July weather forecastJoanna, SC
July
Weather in July
July, like June, is another tropical summer month in Joanna, South Carolina, with an average temperature ranging between max 91.8°F (33.2°C) and min 70.3°F (21.3°C).Temperature
July is the warmest month of the year, registering average temperatures as high as 91.8°F (33.2°C) and as low as 70.3°F (21.3°C).Heat index
July's mean heat index is appraised at a blisteringly hot 111.2°F (44°C). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.Data suggests that the heat index is set for environments in shade and with a light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
The least humid month is July, with an average relative humidity of 70%.Rainfall
In Joanna, during July, the rain falls for 16 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Joanna, during the entire year, the rain falls for 150.3 days and collects up to 31.85" (809mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In July, the average length of the day is 14h and 11min.On the first day of July, sunrise is at 6:18 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 8:29 pm EDT.
Sunshine
The month with the most sunshine in Joanna is July, with an average of 10.7h of sunshine.UV index
In Joanna, South Carolina, the average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: In July, a daily UV index of 6 turns into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Joanna, SC
- Average high temperature in July: 91.8°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in July: 70.3°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).
Average pressure in July
Joanna, SC
- Average pressure in July: 30"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in July
Joanna, SC
- Average wind speed in July: 5mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in July
Joanna, SC
- Average humidity in July: 70%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).
Average rainfall in July
Joanna, SC
- Average rainfall in July: 2.72"
The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in July
Joanna, SC
- Average rainfall days in July: 16 days
The month with the highest number of rainy days is August (16.5 days).
The months with the least rainy days are October and November (9 days).
Average snowfall in July
Joanna, SC
- Average snowfall in July: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in July
Joanna, SC
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (0.9 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
Joanna, SC
- Average daylight in July: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in July: 10h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in July
Joanna, SC
- Average sunshine days in July: 12 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (12 days).
Average UV index in July
Joanna, SC
- Average UV index in July: 6
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in July
Joanna, SC
- Average cloud cover in July: 31
The months with the most cloud cover are February and December (Cloud cover 44).
The months with the least cloud cover are June, July and October (Cloud cover 31).
Average visibility in July
Joanna, 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).
