September weather forecast
Smyrna, FL

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Weather in September

The first month of the autumn, September, is still a tropical month in Smyrna, Florida, with an average temperature ranging between min 70.7°F (21.5°C) and max 86.9°F (30.5°C).

Temperature

Smyrna notes an average high-temperature of a still tropical 86.9°F (30.5°C) in September, hardly diverging from August. An average low-temperature of 70.7°F (21.5°C) is expected in Smyrna during September.

Heat index

The heat index in September is evaluated at a fiery hot 100.4°F (38°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in September in Smyrna is 76%.

Rainfall

In Smyrna, during September, the rain falls for 18.5 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 185.4 rainfall days, and 39.13" (994mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Smyrna.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of September, sunrise is at 6:19 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:28 pm CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September in Smyrna is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

How hot does it get in Smyrna in September?

An average high-temperature, in September, in Smyrna, is 86.9°F (30.5°C) and the average low-temperature is 70.7°F (21.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in September is evaluated at 100.4°F (38°C).

What is the average humidity in September in Smyrna?

The average relative humidity in September in Smyrna is 76%.

How much does it rain in Smyrna in September?

In Smyrna, during September, the rain falls for 18.5 days and regularly aggregates up to 2.87" (73mm) of precipitation.

When it does not snow in Smyrna?

February through December are months without snowfall in Smyrna.

How many hours of daylight does Smyrna have in September?

The average day length in September is 12h and 20min.

When are sunrise and sunset in September in Smyrna?

On the first day of September in Smyrna, sunrise is at 6:19 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:28 pm CDT.

How many hours of sunshine does Smyrna have in September?

In Smyrna, Florida, the average sunshine duration in September is 8.9h.

What is the UV index intensity in September in Smyrna?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Smyrna, FL

Average temperature in September - Smyrna, FL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (59.5°F).

  • Average low temperature in September: 70.7°F

The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).

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Average pressure in September
Smyrna, FL

Average pressure in September - Smyrna, FL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in September
Smyrna, FL

Average wind speed in September - Smyrna, FL
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is March (7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in September
Smyrna, FL

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

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is May (71%).

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Average rainfall in September
Smyrna, FL

Average rainfall in September - Smyrna, FL
  • Average rainfall in September: 2.87"

The wettest month (with the highest rainfall) is August (5.94").
The driest month (with the least rainfall) is November (1.85").

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Average rainfall days in September
Smyrna, FL

Average rainfall days in September - Smyrna, FL
  • Average rainfall days in September: 18.5 days

The month with the highest number of rainy days is August (25.6 days).
The month with the least rainy days is November (8.9 days).

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Average snowfall in September
Smyrna, FL

Average snowfall in September - Smyrna, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Smyrna, FL

Average snowfall days in September - Smyrna, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are May and July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).

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Average sunshine days in September
Smyrna, FL

Average sunshine days in September - Smyrna, FL
  • Average sunshine days in September: 9 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is August (3.9 days).

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Average UV index in September
Smyrna, FL

Average UV index in September - Smyrna, FL
  • Average UV index in September: 6

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

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Average cloud cover in September
Smyrna, FL

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

The month with the most cloud cover is December (Cloud cover 43).
The months with the least cloud cover are May and October (Cloud cover 26).

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Average visibility in September
Smyrna, FL

Average visibility in September - Smyrna, 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).

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Smyrna, Florida, USA

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