August weather forecast
Grimes, LA

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Weather in August

The last month of the summer, August, is also a hot month in Grimes, Louisiana, with an average temperature fluctuating between 90.3°F (32.4°C) and 72.7°F (22.6°C).

Temperature

The transition from July to August brings an average high-temperature of a still hot 90.3°F (32.4°C), barely different from July's 91°F (32.8°C). An average low-temperature of 72.7°F (22.6°C) is recorded during the nights in August.

Heat index

For most parts of August, the heat index is appraised at an extremely hot 111.2°F (44°C). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in August is 75%.

Rainfall

In Grimes, in August, it is raining for 16.3 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, there are 158.9 rainfall days, and 37.28" (947mm) of precipitation is accumulated.

Snowfall

In Grimes, snow does not fall in April through December.

Daylight

In Grimes, the average length of the day in August is 13h and 19min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:02 pm. On the last day of August, in Grimes, Louisiana, sunrise is at 6:39 am and sunset at 7:30 pm CDT.

Sunshine

In Grimes, the average sunshine in August is 10.5h.

UV index

The months with the highest UV index in Grimes are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in August suggests the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

How hot is it in Grimes in August?

Grimes in August has an average high-temperature of 90.3°F (32.4°C) and an average low-temperature of 72.7°F (22.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is appraised at 111.2°F (44°C).

What is the average humidity in August in Grimes?

The average relative humidity in August in Grimes is 75%.

How many days does it rain in August in Grimes?

In Grimes, in August, it is raining for 16.3 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in Grimes?

April through December are months without snowfall in Grimes.

How many hours of daylight does Grimes have in August?

In Grimes, the average day length in August is 13h and 19min.

When is the sunrise / sunset in August in Grimes?

In August, on the first day of the month, sunrise is at 6:19 am and sunset at 8:02 pm. On the last day of the month, in Grimes, Louisiana, sunrise is at 6:39 am and sunset at 7:30 pm CDT.

How long on average sun shines in August in Grimes?

In August, the average sunshine duration is 10.5h.

When is the highest UV index in Grimes?

The months with the highest UV index in Grimes are June through August, with an average maximum UV index of 7.

How high is the UV index in August in Grimes?

In August, the average daily maximum UV index in Grimes is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's 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
Grimes, LA

Average temperature in August - Grimes, LA
  • Average high temperature in August: 90.3°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (53.1°F).

  • Average low temperature in August: 72.7°F

The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

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Average pressure in August
Grimes, LA

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in August
Grimes, LA

Average wind speed in August - Grimes, LA
  • Average wind speed in August: 5.4mph

The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in August
Grimes, LA

Average humidity in August - Grimes, LA
  • Average humidity in August: 75%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in August
Grimes, LA

Average rainfall in August - Grimes, LA
  • Average rainfall in August: 2.48"

The wettest month (with the highest rainfall) is April (4.41").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in August
Grimes, LA

Average rainfall days in August - Grimes, LA
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (9.5 days).

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Average snowfall in August
Grimes, LA

Average snowfall in August - Grimes, LA
  • Average snowfall in August: 0"

The months with the highest snowfall are January and February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in August
Grimes, LA

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

The month with the highest number of snowfall days is January (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
Grimes, LA

Average daylight in August / Average sunshine in August - Grimes, LA
  • 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 3min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in August
Grimes, LA

Average sunshine days in August - Grimes, LA
  • Average sunshine days in August: 12.9 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (12.2 days).

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Average UV index in August
Grimes, LA

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

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

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Average cloud cover in August
Grimes, LA

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

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 25).

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Average visibility in August
Grimes, LA

Average visibility in August - Grimes, 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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Grimes, Louisiana, USA

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