May weather forecast
Riverdale, FL

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Weather in May

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

Temperature

The shift into May records an average high-temperature of a tropical 86.2°F (30.1°C), subtly varied from April's 82°F (27.8°C). In Riverdale, the average nighttime temperature during May is an enjoyable 67.8°F (19.9°C).

Heat index

The average heat index in May is estimated at a torrid 96.8°F (36°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In May, the average relative humidity is 73%.

Rainfall

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

Daylight

The average length of the day in May in Riverdale, Florida, 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, in Riverdale, sunrise is at 6:31 am and sunset at 8:21 pm EDT.

Sunshine

In May, the average sunshine is 10.6h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Riverdale. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

How hot is May in Riverdale?

An average high-temperature, in May, in Riverdale, is 86.2°F (30.1°C) and the average low-temperature is 67.8°F (19.9°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in May is estimated at 96.8°F (36°C).

What is the average humidity in May in Riverdale?

The average relative humidity in May is 73%.

How many days does it rain in May in Riverdale?

In Riverdale, Florida, in May, during 12.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

How many hours of daylight does Riverdale have in May?

In May, the average day length is 13h and 35min.

What time are sunrise and sunset in May in Riverdale?

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

How long on average sun shines in May in Riverdale?

The average sunshine duration in May in Riverdale, Florida, is 10.6h.

What are the months with the highest UV index in Riverdale?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

How high is the UV index in May in Riverdale?

In Riverdale, Florida, the average daily maximum UV index in May is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Riverdale, FL

Average temperature in May - Riverdale, FL
  • Average high temperature in May: 86.2°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (67.6°F).

  • Average low temperature in May: 67.8°F

The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (50°F).

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Average pressure in May
Riverdale, FL

Average pressure in May - Riverdale, FL
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

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Average wind speed in May
Riverdale, FL

Average wind speed in May - Riverdale, FL
  • Average wind speed in May: 5.8mph

The windiest months (with the highest average wind speed) are March and April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

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Average humidity in May
Riverdale, FL

Average humidity in May - Riverdale, FL
  • Average humidity in May: 73%

The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is March (72%).

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Average rainfall in May
Riverdale, FL

Average rainfall in May - Riverdale, FL
  • Average rainfall in May: 1.22"

The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (0.31").

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Average rainfall days in May
Riverdale, FL

Average rainfall days in May - Riverdale, FL
  • Average rainfall days in May: 12.6 days

The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is January (5.8 days).

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Average daylight in May /
Average sunshine in May
Riverdale, FL

Average daylight in May / Average sunshine in May - Riverdale, FL
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).

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Average sunshine days in May
Riverdale, FL

Average sunshine days in May - Riverdale, FL
  • Average sunshine days in May: 15 days

The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is August (6.2 days).

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Average UV index in May
Riverdale, FL

Average UV index in May - Riverdale, FL
  • Average UV index in May: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).

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Average cloud cover in May
Riverdale, FL

Average cloud cover in May - Riverdale, FL
  • Average cloud cover in May: 28

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 28).

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Average visibility in May
Riverdale, FL

Average visibility in May - Riverdale, FL
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Riverdale, Florida, USA

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