May weather forecast
Roy, FL

The last month of the spring, May, is a hot month in Roy, Florida, with an average temperature ranging between min 67.3°F (19.6°C) and max 86.4°F (30.2°C).

Temperature

With May's arrival, Roy's weather records an average high-temperature of a hot 86.4°F (30.2°C), marking little difference from April's 81.7°F (27.6°C). In May, Roy encounters an average low-temperature of 67.3°F (19.6°C) during the night.

Heat index

May's average heat index is estimated at a torrid 96.8°F (36°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Roy, the average relative humidity in May is 72%.

Rainfall

In May, the rain falls for 10.7 days. Throughout May, 0.91" (23mm) of precipitation is accumulated. Throughout the year, there are 138.3 rainfall days, and 12.76" (324mm) of precipitation is accumulated.

Snowfall

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

Daylight

In May, the average length of the day is 13h and 39min.
On the first day of the month, sunrise is at 6:42 am and sunset at 8:03 pm. On the last day of May, sunrise is at 6:26 am and sunset at 8:21 pm EDT.

Sunshine

In May, the average sunshine is 10.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 7 during May, leads to the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.