September weather forecastFort Lonely, FL
September
Weather in September
The first month of the autumn, September, is still a hot month in Fort Lonely, Florida, with an average temperature ranging between max 87.3°F (30.7°C) and min 77.2°F (25.1°C).Temperature
Fort Lonely's September reports an average high-temperature of a still hot 87.3°F (30.7°C), exhibiting a minor difference from August. In September, the average low-temperature records at a warm 77.2°F (25.1°C) during the nights.Heat index
The heat index value during September is appraised at a very hot 100.4°F (38°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
In September, the average relative humidity is 74%.Rainfall
In September, in Fort Lonely, the rain falls for 21.7 days. Throughout September, 3.46" (88mm) of precipitation is accumulated. Throughout the year, there are 172.1 rainfall days, and 27.2" (691mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 19min.On the first day of September, sunrise is at 7:09 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 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 in Fort Lonely are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fort Lonely, FL
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (67.6°F).
- Average low temperature in September: 77.2°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (55.2°F).
Average pressure in September
Fort Lonely, 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
Fort Lonely, FL
- Average wind speed in September: 7.1mph
The windiest months (with the highest average wind speed) are January, March, October and November (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Fort Lonely, FL
- Average humidity in September: 74%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Fort Lonely, FL
- Average rainfall in September: 3.46"
The wettest month (with the highest rainfall) is July (5.24").
The driest months (with the least rainfall) are February and November (0.75").
Average rainfall days in September
Fort Lonely, FL
- Average rainfall days in September: 21.7 days
The month with the highest number of rainy days is July (26.2 days).
The month with the least rainy days is November (7 days).
Average daylight in September /
Average sunshine in September
Fort Lonely, FL
- Average daylight in September: 12h and 18min
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 6min
The month with the most sunshine is May (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Fort Lonely, FL
- Average sunshine days in September: 5.3 days
The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is July (3.1 days).
Average UV index in September
Fort Lonely, 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
Fort Lonely, FL
- Average cloud cover in September: 27
The month with the most cloud cover is December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 21).
Average visibility in September
Fort Lonely, 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).





