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 onset of May, Zachary's average high-temperature sees a modest rise, moving from April's warm 78.3°F (25.7°C) to a still moderately hot 84.7°F (29.3°C). May nights are marked by an average temperature drop to a refreshing 64.9°F (18.3°C).

Heat index

The heat index value during May is estimated at a torrid 95°F (35°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. 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. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In May, the average relative humidity is 77%.

Rainfall

In Zachary, during May, the rain falls for 14 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Zachary, during the entire year, the rain falls for 175 days and collects up to 28.74" (730mm) of precipitation.

Snowfall

In Zachary, snow does not fall in February through November.

Daylight

In May, the average length of the day 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

The average sunshine in May is 9.8h.

UV index

The months with the highest UV index are May through July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.