August weather forecast
Grand River, LA

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Weather in August

August, the last month of the summer in Grand River, is another hot month, with an average temperature ranging between max 91.2°F (32.9°C) and min 74.5°F (23.6°C).

Temperature

Grand River's peak temperatures tend to occur in July and August, with an average high-temperature of 91.2°F (32.9°C).

Heat index

The heat index value during August is estimated at a blazing hot 116.6°F (47°C). Remain cautious: Heat cramps along with heat exhaustion are foreseeable. Ongoing activity may precipitate heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In August, the rain falls for 20.9 days. Throughout August, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 148.6 rainfall days, and 15.51" (394mm) of precipitation is accumulated.

Snowfall

In Grand River, snow does not fall in February through December.

Daylight

In Grand River, Louisiana, the average length of the day in August is 13h and 13min.
On the first day of August, sunrise is at 6:24 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 7:29 pm CDT.

Sunshine

The average sunshine in August is 10.1h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Grand River. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during August translates into these guidelines:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

During July and August, Grand River experiences its peak temperatures, averaging a high-temperature of 91.2°F (32.9°C).

How hot does it get in August?

In August, the average high-temperature and low-temperature are 91.2°F (32.9°C) and 74.5°F (23.6°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is estimated at 116.6°F (47°C).

What is the average humidity in August?

The average relative humidity in August is 79%.

How much does it rain in Grand River in August?

In August, the rain falls for 20.9 days. Throughout August, 2.01" (51mm) of precipitation is accumulated.

When it does not snow?

February through December are months without snowfall.

How many hours of daylight does Grand River have in August?

In Grand River, the average day length in August is 13h and 13min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:24 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 7:29 pm CDT.

How long on average sun shines in August?

The average sunshine duration in August is 10.1h.

When is the highest UV index?

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

What is the UV index reading in August?

The average daily maximum UV index in August in Grand River is 7. A UV Index reading of 6 to 7 represents a high health threat 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
Grand River, LA

Average temperature in August - Grand River, LA
  • Average high temperature in August: 91.2°F

The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in August: 74.5°F

The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).

Average pressure in August
Grand River, LA

Average pressure in August - Grand River, LA
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).

Average wind speed in August
Grand River, LA

Average wind speed in August - Grand River, LA
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in August
Grand River, LA

Average humidity in August - Grand River, LA
  • Average humidity in August: 79%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (73%).

Average rainfall in August
Grand River, LA

Average rainfall in August - Grand River, LA
  • Average rainfall in August: 2.01"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is March (0.67").

Average rainfall days in August
Grand River, LA

Average rainfall days in August - Grand River, LA
  • Average rainfall days in August: 20.9 days

The month with the highest number of rainy days is August (20.9 days).
The month with the least rainy days is November (7.1 days).

Average snowfall in August
Grand River, LA

Average snowfall in August - Grand River, LA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in August
Grand River, LA

Average snowfall days in August - Grand River, LA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in August /
Average sunshine in August
Grand River, LA

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

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in August
Grand River, LA

Average sunshine days in August - Grand River, LA
  • Average sunshine days in August: 7.3 days

The month with the most sunshine days is November (21.4 days).
The months with the least sunshine days are July and August (7.3 days).

Average UV index in August
Grand River, LA

Average UV index in August - Grand River, LA
  • Average UV index in August: 7

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

Average cloud cover in August
Grand River, LA

Average cloud cover in August - Grand River, LA
  • Average cloud cover in August: 31

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 27).

Average visibility in August
Grand River, LA

Average visibility in August - Grand River, LA
  • Average visibility in August: 5mi

The months with the highest visibility are January, February, June, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July, August and September (5mi).

Grand River, Louisiana, USA

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