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
As Decatur welcomes August, the average high-temperature is noted at a still hot 86.9°F (30.5°C), closely aligning with the preceding month. Decatur anticipates a stark contrast in temperature during August nights, with an average low of 65.1°F (18.4°C).Heat index
August's mean heat index is estimated at a torrid 100.4°F (38°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Remember that heat index calculations are made for conditions in the shade with light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
June, August, October and November, with an average relative humidity of 75%, are the least humid months.Rainfall
In Decatur, Tennessee, in August, it is raining for 17.7 days, with typically 3.39" (86mm) of accumulated precipitation. In Decatur, Tennessee, during the entire year, the rain falls for 171.8 days and collects up to 41.81" (1062mm) of precipitation.Snowfall
May through October are months without snowfall in Decatur.Daylight
In Decatur, Tennessee, the average length of the day in August is 13h and 28min.On the first day of August, sunrise is at 6:48 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 8:07 pm EDT.
Sunshine
The average sunshine in August in Decatur is 9.6h.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 risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 6 in August translates into these instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Decatur during August?
What are the least humid months in Decatur?
What is the average humidity in August in Decatur?
How much does it rain in Decatur in August?
When it does not snow in Decatur?
What is the average length of the day in August in Decatur?
When is the sunrise / sunset in August in Decatur?
How many hours of sunshine does Decatur have in August?
When is the highest UV index in Decatur?
What is the UV index reading in August in Decatur?
Average temperature in August
Decatur, TN
- Average high temperature in August: 86.9°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in August: 65.1°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in August
Decatur, TN
- Average pressure in August: 30.01"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in August
Decatur, TN
- Average wind speed in August: 3.9mph
The windiest months (with the highest average wind speed) are February, March and April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).
Average humidity in August
Decatur, TN
- Average humidity in August: 75%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August, October and November (75%).
Average rainfall in August
Decatur, TN
- Average rainfall in August: 3.39"
The wettest months (with the highest rainfall) are July and December (4.29").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in August
Decatur, TN
- Average rainfall days in August: 17.7 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in August
Decatur, TN
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Decatur, 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 and September (0 days).
Average daylight in August /
Average sunshine in August
Decatur, 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: 9h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in August
Decatur, TN
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in August
Decatur, 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
Decatur, TN
- Average cloud cover in August: 31
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in August
Decatur, TN
- Average visibility in August: 6mi
The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and March (5mi).
Decatur, Tennessee, USA
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