sunshine days in August
Montclair, VA

Average sunshine days in August - Montclair, VA
  • Average sunshine days in August: 17 days

The month with the most sunshine days is November (23.1 days).
The month with the least sunshine days is May (16.9 days).

Average UV index in August
Montclair, VA

Average UV index in August - Montclair, VA
  • 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, November and December (UV index 2).

Average cloud cover in August
Montclair, VA

Average cloud cover in August - Montclair, VA
  • Average cloud cover in August: 33

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

Average visibility in August
Montclair, VA

Average visibility in August - Montclair, VA
  • 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).

Montclair, Virginia, USA

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