August weather forecast
Montvale, TN

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Weather in August

The last month of the summer, August, is also a hot month in Montvale, Tennessee, with an average temperature fluctuating between 64.4°F (18°C) and 86.7°F (30.4°C).

Temperature

The advent of August brings an average high-temperature of a still tropical 86.7°F (30.4°C), almost identical to the preceding month. Montvale experiences a dramatic descent in temperature during August, with the average nighttime reading settling at a refreshing 64.4°F (18°C).

Heat index

During August, the heat index is computed to be a sweltering 98.6°F (37°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

With an average relative humidity of 72%, August is the least humid month.

Rainfall

In Montvale, during August, the rain falls for 14.4 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Montvale, Tennessee, during the entire year, the rain falls for 149 days and collects up to 18.74" (476mm) of precipitation.

Snowfall

April through September are months without snowfall.

Daylight

In Montvale, the average length of the day in August is 13h and 28min.
On the first day of August, sunrise is at 6:44 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 8:04 pm EDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during August translates into the following guidance:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

In Montvale, in August, the average high-temperature is 86.7°F (30.4°C), and the average low-temperature is 64.4°F (18°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in August is computed to be 98.6°F (37°C).

What is the least humid month?

August is the least humid month, with an average relative humidity of 72%.

What is the average humidity in August?

The average relative humidity in August is 72%.

How many days does it rain in August?

In Montvale, in August, it is raining for 14.4 days, with typically 1.42" (36mm) of accumulated precipitation.

When it does not snow?

In Montvale, Tennessee, snow does not fall in April through September.

How many hours of daylight does Montvale have in August?

In Montvale, the average day length in August is 13h and 28min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:44 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 8:04 pm EDT.

How many hours of sunshine does Montvale have in August?

In August, the average sunshine duration is 10.1h.

What are the months with the highest UV index?

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

What is the UV index reading in August in Montvale?

In Montvale, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
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, TN

Average temperature in August - Montvale, TN
  • Average high temperature in August: 86.7°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (44.8°F).

  • Average low temperature in August: 64.4°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).

Average pressure in August
Montvale, TN

Average pressure in August - Montvale, TN
  • Average pressure in August: 30.01"Hg

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

Average wind speed in August
Montvale, TN

Average wind speed in August - Montvale, TN
  • Average wind speed in August: 3.6mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in August
Montvale, TN

Average humidity in August - Montvale, TN
  • Average humidity in August: 72%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).

Average rainfall in August
Montvale, TN

Average rainfall in August - Montvale, TN
  • Average rainfall in August: 1.42"

The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is October (1.18").

Average rainfall days in August
Montvale, TN

Average rainfall days in August - Montvale, TN
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.7 days).

Average snowfall in August
Montvale, TN

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

The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in August
Montvale, TN

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

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Montvale, TN

Average daylight in August / Average sunshine in August - Montvale, TN
  • Average daylight in August: 13h and 3min

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

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

Average sunshine days in August
Montvale, TN

Average sunshine days in August - Montvale, TN
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (19.3 days).
The months with the least sunshine days are February and July (12.5 days).

Average UV index in August
Montvale, TN

Average UV index in August - Montvale, TN
  • 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 and December (UV index 2).

Average cloud cover in August
Montvale, TN

Average cloud cover in August - Montvale, TN
  • Average cloud cover in August: 28

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in August
Montvale, TN

Average visibility in August - Montvale, TN
  • Average visibility in August: 6mi

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

Montvale, Tennessee, USA

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