September weather forecastHaines City, FL
September
Weather in September
The first month of the autumn, September, is still a tropical month in Haines City, Florida, with an average temperature ranging between max 88°F (31.1°C) and min 73.8°F (23.2°C).Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still tropical 88°F (31.1°C) from August's 90.1°F (32.3°C). Haines City experiences a steady low-temperature of 73.8°F (23.2°C) throughout September.Heat index
The average heat index in September is appraised at an extremely hot 105.8°F (41°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.Realize that the values for the heat index are set for shaded places and light winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
August and September, with an average relative humidity of 79%, are the most humid months.Rainfall
In Haines City, in September, it is raining for 22 days, with typically 4.02" (102mm) of accumulated precipitation. In Haines City, during the entire year, the rain falls for 194.2 days and collects up to 35.71" (907mm) of precipitation.Daylight
In September, the average length of the day is 12h and 19min.On the first day of September in Haines City, sunrise is at 7:05 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:13 pm EDT.
Sunshine
The average sunshine in September is 8.7h.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 risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 7 during September translates into the following directions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Haines City, FL
- Average high temperature in September: 88°F
The warmest months (with the highest average high temperature) are July and August (90.1°F).
The month with the lowest average high temperature is January (68.9°F).
- Average low temperature in September: 73.8°F
The month with the highest average low temperature is August (76.1°F).
The coldest month (with the lowest average low temperature) is January (51.3°F).
Average pressure in September
Haines City, 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
Haines City, FL
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January, March and April (6.7mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Haines City, 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
Haines City, FL
- Average rainfall in September: 4.02"
The wettest month (with the highest rainfall) is August (6.02").
The driest month (with the least rainfall) is March (1.26").
Average rainfall days in September
Haines City, FL
- Average rainfall days in September: 22 days
The month with the highest number of rainy days is August (26.2 days).
The month with the least rainy days is January (9.3 days).
Average daylight in September /
Average sunshine in September
Haines City, 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: 8h and 42min
The months with the most sunshine are May and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Haines City, FL
- Average sunshine days in September: 6.1 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (2.9 days).
Average UV index in September
Haines City, 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
Haines City, FL
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is May (Cloud cover 29).
Average visibility in September
Haines City, 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).





