September weather forecastLehigh Acres, FL
September
Weather in September
The first month of the autumn, September, is also a hot month in Lehigh Acres, Florida, with an average temperature fluctuating between 76.6°F (24.8°C) and 87.6°F (30.9°C).Temperature
Lehigh Acres notes an average high-temperature of a still tropical 87.6°F (30.9°C) in September, hardly diverging from August. Lehigh Acres, in September, observes a steady average low-temperature of 76.6°F (24.8°C).Heat index
For most parts of September, the heat index is estimated at a blisteringly hot 104°F (40°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
The most humid month is September, with an average relative humidity of 77%.Rainfall
In Lehigh Acres, during September, the rain falls for 23.5 days and regularly aggregates up to 3.43" (87mm) of precipitation. Throughout the year, in Lehigh Acres, there are 170 rainfall days, and 23.82" (605mm) of precipitation is accumulated.Daylight
In Lehigh Acres, the average length of the day in September is 12h and 18min.On the first day of the month, sunrise is at 7:06 am and sunset at 7:46 pm. On the last day of September, in Lehigh Acres, sunrise is at 7:18 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index in Lehigh Acres. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 7 in September translates into these instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lehigh Acres, FL
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (71.2°F).
- Average low temperature in September: 76.6°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).
Average pressure in September
Lehigh Acres, FL
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in September
Lehigh Acres, FL
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is October (7.8mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).
Average humidity in September
Lehigh Acres, FL
- Average humidity in September: 77%
The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Lehigh Acres, FL
- Average rainfall in September: 3.43"
The wettest month (with the highest rainfall) is August (5.12").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
Lehigh Acres, FL
- Average rainfall days in September: 23.5 days
The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is January (6.3 days).
Average daylight in September /
Average sunshine in September
Lehigh Acres, FL
- Average daylight in September: 12h and 18min
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 6min
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 36min).
Average sunshine days in September
Lehigh Acres, FL
- Average sunshine days in September: 4.9 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is August (4.1 days).
Average UV index in September
Lehigh Acres, 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
Lehigh Acres, FL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 24).
Average visibility in September
Lehigh Acres, 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).





