July weather forecast
Martinsville, VA

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Weather in July

With the highest average temperatures, July is the climax of Martinsville's summer. Daytime temperatures can reach up to 88.9°F (31.6°C), bringing the zenith of warmth in the year. Whether it is leisurely walks under the moon or relaxing indoor activities, summer afternoons turn into enjoyable summer evenings. Despite the heat, July's charm is hard to deny. As the city moves into August, a slight decline in temperature and increase in rainfall create anticipation.

Temperature

Martinsville, Virginia, reaches its highest average temperatures in July, measuring 88.9°F (31.6°C) at the peak and 66°F (18.9°C) at the lowest.

Heat index

The heat index for July is evaluated at a sweltering 102.2°F (39°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

July is the least humid month, with an average relative humidity of 70%.

Rainfall

In Martinsville, in July, it is raining for 14.3 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, in Martinsville, Virginia, there are 132.1 rainfall days, and 19.96" (507mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Martinsville, the average length of the day in July is 14h and 23min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:42 pm. On the last day of July, sunrise is at 6:25 am and sunset at 8:26 pm EDT.

Sunshine

With an average of 10.8h of sunshine, July has the most sunshine of the year.

UV index

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In July, the maximum UV index of 6 suggests these recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest in Martinsville?

July stands out as Martinsville's warmest month, with an average high-temperature of 88.9°F (31.6°C) and a low-temperature of 66°F (18.9°C).

How hot does it get in July?

July temperatures vary between a high-temperature of 88.9°F (31.6°C) and a low-temperature of 66°F (18.9°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 102.2°F (39°C).

What is the least humid month?

July is the least humid month, with an average relative humidity of 70%.

What is the average humidity in July?

In July, the average relative humidity in Martinsville is 70%.

How much does it rain in July?

In July, the rain falls for 14.3 days. Throughout July, 1.5" (38mm) of precipitation is 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 July?

In July, the average day length is 14h and 23min.

When are sunrise and sunset in July?

On the first day of July, sunrise is at 6:04 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 8:26 pm EDT.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.8h of sunshine.

How many hours of sunshine does Martinsville have in July?

In Martinsville, the average sunshine duration in July is 10.8h.

What is the UV index intensity in July?

In Martinsville, Virginia, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents 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 July
Martinsville, VA

Average temperature in July - Martinsville, VA
  • Average high temperature in July: 88.9°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 July: 66°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 July
Martinsville, VA

Average pressure in July - Martinsville, VA
  • Average pressure in July: 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 July
Martinsville, VA

Average wind speed in July - Martinsville, VA
  • Average wind speed in July: 4.3mph

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 July
Martinsville, VA

Average humidity in July - Martinsville, VA
  • Average humidity in July: 70%

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 July
Martinsville, VA

Average rainfall in July - Martinsville, VA
  • Average rainfall in July: 1.5"

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 July
Martinsville, VA

Average rainfall days in July - Martinsville, VA
  • Average rainfall days in July: 14.3 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 July
Martinsville, VA

Average snowfall in July - Martinsville, VA
  • Average snowfall in July: 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 July
Martinsville, VA

Average snowfall days in July - Martinsville, VA
  • Average snowfall days in July: 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 July /
Average sunshine in July
Martinsville, VA

Average daylight in July / Average sunshine in July - Martinsville, VA
  • Average daylight in July: 14h and 2min

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 July: 10h and 5min

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 July
Martinsville, VA

Average sunshine days in July - Martinsville, VA
  • Average sunshine days in July: 14.2 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 July
Martinsville, VA

Average UV index in July - Martinsville, VA
  • Average UV index in July: 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 July
Martinsville, VA

Average cloud cover in July - Martinsville, VA
  • Average cloud cover in July: 29

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 July
Martinsville, VA

Average visibility in July - Martinsville, VA
  • Average visibility in July: 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

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