September weather forecast
Slater, FL

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Weather in September

The first month of the autumn, September, is also a hot month in Slater, Florida, with an average temperature varying between 76.6°F (24.8°C) and 87.6°F (30.9°C).

Temperature

As August transitions into September, Slater records an average high-temperature of a still tropical 87.6°F (30.9°C), showing a gentle shift from the preceding month. September nights are marked by an average low-temperature of 76.6°F (24.8°C).

Heat index

In September, the average heat index is calculated to be a sweltering 102.2°F (39°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

September and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In Slater, during September, the rain falls for 20.9 days and regularly aggregates up to 2.95" (75mm) of precipitation. In Slater, during the entire year, the rain falls for 159.2 days and collects up to 23.54" (598mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 18min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:14 pm EDT.

Sunshine

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

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 vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

Slater in September has an average high-temperature of 87.6°F (30.9°C) and an average low-temperature of 76.6°F (24.8°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is calculated to be 102.2°F (39°C).

What is the most humid month?

The months with the highest humidity are September and December, with an average relative humidity of 76%.

What is the average humidity in September?

In Slater, the average relative humidity in September is 76%.

How much does it rain in September?

In September, the rain falls for 20.9 days. Throughout September, 2.95" (75mm) of precipitation is accumulated.

How many hours of daylight does Slater have in September?

The average day length in September is 12h and 18min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:07 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:14 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.2h.

What are the months with the highest UV index?

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 September?

In Slater, the average daily maximum UV index in September 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 September
Slater, FL

Average temperature in September - Slater, FL
  • Average high temperature in September: 87.6°F

The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is January (71.1°F).

  • Average low temperature in September: 76.6°F

The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (56.7°F).

Average pressure in September
Slater, FL

Average pressure in September - Slater, FL
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

Average wind speed in September
Slater, FL

Average wind speed in September - Slater, FL
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are October and November (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in September
Slater, FL

Average humidity in September - Slater, FL
  • Average humidity in September: 76%

The months with the highest relative humidity are September and December (76%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September
Slater, FL

Average rainfall in September - Slater, FL
  • Average rainfall in September: 2.95"

The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and March (0.63").

Average rainfall days in September
Slater, FL

Average rainfall days in September - Slater, FL
  • Average rainfall days in September: 20.9 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is January (6.3 days).

Average daylight in September /
Average sunshine in September
Slater, FL

Average daylight in September / Average sunshine in September - Slater, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in September: 9h and 1min

The months with the most sunshine are May and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in September
Slater, FL

Average sunshine days in September - Slater, FL
  • Average sunshine days in September: 7.9 days

The month with the most sunshine days is January (23 days).
The month with the least sunshine days is August (5.9 days).

Average UV index in September
Slater, FL

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

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

Average cloud cover in September
Slater, FL

Average cloud cover in September - Slater, FL
  • Average cloud cover in September: 28

The months with the most cloud cover are January and December (Cloud cover 29).
The months with the least cloud cover are March, April and May (Cloud cover 24).

Average visibility in September
Slater, FL

Average visibility in September - Slater, FL
  • Average visibility in September: 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).

Slater, Florida, USA

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