September weather forecast
Ulmerton, FL

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Weather in September

September, the first month of the autumn in Ulmerton, is still a hot month, with an average temperature fluctuating between 77.9°F (25.5°C) and 86.2°F (30.1°C).

Temperature

Ulmerton's average high-temperature in September is a still tropical 86.2°F (30.1°C), indicating a subtle variation from August. Ulmerton experiences a minimal drop from daytime high temperatures, recording an average low-temperature of 77.9°F (25.5°C) throughout September.

Heat index

The heat index value for September is calculated to be a very hot 96.8°F (36°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Ulmerton, during September, the rain falls for 20.7 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, there are 149.9 rainfall days, and 16.18" (411mm) of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:17 pm EDT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

Ulmerton in September has an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 77.9°F (25.5°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in September is calculated to be 96.8°F (36°C).

What is the average humidity in September?

In Ulmerton, the average relative humidity in September is 74%.

How much does it rain in September?

In Ulmerton, in September, during 20.7 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

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

The average day length in September is 12h and 19min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:17 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.1h.

What are the months with the highest UV index?

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?

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents 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
Ulmerton, FL

Average temperature in September - Ulmerton, FL
  • Average high temperature in September: 86.2°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (65.8°F).

  • Average low temperature in September: 77.9°F

The month with the highest average low temperature is August (80.6°F).
The coldest month (with the lowest average low temperature) is January (55.9°F).

Average pressure in September
Ulmerton, FL

Average pressure in September - Ulmerton, FL
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

Average wind speed in September
Ulmerton, FL

Average wind speed in September - Ulmerton, FL
  • Average wind speed in September: 8mph

The windiest months (with the highest average wind speed) are January and March (9.8mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

Average humidity in September
Ulmerton, FL

Average humidity in September - Ulmerton, FL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Ulmerton, FL

Average rainfall in September - Ulmerton, FL
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is August (3.07").
The driest month (with the least rainfall) is March (0.39").

Average rainfall days in September
Ulmerton, FL

Average rainfall days in September - Ulmerton, FL
  • Average rainfall days in September: 20.7 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is February (6.7 days).

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

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

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

Average sunshine days in September
Ulmerton, FL

Average sunshine days in September - Ulmerton, FL
  • Average sunshine days in September: 5.5 days

The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is August (5 days).

Average UV index in September
Ulmerton, FL

Average UV index in September - Ulmerton, 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 4).

Average cloud cover in September
Ulmerton, FL

Average cloud cover in September - Ulmerton, FL
  • Average cloud cover in September: 26

The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).

Average visibility in September
Ulmerton, FL

Average visibility in September - Ulmerton, 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).

Ulmerton, Florida, USA

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