May weather forecast
Alton, FL

May, the last month of the spring in Alton, is a tropical month, with an average temperature ranging between min 65.8°F (18.8°C) and max 86.4°F (30.2°C).

Temperature

As April gives way to May, the average high-temperature displays a slight ascent, adjusting from a warm 80.2°F (26.8°C) to a tropical 86.4°F (30.2°C). During the month of May, Alton's nighttime temperature lowers to an average of 65.8°F (18.8°C).

Heat index

For most parts of May, the heat index is evaluated at a torrid 96.8°F (36°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Observations indicate that the heat index values are for shady locations with light wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

With an average relative humidity of 70%, May is the least humid month in Alton.

Rainfall

In May, in Alton, the rain falls for 13.6 days. Throughout May, 2.4" (61mm) of precipitation is accumulated. Throughout the year, in Alton, there are 173.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

Snowfall

In Alton, snow does not fall in January, March through December.

Daylight

In Alton, the average length of the day in May is 13h and 41min.
On the first day of May, sunrise is at 6:48 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 8:28 pm EDT.

Sunshine

In May, the average sunshine in Alton is 10.6h.

UV index

The months with the highest UV index in Alton are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in May transforms into the following instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Enhance your sun protection with tightly woven, yet airy clothing.