September weather forecast
Sweetwater, FL

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Weather in September

The first month of the autumn, September, is also a hot month in Sweetwater, Florida, with temperature in the range of an average high of 87.6°F (30.9°C) and an average low of 79.7°F (26.5°C).

Temperature

The onset of September manifests an average high-temperature of a still hot 87.6°F (30.9°C), demonstrating a minor variation from the preceding month. Sweetwater maintains a near steady average temperature of 79.7°F (26.5°C) during the nights of September, demonstrating little drop from daytime highs.

Heat index

September's heat index is appraised at a fiery hot 100.4°F (38°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 are extremely vital to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In September, the average relative humidity is 72%.

Rainfall

In September, in Sweetwater, the rain falls for 13.8 days. Throughout September, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 110.8 rainfall days, and 8.19" (208mm) of precipitation is accumulated.

Snowfall

The only month with snowfall is September. The month with the most snowfall days is September, when snow falls for 0.1 days.

Daylight

The average length of the day in September is 12h and 17min.
On the first day of September in Sweetwater, sunrise is at 7:02 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:08 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Sweetwater in September?

In September, in Sweetwater, the average high-temperature is 87.6°F (30.9°C), and the average low-temperature is 79.7°F (26.5°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is appraised at 100.4°F (38°C).

What is the average humidity in September in Sweetwater?

The average relative humidity in September in Sweetwater is 72%.

How much does it rain in Sweetwater in September?

In Sweetwater, Florida, in September, it is raining for 13.8 days, with typically 0.71" (18mm) of accumulated precipitation.

When does it snow the most in Sweetwater?

September has the most snowfall days of the year. Snow falls for 0.1 days.

When does it start to snow in Sweetwater?

September is the first month it typically snows. Throughout September, there are 0.1 snowfall days.

What is the average length of the day in September in Sweetwater?

In September, the average day length in Sweetwater, Florida, is 12h and 17min.

What time are sunrise and sunset in September in Sweetwater?

On the first day of September in Sweetwater, Florida, sunrise is at 7:02 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:08 pm EDT.

How many hours of sunshine does Sweetwater have in September?

The average sunshine duration in September is 9.2h.

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

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 Sweetwater?

The average daily maximum UV index in September in Sweetwater, Florida, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sweetwater, FL

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

The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (73.9°F).

  • Average low temperature in September: 79.7°F

The month with the highest average low temperature is August (81.7°F).
The coldest month (with the lowest average low temperature) is January (62.4°F).

Average pressure in September
Sweetwater, FL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).

Average wind speed in September
Sweetwater, FL

Average wind speed in September - Sweetwater, FL
  • Average wind speed in September: 7.1mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

Average humidity in September
Sweetwater, FL

Average humidity in September - Sweetwater, FL
  • Average humidity in September: 72%

The month with the highest relative humidity is December (74%).
The month with the lowest relative humidity is March (67%).

Average rainfall in September
Sweetwater, FL

Average rainfall in September - Sweetwater, FL
  • Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is January (0.24").

Average rainfall days in September
Sweetwater, FL

Average rainfall days in September - Sweetwater, FL
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is December (4.7 days).

Average snowfall days in September
Sweetwater, FL

Average snowfall days in September - Sweetwater, FL
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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

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

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in September
Sweetwater, FL

Average sunshine days in September - Sweetwater, FL
  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is July (11.9 days).

Average UV index in September
Sweetwater, FL

Average UV index in September - Sweetwater, 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 month with the lowest UV index is January (UV index 5).

Average cloud cover in September
Sweetwater, FL

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

The month with the most cloud cover is October (Cloud cover 33).
The month with the least cloud cover is April (Cloud cover 25).

Average visibility in September
Sweetwater, FL

Average visibility in September - Sweetwater, 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).

Sweetwater, Florida, USA

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