August weather forecast
Decatur, AL

Weather in August

The last month of the summer, August, is also a hot month in Decatur, Alabama, with an average temperature varying between 68.9°F (20.5°C) and 88.2°F (31.2°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still tropical 88.2°F (31.2°C). In August, the average low-temperature is 68.9°F (20.5°C).

Heat index

The average heat index in August is computed to be a very hot 103.6°F (39.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, differences in body mass, height, and shape, pregnancy, and metabolic differences affect individual temperature impact. 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in August is 75%.

Rainfall

In Decatur, during August, the rain falls for 19 days and regularly aggregates up to 3.82" (97mm) of precipitation. In Decatur, during the entire year, the rain falls for 177.6 days and collects up to 43.11" (1095mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in August in Decatur is 13h and 25min.
On the first day of August in Decatur, sunrise is at 5:58 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:15 pm CDT.

Sunshine

The average sunshine in August in Decatur is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Decatur?

The average high-temperature, in August, in Decatur, Alabama, is 88.2°F (31.2°C), while the average low-temperature is 68.9°F (20.5°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 103.6°F (39.8°C).

What is the average humidity in August in Decatur?

In August, the average relative humidity in Decatur is 75%.

How many days does it rain in August in Decatur?

In August, in Decatur, the rain falls for 19 days. Throughout August, 3.82" (97mm) of precipitation is accumulated.

When it does not snow in Decatur?

April through October are months without snowfall in Decatur, Alabama.

What is the average length of the day in August in Decatur?

The average day length in August in Decatur, Alabama, is 13h and 25min.

When is the sunrise / sunset in August in Decatur?

In August, on the first day of the month, sunrise is at 5:58 am and sunset at 7:50 pm. On the last day of the month, in Decatur, sunrise is at 6:20 am and sunset at 7:15 pm CDT.

How many hours of sunshine does Decatur have in August?

The average sunshine duration in August in Decatur is 10.1h.

When is the highest UV index in Decatur?

The months with the highest UV index in Decatur are May through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Decatur?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Decatur, AL

Average temperature in August - Decatur, AL
  • Average high temperature in August: 88.2°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (47.5°F).

  • Average low temperature in August: 68.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).

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Average pressure in August
Decatur, AL

Average pressure in August - Decatur, AL
  • 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 (29.98"Hg).

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Average wind speed in August
Decatur, AL

Average wind speed in August - Decatur, AL
  • Average wind speed in August: 4.9mph

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

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Average humidity in August
Decatur, AL

Average humidity in August - Decatur, AL
  • Average humidity in August: 75%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Decatur, AL

Average rainfall in August - Decatur, AL
  • Average rainfall in August: 3.82"

The wettest month (with the highest rainfall) is December (4.45").
The driest months (with the least rainfall) are September and November (2.48").

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Average rainfall days in August
Decatur, AL

Average rainfall days in August - Decatur, AL
  • Average rainfall days in August: 19 days

The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (10.4 days).

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Average snowfall in August
Decatur, AL

Average snowfall in August - Decatur, AL
  • Average snowfall in August: 0"

The months with the highest snowfall are January and February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Decatur, AL

Average snowfall days in August - Decatur, AL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Decatur, AL

Average daylight in August / Average sunshine in August - Decatur, AL
  • Average daylight in August: 13h and 25min

The month with the longest days is June (Average daylight: 14h and 26min).
The month with the shortest days is December (Average daylight: 9h and 53min).

  • Average sunshine in August: 10h and 6min

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).

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Average sunshine days in August
Decatur, AL

Average sunshine days in August - Decatur, AL
  • Average sunshine days in August: 9.3 days

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index in August
Decatur, AL

Average UV index in August - Decatur, AL
  • 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 and December (UV index 2).

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Average cloud cover in August
Decatur, AL

Average cloud cover in August - Decatur, AL
  • Average cloud cover in August: 32

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in August
Decatur, AL

Average visibility in August - Decatur, AL
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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