August weather forecastGreenbrier, TN
August
Weather in August
August, the last month of the summer in Greenbrier, is another tropical month, with temperature in the range of an average low of 67.1°F (19.5°C) and an average high of 86°F (30°C).Temperature
The onset of August manifests an average high-temperature of a still hot 86°F (30°C), demonstrating a minor variation from the preceding month. Greenbrier reports an average nighttime low-temperature of 67.1°F (19.5°C) in August.Heat index
August's heat index is computed to be a fiery hot 98.6°F (37°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
In August, the average relative humidity is 76%.Rainfall
In August, in Greenbrier, the rain falls for 17.8 days. Throughout August, 3.58" (91mm) of precipitation is accumulated. In Greenbrier, during the entire year, the rain falls for 174.6 days and collects up to 37.68" (957mm) of precipitation.Snowfall
In Greenbrier, Tennessee, snow does not fall in May through October.Daylight
The average length of the day in August is 13h and 30min.On the first day of the month, sunrise is at 5:54 am and sunset at 7:52 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:16 pm CDT.
Sunshine
The average sunshine in August in Greenbrier is 10.2h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In August, the maximum UV index of 6 translates into these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Greenbrier, TN
- Average high temperature in August: 86°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (43°F).
- Average low temperature in August: 67.1°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 (29.3°F).
Average pressure in August
Greenbrier, 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 (29.96"Hg).
Average wind speed in August
Greenbrier, TN
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in August
Greenbrier, TN
- Average humidity in August: 76%
The months with the highest relative humidity are March, May and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Greenbrier, TN
- Average rainfall in August: 3.58"
The wettest month (with the highest rainfall) is July (4.37").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in August
Greenbrier, TN
- Average rainfall days in August: 17.8 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in August
Greenbrier, TN
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Greenbrier, TN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Greenbrier, TN
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in August: 10h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in August
Greenbrier, TN
- Average sunshine days in August: 11.4 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in August
Greenbrier, TN
- Average UV index in August: 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, February and December (UV index 2).
Average cloud cover in August
Greenbrier, TN
- Average cloud cover in August: 31
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in August
Greenbrier, 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).
