August weather forecast
Harvey, LA

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Weather in August

The last month of the summer, August, is another hot month in Harvey, Louisiana, with an average temperature fluctuating between 79.5°F (26.4°C) and 89.4°F (31.9°C).

Temperature

July and August are identified as the warmest months, with an average high-temperature of 89.4°F (31.9°C).

Heat index

For August, the heat index is evaluated at a blisteringly hot 105.8°F (41°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. 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 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The average relative humidity in August in Harvey is 73%.

Rainfall

In Harvey, Louisiana, in August, it is raining for 17.2 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.

Snowfall

In Harvey, snow does not fall in February through December.

Daylight

In August, the average length of the day in Harvey is 13h and 11min.
On the first day of August in Harvey, sunrise is at 6:20 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:23 pm CDT.

Sunshine

The average sunshine in August is 10.6h.

UV index

May through September, with an average maximum UV index of 7, 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 average individuals.
Note: The maximum daily UV index of 7 in August interprets into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What time of the year is the hottest in Harvey?

The months of July and August see the peak of Harvey's temperatures, averaging a high of 89.4°F (31.9°C).

How hot is August in Harvey?

The high-temperature during August is 89.4°F (31.9°C) and the low-temperature is 79.5°F (26.4°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 105.8°F (41°C).

What is the average humidity in August in Harvey?

The average relative humidity in August in Harvey, Louisiana, is 73%.

How many days does it rain in August in Harvey?

In Harvey, Louisiana, in August, during 17.2 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

When it does not snow in Harvey?

February through December are months without snowfall in Harvey, Louisiana.

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

In August, the average day length is 13h and 11min.

What time are sunrise and sunset in August in Harvey?

In August, on the first day of the month, sunrise is at 6:20 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:23 pm CDT.

How many hours of sunshine does Harvey have in August?

The average sunshine duration in August in Harvey is 10.6h.

What is the month with the highest UV index in Harvey?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

How high is the UV index in August in Harvey?

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

Average temperature in August
Harvey, LA

Average temperature in August - Harvey, LA
  • Average high temperature in August: 89.4°F

The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in August: 79.5°F

The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).

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Average pressure in August
Harvey, LA

Average pressure in August - Harvey, LA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).

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Average wind speed in August
Harvey, LA

Average wind speed in August - Harvey, LA
  • Average wind speed in August: 6.7mph

The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in August
Harvey, LA

Average humidity in August - Harvey, LA
  • Average humidity in August: 73%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Harvey, LA

Average rainfall in August - Harvey, LA
  • Average rainfall in August: 1.46"

The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").

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Average rainfall days in August
Harvey, LA

Average rainfall days in August - Harvey, LA
  • Average rainfall days in August: 17.2 days

The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).

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Average snowfall days in August
Harvey, LA

Average snowfall days in August - Harvey, LA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in August /
Average sunshine in August
Harvey, LA

Average daylight in August / Average sunshine in August - Harvey, LA
  • Average daylight in August: 13h and 1min

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

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in August
Harvey, LA

Average sunshine days in August - Harvey, LA
  • Average sunshine days in August: 8.9 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).

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Average UV index in August
Harvey, LA

Average UV index in August - Harvey, LA
  • Average UV index in August: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in August
Harvey, LA

Average cloud cover in August - Harvey, LA
  • Average cloud cover in August: 28

The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).

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Average visibility in August
Harvey, LA

Average visibility in August - Harvey, LA
  • 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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Harvey, Louisiana, USA

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