Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
With the onset of August, Bethesda's average high-temperature clocks in at a still hot 86.5°F (30.3°C), showing a minor fluctuation from the previous month. Bethesda's average low-temperature in August is measured at an enjoyable 67.6°F (19.8°C).Heat index
The average heat index in August is calculated to be a sweltering 98.6°F (37°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
In August, the average relative humidity is 76%.Rainfall
In Bethesda, in August, it is raining for 14.4 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, there are 141.9 rainfall days, and 17.32" (440mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Bethesda.Daylight
In Bethesda, the average length of the day in August is 13h and 28min.On the first day of the month, sunrise is at 5:55 am and sunset at 7:51 pm. On the last day of August, in Bethesda, Tennessee, sunrise is at 6:18 am and sunset at 7:15 pm CDT.
Sunshine
In August, the average sunshine in Bethesda is 10.3h.UV index
May through August, with an average maximum UV index of 6, 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 average individuals.Note: The UV index of 6 during August leads to these advisories:
Refrain from overexposure. Fair-skinned individuals could 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. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
How hot is August in Bethesda?
What is the average humidity in August in Bethesda?
How many days does it rain in August in Bethesda?
When it does not snow in Bethesda?
How many hours of daylight does Bethesda have in August?
When is the sunrise / sunset in August in Bethesda?
How many hours of sunshine does Bethesda have in August?
When is the highest UV index in Bethesda?
What is the UV index reading in August in Bethesda?
Average temperature in August
Bethesda, TN
- Average high temperature in August: 86.5°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.3°F).
- Average low temperature in August: 67.6°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in August
Bethesda, TN
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in August
Bethesda, TN
- Average wind speed in August: 4.6mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in August
Bethesda, TN
- Average humidity in August: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Bethesda, TN
- Average rainfall in August: 1.85"
The wettest month (with the highest rainfall) is July (2.17").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in August
Bethesda, TN
- Average rainfall days in August: 14.4 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is November (7.2 days).
Average snowfall in August
Bethesda, TN
- Average snowfall in August: 0"
The months with the highest snowfall are February and December (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Bethesda, TN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Bethesda, TN
- Average daylight in August: 13h and 3min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 10h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in August
Bethesda, TN
- Average sunshine days in August: 14.3 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in August
Bethesda, TN
- Average UV index in August: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in August
Bethesda, TN
- Average cloud cover in August: 30
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in August
Bethesda, TN
- Average visibility in August: 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).
Bethesda, Tennessee, USA
Weather forecast for your location
2. Allow the app to use your location
