Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July temperatures tend to peak at an average high of 90.1°F (32.3°C) and dip to a low of 74.8°F (23.8°C).Heat index
July's heat index is computed to be a blistering 109.4°F (43°C). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.Data suggests that the heat index is set for environments in shade and with a light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
In July, the average relative humidity in Jamestown is 75%.Rainfall
In Jamestown, during July, the rain falls for 23.2 days and regularly aggregates up to 4.33" (110mm) of precipitation. Throughout the year, there are 179.5 rainfall days, and 40.79" (1036mm) of precipitation is accumulated.Snowfall
In Jamestown, snow does not fall in March through November.Daylight
In July, the average length of the day 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, with an average of 11.1h 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 of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In July, the maximum UV index of 7 suggests these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest?
How hot is it in July?
What is the average humidity in July?
How much does it rain in July?
When it does not snow?
How many hours of daylight does Jamestown have in July?
When is the sunrise / sunset in July?
What month has the most sunshine?
How long on average sun shines in July?
What are the months with the highest UV index?
What is the UV index reading in July?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Jamestown, South Carolina, USA
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