July weather forecast
Mermentau, LA

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Weather in July

July, like June, is a hot summer month in Mermentau, Louisiana, with temperature in the range of an average high of 89.8°F (32.1°C) and an average low of 75.2°F (24°C).

Temperature

Mermentau marks the arrival of July with an average high-temperature of a still hot 89.8°F (32.1°C), hardly different from June's 89.2°F (31.8°C). July brings an average low-temperature of 75.2°F (24°C) to Mermentau.

Heat index

In July, the average heat index is computed to be a blistering 111.2°F (44°C). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Mermentau, the average relative humidity in July is 79%.

Rainfall

In July, the rain falls for 17.1 days. Throughout July, 2.64" (67mm) of precipitation is accumulated. In Mermentau, during the entire year, the rain falls for 156.6 days and collects up to 26.34" (669mm) of precipitation.

Snowfall

February through December are months without snowfall in Mermentau.

Daylight

In Mermentau, the average length of the day in July is 13h and 52min.
On the first day of July, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:04 pm CDT.

Sunshine

In July, the average sunshine is 10.5h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In July, the maximum UV index of 7 suggests these recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

How hot does it get in Mermentau in July?

During July, Mermentau experiences an average high-temperature of 89.8°F (32.1°C) and a low-temperature of 75.2°F (24°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in July is computed to be 111.2°F (44°C).

What is the average humidity in July in Mermentau?

In Mermentau, the average relative humidity in July is 79%.

How much does it rain in Mermentau in July?

In Mermentau, Louisiana, during July, the rain falls for 17.1 days and regularly aggregates up to 2.64" (67mm) of precipitation.

When it does not snow in Mermentau?

In Mermentau, Louisiana, snow does not fall in February through December.

How many hours of daylight does Mermentau have in July?

In Mermentau, Louisiana, the average day length in July is 13h and 52min.

When is the sunrise / sunset in July in Mermentau?

In July, on the first day of the month, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, in Mermentau, sunrise is at 6:28 am and sunset at 8:04 pm CDT.

How many hours of sunshine does Mermentau have in July?

In July, the average sunshine duration in Mermentau is 10.5h.

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

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

What is the UV index reading in July in Mermentau?

The average daily maximum UV index in July in Mermentau 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 July
Mermentau, LA

Average temperature in July - Mermentau, LA
  • Average high temperature in July: 89.8°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in July: 75.2°F

The months with the highest average low temperature are July and August (75.2°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in July
Mermentau, LA

Average pressure in July - Mermentau, LA
  • Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in July
Mermentau, LA

Average wind speed in July - Mermentau, LA
  • Average wind speed in July: 5.9mph

The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in July
Mermentau, LA

Average humidity in July - Mermentau, LA
  • Average humidity in July: 79%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in July
Mermentau, LA

Average rainfall in July - Mermentau, LA
  • Average rainfall in July: 2.64"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in July
Mermentau, LA

Average rainfall days in July - Mermentau, LA
  • Average rainfall days in July: 17.1 days

The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in July
Mermentau, LA

Average snowfall in July - Mermentau, LA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in July
Mermentau, LA

Average snowfall days in July - Mermentau, LA
  • Average snowfall days in July: 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).

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Average daylight in July /
Average sunshine in July
Mermentau, LA

Average daylight in July / Average sunshine in July - Mermentau, LA
  • Average daylight in July: 13h and 5min

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 July: 10h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in July
Mermentau, LA

Average sunshine days in July - Mermentau, LA
  • Average sunshine days in July: 11.2 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is August (9.9 days).

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Average UV index in July
Mermentau, LA

Average UV index in July - Mermentau, LA
  • Average UV index in July: 7

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

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Average cloud cover in July
Mermentau, LA

Average cloud cover in July - Mermentau, LA
  • Average cloud cover in July: 29

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

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Average visibility in July
Mermentau, LA

Average visibility in July - Mermentau, LA
  • Average visibility in July: 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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Mermentau, Louisiana, USA

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