July weather forecast
Yorktown, VA

Weather in July

July in Yorktown, Virginia, is a hot summer month, with an average temperature varying between 87.8°F (31°C) and 72.3°F (22.4°C).

Temperature

The warmest month is July, with an average high-temperature of 87.8°F (31°C) and an average low-temperature of 72.3°F (22.4°C).

Heat index

In July, the average heat index is calculated to be a sweltering 100.8°F (38.2°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, pregnancy, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

July is the least humid month in Yorktown, Virginia, with an average relative humidity of 72%.

Rainfall

In Yorktown, it is raining for 16.9 days, with typically 3.31" (84mm) of accumulated precipitation. In Yorktown, during the entire year, the rain falls for 165.3 days and collects up to 34.25" (870mm) of precipitation.

Snowfall

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

Ocean temperature

In Yorktown, Virginia, the average seawater temperature in July is 78.1°F (25.6°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in July is 14h and 26min.
On the first day of the month, sunrise is at 5:49 am and sunset at 8:30 pm. On the last day of July, in Yorktown, sunrise is at 6:10 am and sunset at 8:14 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in July interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the warmest month in Yorktown?

The warmest month in Yorktown is July, with an average high-temperature of 87.8°F (31°C) and an average low-temperature of 72.3°F (22.4°C).

What is the temperature in July in Yorktown?

The average high-temperature, in July, is 87.8°F (31°C), while the average low-temperature is 72.3°F (22.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in July is calculated to be 100.8°F (38.2°C).

What is the least humid month in Yorktown?

July is the least humid month in Yorktown, Virginia, with an average relative humidity of 72%.

What is the average humidity in July in Yorktown?

In Yorktown, the average relative humidity in July is 72%.

How many days does it rain in July in Yorktown?

In Yorktown, Virginia, in July, it is raining for 16.9 days, with typically 3.31" (84mm) of accumulated precipitation.

When it does not snow in Yorktown?

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

What is the water temperature in July in Yorktown?

In July, the average ocean temperature in Yorktown, Virginia, is 78.1°F (25.6°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in July in Yorktown?

In Yorktown, the average day length in July is 14h and 26min.

What time are sunrise and sunset in July in Yorktown?

On the first day of July in Yorktown, Virginia, sunrise is at 5:49 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:14 pm EDT.

What month has the most sunshine in Yorktown?

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

How many hours of sunshine does Yorktown have in July?

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

When is the highest UV index in Yorktown?

June and July, with an average maximum UV index of 7, are months with the highest UV index in Yorktown, Virginia.

How high is the UV index in July in Yorktown?

In July, the average daily maximum UV index in Yorktown, Virginia, is 7. A UV Index 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 sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Yorktown, VA

Average temperature in July - Yorktown, VA
  • Average high temperature in July: 87.8°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in July: 72.3°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure in July
Yorktown, VA

Average pressure in July - Yorktown, VA
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in July
Yorktown, VA

Average wind speed in July - Yorktown, VA
  • Average wind speed in July: 7.1mph

The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

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Average humidity in July
Yorktown, VA

Average humidity in July - Yorktown, VA
  • Average humidity in July: 72%

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

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Average rainfall in July
Yorktown, VA

Average rainfall in July - Yorktown, VA
  • Average rainfall in July: 3.31"

The wettest month (with the highest rainfall) is August (3.62").
The driest month (with the least rainfall) is September (2.4").

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Average rainfall days in July
Yorktown, VA

Average rainfall days in July - Yorktown, VA
  • Average rainfall days in July: 16.9 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is November (9.6 days).

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Average snowfall in July
Yorktown, VA

Average snowfall in July - Yorktown, VA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in July
Yorktown, VA

Average snowfall days in July - Yorktown, VA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in July
Yorktown, VA

Average sea temperature in July - Yorktown, VA
  • Average sea temperature in July: 78.1°F

The best month for swimming (with the highest average sea temperature) is August (79.6°F).
The coldest month (with the lowest average sea temperature) is February (48.7°F).

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Average daylight in July /
Average sunshine in July
Yorktown, VA

Average daylight in July / Average sunshine in July - Yorktown, VA
  • Average daylight in July: 14h and 26min

The month with the longest days is June (Average daylight: 14h and 41min).
The month with the shortest days is December (Average daylight: 9h and 39min).

  • Average sunshine in July: 10h and 48min

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

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Average sunshine days in July
Yorktown, VA

Average sunshine days in July - Yorktown, VA
  • Average sunshine days in July: 12.2 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in July
Yorktown, VA

Average UV index in July - Yorktown, VA
  • Average UV index in July: 7

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in July
Yorktown, VA

Average cloud cover in July - Yorktown, VA
  • Average cloud cover in July: 28

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in July
Yorktown, VA

Average visibility in July - Yorktown, VA
  • Average visibility in July: 6mi

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

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