August weather forecast
Martinsville, VA

Share

Weather in August

Martinsville in August projects a break from July’s peak, with temperatures dropping slightly to an average high of 86.7°F (30.4°C). While maintaining the captivating essence of summer, a bit of rainfall balances the heat. August days are pervaded by warmth even as a hint of autumn lurks around the corner. As the month progresses, the nights get progressively cooler. September looms ahead with indications of milder climates and the cheerful advent of Fall.

Temperature

Transitioning into August, Martinsville records an average high-temperature of a still tropical 86.7°F (30.4°C), almost identical to July's 88.9°F (31.6°C). Martinsville observes a substantial disparity between daytime high and the average low-temperature of 64.2°F (17.9°C) during August nights.

Heat index

For August, the heat index is evaluated at a torrid 98.6°F (37°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 vital to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In August, the average relative humidity in Martinsville is 72%.

Rainfall

In Martinsville, Virginia, during August, the rain falls for 13.7 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 132.1 rainfall days, and 19.96" (507mm) of precipitation is accumulated.

Snowfall

In Martinsville, snow does not fall in April, June through October.

Daylight

The average length of the day in August is 13h and 31min.
On the first day of August in Martinsville, sunrise is at 6:26 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 7:48 pm EDT.

Sunshine

The average sunshine in August is 10.5h.

UV index

In Martinsville, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The high-temperature, in August, in Martinsville, records 86.7°F (30.4°C), while the low-temperature is 64.2°F (17.9°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 98.6°F (37°C).

What is the average humidity in August?

In Martinsville, the average relative humidity in August is 72%.

How many days does it rain in August?

In Martinsville, in August, during 13.7 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

When it does not snow?

In Martinsville, snow does not fall in April, June through October.

What is the average length of the day in August?

In August, the average day length is 13h and 31min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:26 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 7:48 pm EDT.

How long on average sun shines in August?

In August, the average sunshine duration is 10.5h.

What is the UV index reading in August?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Martinsville, VA

Average temperature in August - Martinsville, VA
  • Average high temperature in August: 86.7°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (44.1°F).

  • Average low temperature in August: 64.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in August
Martinsville, VA

Average pressure in August - Martinsville, VA
  • Average pressure in August: 30.01"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
Martinsville, VA

Average wind speed in August - Martinsville, VA
  • Average wind speed in August: 4.2mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in August
Martinsville, VA

Average humidity in August - Martinsville, VA
  • Average humidity in August: 72%

The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (70%).

Average rainfall in August
Martinsville, VA

Average rainfall in August - Martinsville, VA
  • Average rainfall in August: 1.46"

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is September (1.14").

Average rainfall days in August
Martinsville, VA

Average rainfall days in August - Martinsville, VA
  • Average rainfall days in August: 13.7 days

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (7 days).

Average snowfall in August
Martinsville, VA

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

The month with the highest snowfall is December (2.05").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in August
Martinsville, VA

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

The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Martinsville, VA
  • Average daylight in August: 13h and 3min

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

  • Average sunshine in August: 10h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days in August
Martinsville, VA

Average sunshine days in August - Martinsville, VA
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.2 days).

Average UV index in August
Martinsville, VA

Average UV index in August - Martinsville, VA
  • Average UV index in August: 6

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in August
Martinsville, VA

Average cloud cover in August - Martinsville, VA
  • Average cloud cover in August: 32

The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in August
Martinsville, VA

Average visibility in August - Martinsville, VA
  • Average visibility in August: 6mi

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

Martinsville, Virginia, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location