August weather forecast
Riverdale, FL

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Weather in August

The last month of the summer, August, is another hot month in Riverdale, Florida, with an average temperature fluctuating between 75.6°F (24.2°C) and 90°F (32.2°C).

Temperature

August stands out as Riverdale's warmest month, with temperatures ranging between an average high of 90°F (32.2°C) and a low of 75.6°F (24.2°C).

Heat index

For August, the heat index is computed to be a life-threatening hot 113°F (45°C). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

July through September, with an average relative humidity of 79%, are the most humid months.

Rainfall

August is the month with the most rainfall. Rain falls for 20.6 days and accumulates 2.95" (75mm) of precipitation.

Daylight

In August, the average length of the day is 13h and 8min.
On the first day of the month, sunrise is at 6:50 am and sunset at 8:19 pm. On the last day of August, sunrise is at 7:06 am and sunset at 7:50 pm EDT.

Sunshine

In August, the average sunshine in Riverdale is 9.7h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: In August, the maximum UV index of 7 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month?

Riverdale records the warmest temperatures in August, averaging a high of 90°F (32.2°C) and a low of 75.6°F (24.2°C).

How hot is it in August?

The high-temperature, in August, in Riverdale, is 90°F (32.2°C), while the low-temperature averages to 75.6°F (24.2°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in August is computed to be 113°F (45°C).

What are the most humid months?

July through September, with an average relative humidity of 79%, are most humid months.

What is the average humidity in August?

The average relative humidity in August is 79%.

What is the rainiest month?

The month with the most rainfall is August, when the rain falls for 20.6 days and typically aggregates up to 2.95" (75mm) of precipitation.

How many days does it rain in August?

In August, the rain falls for 20.6 days. Throughout August, 2.95" (75mm) of precipitation is accumulated.

What is the average length of the day in August?

In August, the average day length is 13h and 8min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:50 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 7:50 pm EDT.

How many hours of sunshine does Riverdale have in August?

In Riverdale, the average sunshine duration in August is 9.7h.

What is the month with the highest UV index?

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

What is the UV index intensity in August?

In Riverdale, the average daily maximum UV index in August is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe 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 August
Riverdale, FL

Average temperature in August - Riverdale, FL
  • Average high temperature in August: 90°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 August: 75.6°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).

Average pressure in August
Riverdale, FL

Average pressure in August - Riverdale, FL
  • Average pressure in August: 29.98"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).

Average wind speed in August
Riverdale, FL

Average wind speed in August - Riverdale, FL
  • Average wind speed in August: 4.6mph

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).

Average humidity in August
Riverdale, FL

Average humidity in August - Riverdale, FL
  • Average humidity in August: 79%

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

Average rainfall in August
Riverdale, FL

Average rainfall in August - Riverdale, FL
  • Average rainfall in August: 2.95"

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

Average rainfall days in August
Riverdale, FL

Average rainfall days in August - Riverdale, FL
  • Average rainfall days in August: 20.6 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).

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

Average daylight in August / Average sunshine in August - Riverdale, FL
  • Average daylight in August: 13h and 1min

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 August: 9h 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).

Average sunshine days in August
Riverdale, FL

Average sunshine days in August - Riverdale, FL
  • Average sunshine days in August: 6.2 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).

Average UV index in August
Riverdale, FL

Average UV index in August - Riverdale, FL
  • Average UV index in August: 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).

Average cloud cover in August
Riverdale, FL

Average cloud cover in August - Riverdale, FL
  • Average cloud cover in August: 32

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

Average visibility in August
Riverdale, FL

Average visibility in August - Riverdale, FL
  • Average visibility in August: 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).

Riverdale, Florida, USA

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