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
August's arrival brings an average high-temperature of a still moderately hot 84.7°F (29.3°C), slightly deviating from July's 85.6°F (29.8°C). Jamestown experiences a mean temperature of 63.3°F (17.4°C) during August nights.Heat index
In August, the average heat index is evaluated at a sweltering 95°F (35°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
The months with the lowest humidity in Jamestown, Tennessee, are April, June, August, October and November, with an average relative humidity of 77%.Rainfall
In Jamestown, Tennessee, during August, the rain falls for 17.7 days and regularly aggregates up to 2.95" (75mm) of precipitation. In Jamestown, during the entire year, the rain falls for 170.9 days and collects up to 37.68" (957mm) of precipitation.Snowfall
In Jamestown, snow does not fall in May through September.Daylight
In August, the average length of the day is 13h and 30min.On the first day of the month, sunrise is at 5:46 am and sunset at 7:45 pm. On the last day of August, in Jamestown, sunrise is at 6:10 am and sunset at 7:08 pm CDT.
Sunshine
In Jamestown, the average sunshine in August is 10.1h.UV index
The months with the highest UV index in Jamestown are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 6 in August leads to these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
How hot is August in Jamestown?
What is the least humid month in Jamestown?
What is the average humidity in August in Jamestown?
How much does it rain in Jamestown in August?
When it does not snow in Jamestown?
How many hours of daylight does Jamestown have in August?
What time are sunrise and sunset in August in Jamestown?
How long on average sun shines in August in Jamestown?
When is the highest UV index in Jamestown?
What is the UV index reading in August in Jamestown?
Average temperature in August
Jamestown, TN
- Average high temperature in August: 84.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in August: 63.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in August
Jamestown, TN
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in August
Jamestown, TN
- Average wind speed in August: 4mph
The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in August
Jamestown, TN
- Average humidity in August: 77%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are April, June, August, October and November (77%).
Average rainfall in August
Jamestown, TN
- Average rainfall in August: 2.95"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in August
Jamestown, TN
- Average rainfall days in August: 17.7 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in August
Jamestown, TN
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Jamestown, TN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Jamestown, TN
- Average daylight in August: 13h and 3min
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 1min
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 12min).
Average sunshine days in August
Jamestown, TN
- Average sunshine days in August: 11.6 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in August
Jamestown, 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
Jamestown, TN
- Average cloud cover in August: 34
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in August
Jamestown, TN
- Average visibility in August: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Jamestown, Tennessee, USA
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