May weather forecast
Zachary, LA

May is the harbinger of summer in Zachary, Louisiana, and presents the highest increase in temperatures since the beginning of the year. There are clear, sunny skies for most of the day and it is a good time for outdoor activities. May also witnesses the beginning of rainier days in the horizon, hinting the oncoming presence of summer showers. Ahead, June continues the rising trend in temperature and humidity. This month reaches a high peak of 84.7°F (29.3°C), and rainfall begins to escalate up to 2.44" (62mm).

Temperature

With the beginning of May, Zachary's average high-temperature sees a minor increase, transitioning from 78.3°F (25.7°C) in April to a still moderately hot 84.7°F (29.3°C). In Zachary, May is marked by an average low-temperature of 64.9°F (18.3°C).

Heat index

Throughout May, the heat index is calculated to be a sweltering 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Zachary, the average relative humidity in May is 77%.

Rainfall

In Zachary, Louisiana, in May, it is raining for 14 days, with typically 2.44" (62mm) of accumulated precipitation. In Zachary, Louisiana, during the entire year, the rain falls for 175 days and collects up to 28.74" (730mm) of precipitation.

Snowfall

February through November are months without snowfall in Zachary.

Daylight

In May, the average length of the day in Zachary is 13h and 43min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:43 pm. On the last day of May, sunrise is at 6:02 am and sunset at 8:02 pm CDT.

Sunshine

In Zachary, the average sunshine in May is 9.8h.

UV index

May through July, with an average maximum UV index of 7, are months with the highest UV index in Zachary, Louisiana. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, a daily maximum UV index of 7 leads to the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.