July weather forecast
Lafayette, LA

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

The shift into July uncovers an average high-temperature of a still hot 89.8°F (32.1°C), subtly different from the previous month. In Lafayette, an average temperature of 74.7°F (23.7°C) is noted during July nights.

Heat index

In July, the average heat index is evaluated at a life-threatening hot 113°F (45°C). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In July, the average relative humidity is 80%.

Rainfall

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

Snowfall

February through December are months without snowfall.

Daylight

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

Sunshine

The average sunshine in July is 10.4h.

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 unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 7 in July translates into this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.