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
The shift into August finds Portland at an average high-temperature of a moderately hot 85.6°F (29.8°C), closely comparable to July's conditions. August witnesses an average nighttime temperature of 66.9°F (19.4°C).Heat index
The heat index value during August is calculated to be a very hot 96.8°F (36°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. 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 human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
In Portland, the average relative humidity in August is 77%.Rainfall
In Portland, during August, the rain falls for 18.8 days and regularly aggregates up to 4.8" (122mm) of precipitation. In Portland, during the entire year, the rain falls for 177.4 days and collects up to 44.61" (1133mm) of precipitation.Snowfall
In Portland, Tennessee, snow does not fall in May through October.Daylight
The average length of the day in August is 13h and 31min.On the first day of the month, sunrise is at 5:52 am and sunset at 7:51 pm. On the last day of August, sunrise is at 6:17 am and sunset at 7:15 pm CDT.
Sunshine
In Portland, the average sunshine in August is 10h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 6 during August leads to these instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is August in Portland?
What is the average humidity in August in Portland?
How many days does it rain in August in Portland?
When it does not snow in Portland?
How many hours of daylight does Portland have in August?
What time are sunrise and sunset in August in Portland?
How long on average sun shines in August in Portland?
What is the month with the highest UV index in Portland?
What is the UV index reading in August in Portland?
Average temperature in August
Portland, TN
- Average high temperature in August: 85.6°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (42.8°F).
- Average low temperature in August: 66.9°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in August
Portland, 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
Portland, TN
- Average wind speed in August: 4.8mph
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 (4.8mph).
Average humidity in August
Portland, TN
- Average humidity in August: 77%
The months with the highest relative humidity are March, May and December (79%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in August
Portland, TN
- Average rainfall in August: 4.8"
The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is November (2.56").
Average rainfall days in August
Portland, TN
- Average rainfall days in August: 18.8 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
Portland, TN
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Portland, TN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (5.3 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
Portland, 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 0min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in August
Portland, TN
- Average sunshine days in August: 10.8 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in August
Portland, 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
Portland, TN
- Average cloud cover in August: 33
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in August
Portland, TN
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, May and July (5mi).
Portland, Tennessee, USA
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