August weather forecast
Montvale, VA

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Weather in August

August, the last month of the summer in Montvale, is also a moderately hot month, with an average temperature fluctuating between 84.7°F (29.3°C) and 61.3°F (16.3°C).

Temperature

Montvale commences August with an average high-temperature of a warm 84.7°F (29.3°C), maintaining a close resemblance to the previous month. August nights are characterized by a significant departure from the daytime highs, dropping to an average temperature of 61.3°F (16.3°C).

Heat index

For most parts of August, the heat index is calculated to be a tropical 93.2°F (34°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

In Montvale, Virginia, the average relative humidity in August is 75%.

Rainfall

In Montvale, in August, it is raining for 13.8 days, with typically 1.22" (31mm) of accumulated precipitation. In Montvale, during the entire year, the rain falls for 134.1 days and collects up to 14.76" (375mm) of precipitation.

Snowfall

May through October are months without snowfall in Montvale.

Daylight

In August, the average length of the day in Montvale, Virginia, is 13h and 34min.
On the first day of the month, sunrise is at 6:23 am and sunset at 8:26 pm. On the last day of August, in Montvale, sunrise is at 6:49 am and sunset at 7:48 pm EDT.

Sunshine

In August, the average sunshine in Montvale is 10.2h.

UV index

The months with the highest UV index in Montvale, Virginia, are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. 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. 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 it in Montvale in August?

In August, in Montvale, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 61.3°F (16.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 93.2°F (34°C).

What is the average humidity in August in Montvale?

In August, the average relative humidity is 75%.

How much does it rain in Montvale in August?

In August, in Montvale, Virginia, the rain falls for 13.8 days. Throughout August, 1.22" (31mm) of precipitation is accumulated.

When it does not snow in Montvale?

May through October are months without snowfall in Montvale.

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

In Montvale, Virginia, the average day length in August is 13h and 34min.

What time are sunrise and sunset in August in Montvale?

In August, on the first day of the month, sunrise is at 6:23 am and sunset at 8:26 pm. On the last day of the month, in Montvale, sunrise is at 6:49 am and sunset at 7:48 pm EDT.

How many hours of sunshine does Montvale have in August?

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

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

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 Montvale?

The average daily maximum UV index in August in Montvale, Virginia, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Montvale, VA

Average temperature in August - Montvale, VA
  • Average high temperature in August: 84.7°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (41.2°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in August
Montvale, VA

Average pressure in August - Montvale, VA
  • Average pressure in August: 30.02"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in August
Montvale, VA

Average wind speed in August - Montvale, VA
  • Average wind speed in August: 3.8mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

Average humidity in August
Montvale, VA

Average humidity in August - Montvale, VA
  • Average humidity in August: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is July (72%).

Average rainfall in August
Montvale, VA

Average rainfall in August - Montvale, VA
  • Average rainfall in August: 1.22"

The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is September (0.87").

Average rainfall days in August
Montvale, VA

Average rainfall days in August - Montvale, VA
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is November (6.9 days).

Average snowfall in August
Montvale, VA

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

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Montvale, VA

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

The month with the highest number of snowfall days is February (4.3 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
Montvale, VA

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

Average sunshine days in August
Montvale, VA

Average sunshine days in August - Montvale, VA
  • Average sunshine days in August: 15.5 days

The month with the most sunshine days is November (22.4 days).
The month with the least sunshine days is May (12.9 days).

Average UV index in August
Montvale, VA

Average UV index in August - Montvale, 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, February, November and December (UV index 2).

Average cloud cover in August
Montvale, VA

Average cloud cover in August - Montvale, VA
  • Average cloud cover in August: 34

The month with the most cloud cover is February (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 30).

Average visibility in August
Montvale, VA

Average visibility in August - Montvale, VA
  • Average visibility in August: 5mi

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

Montvale, Virginia, USA

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