July weather forecast
Lafayette, LA

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A monument and trees in the tranquil Lafayette Square, Louisiana
A monument and trees in the tranquil Lafayette Square, Louisiana

Weather in July

July is the season of high heat in Lafayette with the temperatures soaring to a peak of 89.8°F (32.1°C). Despite the heat, there is a significant decrease in wind speed from 5.9mph (9.5km/h) to 5.3mph (8.5km/h), compared to June. The onset of summer is marked by frequent rain showers, adding a touch of freshness to the environment. Even though conditions can be lingeringly hot, the timely showers mitigate the severity. Be prepared for a mix of hot and rainy weather if planning a trip during July.

Temperature

Lafayette records an average high-temperature of a still hot 89.8°F (32.1°C) in July, maintaining a close correlation with June's 89.2°F (31.8°C). Throughout July, Lafayette witnesses a nighttime temperature average of 74.7°F (23.7°C).

Heat index

The heat index value for July is computed to be a blazing hot 113°F (45°C). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
Consider that heat index readings are for situations in the shade and light wind. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. 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 extremely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In July, the average relative humidity in Lafayette is 80%.

Rainfall

In Lafayette, in July, it is raining for 17.9 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, in Lafayette, there are 143.3 rainfall days, and 17.91" (455mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Lafayette, Louisiana, the average length of the day in July is 13h and 52min.
On the first day of July in Lafayette, Louisiana, sunrise is at 6:10 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:02 pm CDT.

Sunshine

In July, the average sunshine in Lafayette is 10.4h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during July translates into the following guidance:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

How hot does it get in Lafayette in July?

The high-temperature, in July, in Lafayette, is 89.8°F (32.1°C), while the low-temperature averages to 74.7°F (23.7°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 113°F (45°C).

What is the average humidity in July in Lafayette?

In July, the average relative humidity is 80%.

How much does it rain in Lafayette in July?

In Lafayette, in July, it is raining for 17.9 days, with typically 2.52" (64mm) of accumulated precipitation.

When it does not snow in Lafayette?

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

How many hours of daylight does Lafayette have in July?

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

When are sunrise and sunset in July in Lafayette?

In July, on the first day of the month, sunrise is at 6:10 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:02 pm CDT.

How many hours of sunshine does Lafayette have in July?

In July, the average sunshine duration is 10.4h.

When is the highest UV index in Lafayette?

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

What is the UV index intensity in July in Lafayette?

In Lafayette, Louisiana, the average daily maximum UV index in July is 7. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
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 July
Lafayette, LA

Average temperature in July - Lafayette, 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 (58.8°F).

  • Average low temperature in July: 74.7°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in July
Lafayette, LA

Average pressure in July - Lafayette, LA
  • Average pressure in July: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in July
Lafayette, LA

Average wind speed in July - Lafayette, LA
  • Average wind speed in July: 5.3mph

The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

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Average humidity in July
Lafayette, LA

Average humidity in July - Lafayette, LA
  • Average humidity in July: 80%

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

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Average rainfall in July
Lafayette, LA

Average rainfall in July - Lafayette, LA
  • Average rainfall in July: 2.52"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is March (0.83").

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Average rainfall days in July
Lafayette, LA

Average rainfall days in July - Lafayette, LA
  • Average rainfall days in July: 17.9 days

The month with the highest number of rainy days is August (20 days).
The months with the least rainy days are January and November (7.8 days).

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Average snowfall days in July
Lafayette, LA

Average snowfall days in July - Lafayette, LA
  • Average snowfall days in July: 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 July /
Average sunshine in July
Lafayette, LA

Average daylight in July / Average sunshine in July - Lafayette, 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 2min

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 0min).

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Average sunshine days in July
Lafayette, LA

Average sunshine days in July - Lafayette, LA
  • Average sunshine days in July: 9.6 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (8 days).

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Average UV index in July
Lafayette, LA

Average UV index in July - Lafayette, 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
Lafayette, LA

Average cloud cover in July - Lafayette, LA
  • Average cloud cover in July: 30

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 25).

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Average visibility in July
Lafayette, LA

Average visibility in July - Lafayette, 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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Lafayette, Louisiana, USA

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