September weather forecast
Ewell, FL

Share

Weather in September

The first month of the autumn, September, is still a hot month in Ewell, Florida, with an average temperature fluctuating between 73.6°F (23.1°C) and 88.2°F (31.2°C).

Temperature

The introduction of September sees an average high-temperature of a still tropical 88.2°F (31.2°C), hardly deviating from August. Ewell temperatures generally rest at a low of 73.6°F (23.1°C) during the September nights.

Heat index

September's average heat index is appraised at a blisteringly hot 105.8°F (41°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

August and September, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Ewell, during September, the rain falls for 20.6 days and regularly aggregates up to 3.98" (101mm) of precipitation. Throughout the year, there are 189 rainfall days, and 36.54" (928mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of the month, sunrise is at 7:06 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:14 pm EDT.

Sunshine

In Ewell, the average sunshine in September is 8.6h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

An average high-temperature, in September, in Ewell, is 88.2°F (31.2°C) and the average low-temperature is 73.6°F (23.1°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 105.8°F (41°C).

What are the most humid months?

The months with the highest humidity are August and September, with an average relative humidity of 79%.

What is the average humidity in September?

In September, the average relative humidity is 79%.

How many days does it rain in September?

In Ewell, in September, during 20.6 rainfall days, 3.98" (101mm) of precipitation is typically accumulated.

How many hours of daylight does Ewell have in September?

In Ewell, the average day length in September is 12h and 19min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:06 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:14 pm EDT.

How long on average sun shines in September?

In Ewell, the average sunshine duration in September is 8.6h.

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 intensity in September?

The average daily maximum UV index in September in Ewell is 7. A UV Index of 6 to 7 symbolizes a high health risk from 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
Ewell, FL

Average temperature in September - Ewell, FL
  • Average high temperature in September: 88.2°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (68.9°F).

  • Average low temperature in September: 73.6°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (51.1°F).

Average pressure in September
Ewell, FL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

Average wind speed in September
Ewell, FL

Average wind speed in September - Ewell, FL
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are March and April (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).

Average humidity in September
Ewell, FL

Average humidity in September - Ewell, FL
  • Average humidity in September: 79%

The months with the highest relative humidity are August and September (79%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September
Ewell, FL

Average rainfall in September - Ewell, FL
  • Average rainfall in September: 3.98"

The wettest month (with the highest rainfall) is August (6.89").
The driest months (with the least rainfall) are January and November (1.18").

Average rainfall days in September
Ewell, FL

Average rainfall days in September - Ewell, FL
  • Average rainfall days in September: 20.6 days

The month with the highest number of rainy days is July (26.8 days).
The month with the least rainy days is January (9.1 days).

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

Average daylight in September / Average sunshine in September - Ewell, 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: 8h and 4min

The month with the most sunshine is May (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

Average sunshine days in September
Ewell, FL

Average sunshine days in September - Ewell, FL
  • Average sunshine days in September: 7.8 days

The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (2.9 days).

Average UV index in September
Ewell, FL

Average UV index in September - Ewell, 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
Ewell, FL

Average cloud cover in September - Ewell, FL
  • Average cloud cover in September: 35

The months with the most cloud cover are February and December (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 29).

Average visibility in September
Ewell, FL

Average visibility in September - Ewell, 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).

Ewell, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location