July weather forecast
Irwin, SC

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Weather in July

July, like June, is another tropical summer month in Irwin, South Carolina, with an average temperature ranging between max 90.3°F (32.4°C) and min 71.2°F (21.8°C).

Temperature

With an average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 71.2°F (21.8°C), July is the warmest month.

Heat index

In July, the heat index is calculated to be an extremely hot 107.6°F (42°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The months with the lowest humidity are June, July and November, with an average relative humidity of 71%.

Rainfall

In Irwin, in July, during 14.9 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 120.6 rainfall days, and 11.97" (304mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall.

Daylight

In July, the average length of the day is 14h and 13min.
On the first day of the month, sunrise is at 6:14 am and sunset at 8:40 pm. On the last day of July, in Irwin, sunrise is at 6:33 am and sunset at 8:26 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.9h 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 reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 7 in July translates into these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Jul 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

With an average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 71.2°F (21.8°C), July is the warmest month.

How hot is it in July?

The high-temperature, in July, in Irwin, records 90.3°F (32.4°C), while the low-temperature is 71.2°F (21.8°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 107.6°F (42°C).

What are the least humid months?

The months with the lowest humidity are June, July and November, with an average relative humidity of 71%.

What is the average humidity in July?

The average relative humidity in July is 71%.

How many days does it rain in July?

In July, the rain falls for 14.9 days. Throughout July, 1.54" (39mm) of precipitation is accumulated.

When it does not snow?

In Irwin, snow does not fall in March through December.

What is the average length of the day in July?

In July, the average day length is 14h and 13min.

When are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 6:14 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 8:26 pm EDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.9h of sunshine.

How many hours of sunshine does Irwin have in July?

In Irwin, the average sunshine duration in July is 10.9h.

When is the highest UV index?

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?

The average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's 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
Irwin, SC

Average temperature in July - Irwin, SC
  • Average high temperature in July: 90.3°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (49.8°F).

  • Average low temperature in July: 71.2°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

Average pressure in July
Irwin, SC

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

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in July
Irwin, SC

Average wind speed in July - Irwin, SC
  • Average wind speed in July: 5.3mph

The windiest months (with the highest average wind speed) are February and April (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in July
Irwin, SC

Average humidity in July - Irwin, SC
  • Average humidity in July: 71%

The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are June, July and November (71%).

Average rainfall in July
Irwin, SC

Average rainfall in July - Irwin, SC
  • Average rainfall in July: 1.54"

The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is September (0.51").

Average rainfall days in July
Irwin, SC

Average rainfall days in July - Irwin, SC
  • Average rainfall days in July: 14.9 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (5.9 days).

Average snowfall in July
Irwin, SC

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

The month with the highest snowfall is February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in July
Irwin, SC

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

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

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

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

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 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in July
Irwin, SC

Average sunshine days in July - Irwin, SC
  • Average sunshine days in July: 12.9 days

The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is July (12.9 days).

Average UV index in July
Irwin, SC

Average UV index in July - Irwin, SC
  • Average UV index in July: 7

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

Average cloud cover in July
Irwin, SC

Average cloud cover in July - Irwin, SC
  • Average cloud cover in July: 29

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in July
Irwin, SC

Average visibility in July - Irwin, 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).

Irwin, South Carolina, USA

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