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
In Dumbarton, July is identified by the highest average temperatures, reaching a peak of 90.7°F (32.6°C) and a low of 69.6°F (20.9°C).Heat index
The heat index in July is evaluated at an extremely hot 105.8°F (41°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
With an average relative humidity of 68%, July is the least humid month.Rainfall
In Dumbarton, in July, during 14.7 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Dumbarton, during the entire year, the rain falls for 151.1 days and collects up to 26.22" (666mm) of precipitation.Snowfall
May through October are months without snowfall in Dumbarton, Virginia.Daylight
The average length of the day in July is 14h and 28min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:35 pm. On the last day of July, in Dumbarton, sunrise is at 6:13 am and sunset at 8:18 pm EDT.
Sunshine
July has the most sunshine of the year in Dumbarton, with an average of 10.6h of sunshine.UV index
With an average maximum UV index of 7, July is the month with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 7 in July translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What part of the year is the hottest in Dumbarton?
How hot does it get in Dumbarton in July?
What is the least humid month in Dumbarton?
What is the average humidity in July in Dumbarton?
How many days does it rain in July in Dumbarton?
When it does not snow in Dumbarton?
What is the average length of the day in July in Dumbarton?
When are sunrise and sunset in July in Dumbarton?
What month has the most sunshine in Dumbarton?
How long on average sun shines in July in Dumbarton?
When is the highest UV index in Dumbarton?
What is the UV index reading in July in Dumbarton?
Average temperature in July
Dumbarton, VA
- Average high temperature in July: 90.7°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in July: 69.6°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in July
Dumbarton, VA
- Average pressure in July: 29.98"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in July
Dumbarton, VA
- Average wind speed in July: 5.4mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in July
Dumbarton, VA
- Average humidity in July: 68%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (68%).
Average rainfall in July
Dumbarton, VA
- Average rainfall in July: 2.32"
The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in July
Dumbarton, VA
- Average rainfall days in July: 14.7 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in July
Dumbarton, VA
- Average snowfall in July: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Dumbarton, VA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (3.5 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
Dumbarton, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in July
Dumbarton, VA
- Average sunshine days in July: 14.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in July
Dumbarton, VA
- Average UV index in July: 7
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in July
Dumbarton, VA
- Average cloud cover in July: 31
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in July
Dumbarton, VA
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Dumbarton, Virginia, USA
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