September weather forecast and climate
Carnestown, FL

The first month of the autumn, September, is also a hot month in Carnestown, Florida, with average temperature varying between 87.1°F (30.6°C) and 78.4°F (25.8°C).

Temperature

In Carnestown, the average high-temperature is practically the same as in August - a still tropical 87.1°F (30.6°C). The average low-temperature, in September, is 78.4°F (25.8°C).

Heat index

The average heat index in September is calculated to a sweltering 100.4°F (38°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. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like pregnancy, clothing, metabolic differences, and activity influence one's weather impression. 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 particularly important for children. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. 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. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Carnestown, the average relative humidity is 75%.

Rainfall

In Carnestown, during 21.5 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, in Carnestown, there are 162.1 rainfall days, and 21.69" (551mm) of precipitation is accumulated.

Daylight

The average length of the day is 12.3h.

Sunshine

In September, the average sunshine in Carnestown, Florida, is 9.2h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Carnestown. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Carnestown?

The average high-temperature, in September, in Carnestown, is 87.1°F (30.6°C), while the average low-temperature is 78.4°F (25.8°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that factores the actual air temperature with the relative humidity, in September is calculated to 100.4°F (38°C).

What is the average humidity in September in Carnestown?

The average relative humidity in September in Carnestown, Florida, is 75%.

How many days does it rain in September in Carnestown?

In Carnestown, in September, it is raining for 21.5 days, with typically 2.4" (61mm) of accumulated precipitation.

How many hours of daylight does Carnestown have in September?

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

How many hours of sunshine does Carnestown have in September?

In September, the average sunshine in Carnestown is 9.2h.

What is the month with the highest UV index in Carnestown?

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

What is the UV index reading in September in Carnestown?

In Carnestown, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Carnestown, FL
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (71.6°F).

  • Average low temperature in September: 78.4°F

The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).

Average pressure in September - Carnestown, FL
  • Average pressure in September: 29.94"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is September (29.94").

Average wind speed in September - Carnestown, FL
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is November (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in September - Carnestown, FL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (72%).

Average rainfall in September - Carnestown, FL
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is March (0.63").

Average rainfall days in September - Carnestown, FL
  • Average rainfall days in September: 21.5 days

The month with the highest number of rainy days is August (22.4 days).
The month with the least rainy days is February (7 days).

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

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in September: 9.2h

Months with the most sunshine are May and July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.7h).

Average sunshine days in September - Carnestown, FL
  • Average sunshine days in September: 7.1 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is August (6.8 days).

Average UV index in September - Carnestown, FL
  • Average UV index in September: 7

Months with the highest UV index are May, June, July, August and September (UV index 7).
Months with the lowest UV index are January and February (UV index 5).

Average cloud cover in September - Carnestown, FL
  • Average cloud cover in September: 27

The month with the most cloud cover is January (Cloud cover 28).
Months with the least cloud cover are March and April (Cloud cover 22).

Average visibility in September - Carnestown, 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).