May weather forecast
Rex, FL

The last month of the spring, May, is a hot month in Rex, Florida, with an average temperature fluctuating between 66.7°F (19.3°C) and 86°F (30°C).

Temperature

May's onset records an average high-temperature of a hot 86°F (30°C), a near match to April's 81.1°F (27.3°C). Rex temperatures generally rest at a low of 66.7°F (19.3°C) during the May nights.

Heat index

The heat index for May is appraised at a fiery hot 96.8°F (36°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

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

Rainfall

In Rex, during May, the rain falls for 13.2 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Rex, during the entire year, the rain falls for 154.9 days and collects up to 22.28" (566mm) of precipitation.

Daylight

In Rex, Florida, the average length of the day in May is 13h and 39min.
On the first day of the month, sunrise is at 6:45 am and sunset at 8:05 pm. On the last day of May, in Rex, Florida, sunrise is at 6:28 am and sunset at 8:23 pm EDT.

Sunshine

The months with the most sunshine are May and July, with an average of 10.5h of sunshine.

UV index

May through August, 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 health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in May interprets into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.