July weather forecast
Columbia, SC

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The Us State House of South Carolina, in Columbia, with the Wade Hampton Statue
The Us State House of South Carolina, in Columbia, with the Wade Hampton Statue

Weather in July

July sets the stage for the hottest month in Columbia with an average high of 91.6°F (33.1°C). A significant surge in rainfall days from June to July keeps vegetation adequately moisturized. Despite the high temperatures, July continues to offer extensive daylight hours to take advantage of. Dwindling wind speeds further accentuate the hot conditions. Meanwhile, the UV index reaches an annual peak signifying the height of summer.

Temperature

Temperature records mark July as the warmest month, with highs averaging 91.6°F (33.1°C) and lows at 73.8°F (23.2°C).

Heat index

During July, the heat index is computed to be a blisteringly hot 109.4°F (43°C). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.
The heat index's values are generally associated with conditions in shade and light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. 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 extremely vital to 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.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The months with the lowest humidity are January, July and November, with an average relative humidity of 69%.

Rainfall

In Columbia, during July, the rain falls for 16.3 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, there are 141.3 rainfall days, and 25.28" (642mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall.

Daylight

In Columbia, the average length of the day in July is 14h and 10min.
On the first day of the month, sunrise is at 6:16 am and sunset at 8:39 pm. On the last day of July, sunrise is at 6:35 am and sunset at 8:25 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.7h of sunshine.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in July interprets into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

In Columbia, the average highest temperatures are observed in July, with a high of 91.6°F (33.1°C) and a low of 73.8°F (23.2°C).

How hot is it in July?

The average high-temperature and low-temperature during July are 91.6°F (33.1°C) and 73.8°F (23.2°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 109.4°F (43°C).

What are the least humid months?

January, July and November, with an average relative humidity of 69%, are the least humid months.

What is the average humidity in July?

In Columbia, the average relative humidity in July is 69%.

How much does it rain in July?

In Columbia, during July, the rain falls for 16.3 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow?

March through November are months without snowfall.

What is the average length of the day in July?

In July, the average day length is 14h and 10min.

What time are sunrise and sunset in July?

On the first day of July, sunrise is at 6:16 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 8:25 pm EDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.7h of sunshine.

How many hours of sunshine does Columbia have in July?

In Columbia, South Carolina, the average sunshine duration in July is 10.7h.

What are the months with the highest UV index?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in July?

In Columbia, the average daily maximum UV index in July is 7. A UV Index of 6 to 7 symbolizes 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
Columbia, SC

Average temperature in July - Columbia, SC
  • Average high temperature in July: 91.6°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (52.9°F).

  • Average low temperature in July: 73.8°F

The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).

Average pressure in July
Columbia, SC

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

The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in July
Columbia, SC

Average wind speed in July - Columbia, SC
  • Average wind speed in July: 6.1mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in July
Columbia, SC

Average humidity in July - Columbia, SC
  • Average humidity in July: 69%

The month with the highest relative humidity is December (74%).
The months with the lowest relative humidity are January, July and November (69%).

Average rainfall in July
Columbia, SC

Average rainfall in July - Columbia, SC
  • Average rainfall in July: 2.09"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.46").

Average rainfall days in July
Columbia, SC

Average rainfall days in July - Columbia, SC
  • Average rainfall days in July: 16.3 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is October (7.3 days).

Average snowfall in July
Columbia, SC

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

The month with the highest snowfall is February (0.47").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in July
Columbia, SC

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

The month with the highest number of snowfall days is February (0.3 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
Columbia, SC

Average daylight in July / Average sunshine in July - Columbia, 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 4min

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 18min).

Average sunshine days in July
Columbia, SC

Average sunshine days in July - Columbia, SC
  • Average sunshine days in July: 11.7 days

The month with the most sunshine days is October (22.7 days).
The month with the least sunshine days is July (11.7 days).

Average UV index in July
Columbia, SC

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in July
Columbia, SC

Average cloud cover in July - Columbia, SC
  • Average cloud cover in July: 30

The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are June and October (Cloud cover 29).

Average visibility in July
Columbia, SC

Average visibility in July - Columbia, 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).

Columbia, South Carolina, USA

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