July weather forecast
Foster, VA

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Weather in July

July is a hot summer month in Foster, Virginia, with temperature in the range of an average high of 87.8°F (31°C) and an average low of 72.3°F (22.4°C).

Temperature

In Foster, the month of July registers the highest temperatures, averaging 87.8°F (31°C) at the peak and 72.3°F (22.4°C) at the lowest.

Heat index

Throughout July, the heat index is calculated to be a sweltering 100.4°F (38°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

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

Rainfall

In Foster, during July, the rain falls for 16.9 days and regularly aggregates up to 3.31" (84mm) of precipitation. Throughout the year, there are 165.3 rainfall days, and 34.25" (870mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Foster.

Daylight

The average length of the day in July in Foster is 14h and 27min.
On the first day of July, sunrise is at 5:48 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:14 pm EDT.

Sunshine

The month with the most sunshine is July, with an average of 10.8h of sunshine.

UV index

The months with the highest UV index in Foster are June and July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 7 during July, leads to the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What are the warmest months in Foster?

July proves to be the warmest month, recording an average peak temperature of 87.8°F (31°C) and a minimum temperature of 72.3°F (22.4°C).

Is it hot in Foster during July?

In Foster, in July, the average high-temperature is 87.8°F (31°C), and the average low-temperature is 72.3°F (22.4°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in July is calculated to be 100.4°F (38°C).

What is the least humid month in Foster?

With an average relative humidity of 72%, July is the least humid month in Foster.

What is the average humidity in July in Foster?

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

How much does it rain in Foster in July?

In Foster, Virginia, in July, during 16.9 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.

When it does not snow in Foster?

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

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

In Foster, Virginia, the average day length in July is 14h and 27min.

What time are sunrise and sunset in July in Foster?

On the first day of July in Foster, sunrise is at 5:48 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:14 pm EDT.

What month has the most sunshine in Foster?

The month with the most sunshine is July, with an average of 10.8h of sunshine.

How long on average sun shines in July in Foster?

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

What is the month with the highest UV index in Foster?

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

What is the UV index intensity in July in Foster?

In Foster, Virginia, the average daily maximum UV index in July is 7. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to 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 July
Foster, VA

Average temperature in July - Foster, 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
Foster, VA

Average pressure in July - Foster, 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
Foster, VA

Average wind speed in July - Foster, 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
Foster, VA

Average humidity in July - Foster, 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
Foster, VA

Average rainfall in July - Foster, 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
Foster, VA

Average rainfall days in July - Foster, 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
Foster, VA

Average snowfall in July - Foster, 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
Foster, VA

Average snowfall days in July - Foster, 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 daylight in July /
Average sunshine in July
Foster, VA

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

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 July: 10h and 5min

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
Foster, VA

Average sunshine days in July - Foster, 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
Foster, VA

Average UV index in July - Foster, 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
Foster, VA

Average cloud cover in July - Foster, 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
Foster, VA

Average visibility in July - Foster, 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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Foster, Virginia, USA

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