August weather forecast
Mountain Brook, AL

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Weather in August

In August, Mountain Brook experiences a slight dip in temperature, offering a gentle respite from July's heat. Nevertheless, the temperature remains high enough to maintain the summer's character. The month receives a significant amount of rainfall, nearly as much as observed in June with 1.89" (48mm). As people bask in the waning days of summer, the month maintains its lively atmosphere with outdoor picnics, hikes, and music festivals.

Temperature

Mountain Brook's average high-temperature marks a still tropical 90.1°F (32.3°C) with the advent of August, closely mirroring that of the preceding month. During August in Mountain Brook, the average low-temperature is recorded at a pleasant 70.9°F (21.6°C).

Heat index

During August, the heat index is appraised at a blistering 107.6°F (42°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The average relative humidity in August is 72%.

Rainfall

In Mountain Brook, Alabama, in August, during 15.7 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 143.1 rainfall days, and 18.58" (472mm) of precipitation is accumulated.

Snowfall

In Mountain Brook, snow does not fall in April through October.

Daylight

In August, the average length of the day is 13h and 22min.
On the first day of August, sunrise is at 6:00 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:13 pm CDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 7 in August transforms into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

How hot is it in Mountain Brook in August?

During August, Mountain Brook experiences an average high-temperature of 90.1°F (32.3°C) and a low-temperature of 70.9°F (21.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is appraised at 107.6°F (42°C).

What is the average humidity in August in Mountain Brook?

The average relative humidity in August is 72%.

How many days does it rain in August in Mountain Brook?

In August, in Mountain Brook, Alabama, the rain falls for 15.7 days. Throughout August, 1.89" (48mm) of precipitation is accumulated.

When it does not snow in Mountain Brook?

In Mountain Brook, Alabama, snow does not fall in April through October.

What is the average length of the day in August in Mountain Brook?

In August, the average day length is 13h and 22min.

When is the sunrise / sunset in August in Mountain Brook?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 7:46 pm. On the last day of the month, in Mountain Brook, Alabama, sunrise is at 6:20 am and sunset at 7:13 pm CDT.

How long on average sun shines in August in Mountain Brook?

In Mountain Brook, Alabama, the average sunshine duration in August is 10.3h.

What is the month with the highest UV index in Mountain Brook?

The months with the highest UV index in Mountain Brook, Alabama, are July and August, with an average maximum UV index of 7.

What is the UV index intensity in August in Mountain Brook?

In Mountain Brook, Alabama, the average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Mountain Brook, AL

Average temperature in August - Mountain Brook, AL
  • Average high temperature in August: 90.1°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.7°F).

  • Average low temperature in August: 70.9°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

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Average pressure in August
Mountain Brook, AL

Average pressure in August - Mountain Brook, 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
Mountain Brook, AL

Average wind speed in August - Mountain Brook, AL
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in August
Mountain Brook, AL

Average humidity in August - Mountain Brook, AL
  • Average humidity in August: 72%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Mountain Brook, AL

Average rainfall in August - Mountain Brook, AL
  • Average rainfall in August: 1.89"

The wettest month (with the highest rainfall) is June (1.97").
The driest month (with the least rainfall) is November (1.02").

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Average rainfall days in August
Mountain Brook, AL

Average rainfall days in August - Mountain Brook, AL
  • Average rainfall days in August: 15.7 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (7.9 days).

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Average snowfall in August
Mountain Brook, AL

Average snowfall in August - Mountain Brook, AL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.12").
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
Mountain Brook, AL

Average snowfall days in August - Mountain Brook, AL
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Mountain Brook, AL

Average daylight in August / Average sunshine in August - Mountain Brook, AL
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in August
Mountain Brook, AL

Average sunshine days in August - Mountain Brook, AL
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (11.1 days).

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Average UV index in August
Mountain Brook, AL

Average UV index in August - Mountain Brook, AL
  • Average UV index in August: 7

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in August
Mountain Brook, AL

Average cloud cover in August - Mountain Brook, AL
  • Average cloud cover in August: 31

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 30).

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Average visibility in August
Mountain Brook, AL

Average visibility in August - Mountain Brook, 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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Mountain Brook, Alabama, USA

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