July weather forecast
Jamestown, SC

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Weather in July

July, like June, is another hot summer month in Jamestown, South Carolina, with an average temperature varying between 74.8°F (23.8°C) and 90.1°F (32.3°C).

Temperature

In Jamestown, South Carolina, the month of July registers the highest temperatures, averaging 90.1°F (32.3°C) at the peak and 74.8°F (23.8°C) at the lowest.

Heat index

July's heat index is evaluated at a blistering 109.4°F (43°C). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in July in Jamestown is 75%.

Rainfall

In July, in Jamestown, South Carolina, the rain falls for 23.2 days. Throughout July, 4.33" (110mm) of precipitation is accumulated. Throughout the year, in Jamestown, there are 179.5 rainfall days, and 40.79" (1036mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall in Jamestown.

Daylight

In Jamestown, the average length of the day in July is 14h and 6min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:32 pm. On the last day of July, sunrise is at 6:31 am and sunset at 8:18 pm EDT.

Sunshine

July has the most sunshine of the year in Jamestown, with an average of 11.1h of sunshine.

UV index

June and July, with an average maximum UV index of 7, are months with the highest UV index in Jamestown. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In July, an average UV index of 7 transforms into the following instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What time of the year is the hottest in Jamestown?

In Jamestown, July is the warmest month, with temperatures averaging a high of 90.1°F (32.3°C) and a low of 74.8°F (23.8°C).

How hot is it in Jamestown in July?

During July, Jamestown experiences an average high-temperature of 90.1°F (32.3°C) and a low-temperature of 74.8°F (23.8°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is evaluated at 109.4°F (43°C).

What is the average humidity in July in Jamestown?

In July, the average relative humidity in Jamestown, South Carolina, is 75%.

How many days does it rain in July in Jamestown?

In Jamestown, during July, the rain falls for 23.2 days and regularly aggregates up to 4.33" (110mm) of precipitation.

When it does not snow in Jamestown?

March through November are months without snowfall in Jamestown, South Carolina.

How many hours of daylight does Jamestown have in July?

The average day length in July in Jamestown, South Carolina, is 14h and 6min.

When are sunrise and sunset in July in Jamestown?

In July, on the first day of the month, sunrise is at 6:13 am and sunset at 8:32 pm. On the last day of the month, in Jamestown, South Carolina, sunrise is at 6:31 am and sunset at 8:18 pm EDT.

What month has the most sunshine in Jamestown?

The month with the most sunshine in Jamestown is July, with an average of 11.1h of sunshine.

How long on average sun shines in July in Jamestown?

In Jamestown, the average sunshine duration in July is 11.1h.

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

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

How high is the UV index in July in Jamestown?

The average daily maximum UV index in July in Jamestown is 7. A UV Index reading of 6 to 7 represents a high health risk 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 July
Jamestown, SC

Average temperature in July - Jamestown, SC
  • Average high temperature in July: 90.1°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (55.8°F).

  • Average low temperature in July: 74.8°F

The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).

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Average pressure in July
Jamestown, SC

Average pressure in July - Jamestown, SC
  • Average pressure in July: 29.99"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in July
Jamestown, SC

Average wind speed in July - Jamestown, SC
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in July
Jamestown, SC

Average humidity in July - Jamestown, SC
  • Average humidity in July: 75%

The months with the highest relative humidity are August and December (78%).
The months with the lowest relative humidity are January and March (74%).

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Average rainfall in July
Jamestown, SC

Average rainfall in July - Jamestown, SC
  • Average rainfall in July: 4.33"

The wettest month (with the highest rainfall) is August (6.46").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in July
Jamestown, SC

Average rainfall days in July - Jamestown, SC
  • Average rainfall days in July: 23.2 days

The months with the highest number of rainy days are July and August (23.2 days).
The month with the least rainy days is November (8.9 days).

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Average snowfall in July
Jamestown, SC

Average snowfall in July - Jamestown, SC
  • Average snowfall in July: 0"

The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in July
Jamestown, SC

Average snowfall days in July - Jamestown, SC
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in July /
Average sunshine in July
Jamestown, SC

Average daylight in July / Average sunshine in July - Jamestown, SC
  • Average daylight in July: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in July: 11h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in July
Jamestown, SC

Average sunshine days in July - Jamestown, SC
  • Average sunshine days in July: 5.5 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (5.5 days).

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Average UV index in July
Jamestown, SC

Average UV index in July - Jamestown, SC
  • 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 3).

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Average cloud cover in July
Jamestown, SC

Average cloud cover in July - Jamestown, SC
  • Average cloud cover in July: 26

The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in July
Jamestown, SC

Average visibility in July - Jamestown, SC
  • 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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Jamestown, South Carolina, USA

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