May weather forecast
Riverdale, FL

The last month of the spring, May, is a tropical month in Riverdale, Florida, with an average temperature varying between 86.2°F (30.1°C) and 67.8°F (19.9°C).

Temperature

As Riverdale transitions from April to May, the average high-temperatures adjust to a hot 86.2°F (30.1°C), nearly the same as the previous 82°F (27.8°C). Riverdale experiences a consistent average temperature of 67.8°F (19.9°C) throughout the nights in May.

Heat index

During May, the heat index is computed to be a very hot 96.8°F (36°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Riverdale, the average relative humidity in May is 73%.

Rainfall

In Riverdale, in May, during 12.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Riverdale, during the entire year, the rain falls for 140.2 days and collects up to 15" (381mm) of precipitation.

Daylight

In May, the average length of the day in Riverdale is 13h and 35min.
On the first day of the month, sunrise is at 6:47 am and sunset at 8:04 pm. On the last day of May, sunrise is at 6:31 am and sunset at 8:21 pm EDT.

Sunshine

The average sunshine in May is 10.6h.

UV index

May through September, 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 threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 7 in May, converts into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.