September weather forecast and climate
Chantilly Acres, FL

September, the first month of the autumn, in Chantilly Acres, is still a tropical month, with average temperature ranging between min 72.3°F (22.4°C) and max 88°F (31.1°C).

Temperature

In Chantilly Acres, the average high-temperature in September is essentially the same as in August - a still hot 88°F (31.1°C). In September, the average low-temperature is 72.3°F (22.4°C).

Heat index

The average heat index in September is calculated to a scorching 104.9°F (40.5°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, metabolic differences, wind, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

Months with the highest humidity are August and September, with an average relative humidity of 78%.

Rainfall

In September, in Chantilly Acres, Florida, the rain falls for 13.3 days. Throughout September, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 150.7 rainfall days, and 23.78" (604mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Chantilly Acres, Florida, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Chantilly Acres?

The average high-temperature, in September, in Chantilly Acres, is 88°F (31.1°C), while the average low-temperature is 72.3°F (22.4°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, is evaluated at 104.9°F (40.5°C).

What is the most humid month in Chantilly Acres?

August and September, with an average relative humidity of 78%, are most humid months in Chantilly Acres, Florida.

What is the average humidity in September in Chantilly Acres?

In September, the average relative humidity in Chantilly Acres is 78%.

How much does it rain in Chantilly Acres in September?

In Chantilly Acres, during September, the rain falls for 13.3 days and regularly aggregates up to 1.3" (33mm) of precipitation.

What is the average length of the day in September in Chantilly Acres?

The average length of the day in September in Chantilly Acres, Florida, is 12.3h.

How many hours of sunshine does Chantilly Acres have in September?

In September, the average sunshine in Chantilly Acres is 8.6h.

What is the UV index reading in September in Chantilly Acres?

In September, the average daily maximum UV index in Chantilly Acres is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.
Average temperature in September - Chantilly Acres, FL
  • Average high temperature in September: 88°F

The warmest month (with the highest average high temperature) is August (90.7°F).
The month with the lowest average high temperature is January (64.4°F).

  • Average low temperature in September: 72.3°F

The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (46.2°F).

Average pressure in September - Chantilly Acres, FL
  • Average pressure in September: 29.97"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is September (29.97").

Average wind speed in September - Chantilly Acres, FL
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

Average humidity in September - Chantilly Acres, FL
  • Average humidity in September: 78%

Months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September - Chantilly Acres, FL
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is July (3.5").
The driest month (with the least rainfall) is November (1.26").

Average rainfall days in September - Chantilly Acres, FL
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (7.5 days).

Average daylight in September / Average sunshine in September - Chantilly Acres, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in September: 8.6h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 6h).

Average sunshine days in September - Chantilly Acres, FL
  • Average sunshine days in September: 15.9 days

Months with the most sunshine days are January and November (20.8 days).
Months with the least sunshine days are June and July (9.2 days).

Average UV index in September - Chantilly Acres, FL
  • Average UV index in September: 6

Months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

Average cloud cover in September - Chantilly Acres, FL
  • Average cloud cover in September: 33

The month with the most cloud cover is December (Cloud cover 38).
Months with the least cloud cover are May and October (Cloud cover 29).

Average visibility in September - Chantilly Acres, FL
  • Average visibility in September: 6mi

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