August weather forecast
Grayson Valley, AL

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Weather in August

The last month of the summer, August, is another tropical month in Grayson Valley, Alabama, with an average temperature fluctuating between 69.8°F (21°C) and 89.2°F (31.8°C).

Temperature

August's onset records an average high-temperature of a still tropical 89.2°F (31.8°C), a near match to July's 90.1°F (32.3°C). Grayson Valley, during August nights, observes an average temperature of 69.8°F (21°C).

Heat index

Throughout August, the heat index is computed to be a blistering 105.8°F (41°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in August is 74%.

Rainfall

August is the month with the most rainfall. Rain falls for 17.8 days and accumulates 2.24" (57mm) of precipitation.

Snowfall

April through October are months without snowfall in Grayson Valley.

Daylight

The average length of the day in August is 13h and 22min.
On the first day of August, sunrise is at 5:59 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:12 pm CDT.

Sunshine

In Grayson Valley, Alabama, the average sunshine in August is 10.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

How hot does it get in Grayson Valley in August?

In August, in Grayson Valley, the average high-temperature is 89.2°F (31.8°C), and the average low-temperature is 69.8°F (21°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in August is computed to be 105.8°F (41°C).

What is the average humidity in August in Grayson Valley?

In August, the average relative humidity in Grayson Valley, Alabama, is 74%.

What is the rainiest month in Grayson Valley?

The month with the most rainfall in Grayson Valley is August, when the rain falls for 17.8 days and typically aggregates up to 2.24" (57mm) of precipitation.

How many days does it rain in August in Grayson Valley?

In Grayson Valley, Alabama, during August, the rain falls for 17.8 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow in Grayson Valley?

In Grayson Valley, snow does not fall in April through October.

What is the average length of the day in August in Grayson Valley?

In Grayson Valley, Alabama, the average day length in August is 13h and 22min.

When are sunrise and sunset in August in Grayson Valley?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 7:46 pm. On the last day of the month, in Grayson Valley, Alabama, sunrise is at 6:20 am and sunset at 7:12 pm CDT.

How many hours of sunshine does Grayson Valley have in August?

The average sunshine duration in August in Grayson Valley, Alabama, is 10.2h.

What are the months with the highest UV index in Grayson Valley?

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

How high is the UV index in August in Grayson Valley?

In Grayson Valley, Alabama, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Grayson Valley, AL

Average temperature in August - Grayson Valley, AL
  • Average high temperature in August: 89.2°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.7°F).

  • Average low temperature in August: 69.8°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).

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Average pressure in August
Grayson Valley, AL

Average pressure in August - Grayson Valley, 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
Grayson Valley, AL

Average wind speed in August - Grayson Valley, AL
  • Average wind speed in August: 4.3mph

The windiest months (with the highest average wind speed) are January and February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

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Average humidity in August
Grayson Valley, AL

Average humidity in August - Grayson Valley, AL
  • Average humidity in August: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Grayson Valley, AL

Average rainfall in August - Grayson Valley, AL
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.06").

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Average rainfall days in August
Grayson Valley, AL

Average rainfall days in August - Grayson Valley, AL
  • Average rainfall days in August: 17.8 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (7.9 days).

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Average snowfall in August
Grayson Valley, AL

Average snowfall in August - Grayson Valley, AL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.2").
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
Grayson Valley, AL

Average snowfall days in August - Grayson Valley, AL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1 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
Grayson Valley, AL

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in August
Grayson Valley, AL

Average sunshine days in August - Grayson Valley, AL
  • Average sunshine days in August: 10.5 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.6 days).

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Average UV index in August
Grayson Valley, AL

Average UV index in August - Grayson Valley, AL
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in August
Grayson Valley, AL

Average cloud cover in August - Grayson Valley, AL
  • Average cloud cover in August: 32

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
Grayson Valley, AL

Average visibility in August - Grayson Valley, 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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Grayson Valley, Alabama, USA

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