August weather forecast
Dayton, VA

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Weather in August

August, the last month of the summer in Dayton, is also a moderately hot month, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 82°F (27.8°C).

Temperature

Dayton marks the arrival of August with an average high-temperature of a still moderately hot 82°F (27.8°C), hardly different from July's 83.8°F (28.8°C). The nighttime temperature during August exhibits a clear drop from daytime highs, settling at a refreshing 60.1°F (15.6°C).

Heat index

In August, the average heat index is calculated to be a hot 87.8°F (31°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In Dayton, the average relative humidity in August is 76%.

Rainfall

In Dayton, during August, the rain falls for 18 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, there are 167.3 rainfall days, and 30.35" (771mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 37min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:25 pm. On the last day of August, in Dayton, sunrise is at 6:44 am and sunset at 7:46 pm EDT.

Sunshine

In Dayton, the average sunshine in August is 10.1h.

UV index

In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In August, the UV index of 5 transforms into the following advice:
Undertake protective steps - Preventing sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

The high-temperature, in August, in Dayton, records 82°F (27.8°C), while the low-temperature is 60.1°F (15.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August?

The average relative humidity in August is 76%.

How many days does it rain in August in Dayton?

In Dayton, in August, during 18 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Dayton have in August?

In August, the average day length is 13h and 37min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:18 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:46 pm EDT.

How many hours of sunshine does Dayton have in August?

In Dayton, the average sunshine duration in August is 10.1h.

What is the UV index intensity in August?

In Dayton, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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 August
Dayton, VA

Average temperature in August - Dayton, VA
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in August: 60.1°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in August
Dayton, VA

Average pressure in August - Dayton, VA
  • Average pressure in August: 30.01"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 August
Dayton, VA

Average wind speed in August - Dayton, VA
  • Average wind speed in August: 4.3mph

The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in August
Dayton, VA

Average humidity in August - Dayton, VA
  • Average humidity in August: 76%

The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January and July (74%).

Average rainfall in August
Dayton, VA

Average rainfall in August - Dayton, VA
  • Average rainfall in August: 2.91"

The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days in August
Dayton, VA

Average rainfall days in August - Dayton, VA
  • Average rainfall days in August: 18 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9 days).

Average snowfall in August
Dayton, VA

Average snowfall in August - Dayton, VA
  • Average snowfall in August: 0"

The month with the highest snowfall is March (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Dayton, VA

Average snowfall days in August - Dayton, VA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Dayton, VA

Average daylight in August / Average sunshine in August - Dayton, VA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in August
Dayton, VA

Average sunshine days in August - Dayton, VA
  • Average sunshine days in August: 10.7 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.9 days).

Average UV index in August
Dayton, VA

Average UV index in August - Dayton, VA
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Dayton, VA

Average cloud cover in August - Dayton, VA
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 32).

Average visibility in August
Dayton, VA

Average visibility in August - Dayton, VA
  • Average visibility in August: 5mi

The months with the highest visibility are February, April, June, July and November (6mi).
The months with the lowest visibility are January, March, May, August, September, October and December (5mi).

Dayton, Virginia, USA

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