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 is the warmest month, exhibiting average temperatures of 89.6°F (32°C) at the peak and 65.8°F (18.8°C) at the base.Heat index
Throughout July, the heat index is estimated at a blisteringly hot 104°F (40°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant 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.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
July is the least humid month, with an average relative humidity of 69%.Rainfall
In July, the rain falls for 13.6 days. Throughout July, 1.85" (47mm) of precipitation is accumulated. In Columbia, during the entire year, the rain falls for 142.4 days and collects up to 25.51" (648mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in July is 14h and 28min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:38 pm. On the last day of July, sunrise is at 6:16 am and sunset at 8:22 pm EDT.
Sunshine
July has the most sunshine of the year, with an average of 10.8h of sunshine.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 during July leads to these advisories:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month?
How hot does it get in July?
What is the least humid month?
What is the average humidity in July?
How many days does it rain in July?
When it does not snow?
How many hours of daylight does Columbia have in July?
When is the sunrise / sunset in July?
What month has the most sunshine?
How many hours of sunshine does Columbia have in July?
What are the months with the highest UV index?
What is the UV index reading in July?
Average temperature in July
Columbia, VA
- Average high temperature in July: 89.6°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (43°F).
- Average low temperature in July: 65.8°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in July
Columbia, VA
- Average pressure in July: 29.98"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in July
Columbia, VA
- Average wind speed in July: 4.5mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in July
Columbia, VA
- Average humidity in July: 69%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).
Average rainfall in July
Columbia, VA
- Average rainfall in July: 1.85"
The wettest month (with the highest rainfall) is April (2.76").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in July
Columbia, VA
- Average rainfall days in July: 13.6 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in July
Columbia, VA
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Columbia, VA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Columbia, VA
- Average daylight in July: 14h and 3min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in July: 10h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in July
Columbia, VA
- Average sunshine days in July: 15.8 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in July
Columbia, VA
- Average UV index in July: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in July
Columbia, VA
- Average cloud cover in July: 30
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in July
Columbia, VA
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October and November (6mi).
The months with the lowest visibility are May, September and December (5mi).
Columbia, Virginia, USA
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